Disc rubbing when out of the saddle

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ryanw
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by ryanw on Sat Jan 09, 2021 11:09 pm

Anyone reading this, don't use this bodge as a fix.

Take the bike to a shop that will be able to fix it correctly.
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TobinHatesYou
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by TobinHatesYou on Sun Jan 10, 2021 3:19 am

Yeah like...swapping axles probably did two things

1) The new axle is stiffer and reduced fork flex somewhat.
2) The extra torque recentered the pads vs caliper.

The first part is fine...the second is dumb. All you have to do is center the caliper adequately.
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by Weenie on Sun Jan 10, 2021 3:19 am


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OnTheRivet
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by OnTheRivet on Sun Jan 10, 2021 3:42 am

ryanw wrote: ↑
Sat Jan 09, 2021 11:09 pm
 Anyone reading this, don't use this bodge as a fix.

Take the bike to a shop that will be able to fix it correctly.
Explain to me how this is wrong if he is torquing within the specs of the axle and it's fixing the problem?
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Hexsense
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by Hexsense on Sun Jan 10, 2021 6:36 pm

Is spec of the axle the only torque spec you should care?
What about the fork?
I though it's the minimum of the two that should be followed.
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ms6073
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by ms6073 on Sun Jan 10, 2021 8:51 pm

OnTheRivet wrote: ↑
Sun Jan 10, 2021 3:42 am
Explain to me how this is wrong if he is torquing within the specs of the axle and it's fixing the problem?
I imagine it might be a problem if the fork is all carbon where the higher torque spec could compress the layers, causing the thru-axle interface to deform and crack.
Last edited by ms6073 on Fri Apr 09, 2021 10:40 pm, edited 1 time in total.
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Lupo
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by Lupo on Fri Jan 15, 2021 1:58 am

It's worth checking the hub bearings and preload and if the fork has removable drop out interfaces, check these. If you have movement that's being reduced with 17nm of torque on the axle it's in these places (flex will account for some of it).

17nm might be ok for the axle but I'm curious to see if there's now drag in the hub.
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Boooooo
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by Boooooo on Fri Apr 09, 2021 10:09 pm

Visqu wrote: ↑
Mon Dec 28, 2020 8:55 pm
 Center the caliper around the disc, then reset the pads. A common mistake is to center using the pads as reference.

The caliper slots are also quite narrow and you might actually be rubbing the caliper and not the pads if the caliper is not centered properly.
finally someone! I've realized had the same identical rubbing even with pads removed! :shock: :faint: From then I've started centering whatever disc brake with the naked eye with best results.

Have to say can happens to hear a "vibration" sound beside than a "rub" sound, clearing a vibration because can happens even simple when steering fast right-left I mean without put any power. Also seems occurring more on the shimano ice-tech rotor or is the finned pads, by the way pretty sure is a vibration (same sound make the bike bouncing)
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