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3 comments
This probably needs a link to Peter's crank thread. https://road.cc/content/forum/psa-sometimes-creak-needs-be-investigated-...
Interesting, but I'd add:
Go at it in this order: safety, ease, diminishing probability.
On carbon frames or components, check for cracks first. This is for safety and can save of time - replacing a carbon handlebar can be faster than tracking down a creak which is only known to be at the front end. You can't prove that there are no crack issues but the inspection doesn't take long.
If a long seat post is set right at the bottom of its range, it may interfere with the seat tube (there's a bottom stop on one frame I worked on). This can creak even when out of the saddle.
Check QRs as well as all the bolts and try swapping components if possible to narrow things down (e.g. if you think the problem is the front wheel, swap with a friend and see if the noise changes or goes away). Even get someone else to ride the bike if the noise might be shoes or cleats or fit- specific; I found the seat post noise above by test riding the bike as my legs are a bit longer than the owner's and the noise vanished when I put the saddle up).
BB wear might be better and more easily checked with the chain off but the chainset still in place - you can spin the unladen cranks and get a good feel for rumbling and play.
I'd also (and perhaps this is ocd or lost in the edit) torque bolts in diagonal order, getting them all tight-ish but not fully torqued, and then finishing in diagonal order.
My carbon Vitus had been suffering with terrible creaking from the BB, so I replaced it with an Wheels Manufacturing thread together bb. Stopped creaking for a few miles then started again. Refitted with a 'better' (thicker) grease. Same result. Then went down the loctite 609 route - still creaked. Hmm. Greased, pushed and pulled the skewers, pedals, seatpost, saddle, cassette, wheels cleats, pedals and handlerbars to ensure they all couldn't be the source of the infernal creaking. They weren't.
So, finally decied to buy a Hambini BB in a last ditch attempt to fix creaking without resorting to purchasing a new frame...and...silence...
...for about 30 miles and then worse than ever. I did notice though that my headset was a bit notchy.
A month later convinced wife to let me order a new bike on the C2W scheme (any frames i wanted costed the same at retail as a bike on C2W). While waiting for it to arrive I decided to replace the Vitus' headset bearings - why not? One hour ride: no creaking. Three hours commuting: no creaking. Wife's face - no smiling.
Hoping creak will return so I can stop getting the hard stares.