Quote:
Originally Posted by cjl2625
Well, I guess you could put a gyro on the cylindrical component, and assuming the cylindrical thing is on a motor, have it on a closed-loop system to keep it facing at a constant angle.
But maybe that's not what you're looking for if you want something purely mechanical.
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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.