No advantage to more watt potential if you never use it. The controller needs the ability to use a torque sensor, you can’t just randomly add one. Some fully enclosed torque sensors are pretty robust. Some are just an open disc and sensor. Put 1,700 miles on an open style on one bike, never touched it. Have the same one with 1,300 miles on an ETrike, never touched it.
Rich, I have to disagree a little. I agree there's not going to be a LOT of difference, but thinking there will be some.
A motor rated for 1000w nominal as compared to a 750w nominal (without getting into the mechanical differences), is going to have a little more torque available. An example might be if you are motoring along with your 1000w motor while pulling 750w. say, and you're approaching a slight incline. The 1000w may be able to just motor right over that incline with no increase in power necessary, where the 750w, in order to stay up with the 1000w next to it, WILL have to add a little power.
That extra little bit of power added while riding the 750 is the difference between those motors with both pulling 750w, all else being equal. Obviously, the 1000w motor is able to produce more power for a longer amount of time than the 750w would as well (all else being equal).
Controllers CAN limit the amount of power to the motor too. In the case of the OP's question, where power to the motor is being limited to 750 watts (from the available 1000 watts), there is no noticeable difference UNTIL you compare the available difference in potential power available (torque) 750 watts vs. 1000 watts. If the motor has all the power you'd ever need while limited to 750 watts, all is fine and dandy.
There would likely be a difference in range (less) if the rider had the full 1000w available and was using it on occasion - to climb a hill or cross a busy street as quickly as possible for instance. THAT would be why I would remove the 750w limit. The switch on the blue wire might be a good plan....
