I removed the "lawn Mower carburettor" from my 27 and replaced it with a Kingston L-4 and I found I could hand crank on battery so I thought I would see if I could hand crank on magneto, it did crank then I realized that I did not have the spark lever fully retarded. OOPS! So I shut it down and this time I made sure that the spark lever was fully retarded, the car would not hand crank on magneto. I checked the timing and it seems right,the car will crank on magneto with the spark fully retarded using the starter but to hand crank on magneto I must advance the spark lever 4 or 5 notches. Am I doing something wrong or do some cars like a little advance?
GR, I have always advanced my timing 4 or 5 notches. I've never had a Model T kick back on the crank and when the car is properly tuned I've never had one that didn't start.
Do a topic search on spark advance. I think this has been discussed several times. When cranking on Mag. like Mike mentions you need a bit of advance to hit the proper place on the AC wave from the Mag.to hit. Sounds like you have her tuned well.
If it was running why did you shut it down?
If timed correct, 4 to 5 notches sounds about right.
If your timing is set to 15°ATDC when fully retarded, then a few notches of advance is needed when hand starting on mag power. That is normal.
I set my timing just after TDC and hand crank start on BAT and MAG with full retard. Works either way, your choice.
The owners manual says the spark lever should be set at the third or fourth notch when starting on mag.
Thanks all I had never been able to hand crank before so this is new territory and it is great to "show off" at cruise in's