Creak creak creak

bikeit65
bikeit65 Posts: 995
edited April 2010 in Workshop
My bike a Giant aluminium road bike which has a carbon seatpost fitted with an aluminium shim recently started to creak, as i was certain it was coming from the seatpost area of the bike i took the seatpost, shim and seatpost clamp off the bike degreased and regreased the same then reassembled, but the creaking sound is still there, its is worse whenever i am going up hills and remain seated, but if i get out of the saddle silence, any help please
https://www.instagram.com/seanmcgrathphotography/
Trek Domane SL7 GEN4
Planet X RT58
Cannondale CAAD 10 2012.
Pain.. Is weakness leaving the body.

HATING LIFE-CYCLES FROM 2011

Comments

  • bottom bracket bearing?

    mine only creaked while pedalling seated (before it got really bad!)
  • kettrinboy
    kettrinboy Posts: 613
    my alu framed Giant FCR2 creaks and ive found its actually the seat but i,ll just put up with the noise until i get a new seat,but it helps to keep the seatpost and shim clean.
  • amaferanga
    amaferanga Posts: 6,789
    Did you grease inside and outside of the shim?
    More problems but still living....
  • Wappygixer
    Wappygixer Posts: 1,396
    It could be anything.
    I had a creak on my Kuota and it only creaked out of the saddle, it turned out to be the seatpost surprisingly.
    Check the normal stuff like crank boltd, chainring bolts, headset, bars, stem and wheels.Also try the saddle clamp on the seatpost
  • desweller
    desweller Posts: 5,175
    Could be saddle rails where they are mounted to the seatpost or where they run in the saddle itself.
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  • ride_whenever
    ride_whenever Posts: 13,279
    saddle rails or the seatpost clamp, also the seatclamp round the frame.
  • +1 for BB.

    My bike was creaking recently, thought it was the seat post... it was the BB.
    Serviced and tightened, now quiet as a mouse!
    JM
  • Sure it's not your hips or knees ?




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  • amaferanga
    amaferanga Posts: 6,789
    I seem to recall some creaking on my Giant SCR2.0 that I was convinced was coming from the seat post or BB area, but was infact coming from the gear or brake cables where they curved round the headtube. Weird, but true.

    I did of course have the infamous Giant creaking seatpost as well.
    More problems but still living....
  • bikeit65
    bikeit65 Posts: 995
    Thanks to you all.
    Can you buy a seatpost shim to fit which is not a Giant branded one?
    https://www.instagram.com/seanmcgrathphotography/
    Trek Domane SL7 GEN4
    Planet X RT58
    Cannondale CAAD 10 2012.
    Pain.. Is weakness leaving the body.

    HATING LIFE-CYCLES FROM 2011
  • simon johnson
    simon johnson Posts: 1,064
    My titanium frame with carbon seatpost creaked like hell, a few sprays of cheap hairspray on the seatpost silenced it immediately...why, I don't know.

    Probably worth a try before time and money's spent taking it apart and fitting new parts
    Where\'s me jumper?
  • bikeit65
    bikeit65 Posts: 995
    If i am to apply hairspray do i need to apply it between the seatpost shim and bike frame, and between the post and shim as well?
    https://www.instagram.com/seanmcgrathphotography/
    Trek Domane SL7 GEN4
    Planet X RT58
    Cannondale CAAD 10 2012.
    Pain.. Is weakness leaving the body.

    HATING LIFE-CYCLES FROM 2011
  • simon johnson
    simon johnson Posts: 1,064
    You may as well, I did. Hope it works for you. :D
    Where\'s me jumper?
  • JohnnyAllez
    JohnnyAllez Posts: 785
    Hairspray fixed the creak on my carbon post/carbon frame Spesh Roub :)

    Since bought a sachet of Richey carbon assembly paste from CRC to try next time it does it or next time I have the seatpost out for any reason.
    Jens says "Shut up legs !! "

    Specialized S-Works SaxoBank SL4 Tarmac Di2
  • simon johnson
    simon johnson Posts: 1,064
    Yeah, and the cheaper the better IMO try Bristow's or Silvrikin, even Elnette, or any old- school hairspray provided it's aerosol.
    Where\'s me jumper?
  • HonestAl
    HonestAl Posts: 406
    Can't see in your postings, but have you used the high friction grease you'd normally use on carbon post in a carbon frame? Not suggesting you need it nornally, in an Al frame, but If the post is slightly eccentric it might be enough to fill any minscule gap that might be causing the creak. Another possible idea would be to wrap the post in a single layer of aluminium foil. That'll add 100microns to the diameter of the tube, which agsain, might be enough.

    If it IS the seatpost!!! I've had a couple of bikes with strange creaks, both of which were the seatpost.
    "The only absolute statement is that everything is relative" - anon