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(DIR) Return to: General Discussion - Dynamos, Generators, Alternato...
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#Post#: 28243--------------------------------------------------
Dynamos. Stuart and Other.
By: Steam Technology Date: August 14, 2020, 4:17 am
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Following on from the resto of the smaller Stuart Dynamo, I have
made a housing for a PM motor that has better specs.
[attachimg=1]
[attachimg=2]
[attachimg=3]
Rather than copy the housing of the Stuart I decided to go with
a style more like the larger Stuart or PMR type
#Post#: 28249--------------------------------------------------
Re: Dynamos. Stuart and Other.
By: txlabman Date: August 14, 2020, 1:40 pm
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Well done.
#Post#: 28281--------------------------------------------------
Re: Dynamos. Stuart and Other.
By: Steam Technology Date: August 15, 2020, 5:07 pm
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[quote author=txlabman link=topic=2924.msg28249#msg28249
date=1597430408]
Well done.
[/quote]
Thanks Charlie.
#Post#: 28342--------------------------------------------------
Re: Dynamos. Stuart and Other.
By: Steam Technology Date: August 17, 2020, 5:36 pm
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Tested on new base, results to follow.
#Post#: 28565--------------------------------------------------
Re: Dynamos. Stuart and Other.
By: Steam Technology Date: August 25, 2020, 5:15 am
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Although, as previously stated, the pm motors in these two
generators are poles apart in performance, both have their
advantages.
The Stuart generator needs to be spun at around 4000 rpm to
generate 2.5v no load whereas tne industrial generator will
generate 2.5v at 500 rpm which is a major difference.
When loaded with a 2.5v lamp the Stuart rpm increases to 6000
while the industrial goes up to 1850. Still a large margin.
So the industrial with its lower rpm to voltage ratio is better
for most steam powered applications, able to give better voltage
performance and the current output of both is similar. The
Stuart being 1A while the industrial is 1.5A.
When running a 2.5v lamp there is very little visual difference
due the way the filament glows to produce light.
With an LED, however the Stuart comes into its own needing
higher rpm. This means there is no visible flicker whereas the
industrial has very visible flicker due to its slower speed.
The commutator is the reason, slower speed slower changeove.
So while the imdustrial (or other low rpm to volt ration PM
motors) are good for higjer loads at lower speeds,. When it
comes to LED,s howver a higher rpm to volt ratio, such as the
Stuart, is better.
#Post#: 48339--------------------------------------------------
Re: Dynamos. Stuart and Other.
By: Bentwings Date: January 10, 2022, 12:22 am
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I jusotbthe same dynamo.
I haven tried it out but I thought maybe my cordless drill might
run it fast enough fo some output. Unfortunately I’m really new
to all hysteria. I have a digital multimeter so I gue could see
if I get anything out. I have several stepper motor but frankly
I don’t know hoe to even check them. I have a video. Saved that
shows conversion togeerstor as well as all yhe electrical stuff
to hook that up so maybe that’s whee I should start. I yhink
ther are two #14 and a larger #17.
Simple Quentin. What otput should ok for if I just drive these
with cordless dril? The larger one is ften used on small cnc
machines there is supposed to be quite a bit oforque especially
with gear boxes. I think I have a dc motor with big reduction
gear box it has about a 56 mm output shaft. I think I’ll order
some or ing s for belt drives I have spring drive material
Saw flat belt material so I’ll possibly add some to Amazon order
just to have it’ll. I have to build s shaft suupport for the
ewsteamer as the optional one is for vertical engines. I can
get a metric round for a lex able mount. Think I’ll make this
double ndsupportrd so. Can load it evenly. I also have a
matching brass flywheel ordered that has round grooves and flat
surfaces. I can make craned pulleys if I have to. Tiallmimhave a
here speed transmission on ghesketch psd. It will have dog
clutches rather than synctonizers I think I’d like to not make t
over complicated. That will come lstrr. I also found s magnetic
clutch but I’m holding off on that temporarily. I could make a
prong brake Dino if I wanted but I’d realy like to test torque
electricallly for now. . I’ll limit steam to 50 psi for now. I
may get a small ultra quiet air compressor to start with if the
boiler isn’t done. I’m cutting the internal tubs now. I got
twosgnesium anode bars and just got a cool Cincinnati anode.
Thatthreato the boiler head. Same one I used on my boat. I
though I ordered two nut ily got one. I can make good ones from
the magnesium rod too.
Anyway I end some electrically. I’m way behind there
Byron
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