we did offer PJ a solution even not knowing at the time he was a FRA member. Okay too late to help at that time but the gesture was appreciated.
Much appreciated! Didn't realise you were also a roboteer Paul.

How long before someone from HPC turns out to be a robot builder.....

As for my belt snapping I only did 4 spin up tests, only 1 was to full throttle, on all occasions the spin up was slow and rpm achieved was no more than what I reckon was about 4000 (given the reduction, Kv of the motor etc..) I should have thought my synchoflex belt would have been up to that.