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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Make your own Generator
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<blockquote data-quote="oexing" data-source="post: 108339" data-attributes="member: 1493"><p>Thanks for pointing me to Hegeler´s pages, didn´t know the mod for driving a generator from the mag position. As suspected, you´d need some gearing to arrive at speeds for getting some wattage there. Only speaking for myself, I would never want to have another gear set to care for just for a generator. That was my incentive to ignore the then geared Alton and look elsewhere - to the brushless China motors. Just last night I had a look at some Kawa starter motor, the planetary gears appear almost identic to the Hegeler generator - just for the alternative effect - to get a gear reduction for max torque.</p><p> I´d be interested to see how the Hegeler starter was designed at the old dynamo position. Could not find anything at his web pages. </p><p> Eddy, you named the apparatus that controls the voltage in a generator system: The regulator ! So for that purpose you will get an electronic converter for 13.8 V and any power from a 24 or 48 V brushless will be limited to just these 13.8 V. There is no need for self-limiting properties in the alternator as the converter will take care for this. There is no basic difference to the old 6 V Miller or Lucas dynamos: Just wire one end of the field coils to the positive brush, no regulator connected, and you will get not only 6 V but way above 10 V when you rev it , only limited in voltage by the mechanical robustness of the armature for excessive speeds. </p><p> Self-limiting alternators and their systems are found in your pushbike dynamo, a AC permanent magnet alternator, no proper voltage limiter anywhere but limited by, well, self-limiting property. Same goes with most non-battery moped or scooter alternators, all bulbs are run on AC current at around 6 V. </p><p></p><p> Vic</p></blockquote><p></p>
[QUOTE="oexing, post: 108339, member: 1493"] Thanks for pointing me to Hegeler´s pages, didn´t know the mod for driving a generator from the mag position. As suspected, you´d need some gearing to arrive at speeds for getting some wattage there. Only speaking for myself, I would never want to have another gear set to care for just for a generator. That was my incentive to ignore the then geared Alton and look elsewhere - to the brushless China motors. Just last night I had a look at some Kawa starter motor, the planetary gears appear almost identic to the Hegeler generator - just for the alternative effect - to get a gear reduction for max torque. I´d be interested to see how the Hegeler starter was designed at the old dynamo position. Could not find anything at his web pages. Eddy, you named the apparatus that controls the voltage in a generator system: The regulator ! So for that purpose you will get an electronic converter for 13.8 V and any power from a 24 or 48 V brushless will be limited to just these 13.8 V. There is no need for self-limiting properties in the alternator as the converter will take care for this. There is no basic difference to the old 6 V Miller or Lucas dynamos: Just wire one end of the field coils to the positive brush, no regulator connected, and you will get not only 6 V but way above 10 V when you rev it , only limited in voltage by the mechanical robustness of the armature for excessive speeds. Self-limiting alternators and their systems are found in your pushbike dynamo, a AC permanent magnet alternator, no proper voltage limiter anywhere but limited by, well, self-limiting property. Same goes with most non-battery moped or scooter alternators, all bulbs are run on AC current at around 6 V. Vic [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Make your own Generator
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