The Brompton creak

Discussion in 'Folding Bikes' started by doginabag, 17 May 2018.

  1. doginabag

    doginabag Senior Member

    I know this has come up here and all over the interweb, but I don't think I have ever found a conclusive answer. Does anyone know the source of the common creak that's associated with peddling, particularly down stroke on the left peddle?

    I have checked and double checked, all bolts are done up tighter than a nuns chuff, but it still is sounds like Katie Price's bed springs!
  2. mjr

    mjr Comfy armchair to one person & a plank to the next but I'd check left crank, left pedal into crank and especially left pedal bearings first which shouldn't be done up too tight.
  3. ianrauk

    ianrauk Tattooed Beat Messiah

    I may be wrong but I think @User10571 had a creak problem with his Brompton.
  4. gizmo1994

    gizmo1994 Active Member

    Mine creaks when the left pedal is upside down. Flip it over then the creaking stops. Swap them out for SPDs on weekends and no creaks at all.
    Heltor Chasca likes this.
  5. chriscross1966

    chriscross1966 Senior Member

    Probably the non folding pedal
  6. Fab Foodie

    Fab Foodie hanging-on in quiet desperation ...

    Mine rattles like a skeleton in a dustbin...
    You don’t then hear the creaks.
  7. User10571

    User10571 Guest

    By a process of A Lemon Nation, that creak turned out to be the luggage block.
    Removing it and re-fitting it banished the creak.
    It didn't make much sense to me either.
    chriscross1966 likes this.
  8. CopperBrompton

    CopperBrompton Bicycle: a means of transport between cake-stops

    A creak on a Brompton is usually the suspension block – just unscrew, grease and reassemble.
  9. Kell

    Kell Über Member

    When mine developed a creak, everyone told me it was definitely the suspension block, but mine turned out to be the allen bolt on the drive side of the rear frame. It can come loose a tiny bit and meant there was some lateral play in the rear triangle. Cured it by tightening it - though you have to remove the chainring to get at it.

    This was my bike:

    Although as mentioned above, I probably couldn't hear the creaks these days because of the rattling from the rear mudguard.
  10. OP

    doginabag Senior Member

    Thanks everyone. I meant to take a look at this on Sunday, but enjoyed a stag do a little too much on Saturday and couldn't face it!

    This sounds exactly the same, so will make it my first place to look. Cheers. :smile:
  11. Kell

    Kell Über Member

    Just get the rear off the ground and see if there's any play in it before committing to taking anything apart.
  12. OP

    doginabag Senior Member

    Never did find the source of the creaking sound, certainly nothing loose.
    I was certain that it wasn't the suspension block ad it only happened when peddling. If i free wheeled and bounced the bike there was no noise.

    But today finally got round to another little job i have been to do and fot a couple of jubilee clips around tje suspension block

    The noise is gone!
    chriscross1966 likes this.
  13. cheys03

    cheys03 Well-Known Member

    Unfortunately, experience tells us it’ll be back!
    chriscross1966 likes this.
  14. Kell

    Kell Über Member

    Actually, what my experience has taught me is that you'll get exactly the same creak, only this time it will be something else that will take weeks to pinpoint.
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