scorpion: DD motors may shed heat better, but on hills they tend to make more heat. Just going off a 'touch the cover' test, given the same situation / hill / speed, my MXUS/9C motor is often smoking hot and feeling boggy, whereas the MAC is just getting warm and not feeling boggy at all.
In a very small wheel, DDs do great, but they generally suck in larger wheels, when it comes to hill climbing and torque.
You've been spoiled by the magic pie. I hope you get a chance to test a 9C/MXUS diameter motor in a 26" wheel, and find out how cruddy it is
I'm running my MAC at 42A/57v nominal lately. That's 2500-2600w. I am surprised that i am not getting it hot. The 12FET controller is the only thing getting hot - the MAC is a controller torture device for sure.. lol.