The Brompton creak

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!
 

mjr

Comfy armchair to one person & a plank to the next
http://www.sheldonbrown.com/creaks.html#bottom but I'd check left crank, left pedal into crank and especially left pedal bearings first which shouldn't be done up too tight.
 

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:

View: https://www.youtube.com/watch?v=0RYbrBmqh0U


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

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!

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:

View: https://www.youtube.com/watch?v=0RYbrBmqh0U


Although as mentioned above, I probably couldn't hear the creaks these days because of the rattling from the rear mudguard.
This sounds exactly the same, so will make it my first place to look. Cheers. :smile:
 
OP
doginabag

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!
 

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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