well ive not measured it, sorry I meant it drives the spindle at around 4000RPM or so i was told, perhaps you can shed some light on it.

I can't tighten my belt much as im struggling to get the thing aligned enough so it does not make a load of noise when tightened.

do you know of any decent motor upgrades? I may have to upgrade to a Kress, but as I bought the ER-16 spindle I would rather stick to the belt driven system with a faster motor.

DJH