throttle power on/off up to 5 mph

[Russ1950]

I have the Himiway Zebra. Works fine when starting the bike by pedaling; throttle works fine when speed > 5mph. When I use the throttle to start the bike from full stop the motor goes on and off up to about 5 mph and then motor and throttle works fine.

Here is a video of the problem.

I have replaced the throttle and the controller. I am about to replace the motor. All under warranty.

Seems to me the motor is not receiving constant power and this is not a function of the motor itself. I'm not technical, so was wondering if anyone who understands how these things work can see this as a motor problem.

 

[ElHegpah]

That is bizarre.

Never heard one sound like that, but the 5 thin Hall sensor wires to the motor, if damaged or a sensor bad inside the motor, will cause rough running problems from a slow or standing start until some speed is reached.