Subject:
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Re: R: How to make a differential when you've got no one?
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Newsgroups:
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lugnet.technic
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Date:
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Sat, 21 Dec 2002 21:07:06 GMT
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Viewed:
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3667 times
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"Luis Hernández" <lmhariano@latinmail.com> wrote in message
news:H7GE3v.Lxo@lugnet.com...
> Well... I checked Mike Fusion's thin differential (
> http://odin.prohosting.com/mrplanet/thindiff/thindiff.htm ). It works
> fine... but it's simply too big!!!! So I had to think about a smaller diff
> that would work the same way... and that's what I got... using pulleys
> instead of 40-tooth gears and only 8 tooth gears.
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=29841
>
> You'll see there's not crown gear to drive the differential,but you can • use
> rubberbands or make a wheel rub against the diff (see below, with a
> monospace font)
>
> AA AA
> ============
> DDDDDD AA
> DDDDDD AA
> DDDDDDWWWWWW
> DDDDDDWWWWWW
> ============
> AA AA
>
> DDDDDD is the diff, AA is axle and WWWWWW is the wheel&tire from 8232, • 8222,
> 8205, etc and === are beams, liftarms, or whatever you want to use for
> holding the diff and wheel. Make sure the wheel makes contact with the
> pulley so they'll turn in opposite directions
>
> Thanks a lot
>
> Luis
I was working on using the pulleys and even have done one with the 24T gear
but i was staying with the direct non-slip drive, and the 24T one has the
axel off-center. but i did find out that following the same instructions
you can use the new double bevelgears ( iforget the tooth count) but they
did come with the Spybotics set gigamesh
http://shop.lego.com/xt_Imagepopup.asp?Theme=&XMLPath=2057&iFile=/shop/Produ
cts/TYPE10
you can see the gears driving the "tri-star wheels" it does make the diff
smaller in diameter.
sorry i couldn't find a peeron ref.
m.
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