bike cutting out after motor cuts in

[Robw1uk]

Hi I have a new kudos king was going ok untill all power cut out checked all plugs and nothing any more ideas to check before sending it back

 

[Robw1uk]

Forgot to say all turns back on but as soon as the motor starts all power goes

 

[banbury frank]

Hi
Robw1ukhelp


Just Give Dave a ring At Kudos He will only be pleased to Help +44(0)1227 792792

Did you buy direct or through on off there dealers anyway I am sure you will get Support

Frank

 

[Robw1uk]

Hello

Got it from kudos been helpfull any way just wanted to see if anything else to check they may have missed .

 

[Kudoscycles]

Rob....have you made contact with Kudos? Quick thought,if I am understanding the problem correctly-it may be the brake pedal sensors sticking in. The sensors are there to ensure the power immediately cuts if you operate the brakes. However,if one of the sensors is sticking in then the bike thinks the brakes are permanently applied and keeps cutting the power.
Dave
Kudoscycles

 

[Robw1uk]

Hello Dave

When motor kicks in LCD dies and all power , spoke to Carl and need to get packaging and box , getting and electrition to check contacts in morning

 

[johnc461165]

I had a similar problem, different bike though turned out to be a faulty battery.

 

[shemozzle999]

The LCD lights are powered from a direct feed from the battery via the battery fuse and the battery BMS.

The fault can be anywhere on the bikes power delivery circuit, i.e. the battery, BMS, fuse, fuse holder, wiring connections, controller power circuit or the motor itself.

Its sounds as if the BMS is doing its job by detecting the fault and isolating the battery, which must then be reset by the key.

I personally wouldn't let an electrician near it, I would return it to Kudos, as they are the most familiar with the operations of your bike.

 

[eddieo]

disconnect brake sensors one at a time..if it is one of these leave it disconnected until its repaired, at least bike then usable...

 

[shemozzle999]

I don't think it is a problem with the brake sensors Eddie, a sticky sensor would only supply a low level signal to the controller, overriding the pedelec sensor input, to tell the controller to stop supplying power to the motor it does not turn off the battery voltage to the LCD display as Rob described.
I only recommended returning the bike as Rob said it is new and I assume is under warrantee.

 

[NRG]

Lift the wheel and / or bike of the ground and operate the throttle or pedals, if it cuts out with no load then its most likely the controller. If the motor works ok without any load suspect the battery or BMS.

 

[Iffy]

Hi Rob

I had a problem with the motor my King cutting out and eventually stopping altogether. I spoke to Bob at P&D Cycles in Bletchley who advised checking the connections in the controller, when I looked inside the box one of the connectors had completely come apart. There are five "bullet" type connectors, two for battery power and three for the motor, I pushed mine together with pliers. I would check these first.

I hope that this helps.

 

[Robw1uk]

Thanks for all replys kudos sent me a new battery and works like a dream now . But now got a squeaky front disc brake but sure that will fade .