Quote Originally Posted by Jeremy View Post
The current plan is to directly drive the spindle from the motor shaft, using a suitable coupling.
Hi Jeremy

What is a suitable coupling for 500 revs/second? :confused:

Balance probably isn't a prime consideration, but no bending parts obviously.

I'd probably go for a rod though one shaft engaging a pair of driving dogs on the other, then spend half an hour adjusting it 'till it ran quiet :D

best

Robin