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
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