An ohmmeter connected to both the yellow wires on my single phase generator (1995 916SP) shows full continuity between the two windings. No resistance whatsoever. Had initially assumed that the problem was down to burned insulation on the yellow wires but it's the stator. Each yellow wire to earth onto the bike shows open circuit so that's ok. The only "branded" stators I can find are "Rick's", which aren't cheap but seem to be well liked, and Ducati OEM (££££££££!). Pretty much all the others seem to be cheap Chinese knock-offs. Are there any particular recommendations for brands of stator and where I might get one? It's obviously a permanent magnet rotor on these bikes. Are these pretty robust or should they ideally be changed at the same time as the stator? I realise I need to check the torque on the centre retaining nut. I had an (aftermarket) permanent magnet rotor on a BMW which suffered weakening magnets after around 10 years. Went back to the standard brush arrangement on that one. I'm new to Ducatis so any advice provided will be much appreciated. Many thanks.
The stator winding has a very low resistance, less than 1Ω, and a multimeter won't give an accurate reading. It will only show zero or very nearly so. Before condemning the stator connect your meter across the 2 wires and start up the bike. you should see about 14V - 16V per 1000rpm. So at 2,000 rpm you should see about 30V. If you don't the stator is knackered.
Electrex or maybe Wemoto for aftermarket generator spares, and i'm sure there are other aftermarket sources. Components rarely made in the UK now of course, but at least both are UK based and have a reputation to think of, should a problem arise. https://www.electrexworld.co.uk/acatalog/G92.html
Yes thanks, will do. Had realised that it'd be pre-rectifier. Battery on charge at the moment, I'll give it a try tomorrow.
Yes, rewinding is an option. A place fairly close to here had a good reputation at one time but I believe there has been a few issues recently.
