Formula RX Rear brake sticking

JayKingFunk

Evening all,

I've got a set of Formula RX brakes on my bike and the rear brake occasionally sticks. It starts really gradually, so the disc start to 'whine' as it rubs the pads. It's as though the piston is slowly coming out more than it should and/or not returning to where it should do. It's worse when they get hot. Sometimes it's fine for ages then it just starts again, I've recently had them bled and it happened again the other night so I realigned the calliper and it stopped.

I've had the piston out completely and greased around it invade it was becoming seized but everything looks perfectly fine with the brake.

They are great brakes apart from this, anyone else experienced it or know how to stop it from happening again?

Cheers, J.

The Rookie

Grease is a really bad idea, it collects dirt forming a thick paste which then makes the piston stick.

Clean it with alcohol only, working the piston in and out to make sure its fully clean, leave it dry.

JayKingFunk

Ah ok, thanks for the advice. I'll clean it out and try that!

Cheers