Anyone have some directions for what is a good spark for a D2B RS172 Bosch magneto in an R12? Reason to ask is that starting is difficult because I can't kick hard enough - the new pistons have much more compression than the worn out old ones
At 50 revs/min at the magneto, the spark can bridge about 2mm, at 100 revs/min at the magneto spark can bridge 7-8mm in open air. Is that good enough?
PS bike runs fine at idle once it's started