[HN Gopher] The $20 an hour Cessna 172 experiment (2020) ___________________________________________________________________ The $20 an hour Cessna 172 experiment (2020) Author : BWStearns Score : 223 points Date : 2023-02-09 18:07 UTC (4 hours ago) (HTM) web link (airfactsjournal.com) (TXT) w3m dump (airfactsjournal.com) | inamberclad wrote: | This is what we need to make GA an accessible hobby again. | bischofs wrote: | What the FAA has done to this guy is disgusting, they don't | respond to requests and treat him like a little guy despite the | impressive engineering here. I'm not a republican but this is a | great example of government destroying innovation and progress | through bureaucratic nonsense. | matt_morgan wrote: | My heart wants to agree with you but all those regulations must | have something to do with how few people die in airplane | crashes. It's like the textbook case of when regulations work, | and I don't think the FAA has a department of special | exceptions. We can wishfor it, but it's not easy to handle | someone who wants to do something different. | ericbarrett wrote: | Commercial aviation, sure. General aviation, e.g. a private | pilot flying a Cessna 172 as in the article, is about as | deadly per-mile as riding a motorcycle: far more dangerous | than driving a car the same distance. | outworlder wrote: | > Commercial aviation, sure. General aviation, e.g. a | private pilot flying a Cessna 172 as in the article, is | about as deadly per-mile as riding a motorcycle: far more | dangerous than driving a car the same distance. | | Others have touched on the probability thing. | | The issue with motorcycles is that a some of it is under | your control (driving safely, protective gear, bike | maintenance) but there's a lot that isn't: potholes, other | drivers, animals and so on. | | Flying, almost everything is under the pilot's control. | That includes most plane failures. Good preflight and | maintenance takes care of most issues. The rest is taken | care of by the flight planning - for example, engine | failures. You should always have a place to put down the | plane at any moment if you lose an engine - and general | aviation aircraft land pretty slow. | | Newer advancements have made it even safer (see also, whole | frame parachutes). | | That basically leaves freak accidents; they are a minority. | Go spelunk the NTSB database, you'll find most accidents | were preventable. | | In a nutshell, you are probably going to find the risk is | very skewed by complacent or otherwise irresponsible | pilots. | p1necone wrote: | The usage of 'per-mile' stats for aircraft safety irks me a | little bit. It's certainly not how I think of safety when I | hop on a plane - my internal comparison is more based on | time - like, I'm about to spend 30 minutes on a plane, how | much safer/less safe is that vs 30 minutes in a car? | | The distance comparison also doesn't make sense because | it's not like you could drive across the ocean even if you | tried. | | I guess it makes sense in terms of aggregate safety for a | population for transport planning, but on an individual | level it just doesn't communicate what I want to know. | | Edit: for an analogy - imagine if someone invented faster | than light space travel, but 25% of passengers don't | survive the trip. The deaths per 100 miles statistic would | be _amazing_ compared to both car and air travel, but would | you sign up for a ticket? | cmeacham98 wrote: | The distance comparison does make sense, because the | point of getting on a plane/car is to travel. People | don't say "I'm going to drive for 30 mins", they say "I'm | going to drive from Los Angeles to NYC". Comparing how | dangerous that is on a plane requires comparing by | distance, not time. | p1necone wrote: | Eh, not really. Distance travelled !== quality of | destination. | | I can travel X minutes on a plane for Y cost to one set | of destinations, or I can travel A minutes in a car for B | cost to a different set of destinations. The actual | distance between my current location and my destination | means _nothing_ to me, although the potential | destinations do, which certainly are more varied with | plane travel. | | But I live in a pretty nice place, so travelling locally | is pretty good too. | cmeacham98 wrote: | We're comparing safety, not "quality of destination". | | If you were to travel from point A to point B, and wanted | to know whether driving or flying was safer, then the | correct metric to look at is the "per distance" one. | bitdivision wrote: | Agreed.. Though it's an often used metric: fatalities per | billion kilometers (f/bnkm). | | Someone told me that risk per unit distance was higher | when walking than riding a motorcycle, which I thought | sounded like it could be possible. Sadly it seems its not | true [1]. | | Interesting how f/bnkm is so low for driving vs walking | though. | | [1]: https://www.normalizecycling.com/risk-in- | cycling/units-of-ri... | anamexis wrote: | I would guess the majority of time in general aviation is | not for the purpose of travel. It's a hobby. | hollerith wrote: | A lot of it is to give pilots the experience they need to | qualify to fly commercial airliners, also. | cmeacham98 wrote: | If you're assuming it is a hobby then comparing it to | car/motorcycle usage for travel is useless/invalid. | anamexis wrote: | Yes, exactly. | tormeh wrote: | The point is, being a hobby pilot is extremely dangerous. | anamexis wrote: | Is it? | | In US General Aviation, there were 332 deaths in | 19,454,467 flight hours in the year 2020. | | https://www.ntsb.gov/news/press- | releases/Pages/NR20211117.as... | ineedasername wrote: | _> Is it?_ | | Yes, it is. | | Very similar to how dangerous motorcycle riding is. Work | out approx. hours of operation from miles driven (say | avg. 30-50mph) and from there use annual fatalities. [1] | Given that, death-per-hour for 332 deaths/19M in flight | hours is roughly comparable to the 6000 deaths seen in | motorcycle accidents. Much higher than automobiles, much | higher than commercial flight. | | [1] https://www.iii.org/fact-statistic/facts-statistics- | motorcyc... | anamexis wrote: | Ok, so per hour it is comparable to motorcycles. But | consider also that the average private pilot only flies | 100-150 hours per year. | | I don't disagree that it is more dangerous than | automobiles or commercial flight. But I wouldn't | characterize it as "extremely dangerous." Nor would I | characterize motorcycles as such. | ineedasername wrote: | I guess we disagree on motorcycle danger then. I consider | motorcycles to be extremely dangerous (mostly to their | drivers). A friend of mine dies about 1.5 years ago on | one. I'd had two other people (not as close) in my life | die in motorcycle accidents so I used to cringe inside | every time he told me he was going riding over the | weekend, though I would just wish him well & to be safe. | Riding made him happy, was a stress reliever for him. And | as far as that goes there are probably worse habits like | smoking & drinking to excess, but that doesn't make any | of them non-dangerous. | Dylan16807 wrote: | Google says "motorcycles are usually ridden for around | 3,000 miles per year on average" so that's less than a | hundred hours. Another result says the median is 1000 and | 90th percentile is around 5000. | | Neither one is "extremely" dangerous but it's a far cry | from "all these strict regulations make it extremely | safe" like with commercial flight. | oldgradstudent wrote: | Assuming all hours were flown at Cessna 172 cruise speed | of 140mph, that gives about 2e7 * 140 = 2.8e9, divided by | 332 gives about 8.4 million miles per fatality. | | Compared to 85 million miles travelled per fatality on | the roads in general, and about 4 million miles travelled | per fatality on motorcycles. | | 2X better than motorcycles, 10X worse than road | fatalities in general. | | And that's being quite generous about the mileage. | anamexis wrote: | I don't think miles travelled per fatality is a useful | point of comparison for general aviation. This puts it | about on par with pedestrian deaths per mile travelled, | and I don't think most people would call