I have been wondering this question ever since I got my electric scooter (Volta 401) and I plan to upgrade it’s motor to 3000w from the original 1500w version. And since the wheel had the same configuration on the front and back I don’t see the reason to put another motor in the back and put the old one in the front. I put my ideas based on dual motor configuration for e bike where each motor have it’s own controller and connected on 1 throttle. Is there a reason why this might not work?
Price.
They make controllers designed for dual motors that would work better. Sometimes two controllers play well together but not always.
2 different motors without a self learning dual motor controller complicates things. You’d be better off with 2 identical motors if you go the 2 controller route.