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This might interest some owners of big twins [crank ignition/generator]
Posted: Tue Dec 20, 2016 8:50 am
by Bullet Whisperer
I recently fitted a crankshaft driven electronic ignition and generator to a MK1 Interceptor engine I rebuilt, which was fitted with a belt primary drive. Here are some observations of some alterations I had to make to get it all to fit ...
https://www.youtube.com/watch?v=LOKCEec4bcI
This might interest some owners of big twins [crank ignition/generator]
Posted: Tue Dec 20, 2016 10:12 am
by papasmurf
This might interest some owners of big twins [crank ignition/generator]
Posted: Tue Dec 20, 2016 1:30 pm
by Bullet Whisperer
Thanks for the above, papasmurf! Regards, Paul.
This might interest some owners of big twins [crank ignition/generator]
Posted: Tue Dec 20, 2016 2:13 pm
by Mark M
Very interesting. Thanks Paul, I have looked at that system and wondered about the fit. I note that engine has a Series 2 primary cover, would the Owner be interested in swapping for a S1 type? I could really do with getting the right one for my S2!
REgards, Mark
This might interest some owners of big twins [crank ignition/generator]
Posted: Tue Dec 20, 2016 6:24 pm
by Bullet Whisperer
Hi Mark, the primary cover has been modified with the addition of an extra inspection plug, if that's what caught your attention? I will mention you expressed an interest next time I speak to the owner, if you like. Regards, Paul.
This might interest some owners of big twins [crank ignition/generator]
Posted: Tue Dec 20, 2016 6:48 pm
by Mark M
Thanks Paul, you have my email. Maurice, the ex-Factory guy, said early cases were hand made before they got around to having the casting modified. Only the S2s had them so you could see the rotor timing marks.
REgards, Mark
This might interest some owners of big twins [crank ignition/generator]
Posted: Wed Dec 21, 2016 1:15 am
by Count Johnny
Nice work.
This might interest some owners of big twins [crank ignition/generator]
Posted: Wed Dec 21, 2016 6:25 am
by Barnes
I fitted one of these to a mates bike as part of another adaption. In my experiance the ignition curve is not properly suited to the enfield twins. The electrex system reaches full advance at around 4500-5000 rpm. Meaning that on our twins it is never properly advanced. I set ours as it said in the book but the bike developed no power. I had to advance the timing by a fair few degrees at stationary to get her to even think about running properly. But it means that she is prone to kick back when starting. Also found that you need to change bulbs to led style as it doesnt provide a decent charge for extended night running. Ed
This might interest some owners of big twins [crank ignition/generator]
Posted: Wed Dec 21, 2016 5:04 pm
by Adrian
Electrex World also offer a version for classic Bullets and other alternator singles.
This might interest some owners of big twins [crank ignition/generator]
Posted: Thu Dec 22, 2016 9:24 pm
by andy berry
The units are designed for Norton Commandos,they need abit of work to fit. ie new mounts and spacers etcbut will fit in the standard 56 onwards twin cases they supply both self powered ignition and alternator. and work very well giving good starting and good charging output. I ve fited these on quite a twins from early super meteors to mk 1a interceptors ive also run them on bullets of various sizes and work well on them to. andy