rubbing sound

itboffin
itboffin Posts: 20,064
edited June 2012 in Commuting chat
Not the good kind alas

Under certain conditions ie out of the saddle and attacking a climb I'm getting a regular rubbing noise that sounds like brake rub, yet off the bike I can see nothing.

the bike is steel and hasn't done this before, the brakes are Sram apex with 3-5 mil of clearance, wheels are shimano rs10

what could it be?
Rule #5 // Harden The Feck Up.
Rule #9 // If you are out riding in bad weather, it means you are a badass. Period.
Rule #12 // The correct number of bikes to own is n+1.
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Comments

  • nicklouse
    nicklouse Posts: 50,675
    time to service the hubs?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • daviesee
    daviesee Posts: 6,386
    Wheel flex.
    Check the spoke tension.
    None of the above should be taken seriously, and certainly not personally.
  • rubertoe
    rubertoe Posts: 3,994
    Thanks ITB - I was just about to ask the same question, although i think my issue is guard rub, damn you crudrace.

    I was actually glad to be in the flow of traffic so i couldn't hear the various creaks, rubs and rattles.
    "If you always do what you've always done, you'll always get what you've always got."

    PX Kaffenback 2 = Work Horse
    B-Twin Alur 700 = Sundays and Hills
  • gbsahne001
    gbsahne001 Posts: 1,973
    that's what I like about cycling in the Winter; ears covered so you can't hear the creaks and rattles, it usually comes as a shock when Spring hits, as to how noisy the bike has gotten.
    Winter Hack
    Everyday Commuter
  • Paul E
    Paul E Posts: 2,052
    Open up the brakes and try it to rule them out, apart from that feck knows
  • mudcow007
    mudcow007 Posts: 3,861
    does it happen when your freewheeling? or only if your pedalling?

    bottom bracket?

    tweed trousers rubbing on the seat tube?
    Keeping it classy since '83
  • Sharkyssurfers
    Sharkyssurfers Posts: 767
    mudcow007 wrote:
    does it happen when your freewheeling? or only if your pedalling?

    bottom bracket?

    tweed trousers rubbing on the seat tube?
    #

    or is it the spd wellies rubbing against your leg :shock:
    Sorry its not me it's the bike ;o)

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  • jzed
    jzed Posts: 2,926
    Out of the saddle. A rubbing sound. Sure its not your gut on the top tube?
    :lol:
  • UndercoverElephant
    UndercoverElephant Posts: 5,796
    daviesee wrote:
    Wheel flex.
    Check the spoke tension.

    This. Or the gut rub as JZed suggested.
    Sun - Rain - Snow
  • mudcow007
    mudcow007 Posts: 3,861
    or is it moobs rubbing together causing friction/ noise?
    Keeping it classy since '83
  • rjsterry
    rjsterry Posts: 29,342
    UndercoverElephant wrote:
    daviesee wrote:
    Wheel flex.
    Check the spoke tension.

    This.

    +1. I notice quite a bit of wheel flex on the RS10s out of the saddle, and I don't exactly put a lot of weight through them.
    1985 Mercian King of Mercia - work in progress (Hah! Who am I kidding?)
    Pinnacle Monzonite

    Part of the anti-growth coalition
  • Kieran_Burns
    Kieran_Burns Posts: 9,757
    mudcow007 wrote:
    or is it moobs rubbing together causing friction/ noise?

    more chamois cream needed 'down below'?

    Time to wax again? Or would that be more a rustling sound than rubbing?
    Chunky Cyclists need your love too! :-)
    2009 Specialized Tricross Sport
    2011 Trek Madone 4.5
    2012 Felt F65X
    Proud CX Pervert and quiet roadie. 12 mile commuter
  • DrLex
    DrLex Posts: 2,142
    Kieran_Burns wrote:
    mudcow007 wrote:
    or is it moobs rubbing together causing friction/ noise?

    more chamois cream needed 'down below'?

    Time to wax again? Or would that be more a rustling sound than rubbing?

    Euuuuw! TMI
    Location: ciderspace
  • tgotb
    tgotb Posts: 4,714
    Check the insides of the chainstays for signs of tyre rub.

    Find your stiffest rear wheel, whack it in, and see whether the problem still occurs.
    Pannier, 120rpm.
  • Wrath Rob
    Wrath Rob Posts: 2,918
    mudcow007 wrote:
    or is it moobs rubbing together causing friction/ noise?
    I dread to think what's on the other side of that link...
    FCN3: Titanium Qoroz.
  • Kieran_Burns
    Kieran_Burns Posts: 9,757
    Wrath Rob wrote:
    mudcow007 wrote:
    or is it moobs rubbing together causing friction/ noise?
    I dread to think what's on the other side of that link...

    man cleavage.
    Chunky Cyclists need your love too! :-)
    2009 Specialized Tricross Sport
    2011 Trek Madone 4.5
    2012 Felt F65X
    Proud CX Pervert and quiet roadie. 12 mile commuter
  • itboffin
    itboffin Posts: 20,064
    nicklouse wrote:
    time to service the hubs?

