I found an 5/8” bore 8t 415 sprocket for the jackshaft however 56t was as large as I could go before the chain rubs the frame stay so I’m currently in the process of swapping my final drive to #35 which should allow fitting sprockets up to 75t.I'm going to try a 10-46 with a 7" driven on 25" wheels with a modified 79cc that will rev 6000+... So it would do 80mph if it can push the gear? If I went with a 9or10 -56 probably be more realistic ...they make a 42 46 48 and a 56 that I can find for the pugeot 103 hub... I can use the sprockets for 2 stroke builds... Froala
I haven't gotten anything from France in a while... Thank you for this information
What I really need now is a 6 hole IS (44mm BCD) adapter to standard 6 hole 5.250" split sprocket pattern, if anyone knows of such a thing. This way I can utilize my arsenal of #35 sprockets leftover from Kart racing to find a sweet spot and utilize the full range of primary ratios my CVT offers, 3.13:1 to 1.12:1.
Funny you should mention the P103 moped hub because in my search for a split sprocket adapter I ran across where Sportscar Pat made a split sprocket adapter to fit his moped hub.