Rear Disc Problems ... Magura

"HP" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Hi Group,

I have recently bought a second-hand Cannondale Super V
700SX with Magura (CLARA) disc brakes on the front and
rear. The front brakes work fine, single finger lock-up.
The rear brakes take a lot of effort (full hand squeeze)
to lock-up. I have bled the brake line twice, ground back
the pads to ensure a clean & flat contact surface. The
pads are correctly adjusted to just touch the disc.

Has anyone had any experience with this problem?

Any help will be greatly appreciated.

Thanks,

H.

Even tho you have bleed it, I bet you still have an air
bubble in the line or caliper. It only takes one to
screw it up.

Dave

do the brakes feel "spongy"? is there a lot of travel in
the lever before the brakes start to engage? can you get
the lever to "bottom out"? if none of these, it is not a
"bleed problem".

could be that there is contamination on the brake pads that
is not removed by sanding off the surface. I'd clean the
rotor with alcohol and put in a new set of pads.

charlie

Thanks Charlie,

From what you said, I doubt it is air in the brake line,
There is a little slop initially, but I cannot bottom the
lever out!. I bought some new pads and put them in today ...
seems a little better, I will see how they go after I run
them in tomorrow on a longish ride.

Cheers,

h.

"Charles Beristain" <[email hidden]> wrote in
message "]news:[email hidden]...

Quoted message said:

do the brakes feel "spongy"? is there a lot of travel in
the lever before the brakes start to engage? can you get
the lever to "bottom out"? if none of these, it is not a
"bleed problem".

could be that there is contamination on the brake pads
that is not removed by sanding off the surface. I'd clean
the rotor with alcohol and put in a new set of pads.

charlie