that bl**dy rubbing noise

ashleydwsmith
ashleydwsmith Posts: 693
edited May 2014 in Workshop
got a LOOK 675, great bike, however i have a rubbing noise that is doing my head in.

its odd, as brakes are not rubbing, shoes are not rubbing against crank arms. it sounds like its coming from the left side. bizarrely today it generally stopped when i looked down to try and locate it if that makes sense.

it doesnt happen when in the stand, so got to be force being applied, but dont know what to do.

Comments

  • sungod
    sungod Posts: 17,351
    chain rubbing on the front mech?
    my bike - faster than god's and twice as shiny
  • ashleydwsmith
    ashleydwsmith Posts: 693
    Nope, it's not a consistent rub, it's every revolution. Just tried to get the bike to do it at home again, but no. The only other thing I can think is my fat thighs rubbing! Lol
  • sungod
    sungod Posts: 17,351
    yes, but if the bb/chainset is flexy it can cause the chain to rub on the front mech once a revolution, you'll only notice it under power
    my bike - faster than god's and twice as shiny
  • ashleydwsmith
    ashleydwsmith Posts: 693
    Someone else said that, but I thought look bikes were one of the stiffest out there, and running ultegra!
  • Matthewfalle
    Matthewfalle Posts: 17,380
    Have a quick squiz over the frame - if anything is rubbing consistently then it will leave a mark - this should be a giveaway to what it causing it.
    Postby team47b » Sun Jun 28, 2015 11:53 am

    De Sisti wrote:
    This is one of the silliest threads I've come across. :lol:

    Recognition at last Matthew, well done!, a justified honour :D
    smithy21 wrote:

    He's right you know.
  • ashleydwsmith
    ashleydwsmith Posts: 693
    Yeah checked the frame can't see anything
  • Matthewfalle
    Matthewfalle Posts: 17,380
    Cleats all ok and not worn/dried out (can cause a squeak/rubbing noise)? Also pedals all ok?
    Postby team47b » Sun Jun 28, 2015 11:53 am

    De Sisti wrote:
    This is one of the silliest threads I've come across. :lol:

    Recognition at last Matthew, well done!, a justified honour :D
    smithy21 wrote:

    He's right you know.
  • ashleydwsmith
    ashleydwsmith Posts: 693
    Might need to check pedals, but speedplays so no grease gun!
  • dee4life2005
    dee4life2005 Posts: 773
    Crank brushing outside of front derailleur when in the big cog?
    http://app.strava.com/athletes/307297
  • mitchgixer6
    mitchgixer6 Posts: 729
    FD cable hitting crank arm?
  • ashleydwsmith
    ashleydwsmith Posts: 693
    mitchgixer6 wrote:
    FD cable hitting crank arm?

    Nope, though this might be the the problem at first but bent the cable back so it points straight up so not that !
  • father_jack
    father_jack Posts: 3,509
    Check chainset, when my Giant was built they must have tigthened up one side fully then the other. Spent ages with BB and derailler setting up before that, thought BB has knackered or BB tube was off center.
    Say... That's a nice bike..
    Trax T700 with Lew Racing Pro VT-1 ;-)
  • ashleydwsmith
    ashleydwsmith Posts: 693
    Father Jack wrote:
    Check chainset, when my Giant was built they must have tigthened up one side fully then the other. Spent ages with BB and derailler setting up before that, thought BB has knackered or BB tube was off center.

    father jack do you mean the crankset at the bb? i have thought about this but havent got round to checking it yet, assuming you mean the same thing?
  • father_jack
    father_jack Posts: 3,509
    The chainrings. Those five bolts not tightened evenly so chainrings were wobbling, and thought BB tube problem

    http://www.chainreactioncycles.com/shim ... -prod34735
    Say... That's a nice bike..
    Trax T700 with Lew Racing Pro VT-1 ;-)

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