I have an old Wisper 905 that I upgraded with a 48V battery and a 17A controller some time ago.
It was working great, until earlier this year, as my wife was pulling a heavy trailer with the bike it suddenly started cutting out power if PAS was set above 3 (out of 5). On throttle it would cut out immediately.
I posted a thread about it here https://www.pedelecs.co.uk/forum/threads/power-cuts-out-as-soon-as-load-increases.37619/ and got some good suggestions, but I now wanted to start over with a new thread as there was never a conclusion. I kept using the bike on PAS 3 and it did the job for me.
The other day though, it gave up entirely. Everything looks good, battery is at 54V, but nothing happens. Well maybe initially there is some kind of little "ticking" sound from the motor, but then nothing. On any level of PAS or throttle.
So what died? The battery? Even though it's showing full voltage? The controller (again!) Or the motor? Could I have killed the 250W BFUn motor with supplying it with too much power? Or could it be anything else? Someone mentioned a wire could have gone resistive, but how do I check for that?
Any other ideas?
I'm considering giving up on this bike, but it's an old dear friend, and I was hoping to keep it alive for a while longer.
It was working great, until earlier this year, as my wife was pulling a heavy trailer with the bike it suddenly started cutting out power if PAS was set above 3 (out of 5). On throttle it would cut out immediately.
I posted a thread about it here https://www.pedelecs.co.uk/forum/threads/power-cuts-out-as-soon-as-load-increases.37619/ and got some good suggestions, but I now wanted to start over with a new thread as there was never a conclusion. I kept using the bike on PAS 3 and it did the job for me.
The other day though, it gave up entirely. Everything looks good, battery is at 54V, but nothing happens. Well maybe initially there is some kind of little "ticking" sound from the motor, but then nothing. On any level of PAS or throttle.
So what died? The battery? Even though it's showing full voltage? The controller (again!) Or the motor? Could I have killed the 250W BFUn motor with supplying it with too much power? Or could it be anything else? Someone mentioned a wire could have gone resistive, but how do I check for that?
Any other ideas?
I'm considering giving up on this bike, but it's an old dear friend, and I was hoping to keep it alive for a while longer.