Springy noise

itboffin
itboffin Posts: 20,064
edited April 2010 in The workshop
Oh my fooking god this is driving me mad!!!

My CX bike sounds like I'm bouncing on a old bed spring when climbing or pushing hard, I've tried full strip and clean including changing chainrings and removing BB.

Arhhhh what can this 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.
Rule #42 // A bike race shall never be preceded with a swim and/or followed by a run.

Comments

  • whyamihere
    whyamihere Posts: 7,715
    Have you checked the frame for cracks?
  • el_presidente
    el_presidente Posts: 1,963
    The saddle or seatpost? Bars / fork / headset?

    your knees?
    <a>road</a>
  • tgotb
    tgotb Posts: 4,714
    Cleats?

    My road bike is squeaky as h*ll at the moment with SPDs, but totally silent with Looks...
    Pannier, 120rpm.
  • itboffin
    itboffin Posts: 20,064
    Yes i've checked the frame several times

    i've also changed the following;
    shoes & cleats
    pedals
    bottom bracket
    seat post
    saddle
    stem
    shifters & cables
    chainrings & bolts
    cycle comp
    bottle cages & pumps
    saddle bag & mount
    front derailleur
    headset spacers - carbon :wink:

    that leaves;
    crank arms
    rear derailleur
    cassette
    wheels
    chain
    headset
    forks - I hope not :(

    I've greased or coopersliped every surface.
    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.
  • el_presidente
    el_presidente Posts: 1,963
    Might be a loose spoke in a wheel
    <a>road</a>
  • itboffin
    itboffin Posts: 20,064
    el_presidente wrote:
    Might be a loose spoke in a wheel

    checked and all okay, I did just discover the chain is wickedly stretched, could that possibly be the source?
    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
    Balls!!!! I think the cassette is shagged as well, I swapped the wheels over to the new commuter, on which everything else is brand new, indexing perfect as usual 8) :lol:

    However when I stamp on the pedals the chain jumps neither up nor down just around, sort of slipping, how can you tell if a cassette is worn?
    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.
  • CarlosDSanchez
    CarlosDSanchez Posts: 455
    Compare it to a new one. If a new chain is slipping on it, then it's worn out. Either replace it or put the old chain back on and run it into the ground. Doubdtful that it's a worn drivetrain making a springy sound though, unless the chain really needs oiling.
    Dolan Preffisio
    2010 Cube Agree SL

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