Hi folks- I thought Id add to this thread rather than start another.
Thanks to Eds heads up back in September (cheers Ed!), Ive acquired a pair of those RS pancake motors that were being sold on ebay. Rather than reinvent the wheel (or the disc), what would experienced spinner builders suggest is a sensible size of pulley and belt, and a sensible gearing ratio for this motor (24v, 75W, 3,600rpm, 19.7Ncm torque)? Itll be spinning one of those nice 10 Hardox discs of Christians. Also, what profile of belt do most folk use? Im assuming a V belt, but I have seen feathers using round section belts too.