grinding to a halt

[wonderpup]

Once again my Wisper has ground (literally) to a halt. I was pumping up the hill home late last night, and a grinding noise from the controller and rear wheel led to a full failure. Waiting for a few seconds (to catch my breath as well) and now it feels really underpowered and sounds like a sack of spanners in a dryer.

I reckon getting to it with contact cleaner will do the trick, so its a lunchtime job. News as I have it.

Anton.

 

[flecc]

Hope that does the trick Anton, sounds like a poor Hall wire connection between the motor and controller.

If the contact cleaner doesn't work, unplugging and replugging the motor to controller connectors should remake them and get it going.
.

 

[wonderpup]

Thanks Flecc. Dismantled the connections, cleaned them up, but it still sounds like a grindy/whiney thing, and cuts out from time to time. Last time Wisper replaced the whole controller. I do cycle up a solid hill, and I'm not the lightest. I never heard what was wrong with the old one (if anything). I wonder if its overheating or otherwise straining itself!

I'm taking it to the guy I bought it from on Monday, and he can spend some time having a look.