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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Urgent - Comet Lucas Dynamo doesn't appear to be charging
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<blockquote data-quote="greg brillus" data-source="post: 55078" data-attributes="member: 597"><p>From what I have seen of both Miller and Lucas generators, I guess their output in wattage could be much the same, and though the Lucas is a more common item, it is also not hard to fit to a Vincent with the D type drive components. Where the lucas is superior to the Miller is in the commutator/ brush surface area. The lucas has much bigger brushes giving more contact on the comutator. When we had a Lucas on the test rig and loaded it up, the arcing at the comm was noticeable, but not excessive. Same test on the Miller, and the comm/brushes looked like an arc welder......The point most forget when placing higher than normal loads on a generator, especially when the battery is near flat...is that as the genny try's to run at a high output, the comm segments and windings get very hot. Generally where the solder connections from each comm segment to the wires in the armature, melt and is thrown out centrifugally. Thereafter the genny becomes useless. I've found both units in good serviceable condition and NOT overloaded in use, will work fine for years......but the Lucas is able to handle higher loads than the Miller.....Hope this is of help.....Greg.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 55078, member: 597"] From what I have seen of both Miller and Lucas generators, I guess their output in wattage could be much the same, and though the Lucas is a more common item, it is also not hard to fit to a Vincent with the D type drive components. Where the lucas is superior to the Miller is in the commutator/ brush surface area. The lucas has much bigger brushes giving more contact on the comutator. When we had a Lucas on the test rig and loaded it up, the arcing at the comm was noticeable, but not excessive. Same test on the Miller, and the comm/brushes looked like an arc welder......The point most forget when placing higher than normal loads on a generator, especially when the battery is near flat...is that as the genny try's to run at a high output, the comm segments and windings get very hot. Generally where the solder connections from each comm segment to the wires in the armature, melt and is thrown out centrifugally. Thereafter the genny becomes useless. I've found both units in good serviceable condition and NOT overloaded in use, will work fine for years......but the Lucas is able to handle higher loads than the Miller.....Hope this is of help.....Greg. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Urgent - Comet Lucas Dynamo doesn't appear to be charging
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