Thanks Andy, though the setup on the synchro is different than ours, the principle is the same. It gives me confidence to sort ours out. I suspect the thrust bearing seized on ours in the past sometime and that some there was some collateral damage too. I'll send pictures on Monday if I remember to ...

Andy, that was quick! Thanks for your response. Ours is a manual version, and I don't think the problem is the belt, as there's no sound of slippage and no rubber dust in the cabinet. If I could see the area around the thrust bearing on the end of the variable pulley, I think I could figure out what...

Hello all, I'm hoping someone here may be able to help. We have a 280Vs lathe which has become slower over time. On investigation of the variable speed mechanism, I get the impression it has been 'got at' in some way. Without any useful drawings, it's difficult to figure out what the problem is. Doe...