Rear caliper slop

[RockefellerGG]

Rear caliper slop:
https://www.youtube.com/watch?v=bqeePHy24b8

I just rebuilt the caliper, new o-rings, etc and am having trouble with the mount. I've been bleeding the brake, thinking that was the source of my clamping force problem, but I noticed that when I squeeze the brake, the entire caliper flexes more than my other bikes. I assume this motion is translated into less clamping force.

Do I need to replace the caliper carrier/shark fin? or is there a bushing that I can drill/press in to regain the tightness?

 

[cbutler]

You are missing the front dust cover on the mounting pin, but that is not effecting the clamping pressure(you do need it). I think you still have some air in the system. I would reverse bleed the system.

 

[RockefellerGG]

Does that dust cover soak up some of that slop?

 

[RockefellerGG]

I just took another look. Are you referring to the little rubber boot that slides on the pin? I have that on there. I guess it is hard to see in the video:

 

[thumperflipper]

My 07 with the scott's disk guard does the same thing, caliper flops all over. Been that way for the few years i've owned the bike. I think the inside of the aluminum disk guard that the caliper bolts to is worn out inside. Annoying because when modulating the rear brake on a downhill coasting with the engine off, it rattles and clunks. Anxious to hear if anyone has a fix (besides new parts)

 

[gasgasman]

The caliper does have excessive movement.
Some slop is normal as to allow movement when the caliper heats up.

A new caliper slide pin may take up some of the slack.