16-12-2020, 08:36 AM
The brake cams are handed, so they may have been put on the wrong sides.
The cotters are angled, and can be put in from the front or the rear - this changes the final position of the ball on the lever end in relation to the kingpin.
Modifications to the brake shoe pivots or the shoes might have been done, though unlikely.
The brake levers might be worn or bent.
So you have a bit of trial and error inspection to do.
The design rarely works perfectly, but yours does look to be set up incorrectly.
My first action would be to check the cams, swap them over to see what difference that makes.
Unless one side is ok, in which case you have (say) two left handed cams.
What does the set up at the rear axle look like?
If different each side, the cams are probably mixed up.
The cotters are angled, and can be put in from the front or the rear - this changes the final position of the ball on the lever end in relation to the kingpin.
Modifications to the brake shoe pivots or the shoes might have been done, though unlikely.
The brake levers might be worn or bent.
So you have a bit of trial and error inspection to do.
The design rarely works perfectly, but yours does look to be set up incorrectly.
My first action would be to check the cams, swap them over to see what difference that makes.
Unless one side is ok, in which case you have (say) two left handed cams.
What does the set up at the rear axle look like?
If different each side, the cams are probably mixed up.