Hi everyone

[Mudskipper]

Hi everyone, I've got a wisper alpino 906 which i got as a fixer upper, I've got a new 15ah battery and a controller but I have a couple of teething problems.

When setting off there is a sqeaking noise like a brake and the power drops off, if I release throttle and reapply then I can continue, once moving at a reasonable speed the problem does not occur, could this be that I haven't wired in the hall sensors or does it sound more serious.

The other problem I have is with the brake sensors, there are two wires on the controller, which if I short out then it cuts the motor power, but applying the levers (tektro) which are two wire and seem to have some sort of a magnetic switch has no effect.

Any suggestions will be appreciated,

 

[Nealh]

Lift the wheel and see if it rotates freely if not look to see where the binding/rubbing is and make adjustments.
How many wires does the drive motor have ?
Brakes wise the levers/reed sensor or wiring may be faulty.

 

[Mudskipper]

hi, thanks for the response, when the front is lifted and i spin the wheel there is no squeak noise and the motor seems to perform ok

 

[Nealh]

If the issue is when the motor is under load it might be internal, possibly worn planetary gears or worn bearings. Does the motor spin true with no axle play ?

Also you haven't said how many wires the motor has.
If the motor is square wave then not all controllers work properly if they are for sensored motors.

 

[Mudskipper]

Yes, no axle play, a slight imbalance at high speed though, 3 power wires going to motor, but another 3 not connected (blue , black, red)

 

[Fat Rat]

Welcome to the site

 

[Nealh]

Those motor halls really need fitting though the new controller might not be compatible, most modern hall sensor hubs /controllers have a minimum of 3 phase wires and 5 or 6 sensor wires. Yours having 3 +3 isn't very compatible, you could try connecting the 3 halls colour to colour with the new controller but not sure it will help. You might be better speaking to David Miall of Wisper bikes.

 

[Mudskipper]

Welcome to the site

Thanks Fat Rat

 

[Mudskipper]

Those motor halls really need fitting though the new controller might not be compatible, most modern hall sensor hubs /controllers have a minimum of 3 phase wires and 5 or 6 sensor wires. Yours having 3 +3 isn't very compatible, you could try connecting the 3 halls colour to colour with the new controller but not sure it will help. You might be better speaking to David Miall of Wisper bikes.

I think the other 3 wires may be a speed sensor rather than hall sensors

 

[Nealh]

If they are speed sensor connect R/R, Blk/Blk and Blu/Wh on the controller hall plug.
The speed sensor uses a hall to detect the magnet and the other two are just for power.