Dear All

I have access to a borrowed 4.4kva Advanced Power Honda powered generator. Commutator sparking on my 450w drill on mains power is minimal at low revs and just evident at full revs. When powered by generator, this drill has minimal sparking at low revs but full "wrap around" sparking at high revs, When hit high revs, motor loses revs/labours.

Motor also putting out only 200v on my multimeter. Drops to 190v on start up and recovers to 200v once drill running.

Thoughts?

David