I have a Sun EZ Sport that was converted into an e-bike last year. I started out with a 1000W motor, but the problem with that was between its weight and the frame weight, it was just too heavy. Mounting that bike on the bike rack on back of the car was a challenge in itself. It had plenty of speed, but that isn't worth the weight factor.The first motor had a good price, but I ended up spending a bit more and going to a 500W Bafang, the same as the DF frame that was converted. It works fine with that setup. With the open frame on the EZ Sport, it is fairly easy to get the battery and controller mounted. It can hit 25 easily, but I keep it within a legal speed, especially on the trails. Slower there depending on the trail usage that day. The padded seat makes those wooden bridge decks much easier to go across!! On exercise with e-bikes, you get plenty of it! We went on a ride with some relatives on the Grand Illinois Trail by Quad Cities. The motor is an assist for me.

PhilWinIL