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Back to points

PostPosted: Sat Sep 11, 2021 1:10 pm
by friedy
So this morning MOT booked. Fired her up started first time :D , out if the garage, jumped out to put couple things back in garage, she was idling ok...then cut out. Couldn't restart not even firing :( so started usual checks, fuel yes, plug out..no spark. So swapped coil, no change, well I had a electronic module in the dizzy so swap that out for the spare points always carry. Carb off, module out, new points didn't fit the pivot post on base plate :roll: had to drill out points. Good job I was still outside the house. Anyway all back together and started on 2nd turn. :D Runs well so think I will stay on points. Only thing I've noticed now is getting more popping back through carbs. If you carry spare points check out the pivot hole need to get a 4.9mm drill through or won't fit.

Re: Back to points

PostPosted: Sat Sep 11, 2021 2:28 pm
by HCA
Frustrating, but well done in your persistence to get it going!

You make a great advertisement for an EDIS.

Re: Back to points

PostPosted: Sat Sep 11, 2021 2:40 pm
by USA64
HCA wrote:Frustrating, but well done in your persistence to get it going!

You make a great advertisement for an EDIS.


What is EDIS (search turned up empty).

Re: Back to points

PostPosted: Sat Sep 11, 2021 4:25 pm
by HCA
Ah. Electronic Distributerless Ignition System. aka Electronic Direct Ignition system.

Basically could be loosely akin to a magnito - a sensor on the crankshaft sends a signal to a coil to fire its spark plug at the correct moment.

If you want the detail, this youtube describes it quite well:
https://www.youtube.com/watch?v=wiejJ1HfS3M

It is easy to fit an EDIS to the Twincam. Forget the need for a cam sensor though. Not needed.