walking | "extremely dangerous." | TylerE wrote: | Being a lazy hobby pilot is dangerous. The majority of GA | crashes are pretty basic pilot error/"gotta-get-there- | itis". | | Motorcycles are the same way, actually. An overwhelming | amount of fatal motorcycle accidents involve alcohol at | night, usually in combination with not wearing proper | gear. | someweirdperson wrote: | Bikers frequently get killed by other forms of traffic | (at least as a major contributing factor), pilots | typically kill themselves (usually unintentionally, of | course), with rare exceptions. | ROTMetro wrote: | Have you even looked into the history of aviation and why | we have the FAA? Thes homebrew airplanes were falling out | of the sky all over the place. A lot of people were dying. | rippercushions wrote: | Obligatory link to why the FAA maybe should have a couple of | special exceptions. | | https://philip.greenspun.com/blog/2011/06/16/revitalizing- | th... | KennyBlanken wrote: | The crash/death rate for piston general aviation is | staggeringly high and a lot of it has to do with how | unreliable ancient systems in the planes are, and task | saturation from pilots still expected to manage stuff like | fuel mixture settings by hand. | | It's almost entirely about protectionism of a massive | industry of rebuilding and servicing companies for ancient | engines and electromechanical systems, not safety or | reliability. | | Compare a modern electronic gyro to its electromechanical | cousin. The electromechanical version is unreliable, power- | hungry, and extremely expensive to service. | | The modern electronic equivalent is ultra-reliable, can self- | test, needs no servicing or repair, can contain its own | battery to self-power in an emergency, and be networked with | other devices in the cockpit. | | Want to put the electronic version in your plane? Ooooo, | sorry, no can do, Mr. Airplane Owner, says the FAA. Can't | hurt the profits of an entire industry dedicated to emptying | your wallet of thousands of dollars every time your gyro | needs to be rebuilt. | | A modern fuel-injected, water-cooled airplane engine can run | constant self-diagnostics and logging, and provide highly | useful, actionable information to both the pilot and | mechanic. It's single-lever, increasing reliability and | reducing task loading during the most critical phases of | flight, and reducing emissions substantially, too. It doesn't | have special considerations in terms of flight profiles; air- | cooled piston airplane engines require a gentle descent | profile or they will be "shock cooled" and undergo high wear | or outright seize. There are no issues with carb freeze. | Starting is a breeze, instead of a chore. The list goes on. | | We should be encouraging the hell out of EFI conversions and | EFI engine options...but instead the FAA buries them all | under mountains of paperwork and regulations to protect | Lycoming and the like. | vkou wrote: | > My heart wants to agree with you but all those regulations | must have something to do with how few people die in airplane | crashes. | | Very few people die in large commercial aviation crashes, but | the hobbyist pilot space is a graveyard. ~400 deaths/year in | the US, ~13 deaths/100M miles traveled. Meanwhile, commercial | aviation is closer to 0.002 deaths/100M miles traveled. | | Incidentally, the FAA rules around general aviation are a lot | more relaxed than they are around commercial aviation. As a | landlubber who occasionally spends a week geeking out about | planes, but would never own one, their rules don't really | seem to be ridiculous. | tysam_and wrote: | GA is extremely dangerous, piloting runs through part of my | family and single-engine aircraft are for the post- | midlife/retirement crisis that many pilots go through. It | also is their deathbed. | | One family member was at breakfast that morning with several | other pilots, all of whom had private aircraft except him (he | is a voracious pilot, though). Every single one of them | apparently had some extremely harrowing stories about engine | failure, etc. Every one of them. | | It's not a game, and the FAA is really sleeping on the | private sector as far as I understand. Its dying under | bureaucracy. | | To respond to the parent comment as well -- I don't think | this is a 'Republican', 'Democrat', or even a 'Libertarian' | issue. All three of those parties have weaknesses that tend | to screw over this kind of organization -- the first two with | extremely bloated processes, and the second with perhaps far- | too-little regulation. | | This is the kind of org that just needs good leadership with | integrity and funding that focuses on getting the little guys | up and out there, as well as promoting development and having | _very strict_ best practices for safety. It's a very hard | blend to do right, I think. Sorta a combination of reducing | bloat and inferred/accidental corruption, etc, I think. | | (not to get terribly political, I do not like politics at all | personally. Just talking through the technical points of the | matter as much as I can. Much love! <3 <3 <3 <3 :)))))) :D :D | :)))))) ) | ineedasername wrote: | _> must have something to do with how few people die in | airplane crashes_ | | Yes, at least somewhat: | | 1) The safety record of flying is often cited but that safety | record pertains to commercial aircraft, not private aircraft. | For hours of travel, private aircraft are significantly more | lethal commercial flight and even more than driving [1] | | 2) The article mentions having to jump through regulatory | hoops in the same sentence as literally putting out engine | fires. Maybe the two are unrelated but I can see a strong | public to regulatory hoops on something that, if done wrong, | amounts to a small homemade fuel air bomb with 1,000lb+ of | cessna debris added in to the mix if things go wrong. | | [1]https://www.wijet.com/private-jet-crash- | statistics/#:~:text=.... | kragen wrote: | a fuel-air bomb is very much more difficult to build than | you think it is | | it isn't going to happen by accident | | right now lots of people are getting exposed to fumes from | both leaded gasoline itself and the combustion products | from the engines, which probably kills more people than | faulty civil aviation engines ever will | ineedasername wrote: | Yes sure, it's not literally a military-grade thermobaric | explosion. It's a few hundred lbs of fuel strapped to a | 1,000lb+ airframe and I don't mind regulations and | oversight of such things when people want to propel them | through the air. | | As for the rest, I agree...? I'm not sure how that was | related. I think a dislike for leaded fuel is not | incompatible with my comments indicating that some | regulatory hoops are reasonable when creating customized | aircraft. | Dylan16807 wrote: | > I don't mind regulations and oversight of such things | | Do you think anyone is arguing against the existence of | plane regulations? | outworlder wrote: | It is not going to explode any more than a car will. | | It may catch on fire, though. | voldacar wrote: | You are demonstrating a lot of status-quo bias | pdonis wrote: | _> all those regulations must have something to do with how | few people die in airplane crashes_ | | Many of them do, but that certainly doesn't mean all of them | do. | | It's really hard to see how using decades old engine designs | with leaded gas is necessary to prevent crashes, or how | updating a proven airframe to newer engine designs that have | a lot of operating time in cars needs to be an extremely | onerous process to avoid crashes. | ceejayoz wrote: | Cars and planes have significantly different impacts on the | engine. | | https://www.flyingmag.com/aircraft-do-car-engines-make- | good-... | | > Car engines are designed to provide quick bursts of | relatively high power output for acceleration, and then | only modest power output for steady-state cruising. It's | unusual for an auto engine to operate anywhere near its | redline rpm or max-rated power output. Airplanes, on the | other hand, usually take off and climb near 100 percent | power output, followed by steady-state cruise often at 75 | percent