Electrical Issue

[Major Softie]

I'm sure a 'Megger' ( Insulation tester ) would expose a dodgy rotor.The high voltage should do the trick.
Find a mate who has one or get local auto lecky to do it, and test across the slip rings. A good rotor will show as a short.
Can also test each slip ring to the shaft ( should be infinite resistance ) Make sure you test BOTH slip rings....

Don't be so sure. Veg had a brand new rotor that would only fail while spinning and always tested good when not turning. Unfortunately, the only way to really test for that kind of failure is by replacement with a known good part.

[sterob]

I'm sure a 'Megger' ( Insulation tester ) would expose a dodgy rotor.The high voltage should do the trick.
Find a mate who has one or get local auto lecky to do it, and test across the slip rings. A good rotor will show as a short.
Can also test each slip ring to the shaft ( should be infinite resistance ) Make sure you test BOTH slip rings....

Don't be so sure. Veg had a brand new rotor that would only fail while spinning and always tested good when not turning. Unfortunately, the only way to really test for that kind of failure is by replacement with a known good part.

Hmmmm...ok. I stand corrected. Thanks Major.