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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Battery Charging Help!
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<blockquote data-quote="Chris. S" data-source="post: 173064" data-attributes="member: 4018"><p>One of the failure modes of the CV1 regulator is for the lower contact, as shown on Lone Stars circuit diagram, to weld permanently closed. This results in no output from the dynamo, because the Field Coil is shorted to ground.</p><p> In order to test the dynamo, it is best to disconnect the regulator, and connect the two wires together. This will short out the dynamos internal resistor. Then connect a volt meter between the body of the dynamo and the junction of the two wires. Start the engine. The voltage should rise with engine revs. Be careful not to rev too high. Keep the voltage to a safe level for the old insulation. No more than nine volts is enough to prove that the dynamo is capable of charging the battery.</p></blockquote><p></p>
[QUOTE="Chris. S, post: 173064, member: 4018"] One of the failure modes of the CV1 regulator is for the lower contact, as shown on Lone Stars circuit diagram, to weld permanently closed. This results in no output from the dynamo, because the Field Coil is shorted to ground. In order to test the dynamo, it is best to disconnect the regulator, and connect the two wires together. This will short out the dynamos internal resistor. Then connect a volt meter between the body of the dynamo and the junction of the two wires. Start the engine. The voltage should rise with engine revs. Be careful not to rev too high. Keep the voltage to a safe level for the old insulation. No more than nine volts is enough to prove that the dynamo is capable of charging the battery. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Battery Charging Help!
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