so the A engine gets either an A or a B cylinder (taperd fins)
the D engine gets a D cylinder (boxy)
the main difference is stroke length
am i correct?
are there different pistons?
what does C mean?
are the clutches/internal gears the same?
is the 'a' what is called a 25 mph cylinder
the 'b' called a 20 mph cylinder
'd' the 30 mph cylinder? i've seen the stickers on the bikes, and wondered if thats what people are referring to.
what cylinders/pistons came with PI gaps and which ones had FG gaps?
if people answer all this shit i'll type it up and wiki it, this is the kinda stuff i take for granted knowing about puchs... other brands i have a lot to learn about.