General Cycling Discussion - 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....

Oh, don't be so helpless -- fabricate one of your own! :eek:

http://home.comcast.net/~mswantak/wsb/media/1477/site1309.jpg

Wow. 13.8 volts and 100 amps! Take that you generator critics!. Um, how is the drag?

Um, how is the drag?

Not so bad, once you get used to the high heels and eye make-up. :rolleyes:

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 http://www.peterwhitecycles.com/dymotec.asp. It's rather pricey, though.

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.

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?

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?
i was inquiring about this: 12 Volt SON

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)