Originally Posted by
miquelmah
Are you in the EU? If so, that motor is street legal as far as voltage, not sure if the speed would fall within street-legal limits (the EU and certain Asian countries have fairly strict limits on power and maximum speed for street-legal e-bikes). I'm not sure of the quality of this hub motor. Often with Chinese-made hub motors you'll find that such small gauge wire has been used for windings that they aren't very robust. If you don't need a lot of torque for hills this may be fine. I'm not sure if you'll have any problems with motor burn out at 48V if the wiring is very low gauge. As for LIFEPO4 batteries, I would be more cautious and buy from a reputable builder like Ping.
If you can, you might shop for a motor from a local distributor. That way you might actually get warranty support. I'm not sure how quickly you could burn out this motor, especially if you ride steep hills. Good luck.