need help

[les drew]

I was riding my cube electric mtb when i fell off riding through a ford i picked the bike up straight away and the motor didnt seem to be working.My gears had gone to pot with the chain going over the big cog when shifting.so i put the chain back on and just used the others at this point the motor worked and got me several miles home now when ive gone to adjust my gears at home the motor is not kicking in again i dont know what to do.I have a cube performance motor.can anyone offer any advice.

 

[les drew]

could a bent deraillier cause issues with the motor

 

[EddiePJ]

In relation to the motor, have a check to that you haven't knocked/moved the sensor magnet from the spokes. It can move quite easily if you take a tumble.

Hopefully it is as simple as that.

PDF showing the correct position. http://www.cube.eu/fileadmin/user_upload/documents/bedienungsanleitungen/BOSCH_PERFORMANCE.pdf

 

[les drew]

i dont think its that as the speed still works it would just say 0 im hoping the derallier been bent could be confusing the motor with all these calculations it does hopefullly someone on here can tell me if thats the case

 

[EddiePJ]

I can't imagine that the gears would have anything to do with the issue.

When you say that you fell off riding through a ford. Did the motor and battery end up in the water as well?

 

[les drew]

it was pretty shallow i dont think its a water problem as after messing around with the gears it got me 8 miles home but when trying to adjust my gears at home it went off again i also saw this on the net.
147 - Endless-sphere.com • View topic - New Bafang Crank-drives
endless-sphere.com/forums/viewtopic.php?f=28&t=50104&start...
16 Oct 2014 - 25 posts - ‎14 authors
The biggest difference is that while the Bosch immediately reduces power with .... Themotor turns and screen looks fine but nothing comes out of it. .... If this doesn't work, it could be a bent derailleur hanger, worn cogs and/or

 

[martin@onbike]

Remove , clean the rear contacts with a dry cloth and replace the display making sure it's fully located.
Do the same with the battery.
Check that you haven't snagged one of the cables leading to the display holder.
Remove the chain off the front chainring if your derailleur is bent and press and hold the walker button to see if the motor is functioning...If it's still not working after checking all of the obvious, return to your dealer for diagnosis.

 

[les drew]

Remove , clean the rear contacts with a dry cloth and replace the display making sure it's fully located.
Do the same with the battery.
Check that you haven't snagged one of the cables leading to the display holder.
Remove the chain off the front chainring if your derailleur is bent and press and hold the walker button to see if the motor is functioning...If it's still not working after checking all of the obvious, return to your dealer for diagnosis.

Thanks Martin I have just done that as far as I can see the wires are fine speedo works etc also the walk assist works and the motor kicks in fine it just doesn't kick in when I turn the peddles

 

[les drew]

this is a video of me falling off.

 

[les drew]

tried my bike on the stand again this morning again by turning peddles still no assistance i took it outside to ride and it was working fine so maybe its been ok all the time im confused.

 

[RobF]

If moisture was causing the problem it may have dried overnight.

Leave the bike somewhere warm today if you are not using it.

 

[Cyclezee]

Hi Les,

I'm sure it wasn't funny for you at the time, but a nice video all the same.

Hopefully it was just a moisture problem and all will be well now, most modern electric bikes are pretty weatherproof, but none are 100% waterproof.

As usual, good advice from the guys on the forum.

 

[martin@onbike]

Les..It's tricky to get the motor to operate under load on the stand, as it requires pedal pressure to operate...If you hold the back brake and push down hard and fast on the Pedal then release the brake, it should spin.-Mind your fingers though!

 

[D C]

I'll bet there was a bridge you could have used but where's the fun in that!
If only we had a personal re-wind button.
Good try and thanks for sharing your misfortune.

 

[les drew]

I used the bridge but i went back to try the fun way wish i never lol thanks for all the help and glad you like the video lol