im on the quest myself and it's been a long time coming but I should be finally trying it on Monday when I get bearings that it'll need. Ill write up how it goes then. Been holding off my talk for real action first. It's more so with the motor can butted up against the wheel instead of in the wheel. I'd read that being in the wheel would subject it to possibly too much vibration but who knows...not much to loosen up or vibrate anyway.
I used the end of the truck axle as both the wheel support, which it normally does, and to hold a floating axle for the motor shaft...simply a tube with bearings bolted to the can that holds it in place. the metal piece i made also has prongs for an abec11 so no mounting bolts are needed other than the final nylon bolt which I dig. I started this because after getting enough pulleys and motors for 3 boards I was having trouble getting a motor mount made or even bought and decided this would simplify things. still dont have a traditional motor mount since every time I can get on the cad cnc machine it fails ever since I got this piece done so...I'm going this way. it's just soft aluminum but if it goes I'll get some cast in steel.
I didnt rewind a motor and am hoping it can be just reterminated Y instead of having to totally rewind but cant find out. If you know? I'll be using a 210kv just to see if it works so no hills. I found that a 50mm motor (scorpion something) can be wound all the way down to just over 40kv so I'll probably go with two of those. Seems with the low kv you need to have more material since the windings are so thin and will be less able to take the heat generated by the amps....and the amps are what you'll need to get the torque. low kv motors dont have more torque but more torque per amp