High pitch noise on BD24

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patm0007
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Last seen: 7 years 1 month ago
Joined: Saturday, July 26, 2008 - 12:14
Points: 65
High pitch noise on BD24

After 3 or 4 miles the motor starts making a high pitch noise at full throttle, decreased throttle some and in a little bit the noise returns, decrease throttle some more , and on down a little more until it won't run at all, just makes the noise when given some throttle. The sounds like like something is spinning inside .

I took it apart and all seems well , magnets , brushes, winding .

any ideas as to what the problem?

Thanks,
Pat

eddyator
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Last seen: 7 years 2 months ago
Joined: Tuesday, April 3, 2012 - 19:56
Points: 2
Re: High pitch noise on BD24

Is the noise coming from the motor controller or motor?

Any chance of the bearings needing service?

patm0007
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Last seen: 7 years 1 month ago
Joined: Saturday, July 26, 2008 - 12:14
Points: 65
Re: High pitch noise on BD24

The spinning or high pitched noise was coming from the front mounted hub motor.
I checked the bearing and they turn smoothly and seem Ok.. Magnets are in place and brushes good. The armature is well seated and secure in hub. I put it back together and it is running good but I haven't gone >4 miles.

patm0007
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Last seen: 7 years 1 month ago
Joined: Saturday, July 26, 2008 - 12:14
Points: 65
Re: High pitch noise on BD24

It was the BMS card going bad until it died. I would have bet the family farm the something was loose and spinning in the hub while the bike was not moving.

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