Topbikekit's own site quotes the different ratios in the motor spec. It was also on the original label on the motor.
Forgot to say that the motor is around the same diameter as my biggest cassette ring (32t) and smaller than the 180mm disc. It's also smaller than the Ezee I've been using for years. It will not attract 'oversize' attention.
The challenge I have now is that nothing for standard bike fits. Things that make life comfortable like water bottle holder, sunglasses and gloves stowage, panniers et al.
Forgot to say that the motor is around the same diameter as my biggest cassette ring (32t) and smaller than the 180mm disc. It's also smaller than the Ezee I've been using for years. It will not attract 'oversize' attention.
The challenge I have now is that nothing for standard bike fits. Things that make life comfortable like water bottle holder, sunglasses and gloves stowage, panniers et al.