Topic: Caliper Rattle

[crazypj]

I think its 10mm, use 3/8" washers to shim.
 If its greased it helps to damp down movement a bit as well.
PJ

[Bob Wessner]

I think its 10mm, use 3/8" washers to shim.
 If its greased it helps to damp down movement a bit as well.
PJ

Thanks for the equivalent measurements. Checked on-line in a couple of places and if I was willing to buy them in 1,000 lots, they're readily available. I guess I will go check some local hardware shops.

[Bob Wessner]

Well, after changing the fork oil yesterday and being embarrassed by complaining about out temps when others have to suffer through worse, I went back out to the garage to tackle the rattling caliper problem.

I had no luck finding shim washers, but our local true hardware store had shim stock. I bought a few inches in varying thicknesses.

When I pulled the caliper assembly apart I found there was enough wear such that the lower o-ring on the pivot arm had worked out of the recess a bit allowing the pivot arm to vibrate against the pivot pin. I had some gasket punches, but one was too small and the other too big. I sandwiched the shim stock between two 1x's with C-clamps and drilled a couple of 3/8" holes. Removed the shim stock and then used scissors to trim the outer circumference.

Put everything back together, no rattle or clacking. Took it for a ride today and even over the most challenging pavement and railroad tracks, not a sound. Seemed like I was riding a new bike. Oh, OK, a newer bike.

[bwaller]

Well done Bob, I quess you can remove the earplugs again!