12 volt hub dynamos
09-23-04 | 10:14 PM
#1
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12 volt hub dynamos
does anybody make a 12 volt hub dynamo? i read somewhere that there was to be a 12 volt version of the schmidt unit, but heard no more about that in a while. also, does anybody use the b&m s12 bottle dynamo? any comments about it's brightness? drag? just curious. p.s. i know you can get 12 volts from a 6 volt model by wiring 2 lamps in series & pedaling your but off, but i'm referring to an actual 12 volt version....
09-25-04 | 07:40 PM
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Well, since I'm partly responsible for this thread getting waaay off topic, I'll try to get it back. I know of only one 12 volt generator, the B-M Dymotec 12. See https://www.peterwhitecycles.com/dymotec.asp. It's rather pricey, though.
09-25-04 | 10:39 PM
#6
A quote from the link:
"People frequently ask if their 6 volt dymotecs and 6 volt lights can be upgraded to the 12 volt specifications. Unfortunately, this is not possible. Electronic overvoltage protection in all of the 6 volt lights will fail if powered by 12 volts"
Well, duhhh.
Is he that dumb, or does he think we are? Let's make a leap of faith and suppose that a person knows enough to change the bulbs to 12V before running 12 volts to them. What people are asking is what is the internal difference between a 6V and 12V dynamo, and can the 12V components be retrofitted?
Beyond that, I'm mystified as to why a 12V dynamo should cost twice as much as a 6V (don't tell me they charge by the volt...); the cost of materials couldn't be very much different, and I don't think amortizing over a smaller production run quite covers it either.
"People frequently ask if their 6 volt dymotecs and 6 volt lights can be upgraded to the 12 volt specifications. Unfortunately, this is not possible. Electronic overvoltage protection in all of the 6 volt lights will fail if powered by 12 volts"
Well, duhhh.
Is he that dumb, or does he think we are? Let's make a leap of faith and suppose that a person knows enough to change the bulbs to 12V before running 12 volts to them. What people are asking is what is the internal difference between a 6V and 12V dynamo, and can the 12V components be retrofitted?
Beyond that, I'm mystified as to why a 12V dynamo should cost twice as much as a 6V (don't tell me they charge by the volt...); the cost of materials couldn't be very much different, and I don't think amortizing over a smaller production run quite covers it either.
09-26-04 | 01:55 PM
#7
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Just noticed the subject of this thread. 12V HUB Dynamos. What I referred to above is a bottle (or sidewall) generator. Duh. But it costs more than the 6V hub dynamos. Does that count?
09-28-04 | 12:35 PM
#8
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Originally Posted by bemoore
Just noticed the subject of this thread. 12V HUB Dynamos. What I referred to above is a bottle (or sidewall) generator. Duh. But it costs more than the 6V hub dynamos. Does that count?
The Schmidt web site makes mention of a theoretical 12 volt version of the SON. I do not know if Schmidt will ever produce a 12 volt version of the SON. As far as I know, the folks at Schmidt have not decided whether or not to produce a 12 volt SON. (i got this off peter white cycles' site. i was wondering if anyone has anymore info regarding this hub)
