Paul, the owner of em3ev, is very helpful. Explain to him the difficulty of the hills (% grade, length) that are on your commute and he'll assist you. My advice is 750w since you can always just lower the rate of assist. Bafang seems to be the most popular of the aftermarket mid drives; ebikesca has the stokemonkey, but it's primarily for cargo bikes.
Originally Posted by
thiocyclist
I'm pretty convinced now I'd like to put a mid drive on my Windsor, even though it's a 56 cm frame and I'd really prefer a 54. I've already put thousands of miles on it for some reason, so it must be a good bike. Is there a particular 8Fun / Bafang kit that you all would recommend? Is it okay that I won't have disc brakes and that the frame is going to be a tad oversized?