    Hope not as they're new
    Rule #5 // Harden The Feck Up.
    Rule #9 // If you are out riding in bad weather, it means you are a badass. Period.
    Rule #12 // The correct number of bikes to own is n+1.
    Rule #42 // A bike race shall never be preceded with a swim and/or followed by a run.
  • rjsterry
    rjsterry Posts: 29,342
    itboffin wrote:
    nicklouse wrote:
    time to service the hubs?

    Hope not as they're new

    Shimano factory workers do seem to be a bit stingy with grease when assembling wheels.
    1985 Mercian King of Mercia - work in progress (Hah! Who am I kidding?)
    Pinnacle Monzonite

    Part of the anti-growth coalition
  • gtvlusso
    gtvlusso Posts: 5,112
    masturbating, on a climb, chapeau old chap...I am impressed!

    I can only do it downhill.....and have to carry a passenger.

    :shock: :lol:
  • itboffin
    itboffin Posts: 20,064
    Ill ride home with both brakes open that'll confirm it or make the problem no longer a problem
    Rule #5 // Harden The Feck Up.
    Rule #9 // If you are out riding in bad weather, it means you are a badass. Period.
    Rule #12 // The correct number of bikes to own is n+1.
    Rule #42 // A bike race shall never be preceded with a swim and/or followed by a run.
  • jzed
    jzed Posts: 2,926
    itboffin wrote:
    Ill ride home with both brakes open that'll confirm it or make the problem no longer a problem

    Corset may prevent the gut rub :lol:
  • itboffin
    itboffin Posts: 20,064
    had to stop twice on the way home for in-ride-fettling opened brakes fully out of the saddle climbing and almost no noise, so i'm hoping that i just need to leave more room between to rim and pads than i'd normally use with campag or shimano, otherwise it means the RS10 flex under almost no load :shock:

    Not sure how to check spoke tension other than squeezing them which ive done and they feel the same all over.
    Rule #5 // Harden The Feck Up.
    Rule #9 // If you are out riding in bad weather, it means you are a badass. Period.
    Rule #12 // The correct number of bikes to own is n+1.
    Rule #42 // A bike race shall never be preceded with a swim and/or followed by a run.
  • daviesee
    daviesee Posts: 6,386
    As it is the spokes job to stop the rim flexing, i suspect it is their fault.
    Unfortunately, like yourself, I am next to useless at truing a wheel.
    I can do it good enough to be workable but if I get it running even through the pads then the wheel is invariably not true round.
    I have resorted to paying people who can do it better and quicker :oops:

    Practice and patience is the key. I have been told :wink:
    None of the above should be taken seriously, and certainly not personally.
  • itboffin
    itboffin Posts: 20,064
    The wheel is perfectly true, i've checked in a park tools truing stand
    Rule #5 // Harden The Feck Up.
    Rule #9 // If you are out riding in bad weather, it means you are a badass. Period.
    Rule #12 // The correct number of bikes to own is n+1.
    Rule #42 // A bike race shall never be preceded with a swim and/or followed by a run.
  • daviesee
    daviesee Posts: 6,386
    Yeah but it is not under load on the stand. It's the loading that is causing the flexing.

    Edit:- Don't want to be insulting, genuinely trying to help......From this review
    http://road.cc/content/review/21374-shi ... 0-wheelset

    "If you’re a heavier rider they might be a good choice if you want something stylish, but in my opinion bigger types would be better off with something with a few more spokes."

    20 Spokes doesn't sound like much on a rear wheel. For perspective, I have 32 and the builder suggested 36 and 32 as a minimum for a guy my size (13 1/2 stone) :oops:
    None of the above should be taken seriously, and certainly not personally.
  • First.Aspect
    First.Aspect Posts: 16,963
    Always worth checking the inside of the chain stays if you think you have flexy wheels.

    ITB, could also be your high heels scraping the ground at the bottom of the pedal stroke. Keep those toes pointed like they taught you in ballet class and see if the noise goes away.
  • itboffin
    itboffin Posts: 20,064
    Interesting stuff but they weren't doing this until recently and as for heavy rider i suppose 174lb (12.4st) is heavy in cycling terms but not for these wheels I believe.
    Rule #5 // Harden The Feck Up.
    Rule #9 // If you are out riding in bad weather, it means you are a badass. Period.
    Rule #12 // The correct number of bikes to own is n+1.
    Rule #42 // A bike race shall never be preceded with a swim and/or followed by a run.
  • itboffin
    itboffin Posts: 20,064
    correction 173lb :D
    Rule #5 // Harden The Feck Up.
    Rule #9 // If you are out riding in bad weather, it means you are a badass. Period.
    Rule #12 // The correct number of bikes to own is n+1.
    Rule #42 // A bike race shall never be preceded with a swim and/or followed by a run.
  • rjsterry
    rjsterry Posts: 29,342
    itboffin wrote:
    correction 173lb :D

    Like I said, I've noticed some flex and I'm 2 stone lighter - that's in fairly new RS10s as well. I think they just are a bit flexy. Parktools do a spoke tension gauge IIRC.
    1985 Mercian King of Mercia - work in progress (Hah! Who am I kidding?)
    Pinnacle Monzonite

    Part of the anti-growth coalition
  • daviesee
    daviesee Posts: 6,386
    Another thought. Which you won't like.......

    If it is not the wheels flexing, it is the frame :shock:
    Either that or put down less awesome power :wink:
    None of the above should be taken seriously, and certainly not personally.

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