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Spur Gear Diff

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Ian S C	12/12/2011 10:52:51
7468 forum posts 230 photos	Seems the Chinese made differentials (They make most things the days), I thinking of the South pointing Chariot, made about 200/300 AD, but possibly much older, apparently they had to reinvent it a number of times, theres some interesting reading on google about it. Ian S C
david Garrett	17/10/2012 03:55:45
3 forum posts	I have been working on a design for a 1.6in scale Minnie and I am just now starting to design a spur gear differential for it … this YouTube link has a nice cartoon of one in slow motion LINK P.S. the 1.6in (vs. 1.5) scale was chosen because I have copper tubing of the correct size of a 1.6in scale boiler barrel …
Michael Gilligan	17/10/2012 08:01:42
23121 forum posts 1360 photos	Great animation, thanks David Whilst visiting YouTube; have a look at this, from Chevrolet. MichaelG.
david Garrett	20/10/2012 04:57:55
3 forum posts	Michael Thanks! … I remember seeing that video in 7 or 8^th grade shop class dave g
Ady1	20/10/2012 09:51:13
6137 forum posts 893 photos	All good stuff The easiest way to visualise a spur gear arrangement is to look at the picture 7 minutes and 12 seconds into this Utube video MichaelG supplied (one mouse click stops the movie, another mouse click starts it) Then in your minds eye, turn every gear into a spur gear, the main drive gear arms will have a separate spur gear arrangement to each drive shaft, so you will have two seperate spur gears at the top and bottom of the arms To generate the "differential effect" the two spur gears now required at the top and bottom of the arms will need to be offset and meshed with each other as well as being meshed with their own respective driveshaft easy peasy lemon squeezy Edited By Ady1 on 20/10/2012 10:21:32

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