power. Aircraft engines are designed to sustain | this punishment reliably over a typical 2,000-hour service | life. Try running your car's engine at or near redline rpm | all the time and see what happens. Of course, we don't know | what will happen, and in an airplane we can't pull over to | the side of the road when it does. | dsfyu404ed wrote: | So de-rate and conservatively tune the engine to a peak | HP that can be sustained indefinitely. This is SOP when | putting automotive engines in industrial uses. Just | because you don't know of it doesn't mean it's not dirt | common and well practiced in industry. | | 2000hr equates to, generously, like really generously, a | 150-200k service life. It really drives me up the wall to | see you acting like this is a big number when in any | other context you'd be happy to pop in and tell us about | how your you're so smart because you bought a Toyota and | it's _guaranteed_ to make it that far. | ceejayoz wrote: | > So de-rate and conservatively tune the engine to a peak | HP that can be sustained indefinitely. This is SOP when | putting automotive engines in industrial uses. | | Those industrial uses don't crash into a random person's | house if they fail, and "conservatively tune" means | you've changed the engine's behavior. The FAA likes you | to demonstrate safety when you change safety-critical | things. | | > 2000hr equates to, generously, a 150-200k service life. | | At a much higher cruising RPM, which is the entire point | of the article. | xyzzyz wrote: | > Those industrial uses don't crash into a random | person's house if they fail, | | It is _highly_ unlikely to crash into a random person's | home due to engine failure. Planes don't drop out of the | sky like stones when their engines fail. You can still | fly them and pick a spot to attempt emergency landing or | controlled crash. | | For comparison, cars crash into people's homes all the | time, but i don't believe it is ever a result of car | engine failure. No reason to expect plane engine failures | to cause these. | p_l wrote: | Considerable amount of plane crashes, including deadly | ones, involve engine failure - often due to things that | aren't present at all in automotive (or marine or | industrial) use. | stenius wrote: | I personally don't know what will happen, but I figure | that type of test is easy to do in a lab environment. | ceejayoz wrote: | Easy, but quite expensive to have a meaningful sample | size. | bischofs wrote: | the 24 hours of Le Mans, and tens of thousands of | runabout marine applications with automotive engines | disagree with you. The real question is would you prefer | a 1950s Lycoming engine with a mechanical fueling system, | or a modern car engine that has been proven in millions | of vehicles? | ceejayoz wrote: | https://en.wikipedia.org/wiki/24_Hours_of_Le_Mans says | "Racing teams must balance the demands of speed with the | cars' ability to run for 24 hours without mechanical | failure", which implies a slightly shorter lifespan than | you'd want in a plane. | aredox wrote: | As if running an engine for 24 hours was good enough for | a plane! | | And le Mans is not an oval track: engines don't run at | 100% all the time. | | And how many le Mans cars break down during the race? | voldacar wrote: | Hence why they used a marine engine. | aeternum wrote: | This is often achieve by simply derating the engine. You | redefine redline to be 75% of what the engine was | designed to produce. Then your takeoff becomes 75% power | and cruise is more like 56%. | cduzz wrote: | The story suggests they used a marine engine, which in | turn is an automotive engine modified to run under marine | conditions, which among other things includes "run at | full load for hours" or "run at partial load for hours". | | Typically, of course, you're not seeing a lot of | elevation changes in a marine application, but with | modern fuel injection that's probably not such a big | deal. | aeternum wrote: | The problem is that regulations are often a knee-jerk | reaction without consideration to the second order effects. | | When a crash happens, add a rule to prevent it from | happening again. | | Eventually however you have so many onerous rules that it | becomes incredibly expensive to design a new aircraft | engine and thus are suck with decades old tech that lacks | modern innovation and safety features. | | It's very rare to do a pass over regulations to try to | simplify them. From a regulatory POV, there is little glory | in that and lots of risk. | xyzzyz wrote: | Exactly. This is similar to medical context, where it is | found that decreasing regulations typically _improves_ | safety, both because it is easier to innovate and bring | better products to market, but also because it increases | liability of manufacturers: in a highly regulated market, | they can say "sure, our device have caused you harm, but | it operated exactly as FDA (or FAA) required, so take it | up with them". | | See https://marginalrevolution.com/marginalrevolution/202 | 2/11/fd... for example. | | FAA overall has done a lot of good for the safety of the | flyers (and I respect it much more than other regulatory | agencies tasked with protecting us). The problem is that | very often there is a trade off between safety and other | things, and regulatory framework prohibits the people it | is meant to serve from deciding on their own where | exactly they want to be in terms of this trade off. For | example, if motorcycles were invented today, they would | almost certainly be banned as way too unsafe to operate. | That would suck, because I love riding motorcycles. | ryandrake wrote: | Almost all of the innovation that's going on in light, | piston airplanes today is happening in the experimental | category. I've got newer, better, and safer avionics, | sensors, lighting, and engine systems in the E/A-B | category airplane I built in my garage than I would on a | 1970's Cessna. The richness of inputs I have in the | cabin, including a big moving map GPS, ADS-B traffic, | satellite weather, carbon monoxide detection, a vast | array of engine monitoring signals, AOA, and so on | provide so much more in terms of safety and situational | awareness. Pilots in the USA are truly lucky that we have | this option. | gocartStatue wrote: | Ha! Classic Theory of Constraints: most constraints come | from rules that used to accomodate for some limitations. | Most of those limitations are long gone, but we've come | to not question the rules; we mistake them with reality. | [deleted] | xnx wrote: | I can see how the cost and regulation of museum-piece general | aviation planes makes battery powered personal VTOL craft | (despite their other shortcomings) attractive. | mcculley wrote: | > "Even the largest marine engine manufacturers use mass-produced | automotive engines that they modify for the boat mission, an | engineering process I was more than familiar with." | | This is not true at all, unless one is only talking about small | inboard boats. | bluGill wrote: | The larger boards will use mass produced construction and | agriculture engines (I work for John Deere, so while I can't | speak for the company I can tell marine engines are important | enough of a market that we consider their needs when designing | a new engine). | | The largest ships get custom built engines. | mcculley wrote: | I work in the tugboat industry. A quite standard engine there | is the EMD 645. That was never a "mass-produced automotive | engine" and it is not custom. | | Our smallest truckable tug uses John Deere engines. | Everything else uses engines that would never fit in any | automotive application. | dsfyu404ed wrote: | Most marine engines in that size range are used in either | rail, power generating or other stationary applications. | The manufacturers aren't idiots. They're gonna get as many | sales out of a design as they can. | | Regardless, the point is they're not bespoke for your | industry. | mcculley wrote: | I am well aware of the other uses of these engines. I | argued only with the assertion made about "automotive | engines". | BWStearns wrote: | 90% sure he means "largest manufacturers of marine engines" | rather than "manufacturers of the largest marine engines". If | I'm right then the largest mfg probably produces smaller | engines since there's so many more small boats. | dave78 wrote: | Yeah, seems like all you see anymore for I/O engines is | Mercruiser and Volvo, which do indeed use automotive engines. | I'm not sure if there are even any other manufacturers left. | | I'm less familiar with outboard engines, and I don't know | what is more common (I/O or outboards) for recreational | boating. In the Great Lakes, I/Os appear to dominate, but | I've noticed that videos of boating in Florida and the east | coast show a lot of outboards even on the bigger boats. | bri3d wrote: | I think they're referring to gasoline "small" boats, like | Mercury Marine type stuff, rather than full-sized ships, which | generally use industrial / "stationary" diesel engines. I think | the point still stands though, as these larger stationary | diesels are usually shared with locomotives, gensets, and the | like. | mcculley wrote: | Yes, these engines have other uses. But there is an enormous | market of yachts, tugs, etc. smaller than what is considered | to be a "ship" and bigger than any automotive engine could | power. I argued only with the assertion about "automotive | engines". It was true when I was a kid that most engines I | was around on commercial boats were special versions of | automotive engines. It has not been true in my experience for | a couple decades. | nine_k wrote: | "Even the largest marine engine manufacturers use mass- | produced automotive engines" means that they use such | engines for _some_ purposes, say for the smaller | watercraft. It does not mean that they exclusively use | automotive designs. | | So likely both you and the article author are correct. | jabl wrote: | Depending on the kind of yacht, might also be considerably | smaller than an automotive engine. I'm somewhat | superficially familiar with sailboat engines, and the | market leaders in that segment are Yanmar and Volvo Penta. | | Yanmar, AFAIU, is a big maker of various industrial and | agricultural engines, so I guess the Yanmar marine engines | are variants of those. | | For Volvo Penta, I'm quite sure the bigger ones are | marinized variants of Volvo car and truck engines, but for | the smaller ones, they might sell them also as gensets or | such, not sure. | | Beyond Yanmar and Volvo Penta, there's a plethora of engine | makers (Beta, Nanni, Westerbeke, etc. etc.), which make | marinized versions of Kubota engines, which are AFAIU | mostly used for agricultural and industrial equipment (e.g. | those ubiquitous small Kubota tractors). These are | generally well regarded, and sell for considerably less | than Yanmar and Volvo Penta. | mcculley wrote: | We love the Kubotas for generators and other small | workloads. Nothing else we have would fit in an | automobile. The smallest yacht I have worked on had | engines with ancestry in locomotives. | | As another commenter suggested, I read the assertion | about "the largest marine engine manufacturers use mass- | produced automotive engines" as "largest engine" not as | "largest manufacturer". Maybe the author intended the | latter. | blhack wrote: | There is a whole subculture of pilots seemingly trying to run | around some of these regulations using "experimental" aircraft | like the carbon cub: | https://www.youtube.com/@TrentonPalmer/videos | | (I'm not saying Trent Palmer is trying to run around any | regulations, just that his videos are cool, and seem like a good | entry point into experimental bushplanes) | | I'd also encourage anyone here to check out Mike Patey: | https://www.youtube.com/@MikePatey/videos | | His current videos are about a really interesting and unique pool | he is building at his house, but most of his stuff is about even | cooler and even more unique airplanes he builds. He's an | _incredible_ engineer /hacker. | cpp_frog wrote: | Mike is perhaps one the most impressive plane hackers I've | seen. His creativity and transparency (he shows all the | process!) are much appreciated. He inspired me to try and make | some carbon fiber models for RC planes. By the second half of | this year I plan to have built an RC delta wing, and use my | programming knowledge to automate its flight path. | | EDIT: To add to it, and even more remarkable: Mike has | apparently got no formal education in engineering. His twin | brother also wrote a book about the blessings and curses of | ADHD, which both have. | TylerE wrote: | Not so much a "runaround" as "established procedure by the | FAA". The big restriction is that you really can't use them for | commercial purposes. | google234123 wrote: | It's annoying how antiquated the engines used on these single | engine planes. Continental is selling engines designed in the 60s | that are just so inefficient. | bombcar wrote: | The market for small planes is basically entirely gone; the | entire amount is so small that they can't really get through | the cost of certification for the amount they sell. | | Even the relatively modern SR20 uses a Lycoming engine: | https://cirrusaircraft.com/aircraft/sr20/ - | https://en.wikipedia.org/wiki/Lycoming_IO-390 | yetanotherloser wrote: | It's not "gone" as if evaporated; it has been murdered by the | certification requirements. | | The odds of a random stranger dying from a light aircraft | falling on them are trivial, several orders of magnitude less | than the odds of their being hit by a car or being killed by | inactivity; the pilot is free to refuse to take off, so risk | appraisal really is on them; it's time to dump safety | bureaucrats into your nearest woodchipper and CHANGE. THE. | LAW. if you want ANY interesting activities or skills to | survive. | aredox wrote: | It's not the certification: flying is an expensive hobby, | with a huge time commitment. People have moved on to other | hobbies and fads. | | We see the same with dinghy sailing. It used to be a big | scene with hundreds of ordinary people showing up for | regattas. It was killed by windsurfing (at least here in | Europe) and just people moving on to other things ,not | regulation of any sort. | rlpb wrote: | That's a circular argument. Recreational flying is an | expensive hobby _because_ of the certification barrier. | Most of the price is in fuel inefficiencies and expensive | maintenance of ancient engine designs. Airframe parts are | expensive because they 're obscure and certification | requirements prevent modern equivalents from being used | instead. And so forth. | yetanotherloser wrote: | I dunno. I'm pretty sure the lack of barriers to entry, | inconvenient and costly certification, and safety | nannying helped windsurfing get ahead there too. That and | dinghy clubs inevitably devolve into race clubs that | revolve inexorably around the race safety boat, and if | you just want to noodle about or explore you're out of | luck unless you are geographically lucky or you can | afford a yacht. (which is great. But it's an uncommon | privilege) | outworlder wrote: | > It's not the certification: flying is an expensive | hobby, with a huge time commitment. | | People have plenty of expensive and time consuming | hobbies. All hobbies are at least time-consuming, that's | what a hobby is. | | All certifications add to the expenses. It's the reason | why one can't buy a headset off amazon and have to pay 1k | for a used headset. Sure, safety requires certifications | but I guess we went overboard. It's also the reason why | GA aircraft are expensive to this day, even those build | 40 years ago. It's pretty expensive to keep maintaining | old tech at low volumes. I'm rooting for Diamond and | their car-derived engines (as well as the Experimental | aircraft scene). | | Note that boats are also notoriously expensive. | | There's a very good parallel to your example: gliders. | You want to fly cheap (just to fly, not to go places)? Go | soaring. Problem is, it's even more location-dependent. | nimish wrote: | FAA is incentivized to do nothing and sit on its hands. | It's a mess. A good quarter of the country is medically | barred from ever flying, even solo. The chances of this | changing are 0 and it'll get worse. | | Insert