Quote:
Originally Posted by Mr. Lim
It was noticeable because when we drove forward or backwards and stopped quickly, you could still see the rollers on the tops of the wheels spinning!
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The key here is "stopped quickly". Probably quickly enough to cause the mecs to slide and the rollers to spin.
The affordable mecs with bearingless rollers used for FRC will exhibit some roller rotation (and associated loss of vehicle speed) due to axial free play in the rollers and compliance of the floor material (carpet).
The only way to resolve this discussion is to take some high speed timestamped video of a mec traveling at a constant speed in a straight line in the forward direction.
If anyone reading this has access to such a video would you please post it?