Quote:
Originally Posted by GeeTwo
I think that it is necessary to raise the omni wheel, because it is geared twice as fast as the fixed wheel; it would be spinning against the carpet whenever you were driving in traction generating heat and wearing down the wheel. In Aren's previous answer, he refers to a spring lifting the moving wheel up. I don't see one in the assembly directions, but it may be implicit in the way pieces fit.
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It won't really wear the wheels since there is no down force on the wheel other then the weight of the module itself.