the "who could have done this" meme with the FAA | shooting interest in flying and # of pilots. | gburdell3 wrote: | The medical system is really messed up. I would love to | eventually get my PPL, but I also highly suspect that I | have undiagnosed ADHD, and I don't want to essentially | sign away my right to ever get treatment. Fortunately | Microsoft Flight Simulator and VATSIM scratch the itch to | fly for now, but it still sucks that I'll probably never | get to actually do it in real life. | outworlder wrote: | Disclaimer: this is not legal advice, it's just to give | you some ideas. AOPA and EAA have resources that can | professional advise you. | | Note that 'undiagnosed ADHD' holds as much weight as me | saying you have bad energies. There are many conditions | that masquerade as ADHD to a layperson, including some | purely psychological ones (they are no less real, but are | very different from a neurodivergent brain and require | very different treatment). | | If you are otherwise a high functioning adult (can | function in society, operate vehicles safely, etc), get | your third class medical, which should be no problem. You | have to disclose _diagnosed_ conditions. Do a discovery | flight and ask for an opinion from the flight instructor. | If he thinks you are fit, go start your training and | enjoy. | | If, one day, you do get diagnosed (with ADHD or some | other disqualifying condition) _AND_ require medication, | then it 's a problem. If you don't need medication | (because most if not all ADHD medications are | prohibited), don't try to renew your third class medical | (because, if you get denied, it's a big problem) and get | advice about _BasicMed_. It has far less requirements; my | understanding is, unless there 's something strictly | prohibited, if a doctor signs you up you are good to go. | | You won't be able to fly commercial or faster than | 250knots but I suspect you don't care. | | Failing all the above, there's light sports aircraft and | gliders(no medical requirements, you just need judge | yourself to be capable and unlikely to be incapacitated) | - although I am not sure you can operate them while | taking meds; some professional advice required here. | | Disclaimer 2: Obviously the above assumes that whatever | you have does not impair you. This is just to get around | FAA's antiquated view on mental health while complying | with the law. The most important thing is to be safe. If | you really can't due to health issues, then don't, even | if a doctor says you are fine. | | Otherwise, don't give up! | exhilaration wrote: | _A good quarter of the country is medically barred from | ever flying_ | | Can you explain this further? | selectodude wrote: | If you've basically ever taken an SSRI, or been to a | shrink, you auto-fail your medical. | nimish wrote: | Just about everyone who has ever undergone psychiatric | care cannot ever get a medical. There is technically a | process but it is extremely difficult and expensive. | | Some conditions are uniformly disqualifying, for good | reasons. But it results in a perverse situation where a | regular person can choose to either get mental health | care or fly, but not both. | heelix wrote: | Pilots don't suffer from depression, smoke pot, take many | types of medication as a child, or have many other issues | because if you did - the FAA might pull your medical and | you can't fly after that. It can cost tens of thousands | to try to get the FAA to let you fly again if a medical | gets botched. And that is still an if... | trilbyglens wrote: | Probably because it's so expensive! Cheaper and more modern | engines and aircraft could totally make for a new wave of | aviators. | polishdude20 wrote: | Yeah, I would totally get a PPL if it wasn't at minimum | $15,000. | Analemma_ wrote: | Right, but that's the problem: with no market, things can't | get cheaper because there's no capital to innovate with. | That's why General Aviation is in a death spiral | (ironically, since "death spiral" is a GA term): fewer | people buying planes, companies exit the market and | remaining companies have to charge more per-plane to cover | fixed costs, GA becomes more expensive, fewer people buy | planes, etc. | Petersipoi wrote: | Why is nobody willing to take a risk to revive this | market? If the only thing preventing a revival is cheap | planes, couldn't someone get some investor to pay for all | the certifications of their modern, fancy, efficient, | cost effective plane, and then sell a million of them? | | That is essentially how any new industry works. EV's were | too bad/impractical/expensive until Tesla decided to take | the risk and put down the capital to make them | mainstream. Why can't/doesn't someone do the same for GA? | flangola7 wrote: | Why is the market smaller than in the 60s? There's more | people with money than ever. | ben7799 wrote: | There's a secondary issue that in a lot of places the sky | is a lot more crowded and the airports are very crowded. | | I wanted to be a pilot. I took lessons in the 1990s at a | small field, relatively uncrowded, relatively low cost. I | stopped due to weather/money. | | When I tried again after I finished college where I lived | things were more expensive and the airspace was so crowded | you would run up costs waiting in line to take off, and the | whole thing was much more stressful. | | It has to be fun, in a busy enough environment it becomes | stressful enough fewer people want to fly. | abujazar wrote: | Not really - the upper middle class is smaller even though | there's a lot more billionaires. And billionaires in | general aren't hobby pilots. | metadat wrote: | The cost compared to the 1960s seems to be much higher. | Even for "people with money". | 0xffff2 wrote: | It really isn't though. Yes, the GA fleet is extremely | old, but the inflation-adjusted cost of a PPL is pretty | much exactly what it was in the 1960s. | kevin_thibedeau wrote: | Inflation adjusted wages aren't. | cdot2 wrote: | Median per capita inflation adjusted income has steadily | risen since WW2 https://united- | states.reaproject.org/analysis/comparative-tr... | kevmo314 wrote: | Part of the problem is that this V8 engine is a 2x | improvement. It's definitely an improvement, but a sub 10x | improvement isn't enough to bring on a revolution. The | article alludes to investors' lack of appetite for the risk, | I suspect a larger improvement would convince them. | bombcar wrote: | Yeah, all the development that IS going on is happening in | the very light jet market: | https://en.wikipedia.org/wiki/Very_light_jet | | But that's a $2m aircraft vs a half-million one. | jabl wrote: | VLJ's are cute, yes. I'm slightly hopeful about small | scale turboprops too. Yes, generally turbines don't scale | down very well (well, applies to VLJ's to an extent as | well), but if they only could make the capital costs of a | turbine decent enough, the reliability, power/weight, and | cheap and available Jet A-1 would still make such a thing | attractive, I think. | | There's a couple of companies working in this space: | | Turbaero: https://turb.aero/ Turbotech: | https://www.turbotech-aero.com/ | ben7799 wrote: | If he actually got this V8 certified and Cessna switched | to then it might be dirt cheap to run but the 172 with it | preinstalled might be $1M because they will sell so few | and have so much engineering & certification cost to | amortize. | | That's how silly it all is, and why it will stay stuck in | Experimental. | gnabgib wrote: | SR20 you mean (as you linked, but not written). SR22 uses a | Continental https://cirrusaircraft.com/aircraft/sr22/ | blantonl wrote: | ...which incidentally has a very nasty problem brewing with | Continental engines, grounding of all of the manufacturer's | fleet running Continental engines that were made in the | past few years. | | It's actually an aviation crises in the making with 1000's | of SR-22s. | outworlder wrote: | Any more details on that? | blantonl wrote: | https://twitter.com/JonHuntTV/status/1623390223190134784? | ref... | bombcar wrote: | Yep, went with the cheaper one. | jeffbee wrote: | These engines have parts that are interchangeable with pre-WW2 | engines. It's