If anyone has installed the Electro Bike World 35 Amp controller on a Rad City 5 Plus I would like to know where you placed the controller unit on your bike.  Thanks in advance.

My Rad City 5 Plus has developed a strange phenomenon when pedaling.  What happens is in every revolution of the pedals it cuts out for a millisecond and the wattage goes to zero and then it catches again and on the next and subsequent pedal revolutions it repeats the problem.  This results in a herky jerky ride.  Is this a dead spot in the cadence sensor?  Has anyone experienced this problem? 

I received my Electro World 35 Upgrade kit and I was wondering if anyone had installed this on Rad City 5 Plus ST. The question I have is how did you mount the controller? The space between the seat tube and the fender is not wide enough to accommodate the thickness of the controller. It looks like I would have to put a spacer between the fender and the frame to move it backward a 1/2" or so to fit the controller box between the seat tube and the fender.
I would appreciate it if someone had installed this controller would give me an idea how they did it.
Thanks
Jay