Skateboard physics: moment of inertia

Understanding which forces are at play when the axle rotates on the ground is a pesky problem of mine. The goal is to obtain a good understanding of the effect that different axle lengths have when turning (an effect that’s overstated, I feel, in the community). It turns out the problem is not so unattackable. In this post, I report what I’ve found so far. Continue reading Skateboard physics: moment of inertia

Skateboard physics: squeezing bushings

Occasionally, people assert that TKP trucks (i.e., trucks with significant forward rake) turn “progressively,” while RKP trucks (i.e., trucks with minimal rake) turn more “linearly”. That, at first glance, can only mean that the trucks resist turning in such ways. In this post, I check for patterns in the way trucks resist when a rider leans on a skateboard. Continue reading Skateboard physics: squeezing bushings