pretty generous to say they were designed in the | 1960s. | _ph_ wrote: | I think that is one of the reasons why the upcoming electric | small planes are such a huge thing - getting rid of not only | combustion engines, but very old and inefficient combustion | engines. Could be a real game changer. | outworlder wrote: | They are probably not going to take off (pun intended) any | time soon. Just fuel reserve requirements alone are about the | full range they have. | | I suspect hybrids will be developed first. Basically an APU | sending power to the main motor + a relatively small battery. | The 'APU' can be relatively compact and deliver a lot of | power, with less engineering requirements (can place it | anywhere, doesn't need to interface with a prop). If it fails | you have some emergency battery power. Electric motors are | incredibly strong and have very few moving parts, so | reliability is higher. They are also light. | | Net net, there's some complexity and the combined equipment | may be heavier (may! existing powerplants are some heavy | beasts) but there's probably advantages. | | Certification would be horrendous, I imagine. | jacquesm wrote: | They'll end up with a fraction of the range/payload of the | old planes. | Toutouxc wrote: | I'd literally fly a bicycle with wings for fifteen minutes | at a time if that made [fixed-wing] aviation more | affordable. I live in one of the better-off eastern-bloc | countries and I make significantly more than most people I | know, but getting a PPL would almost certainly ruin me | financially at this moment. | | I know that paragliding and hang gliding exist, but those | are a bit out of my comfort (and safety) zone. | outworlder wrote: | There are also actual gliders (aka soaring). These are | planes in all but the engine, and are pretty safe. | jacquesm wrote: | There are clubs that own small aircraft that you can fly, | I've done some time in these: | | https://en.wikipedia.org/wiki/Ikarus_C42 | | Technically it is a microlight but top speed and handling | are much closer to a regular GA craft. I absolutely loved | it and if my eyesight was better I'd definitely go for a | license. | ElevenLathe wrote: | Maybe that's fine if the point is just to go up on a | Saturday for fun and land at the same field you took off | from. | UniverseHacker wrote: | Continental sells a range of general aviation engines based on | modern Mercedes Benz diesel car engines, initially developed by | Thielert as the Centurion. They run on regular Jet-A fuel, and | are extremely efficient. | | https://www.continental.aero/diesel/engines/cd155.aspx | | https://en.wikipedia.org/wiki/Thielert_Centurion | | I think these, combined with biofuel based Jet-A are a good | solution to this problem, as electric tech is a long ways from | having the range needed. | | Maybe someone who knows more could chime in why these haven't | already completely replaced the ancient air cooled leaded gas | motors? My guess is that they're very expensive... | jabl wrote: | I think this is the $100000 conversion alluded to in the | article. Not sure what makes it cost that much. Maybe the | same thing that seems to have caused GA to stagnate, very | small volumes combined with high certification costs. | | (There's also a company called Austro engines that makes aero | diesel engines, AFAIU even based on the same MB car engines | Continental/Thielert uses. I think Austro is a subsidiary or | spinoff of Diamond, so that's where you see these engines | used.) | UniverseHacker wrote: | I would guess that whatever makes it cost so much would | equally apply to this solution once it is certified and not | experimental. The gas V8 will be much less fuel efficient | than a small turbo diesel, especially at altitude where the | turbo offers huge advantages. | | Those Mercedes engines are found in small cars and delivery | vans around the world, and are widely available and pretty | cheap. For example, the Centurion 3.0 uses a Mercedes-Benz | OM642 which is found in Freightliner/Sprinter vans, Jeeps, | and tons of other very common cars. You can buy these | engines straight from Mercedes for like $8k. | | In this case, the author mentions using an aluminum marine | GMC V8, but not which one exactly. This is most likely | based on the LS V8s, which are fairly expensive motors, and | a pretty ancient design (e.g. pushrods). | bluGill wrote: | You need to get the whole airframe certified to change the | engine. If the airplane hasn't been in production for 40 | years+ who will pay for that? Does the engineering data | needed to start that process even exist anymore? | UniverseHacker wrote: | Interestingly, I found that the airplane in question here, | the Cessna 172 was actually sold with the Thielert / | Continental diesel, but ended up cancelling it because they | were so much more expensive than the gasoline models that | nobody bought them: | | https://en.wikipedia.org/wiki/Cessna_172#Special_versions | jabl wrote: | I think if you want to see 'modern' gasoline powered piston | aviation engines, you have to look elsewhere than Lycoming or | Continental. ULpower and Rotax make fuel injected aero engines | with FADEC. I think Rotax has even certified some of their | models. | nickff wrote: | This is a product of the regulatory process. I am sure Cessna | would love to sell new stuff, but it's just not worth it for | them or their clients. | mopsi wrote: | The whole small piston-engine plane industry collapsed in | 1980s because of excessive liability: https://en.wikipedia.or | g/wiki/General_Aviation_Revitalizatio... | | If I recall correctly, Cessna was found infinitely liable for | every plane manufactured, meaning that each new plane off the | assembly line increased their potential overall liability | without liability over decades-old planes expiring and | decreasing it. | mfkp wrote: | That's true of US-based manufacturers, but foreign | manufacturers thrived during that time (French, etc). | light_hue_1 wrote: | > If I recall correctly, Cessna was found infinitely liable | for every plane manufactured, meaning that each new plane | off the assembly line increased their potential overall | liability without liability over decades-old planes | expiring and decreasing it. | | This was a problem in the 90s. And it was fixed! Back when | the government still fixed things. https://en.wikipedia.org | /wiki/General_Aviation_Revitalizatio... | ck2 wrote: | Leaded fuel, leaded fuel fumes and spray. | | Adapt the engines or ground them. There's no acceptable middle | ground. | | It's like secondhand smoke to the rest of the population. | | No your "immune system" does not handle lead, it's forever and | why it was banned in cars for 25 years | | https://www.thedrive.com/news/42218/if-leaded-fuel-is-so-bad... | | https://www.nbcnews.com/business/business-news/leaded-gas-wa... | jabl wrote: | The big news in the past decade or so in this space is the | G100UL fuel which now has a STC for almost(?) all prop planes. | | Not sure what the next step, regulation-wise, is. An official | 100UL spec followed by the sunsetting of 100LL? | sand500 wrote: | The later is already happening as cities ban the sale of | leaded fuel in their airport. | sfeng wrote: | Tiny correction, it's not really true that an experimental can't | land at a class bravo airport. | blantonl wrote: | There's really very little reason for a GA single piston | aircraft to land at a Class B airport anyway. | sokoloff wrote: | I fairly regularly (several times per year) land our A36 at a | class B airport: mostly BWI, PIT, and DTW. They are often the | most convenient airport to access something downtown (such as | a sporting event via public transport or a shorter Uber | ride). Even our older 182 could blend in reasonably well | speed-wise [though it often meant flying at full cruise power | through much of the approach to keep the speed up to 135-140 | KTAS]. | base698 wrote: | Family has extra members so keep thinking about an A36, | currently fly a Mooney. Seems to be better than paying | Baron upkeep. | | Any advice welcome. | selectodude wrote: | Landing at a class B airport is flipping cool, for one. | base698 wrote: | I did it once at KLAS. Way