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6V or 12V for J2
#152727 08/28/07 3:46 pm
Joined: Dec 2006
Posts: 255
Britbike forum member
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Britbike forum member
Joined: Dec 2006
Posts: 255
I am starting to put the electrics into my J2 but I haven't bought a battery or a voltage regulator yet. From what I have read I could stick with the original 6V system or go to a 12V. From what I have read, the dyno will put out in excess of 12V but at a higher RPM so I can just put in a 12V regulator and it would charge up a 12V battery...is that true?

Will 12V bulbs fit in the light sockets?

I am leaning toward the 12V system because it seems like I would have a wider selection of batteries, bulbs (including LED), and modern solid state vultage regulators from Jap bikes.

Comments? Thoughts?

Thanks

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Re: 6V or 12V for J2
#152728 08/28/07 3:59 pm
Joined: Aug 2001
Posts: 3,344
In Remembrance
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In Remembrance
Joined: Aug 2001
Posts: 3,344
I have been over this same question with a BSA . From all the onfo I have gathered , there seems to be field coils that will retrfit the E3L dynamo as well as an armature , to accomodate 12V electrics . This also seems to put out less current , from what I am deciphering , and needs more RPM?? I dont know if your bike has an E3L or not, but after all i have read , I am confident that 6 V system , with a healthy dynamo , will do the job just fine. As far as uprated electrics , my bike is fitted with a Lucas mag so the dyno is only responsible for lighting, I am counting on the stock headlamp and I have a couple of the pos ground led tail lamps from bulbs that last forever , these should save some current draw and be a bit brighter ?? I am also contemplating using a solid state rectifier that is offered for the older H-D machines , I havent ooked into them yet , but they sound like they will save on some trons and be smaller, more reliable in the bargain .

This is all based on theory and conjecture , I have seen all of this work on various bikes , with the exception of the regulator I mentioned , so I have some confidence with it.

FWIW-BONZO


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