Help please with my Formula RX front brakes.

Posts: 1
Joined: Mon Apr 02, 2012 5:48 pm

Help please with my Formula RX front brakes.

Postby Keef07 » Mon Apr 02, 2012 5:58 pm

I've been a long time lurker here, but now I am a bit stuck, so register I have.

I recently purchased a 2011 CUBE Reaction GTC. Love the bike but I am having a slight problem with the front brakes. I'm getting disc rubbing on the pads, and normally I can fix this with a bit of playing around, but not this time. I watched this vid: ... ata_player from evanscycles, and followed the tip he gives, in loosening the caliper and so forth, but to no avail. And this has created a second issue too. I now get a 'click' just before the brakes fully engage.

Any advice is greatly appreciated, thanks in advance.

Posts: 1916
Joined: Mon Jan 21, 2008 11:21 am
Location: Perth

Re: Help please with my Formula RX front brakes.

Postby mitzikatzi » Tue Apr 03, 2012 5:14 pm

This is from the Avid technical manual. Maybe you have a sticky caliper.
This might give you the idea what to do.
‘sticky’ or slow brake pad return feel
Before completely disassembling your
caliper, it’s worth trying to loosen the sticky
piston. Try the following: Clamp bicycle in
bicycle work stand. Spin affected wheel.
Lightly squeeze brake lever and watch brake
pads when lever is released. Determine
which side of the caliper has a slow returning
brake piston. Remove caliper from
bicycle. If you have a mounting bracket, it is
recommended to remove that too or just remove
the caliper leaving the bracket on the
fork or frame. Using a pair of needle-nosed
pliers, remove both brake pads and hspring.
Remove the spring pad clip from the
outside of the caliper. Using an 11mm box
wrench, press working piston into caliper
body. Squeeze brake lever slowly to move
sticky piston inward. Press the piston back
into the caliper again. Repeat these steps to
correct caliper piston inner o-ring position.
Both pistons should now be moving freely.
Re-install spring pad clip, h-spring, and pads
into caliper. Re-install caliper onto bicycle.
Spin wheel and check function. If there is no
improvement, continue with caliper service.

watch this clip from HOPE.

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