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stair wheels Answered

inspiration:
http://www.beast.com/stair-rover-skateboard 
http://sciencefictionruminations.files.wordpress.com/2011/03/damnation-alley-vehicle1.jpeg 
http://i.ytimg.com/vi/AF2JgITeQsM/hqdefault.jpg 

How to  Motorize such a thing as the latter 2?  I also recall a 6 wheeled motorized hand truck in a Silence of the Lambs sequel.  Cant find that image, tho.

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Downunder35m

4 years ago

The drive shaft for the three wheels is in the centre, connected with sprokets to each wheel.

Quite simple really although some models use a hydraulic direct drive for each wheel.