Creaking levers/bars/stem

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doug5_10
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Creaking levers/bars/stem

Postby doug5_10 » Sun May 26, 2013 18:07 pm

I've had this for years and couldn't find much on search. Not really a major issue, just gets a bit annoying. Creaking noise occurs when on the hoods and applying power out of the saddle i.e. mainly climbing. All contact surfaces are clean and everything sufficiently tightened up. Can this happen if things are over-tightened? ITM Alu bars and carbon wrapped stem (both fairly basic) and Tiagra 4400 levers.
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No Sweat
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Re: Creaking levers/bars/stem

Postby No Sweat » Sun May 26, 2013 18:44 pm

Creaks often are not generated from where they appear to come.... Have you checked the bottom-bracket / crank-B/B interface (if not an external B/B) and pedal-crank interface?

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doug5_10
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Re: Creaking levers/bars/stem

Postby doug5_10 » Sun May 26, 2013 19:00 pm

No, definitely the cockpit area, I can generate the noise by pushing down hard on the hoods at a standstill. Bike also had a recent full strip down which didn't cure it (hence knowing all mating surfaces are clean and everything is tight)
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No Sweat
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Re: Creaking levers/bars/stem

Postby No Sweat » Sun May 26, 2013 20:04 pm

Clutching at straws maybe, but are there any 'occult' cracks that only open when you apply leverage (and hear the creaking)? - do you have an able assistant who could take a look round whilst you apply pressure?

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Ed J
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Re: Creaking levers/bars/stem

Postby Ed J » Sun May 26, 2013 20:38 pm

Almost always the stem bolts. Cover them in grease.

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doug5_10
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Re: Creaking levers/bars/stem

Postby doug5_10 » Mon May 27, 2013 14:59 pm

Greased the bolts clamping the bars and the steerer tube, also the lever clamping bolts with no real joy. As its being going on so long I'm starting to think its just the bars flexing. They are cheap ITM Alu Super Europa 2 and I can feel slight give in them under pressure. That and they are not over-sized, so the stem clamping area is relatively small.
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Ed J
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Re: Creaking levers/bars/stem

Postby Ed J » Mon May 27, 2013 15:03 pm

Are they undersized bars? As in not the modern 31.8?

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doug5_10
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Re: Creaking levers/bars/stem

Postby doug5_10 » Mon May 27, 2013 15:20 pm

Yep, they're the older 25.4 standard, not over-sized 31.8
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keef66
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Re: Creaking levers/bars/stem

Postby keef66 » Tue May 28, 2013 13:14 pm

I remember in the 70s my alu bars used to creak like mad if I was heaving on them. Probably a combination of skinny bars and a quill stem with a single clamp bolt. Still going strong when the bike was nicked in the 80s. Modern stuff seems a lot stiffer / virtually silent by comparison.


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