Hi I'm looking at installing one of the e bike kits , first question is, assuming factory built pedelecs have a proportional assistance to pedal pressure, they must have some kind of torque sensor. I can see how these would be built into central (chain drive) kits but how are they done on front or rear hub kits, assuming they have them. I guess its technically possible to have a sensor in the rear hub motor but I can't see how it is sensed on a front motor.
2nd question, legallities aside, I see there are bigger than 250W motors available (750 etc) when used at low power (using mostly pedal power) are these less efficient than a smaller motor that is working harder?
Thanks all! Will.
2nd question, legallities aside, I see there are bigger than 250W motors available (750 etc) when used at low power (using mostly pedal power) are these less efficient than a smaller motor that is working harder?
Thanks all! Will.