Some 40 years ago, I wanted more speed out of my Motron (surprise it's a Motron, surprise I wanted more speed, right?) that originally came with 9:44 sprockets. First I bought an 11 for the front, so 11:44 and the bike, with no other enhancements, went 30 mph. Of course, I wanted faster, so I got a 36 for the rear. 40 mph on level ground but 10 to 15 up tough hills, so 11:36 ratio.
I'm getting the engine rebuilt this month after roughly 20 years since the last time it was ridden, and I'm thinking of going back to the 11:44 ratio, but I will need a longer chain, of course.
Or do i?
If I switch the front sprocket to a 9, a 9:36 will have the SAME RATIO as the 11:44, but my mechanic is saying that I will have an rpm issue at 9:36 that I won't have at 11:44.