I Snapped a belt on my 2000 FXD at 50k and thought I would treat the old girl to a a set of pulleys at the same time.
I bought a DOSS after marker 'Hard anodised' one and after 6 or 7 k my belt started chirping (particularly when under load).
Bottom line the rear pulley has wear on both flanks of the teeth, but also the top of the tooth has been 'squared off' the combination results in a knife edge - this I feel is a bad thing? - pictures attached.
I have always paid attention to belt tension (setting it up with no shocks fitted and swinging arm pivot directly between the pulley centres to 1/4" deflection with 10lb load) and my rear wheel is straight according to the drilled holes in the swinging arm relative to the rear axle. I will admit the belt got a little loose (1/2" deflection) on a long touring holiday - just before the chirping got bad.
What I took for granted was that the new pulley had the same offset as the original. When I look at the wear pattern on the pulley the belt has been rubbing against the left (outside) wall of rear pulley but the inner edge is untouched.
The belt runs up against the flange on the left (outside) side of the front pulley (pic also attached) - I believe that is the design intent.
I am biting the bullet and paying the £400 ish for an HD original pully and will pay a lot of attention to the alignment.
Any further wisdom on this subject would be much appreciated - especially a diagnosis of my pulley wear pattern.
I bought a DOSS after marker 'Hard anodised' one and after 6 or 7 k my belt started chirping (particularly when under load).
Bottom line the rear pulley has wear on both flanks of the teeth, but also the top of the tooth has been 'squared off' the combination results in a knife edge - this I feel is a bad thing? - pictures attached.
I have always paid attention to belt tension (setting it up with no shocks fitted and swinging arm pivot directly between the pulley centres to 1/4" deflection with 10lb load) and my rear wheel is straight according to the drilled holes in the swinging arm relative to the rear axle. I will admit the belt got a little loose (1/2" deflection) on a long touring holiday - just before the chirping got bad.
What I took for granted was that the new pulley had the same offset as the original. When I look at the wear pattern on the pulley the belt has been rubbing against the left (outside) wall of rear pulley but the inner edge is untouched.
The belt runs up against the flange on the left (outside) side of the front pulley (pic also attached) - I believe that is the design intent.
I am biting the bullet and paying the £400 ish for an HD original pully and will pay a lot of attention to the alignment.
Any further wisdom on this subject would be much appreciated - especially a diagnosis of my pulley wear pattern.