Main Motorcycle: T140V Bonny '77
Join Date: Aug 2010
Location: Takasaki, Gunma, Japan
Other Motorcycle: T120R '71
The engine in your Triumph is a '4 cycle engine" The spark occurs every other revolution of the crankshaft.
The pistons rise and fall together, but they are on different cycles. The four cycles being suck, squeeze, bang, blow.
So as you state you have condensers on your bike and I presume are still using the points ignition, the spark will not occur at the same time.
Englishman in Japan