Controller

[sjakob52]

My bike runs smootly when I use the pedals, but when I stop pedaling the display and the power drops to zero. Is it my controller or could it be a wire that is defect.

 

[sjpt]

That's the way a pedelec has to behave by law, assist should only be provided while pedalling. It's an EAPC (electrically assisted pedal cycle), not an electric motor bike. There are some exceptions (see Wisper bikes with throttle), but that's the basic rule.

You might be able to program the controller to get over that restriction, and also the restriction that assistance should stop by 15.5 mph. If you did so it would no longer class as a pedelec, but as a moped. You'd need license, registration, number plate, and insurance.

Until a few months ago people were generally getting away with breaking the law this way. There have been lots of police clampdowns recently so probably no longer worth the risk.

 

[Nealh]

Any power in watts shown will cease if one isn't peddalling.
If the odo speed goes to 0 then it is beause one doesn't have a speed sensor or a setting for the speed sensor is incorrect.

 

[saneagle]

My bike runs smootly when I use the pedals, but when I stop pedaling the display and the power drops to zero. Is it my controller or could it be a wire that is defect.

It's the speed sensor or the speed sensor setting. Without knowing what you have, I can't help you further,

 

[sjakob52]

The problem was that the displayed droped to level zero. It used to stay at set from start, but where interupted. When this happened I had to reset the level and start again. Quite annoying. Also occasionally a weird sound from the front wheel. I think it might have had something to do with a loose connection in the battery case. I looked for the controller which is behind the battery case and after resampling the case the problem had disappeared. My bike works fine again.