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Arrows lined up. Solid contact when pushed together. I made a wooden clamp and put a good squeeze on the connector. Ran well then back to arcing.

My thoughts as well. I suspect the power from the controller is not pure sin wave but have had problems with other controllers . I just put new connector wire from controller and it ran well for a while. Rad rover with 52 v battery 25 amp controller 750 motor upgrade.

The arcing is occurring in the 3+6 round connector between control and motor. The arcing happens when I am riding and causes the motor to seem like it is grinding gears but it is not.

My bike keeps arcing at the motor plug connection. Any ideas???

If you have an ordinary pedal bike I would suggest riding it as a warm up before jumping on the POWER machine. If you are not a bike rider and just started on an electric bike you should rent or borrow a pedal bike and get familiar with cadence, geometry, braking, turning etc before you have...

I traced my grinding noise to a burnt connection in the controller to motor connector. That may have been caused by a combination of too much power and riding in a very heavy rain. The connection must have been arcing which resulted in a very irregular operation of motor. When things dried out...

Take a look at your 3 pin connector from controller to motor. My motor was making a grinding noise and when I unplugged it to begin investigating I saw that one of the gold colored receptacles was scorched, this was caused by arcing when I was riding in a downpour. It was quite a job to...

got the motor and battery from electrobike world the contoller from Bolton.

That sounds just awful. I don't think mine is that clicky.

Hmm. I have a similar problem. Will listen more carefully for clang but being quite deaf a lot of clicks and squeaks go right by me. My motor makes a grinding noise.

Yes but my motor doesn't quit just some sort of "out of phase" grinding and vibration. Scared the heck out of me. I start off in 0 to get bike moving then use a high setting to get zooming. Always seems to occur at take off. Hope someone can give the problem a name so I know what to tell...

You are not the only one. Was riding my upgraded rad-rover had sever grinding noise and increased to vibration. I thought it was the gears all torn up but I changed setting and set of again and no noise. I think it has something to do with the new controller not being a "true sine wave" device...

Recently installed Bolton controller upgrade on a Radrover. Now getting intermittent "grinding" vibrations. Got so bad I could feel it through the seat. Almost always at take off under load. Any opinions?

Put a 52 volt battery on and see what happens. With PAS settings wide open I have to be very careful when I take off and top speed in excess of 55k/h

I know exactly what is going on though it baffled me at first. The 48/14 is paired with a 15 amp controller on stock bike. With the upgraded controller the battery is discharging faster than it would in stock configuration. The internal BMS (battery management system) shuts the battery down...

well that is good to know! TY

I got 52 V 20Ah from electro bike world. And the 35 amp controller & screen from Bolton. Have not done much riding last few days because as you know it has been cold. The bit of riding I have done is quite frankly mind blowing. A fully charged 52 is almost 60 volts and my charger seems to be...

Oh my lock is on the opposite side alright I just had a brain fart.

Here is a battery fuse story and perhaps a tale of caution. I was busy doing stuff on my ebike and decided that I needed to remove my 48 V battery. In some strange twist of thinking I picked out the dust plug on the battery and took out my keys and, thinking I was unlocking, stuck the key in...

The long answer is no.