closer to the hotel. | jaclaz wrote: | [2020] | | Seemingly the author is still working at it: | | https://corsairpower.com/ | | Last update (2022): | | https://airfactsjournal.com/2022/10/the-20-hour-cessna-172-e... | falcolas wrote: | Very cool. And also a little depressing that the state of the | art is still back where it was in 2000 when I last looked at | this. | | May they drive a revolution. | titanomachy wrote: | He complains that the plane which cost him $45 an hour to rent 30 | years ago costs him $125 to rent now. Isn't that basically just | inflation? $45 in 1992 is $104 today. | cjbgkagh wrote: | I think his point was the same planes are much older today and | so he expected them to be cheaper after inflation. They were | also old when he first flew them so the capital expenditure was | likely already a small component of the per hour price. | sowbug wrote: | The complaint is that it's the exact same plane, but 30 years | older. Inflation sucks, but with most durable goods you get the | benefit of improved technology. Imagine paying $1,000 for a PC | today -- not bad, except what if it were a 60MHz Pentium with a | 40MB hard drive? | cholmon wrote: | I did a discovery flight with my son last summer in a C172. | We had a blast, but I was pretty surprised how old the plane | felt. My recurring thought is that Cessnas are like the | TI-85s of airplanes; ubiquitous workhorses frozen in time. | | Is it just Cessnas though? Is this the way all small planes | are? | greycol wrote: | There is a pretty big "experimental" scene with small and | ultra light airplanes. Experimental here basically meaning | you can't use it for comercial. So mostly because of the | costs of certification and liabilities involved and how the | segment of the market is lifestyle/hobyists you end up with | a lot of nice modern small planes that only the | owner/syndicate flies and only for personal flights. | | There's plenty of neat little planes out there, my favorite | was basically the go cart equivalent of a jet that I saw at | our club airport. Something like this | https://www.esato.com/board/viewtopic.php?topic=92070 | TylerE wrote: | The GA market pretty much died in the late 80s. Outside of | very high end flight schools (think University programs | targeting potential airline pilots), or the doctors and | dentists flying Cirruses... yea, they pretty much ARE all | that old. | | Even the 172 went totally out of production for a decade. | Cessna almost went under. | tcas wrote: | For certified piston aircraft, generally yes. The engines | are pretty much made by a few manufacturers based on | ancient designs, and while you may get some "newer" | benefits in some models, such as fuel injection (instead of | carborators), or digital engine control (FADEC), they're | pretty much ancient technology compared to modern engines. | Most still have manual mixture control for example and very | limited monitoring. | | The only example in that class (sub $750k) I can think off | the top of my head with a better engine is DA40 NG, which | uses a modified Mercedes diesel engine. | docandrew wrote: | It's not just Cessnas. Besides the normal wear and tear of | a plane that's potentially 40 years old, most of the | single-engine planes at a flight school are going to see | extra abuse from all the student pilots. | sowbug wrote: | Someone else can tell the story better than I can, but | supposedly the cost of certification of new light-aircraft | models got out of control in the 1980s, which stifled | product evolution, so it became more cost-effective to keep | a really old plane airworthy than to scrap it and buy the | latest and greatest. I do know there's been a lot of | innovation in the LSA (light-sport aircraft) segment, so it | does seem odd that four-seater and two-seater evolution | would diverge so much. | | I have a feeling I'm perpetrating a certain angle to the | truth (maybe that product-liability lawyers suck). I'm just | passing on what I heard -- please don't shoot the | messenger. A more comprehensive retelling would be | appreciated. | kevin_thibedeau wrote: | You're not paying for a depreciated product. You're paying | for the maintenance and operating fees which don't depreciate | in value. | docandrew wrote: | On an airplane you're really paying for the engine. | Typically after 2000 hours (depending on the model) they | are supposed to be overhauled, which will be a cool $20-30k | or so for something like the 172 in the OP. If you're | airplane shopping you'll see a very tight correlation | between the asking price and the "SMOH" time or hours since | major overhaul. | nine_k wrote: | For $20-30k, you likely can buy and install a new engine, | or two, were it car engines. (That's the route taken in | the article.) | docandrew wrote: | It seems like kind of a slam dunk, though I wonder about | the reliability of a car engine left at full-throttle (or | close to it) for long periods of time the way airplane | engines are. | melling wrote: | I'm pretty sure everyone understands you can't compare the | price drops of electronics with durable goods. | | Are cars cheaper today? How about all that construction | equipment the Caterpillar sells? | | Are the price of tanks and jets getting cheaper? | Rebelgecko wrote: | If you buy a new car today, it'll be better than a 40 year | old car in pretty much every metric. Performance, fuel | efficiency, comfort, safety, etc. | | I think the OP is complaining that they're paying "modern | vehicle" prices to rent a plane that has had minimal | changes since the 1960s. The vast majority of old cars | (other than collectable ones with low mileage) are gonna be | cheaper than they were new. | akiselev wrote: | They're all much cheaper than they were and more advanced | by leaps and bounds. | | GA airplane production collapsed from a peak production of | 17k a year in the 1970s to a few thousand a year starting | in the 90s continuing to today. Cars and tractors and tanks | and even jets have all seen their markets grow, not | disappear. | Retric wrote: | That's sometimes true but the standards have improved so | much it's hard to do these comparisons. | | A new Model T in 1925 cost had fallen to 260$, that's | roughly $4,348 in todays money. Sure it's missing a great | deal of modern features, but it's hard to get a new golf | cart at that price. | rocket_surgeron wrote: | > Are cars cheaper today? | | Cars are AVAILABLE for pretty much the same price. | | People WANT more expensive cars. | | The Volkswagen Beetle was pretty much the least expensive | car on the market for its entire sales run in the United | States. | | The inflation-adjusted price of a Beetle in 1973 was around | $12,000. | | The price of a Chevrolet Spark in 2022? $13,000. | | Nobody wants a Spark, though. They want an SUV. So Chevy | killed the Spark. | | Before Chevy discontinued the Spark you could walk onto a | lot and drive away in one of the dozen or so Sparks they | had rotting away in the corner for less than the price of a | VW Beetle in 1973-- and the Spark was superior in every | measurable way. | | 2023's cheapest car is the Nissan Versa. You can 100% find | dealers who will part with one for less than the cost of a | Beetle. It is also better than the Beetle. | grepfru_it wrote: | The car today that costs the same as the price of a car | yesterday. But your car of today provides airbags, ABS | brakes, much better crash protection, backup cameras, | power windows, automatic transmissions, the list goes on | and on. You are getting way more for the same dollar you | paid in the past for cars | PaulHoule wrote: | Carmakers want to sell expensive cars. | | Back in the 1970s my dad had plenty of stories about how | American car dealers had all kinds of excuses why they | couldn't, wouldn't or shouldn't sell you a small car. | | Now the Japanese car dealers do the same thing. | | A few years I went to a Honda dealer looking for a new | Fit, found they didn't have any because "the factory | washed out in a flood" but they had 50 CR-Vs which are | made in the same factory which were somehow not affected | by the flood. | | They really ought to put up or shut up: when they have a | $7000 sales incentive