E: Engine Comet elect coil ignition make and timing?

[tom wilson]

Hi I have a newly acquired Comet that is fitted with this mix of coil ignition/ electronic bits, any idea who's make it is and how to set the ignition timing? as it runs fine but kicks back on starting,

 

[vibrac]

looks like a thorspark or similar pickup using a mag body as a platform I have heard good and bad things about that system. whatever using 38deg BTDC fully advanced as per many books, is inappropriate nowadays, look more towards 34 deg. Also it's probably a good idea to look at your ATD (assuming you have one) pop a few search phrases in the search box above and you could be reading till the new year.

 

[tom wilson]

Hi Vibrac thanks for the

looks like a thorspark or similar pickup using a mag body as a platform I have heard good and bad things about that system. whatever using 38deg BTDC fully advanced as per many books, is inappropriate nowadays, look more towards 34 deg. Also it's probably a good idea to look at your ATD (assuming you have one) pop a few search phrases in the search box above and you could be reading till the new year.

Hi Vibrac thanks for the info, I am really looking to find where to find the spark set point (generated) is on the electronic bit (what bits need to be lined up)? I can see several black paint/marker lines have been put on there by someone, cheers

 

[vibrac]

i think you must use a strobe light but I have never tried it perhaps someone else on here has

 

[tom wilson]

i think you must use a strobe light but I have never tried it perhaps someone else on here has

Hi again Vibrac it looks like you were correct it is a Thorspark system, I have been on their site, also looked at a few comments, it does seem that it has to be timed with a strobe light. I shall have a play in the next day or so, I think static timing is a little easier with a Comet but strobe can be a lot more accurate. thanks again

 

[bmetcalf]

@clevtrev sometimes has a timing disc and spindle available that oils the crank like the feed quill does. I don’t see it on the SparesCo website.

 

[tom wilson]

@clevtrev sometimes has a timing disc and spindle available that oils the crank like the feed quill does. I don’t see it on the SparesCo website.

Hi Trev I have a timing disc that I use for static timing, but would not be any good with the engine running. The one you suggest would be brilliant if only I could find one. many thanks

 

[Normski]

I’ve no idea if this applies to Thorspark but some electronic ignitions revert to full advance even at kickstarting speeds if battery voltage is low. This could cause your kickback?

 

[Bill Thomas]

I have used a car strobe , " Snap on ",
Directly pointing on the points,
If you use very fine / Narrow, Marks, Gives you an idea of what is going on .

 

[Chris Launders]

Would this work ? Time the engine with a disc, take a good picture of the ignition unit in this position.
Then run the engine with a strobe and compare that with the picture.
If the timing is right they should match at fully advanced.


Have I just invented a way to check any electronic ignition ???