Came across this on ebay Shimano Nexave ST-C530 three speed hub to take 8 speed cassette. Has anyone had any experience of this hub. If it is strong enough it might work very well with a crank drive motor.
I have this on my Birdy, I find it most pleasant to use.Riese & Muller use a Sram 3 speed with a 9 speed cassette on a few of their bikes. it's a far neater way to achieve 27 gears than using a three speed front mech. It works very well.
All the best, David