BBSHD crank axle movement

[Gagsinio]

Hi, my BBSHD started to make a loud clicking noise and no drive. Took it apart and the freewheel pawl was a bit knackered.

Put a new one in, same result. The axle assembly, round plate, the bearing, then pawl, seem to move out around half an inch toward where the chain wheel would be. Maybe a blown bearing ? Any help gratefully recieved,

Cheers,

G

 

[jarob10]

So you found the pawl damaged, but did you inspect the driven spline into which the pawls engage? I’ve had to replace the splined part on two different bbsxx’s

Not sure a clutch problem would explain your axial play issue though - could the retaining circlip have become unseated?

 

[Gagsinio]

Hi, thanks for the reply.

Replaced the pawl and that was not the problem. Ran the motor with cover off and a loud clicking noise is coming from the drive. Could this be the nylon gear having a moment?

Cheers,

G

 

[vfr400]

Hi, thanks for the reply.

Replaced the pawl and that was not the problem. Ran the motor with cover off and a loud clicking noise is coming from the drive. Could this be the nylon gear having a moment?

Cheers,

G

Doesn't seem likely because the motor and nylon gear spin very fast compared with the crank. When it's damaged you loose drive completely.

 

[jarob10]

Don’t be tempted to use the motor until all mechanical noises are resolved

You’ll have to troubleshoot yourself- repeat the motor spin test after incrementally removing drive gears etc - eventually the culprit will reveal itself