Forum

[Flick5848]

My old Redditch 350 is currently running points and I have considered converting to electronic ignition. Nobody seems to want to provide a 6V system for a bike that runs an alternator & distributor. I have spoken with Boyer and they advised the problem is that if the battery disconects the alternator can put circa 200v through the electrics. If I convert the bike to 12V they will provide a system and offer a warranty. I don't really understand why having a 12v battery and coil will eliminate the problem of 200v volts going through the electronics. Its the same alternator !!!! I don't want to convert to 12V so perhaps somebody could explain

[ric]

Ohm's Law. Wattage = Amps x Voltage
The resistance of the Boyer remains constant, but when the Voltage is doubled the Amperage gets halved (less amps = less damage). Probably misremembered something I learnt almost 50yrs ago incorrectly so I wait to be corrected...

[Alan R]

That's spot-on RIC----same thinking for having a 12v wiring system rather than a 6v one ---- or 25Kv for railway overhead power transmission-- 400,000v National Grid etc.. upping the Voltage reduces the Amperage...

[Tim NZ]

The easy way is to convert to 12v, (Same stator and rotor) only bulbs battery and coil need to change, and fit a zenner diode. Simple


BUT you will still face possible issues with a flogged out points drive assembly...


Why you want to fit a EI is beyond me, why not convert to Diesel and do away with a electrical based ignition system altogether?

[Bullet Whisperer]

I would leave it alone, with 6 volts and points, it got this far with them.

[Adrian]

Boyer might not want to sell you a 6V electronic ignition but if you insist on a 6V kit Pazon will sell you one, you will find some here if you look down the page a bit.



http://www.pazon.com/ignition/sure-fire-ignitions/



Pazon was founded by ex-Boyer staff and relocated to New Zealand, but their kits are still available over here. Suggest you drop them an e-mail.



My ignition upgrade for a later Redditch coil ignition Bullet would be to retrofit a Lucas SR1 magneto if I could find an advance/retard unit for it. One sold on ebay for £78 the other day...



A.

[Alan R]

Sage words BW---sage words !!

[Balf]

http://www.velleman.eu/products/view/?c ... en&id=8946
If you are handy with a soldering iron.

Peter