on that monster vehicle that is not | a sign that people want to buy a monster vehicle but it | is a sign they want to sell you a monster vehicle. | Aunche wrote: | The only reason for a manufacturer to want to produce a | cheap car is to sell a ton of them at a low margin. If | not enough people are buying them, then there's no reason | to continue selling them. At sub-$20,000, you're going to | be better off buying a used car than a new, bare bones | car. This wasn't the case decades ago when cars were a | lot less reliable and generational improvements were much | larger. | | >when they have a $7000 sales incentive on that monster | vehicle that is not a sign that people want to buy a | monster vehicle | | What cars are you talking about? It's generally the | "monster vehicles" that have the greatest markup (e.g. | Bronco Raptor) | sn_master wrote: | > People WANT more expensive cars. | | Because it's very easy to get financing for a car, that's | why. If they had to pay it out of pocket you bet they'd | choose the cheaper car. | el_don_almighty wrote: | The core features of most capital products are basically | commodities. Every car now has an automatic transmission, | A/C, fancy radio, electric windows, etc... | | Manufacturer's can only increase prices (and thus keep | ahead of inflation) by innovating the edge with new | features, wanted or not. | | Is Ford or Caterpillar really best positioned to design and | deliver a mobile flat-panel touch screen device? Not | likely, but putting one in their vehicles creates | opportunities for higher prices and new innovations. | | VERY LITTLE of this is available in the aircraft market | where every new part number requires justification, | testing, and approval. | | The health-care market is very similar yet demand is so | high and inelastic that it still justifies huge | investments. | | Aviation... not so much | mc32 wrote: | Especially in a heavily regulated industry --where changes | takes years before approval is granted. | mannerheim wrote: | You can get a street-legal car from China for about a | thousand dollars. | | https://www.hotcars.com/these-are-the-cheapest-new-cars- | you-... | ceejayoz wrote: | Their cheapest one failed a crash test against a child's | _pinata_. | | https://www.youtube.com/watch?v=EkgPqkJ5iJI | mannerheim wrote: | Well, yes, they're not particularly good or safe cars. | someweirdperson wrote: | As unsafe as cars in the 60s. | mc32 wrote: | No, 60s cars were rigid boxes that did not crumple | --which because of a lack of other safety features meant | you got ejected or got banged around inside this metal | box. These things allow you to get squished inside the | foil box. | ceejayoz wrote: | I didn't expect one to fare well in a crash test against | another car. | | I also didn't expect one to receive significant damage | from a lightweight cardboard box. | | There's "unsafe", and then there's _this_. | Dylan16807 wrote: | It messed up the bumper? Wouldn't that happen with tons | of cars? | | And roof rack damage is definitely not a safety issue. | ceejayoz wrote: | None of that damage should have occurred from a pinata. | | At $1,000, it's probably safe to assume these aren't the | only cheaply made parts of the vehicle. | 8note wrote: | How much is a 30 y/o beater car? Even one in good | condition? | ben7799 wrote: | He's in a cheap area or something. | | Instruction in a 172 is more like $250/hr at the nearest | airport to me in Massachusetts, with the plane being at least | $200/hr of that. The gotcha is I think they are modern 172s, | which are probably more than $500k each to buy at this point. | | I took lessons in the early 1990s and it was $125/hr in a 152 | which was a much smaller less capable airplane. People are too | heavy now, the 152 sized plane is no longer used as much | because 2x 200lb adults will put it over it's max takeoff | weight if the gas is topped off or something. | | Everything about all of it is super wacked. The leaded fuel, | the way people cling to old planes cause the new ones are so | stratospherically expensive, the ancient technology because the | manufacturers need so much money to get anything approved, | etc.. | asciimike wrote: | Yeah, prices in CO (where Corsairpower is based) are | ~100-150/hr wet for a 172, plus 30-40/hr for an instructor. I | think I'm paying ~120/hr plus a varying "fuel surcharge" of | ~20/hr for a T41-D. | | The main issue right now is that all the flight schools are | booked up and you can't get a DPE booked less than two months | out. | grepfru_it wrote: | >People are too heavy now, the 152 sized plane is no longer | used as much because 2x 200lb adults will put it over it's | max takeoff weight if the gas is topped off or something. | | Why would you fly with full fuel tanks while taking lessons? | However, your comment is correct that 152 is horribly | underpowered | Pasorrijer wrote: | Safety purposes. If you're away from the school, a student | gets off course, bad weather, etc, they would much rather | you have extra fuel than too little. | | It's also dependent on what's being flown. Sometimes they | will fly with less for weight and balance. | ghawk1ns wrote: | That's innovation in my book. Nothing wrong with trying to | reduce your costs while improving emissions, especially when | we're talking about 30+ year old technology. | [deleted] | kylecazar wrote: | There must be something so incredibly gratifying about | engineering a thing, and then successfully betting your life on | the soundness of its design. | w10-1 wrote: | This person lost a lot of credibility over decades of promoting | corsair engines which failed. | | Many people are complaining about the ancient technology, but | newer ones offer very few advantages. | | An piston GA airplane runs basically at two speeds: flat-out for | take-off and cruise. For both the fuel/air mixture is easily | optimized to optimal, and the slow engines reduce waste. Benefits | from EFI are decent but below 10%. Supercharging helps a lot at | higher altitudes, but most planes aren't pressurized or carry | oxygen, so even that has limited benefit. | | The main benefit of the current engines are robustness: I know | people who have even flown without oil or with a blown valve. | Many experimental builders combine mechanical magnetos with | electronic ignitions, partly for fuel efficiency but mainly to | lower idle speed on the runway when landing. | | The real difficulty is not technology but service. There are very | few engine rebuilders, and they are happy with the current | limited supply of engines keeping prices up. | | And unless you built your own experimental plane, or you get an | experimental where the FAA permits owner inspections, the main | cost of flying is service on the plane. | | Aside 1: many engines have STC's to run car avgas. All require | there to be NO ethanol for its impact on the fuel system. The | studies I've seen of those engines report bottom rebuild times | more like 800-1000 hours rather than 2,000 hours, and of course a | higher incidence of valve-related problems. | | Aside 2: experimental planes are not a subculture. They form the | largest number of new planes. The $200K+ alternates only go to | the wealthy. And after 50 years of competing companies, only one | has been the overwhelming success, in both popularity and | numbers: Van's aircraft. They use old-style, simple designs and | construction, and (mostly) old-style engines, preferring the | Rotax for their RV-12. | [deleted] | rdl wrote: | One of the biggest markets for small aviation engines which run | on something other than 100LL is small drones -- running on JP8, | Jet A, or Jet A1 would make military logistics far easier and | safer. Even road gas would be a reasonable alternative to 100LL, | and both diesel/kerosene and gas are easier to find in the bush. | Kerosene/diesel are probably better due to risk of water in the | fuel at these places, but diesel engines tend to be heavier than | gas. | | Deltahawk, Thielert, etc are the bigger projects I've followed. | Getting an actual certified engine is...hard. ___________________________________________________________________ (page generated 2023-02-09 23:00 UTC)