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#Post#: 55334--------------------------------------------------
2 speed transmission
By: MadeForThat Date: February 2, 2023, 9:53 pm
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Bought an RC transmission, it has a 1:8 and a 1:4.8 and in
between is a neutral. I intend to use this with the H75 engine
to power a small locomotive, but with some creative planning I
think it would be quite nice to use it for giving fast and low
torque engines some extra torque. Everything
runs on bearings and all the gears are very hard sintered steel.
I don't know if the part that engages or disengages each gear
will be able to hold up to being the "clutch" of my locomotive.
Thought it may be of use for y'all!
(HTM) https://a.aliexpress.com/_mKqrLAS
[attachimg=1]
#Post#: 55454--------------------------------------------------
Re: 2 speed transmission
By: txlabman Date: February 7, 2023, 12:13 pm
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An interesting project.
I look forward to hearing how it turns out.
#Post#: 56271--------------------------------------------------
Re: 2 speed transmission
By: MadeForThat Date: March 27, 2023, 6:27 pm
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Well these pics are from a few weeks back, but I have not
advance any further anyways, here you can kinda get an idea what
my locomotive's powertrain will look like. The powered trucks
are obviously the most complicated part, but with the stainless
RC truck drive shafts and transfer case, it really couldn't be
much easier. I'm stuck in a spot of trying to make it functional
with very little attempt at looks, or look great and take years
to finish. Tough choice but I will just do it the best I care to
as I go. [attachimg=1]
[attachimg=2][attachimg=3]
#Post#: 56272--------------------------------------------------
Re: 2 speed transmission
By: AirSpyder Date: March 27, 2023, 7:23 pm
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That looks pretty cool so far, I will be watching your
progression with interest.
#Post#: 56277--------------------------------------------------
Re: 2 speed transmission
By: MadeForThat Date: March 27, 2023, 8:12 pm
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Yeah pretty excited about it, but there are a few big details I
need to design and build before I can even work on the
frame.namely I need to get power to the transmission through a
clutch and a reversing mechanism. Reversing will be pretty easy,
just have a switch between 2 sets of gears, one with 1 gear one
with 2. Will allow me the opportunity to reduce the speed as
well, it currently will travel just over a foot a second at
slightly above idle (~2000rpm.) Don't really want it hauling too
fast, all my track was printed for a Christmas train I made for
work this year, and I made the corners VERY tight. The other
detail is the powered trucks. Need to make a 90° turn from the
driveshafts to the wheels. Got some gears but need to make a
frame with bearings. I got the wheels from an absolutely
horrendous vendor on ebay. (Ana.kramer, Roll-ez wheels) I don't
need to go into that, but I am banned from buying from him
because I had the audacity of asking for part dimensions before
I purchased. Dude has a hell of an ego
#Post#: 56282--------------------------------------------------
Re: 2 speed transmission
By: txlabman Date: March 28, 2023, 11:55 am
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Cool Project.
Thank you for sharing.
I look forward to the next update.
#Post#: 57075--------------------------------------------------
Re: 2 speed transmission
By: RedRyder Date: May 10, 2023, 5:11 pm
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This is a great project.
Thanks for posting it.
Would a Shay type drive gearing slow it down enough?
If not a worm gear drive ought to do it.
Both work with 90 degree offset.
#Post#: 61494--------------------------------------------------
Re: 2 speed transmission
By: txlabman Date: March 7, 2024, 10:04 am
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Any update on this project?
#Post#: 61515--------------------------------------------------
Re: 2 speed transmission
By: gbritnell Date: March 8, 2024, 6:17 am
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Neat looking project!
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