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Re: Contact Area and its Relation to Friction?
"Recently we did a tire traction experiment . . ."
Loolking at your results, which were for dynamic friction on carpet, the highest effective coefficients of friction were achieved by the IFI wheels, and with the IFI wheels, the highest coefficients of friction were achieved by the wheels with the most lightly loaded contact patches.
In other words, in your tests, for the IFI wheels, for a given weight, more contact area gave more friction. This is a fairly common result for high-traction materials on smooth surfaces. Looks like it could apply on carpet too.
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