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Keep in mind that the third brush style gennies are more of a b-circuit deal.. whereas our 2 brush gennies are a-circuit. A-circuit gennies have an internally hot field, and the a-circuit regulator provides ground for the field. On a b-circuit genny.. the field is internally grounded, and the 3rd brush provides field power.. or in your case.. the b-circuit regulator provides field power. If you have a test lite.. check out your field wireing.. even a visual inspection will probably tell you. If your field is grounded, then it needs power. Therefore grounding the filed terminal would have no effect whatsoever... ( though it would have on an a-circuit genny.. ). Take your vom and measure the armature at hi idle.. it may be the cutout is stuck... also.. remove the field wire from the genny, and measure it to ground ( you are measuring the field tab on the reg ).. you should have power there. Have you tried repolarizing?
About a week ago, I posted about a project using an old 3rd brush genny, removing the brush and wireing the genny up to a naa or hundred series regulator. Jim Cox posted in with some good advice and info.
Soundguy
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