[wickedone31]

Hey all,

So I just installed Goodridge Hydraulic lines on my Hayes Stroker Trails, I've bled them installed new pads, and sanded the rotors. Well here's the problem, I got the calipers adjusted just right while on the repair stand, but as soon as I took it out for a test ride I start to hear rubbing on my back wheel. I got off spun the rear wheel and nothing. As soon as I get on there goes the rubbing again. I think I have isolated it to where when lateral force is applied to the rear wheel it rubs, so I removed the rear wheel to ensure the hub was nice and tight, and it was. I re-installed the wheel and turned it while applying lateral force and again I could hear the rubbing. I never had this problem before. Maybe I'ts the new pads, since there is less clearance I can notice it now. Could my Rear hub be bad, or is it just cheap? I have a Shimano XT M756 rear Hub.

 

[slider32]

Did you push the pistons back in the bores before installing new pads?

 

[Pedalphile]

All frames and wheels will have some amount of flex; you just have to determine whether something is loose or you just need to nudge your caliper a little to one side.

When you say your hub was tight, did you check the bearings if they're adjustable?

Also, if you have rear suspension, are all the pivots tight?

Another thing to check is whether the rotor is rubbing on the pads or the caliper body itself. This is another way of saying to check that the pistons are extending and retracting equally. A sticky piston can result in a situation where you have to align the caliper too far in/outboard to get no rub under no load, but under load, the rotor gets pressed against the caliper body.

-Pete

 

[twowheelsdown2002]

I have ran into instances where I had to have the rider sit on the bike, and adjust the brake alignment with weight on it. Otherwise they would get a very slight, but annoying rub.

 

[wickedone31]

When you say your hub was tight, did you check the bearings if they're adjustable?

Well on the XT Free Hub you take a wrench on either side and turn both clock wise to sandwich the bearings tight, if it is loose which I have noticed before, there will be some play. I checked the tighness and it was good, no play.

 

[wickedone31]

So I found out what the problem was. First I took it to the LBS closest to my house which is normally pretty good, and the guy there told me my hub was fine he said the problem was my single pivot design. He said it was too weak and chalked it all up to bad design. This sounded weird to me bacause my Mountain Cycle Fury got great reviews here on MTBR, and everyone said it was tortionally stiff. So i decided to get a second opinion at Incycle which is my regular LBS. The mechanic basically checked the tightness of the skewer and said "well theres the problem your skewer's not tight enough". I was under the impression that the rear skewer should be snug and not overly tight, but he said for my single pivot design it should be tight. PROBLEM SOLVED!!

Oh yeah here's a pic of my bikes design

 

[eof4si2]

Been there too.

And with a single pivot frame.

 

[Berkeley Mike]

Boy, I've never done that.......

 

[sasquatch rides a SS]

I didn't read to see if this was mentioned, but did you check to make sure that your axle was all the way in the dropouts?

 

[wickedone31]

I didn't read to see if this was mentioned, but did you check to make sure that your axle was all the way in the dropouts?

Yeah thats the first thing I checked, and I am always careful to ensure the wheel securely seated in the dropout.