The
X-RF8(W) accepts a "20 to 23 or 25 teeth sprocket". According to the
Sheldon Brown page, combined with a 44T chainring and a 20T sprocket, I'd get a development of 2.4 - 7.7m.
I read somewhere about IGHs that they impose a limit on the chainring/sprocket ratio because of the torque: Does someone know what the limit is for that IGH, so I know which chainring/sproket to get?
And what about replacing the chainring with a double, eg. 50/34?
Thank you.