Thanks focalist. I have such a rig for rotation and displaying the rotation speed with POV. Hope to enter AAPT equipment contest! My video cam is not good enough to get a decent video but yes it works. My stage won't go faster than 10RMP. I woud say 1000RPM requires a lot of power to balance frictional loss and I can only hope a 1/4 HP vacuum pump motor can do it with a gearbox.
I'm not sure if my students are willing to write programs to get POV but I'm definitely showing mine to them at the very start.