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Unread 20-05-2011, 12:36
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Re: 4" vs. 6" + 8" Diameter Wheels

Quote:
Originally Posted by Andrew Schreiber View Post
Worst case scenario, solid wheel made of 6061 Aluminum 1 inch thick. (I picked a type of Aluminum)

Code:
D (inches)	Moment (in^2*lb)
4	         2.44
6	         12.34
8	         39.00
Yes, useful exercise for students.

The numbers above can't be used, of course, to answer the original engineering question, to wit: all other things being equal, how much acceleration advantage does a 4" wheel vehicle have over a 6" wheel vehicle (where both the 4" and 6" wheels have been reasonably individually optimized for the vehicle).

Does anybody have CAD models (from this or past years) of 4" vs 6" drive train options which included enough detail to calc the mass and moment of the wheels?


 


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