Obviously I'm not Jon, but his observation on field current if armature was actually at 68 volts when clips turned red is a good one. I have worked with many generators and even open circuited, have not seen 68 volts. 20 to close to 30 occasionally. So my next recommendation would be to get a decent analog voltmeter, rather than chase ghost with perhaps bogus voltage readings. A reasonable fields test would be to connect a 12v battery with series ammeter between ARM and Field terminals of generator (not running) and measure the field current. Gen housing floating (not grounded). Most will not even see the 4 amperes that I mentioned earlier, perhaps half or less.
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Today's Featured Article - An AC Model M Crawler - by Anthony West. Neil Atkins is a man in his late thirties, a mild and patient character who talks fondly of his farming heritage. He farms around a hundred and fifty acres of arable land, in a village called Southam, located just outside Leamington Spa in Warwickshire. The soil is a rich dark brown and is well looked after. unlike some areas in the midlands it is also fairly flat, broken only by hedgerows and the occasional valley and brook. A copse of wildbreaking silver birch and oak trees surround the top si
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