- Nov 27, 2012
You may need to switch back to a 40 on the NuVinci. I can't seem to find my paperwork, but I believe it contains info for minimum ring to cog requirements. I used the Ebike numbers. I'm pretty sure it was 40 to 18. I think you can go as low as 33 to 18 if just using leg power, but it's too stressful on the hub with a engine. You won't need to go that small cause you will soon see it is plenty quick enough with the 40 18.Thanks Gary on the Rambler I have engine 10
Inside was 40 just switched to 36 and improved low end torque
Rear wheel 28-14 shimano 5 speed freewheel.
I'm using KMC HL710 from engine to shaft and shaft to outer ring and KMC X8.93 from inner ring to rear wheel. I had to file the engine sprocket and j shaft sprockets for the chain to fit but it didnt take very much.