@AlanRail posted:Independent wheel rotation would eliminate the need for a continuous spinning axle. the fast angle wheel as was said does compensate for the travel distance which tends to keep the wheels on the track. It is a simple easy to manufacture solution.
Simple solution? I think not! Imagine how expensive it would be to develop independent suspension for the weights that railcars carry! There's surely a very good reason this has never been done, and I suspect it's a question of economics! The present system of tapered wheels with fixed axles works very well. The tapered wheels also actually help to gently steer the car around the curves as centrifugal force pushes it to the outside of the curve.
