Originally Posted by
Winfried
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?
Got no idea about an official primary drive ratio limit. I've ridden my XRK8W for five years with a 25T cog driven by Sturmey's matching FCS80, 30T crankset.