Thread: pinewood derby
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Posted to rec.crafts.metalworking
Richard Lamb
 
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Default pinewood derby

Leo Lichtman wrote:


Narrowing the tire tread to a V has three benefits:
1.) Lowers the moment of inertial of the wheels, so the accelerate faster.


Maybe. A few decimals down...

2.) Cuts air resistance of the wheel.


At these speeds air resistance is a small part of it.

3.) Lowers rolling resistance.


I think this is the one that matters.

However you can get away with it...


Richard