Rotation of a part independent of the base

[rzoeller]

Originally Posted by KyloRen42

Yes, I am looking for pure mechanical. The only way I can think of is to have the cylinder floating on a small reservoir of water, but I am pretty sure that'd not allowed.

Without strengthening the Earth's magnetic field, I can't think of a better way.

[jimbo493]

if you had a swerve type drive you could link of a steering module in some way shape or form, but it would only work in certain turning situations, and is pretty complicated. The best way is probably to just use a gryo, it sound complicated, but is way simpler than a mechanical system, which in itself is not very feasible