im gonna have to agree with everyone on here....
i wind some of our motors and it has taken more than a few years to get everything just right, gotta have the right wire, which is very epensive and very hard to find, plus its a ton of money and they wont sell a little....
second the soldering is tough, we have a welder which works great, and we have solder, the solder is tricky....there is only a couple that work and not alot of companys will give out that info
third the epoxy is KEY, ours is about 300 a gallon, and next to impossible to find, THEN on top of that you gotta bake just right for the right amount of time
couple years ago when when the voltage or batteries was lower the rpms of the motor wasnt as high as it is now....you could get away with it..
forgot bout balancing....thats a whole other story alltogether....if its not perfect it WILL self destruct......balancer is the most expensive thing in our shop
an the most important