1936 BSA B2.
My bike is at the menders sorting out a few niggles over the winter. It's nearly done, I believe, but there appears to be an issue with the magneto. It produces a good spark off the bike, but no spark when it's fitted back on.
Does anyone have an idea why this might be?
Two things come to mind:-
Have you got a good earth between the mag and frame.
But most probably, the kick over speed is a lot slower than the testing speed on the bench. A failing mag will only produce a weak or no spark at very slow speed.
Ron
Obviously the information was not required! Ron
Apologies, don't get online much and forgot I posted here. Thanks for the suggestions.