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GM Module Ignition. #483455 03/28/13 9:11 pm
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tomterrific Offline OP
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I'm curious if anyone has used the ubiqutious GM module wired to the points to get a transistor controlled ignition? It seems like a simple resistor should do it, then the positive ground points would trigger the module(s) to fire the coil. The module(s) would need to be isolated from the frame. The benefit would be using a lower resistance coil for a powerful spark and less points wear.

Tom

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Re: GM Module Ignition. [Re: tomterrific] #483521 03/29/13 6:56 am
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Stuart Offline
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Hi Tom,

Originally Posted by tomterrific
The benefit would be using a lower resistance coil for a powerful spark and less points wear.

"Lower resistance" means increased current draw. Given that any standard Lucas coil is more than powerful enough at least up to 9.5:1 compression (not tried 'em with higher), where's the "benefit" there? confused

I can see that "less points wear" would be a benefit but, given how many times the 'quality' of today's points has been discussed one here, ...?

Regards,

Re: GM Module Ignition. [Re: tomterrific] #483532 03/29/13 9:56 am
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triton thrasher Online Content
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The best result you could possibly get is the bike running as well as it does without a GM module.


Amateur Loctite enthusiast.
Re: GM Module Ignition. [Re: triton thrasher] #483534 03/29/13 10:16 am
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Less wear on the points contacts since they only trigger the current switching module.
There's wire diagram floating around on the internet for use on a Japanese bike....

In the early 70's it was popular to replace the coils on bikes with larger car coils.The "improvement" was outlined in an article in Cycle magazine. I did it on my 650 Triumph,my friend on his 850 Norton.We convinced ourselves it was an improvement grin


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Re: GM Module Ignition. [Re: tomterrific] #483538 03/29/13 10:37 am
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AngloBike Offline
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If you're going that far why not just go EI?

What you're talking about sounds like the electronic boost that is used on distributor based bikes where the points switch a booster box and the coils.


Moderated by  John Healy 

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