I just picked up my cetma cargo bike with a bionx rear hub motor. If anybody has any questions about the setup feel free to ask.
I also got a question for anyone who had a similar experience. Everytime the bike goes over 17 mph the front wheel, which is a 20", will wobble violently. The front box isn't loaded so i think it might be the bike lifting slightly off the ground just enough to cause the wobble. Any info is appreciated.