Centaur BB creaking @ 700km

Discuss light weight issues concerning road bikes & parts.
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Devon
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by Devon

So my Centaur BB started creaking on tonight's ride. Only got 700km on it. Fitted to a Centaur Carbon crankset with 53-39 rings. Creaking less or non-existent when climbing. Any ideas? Fitted it myself, too tight maybe?
Last edited by Devon on Wed Oct 16, 2013 8:29 pm, edited 1 time in total.
Campagnolo; because it's a bicycle, not a fishing rod.

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MajorMantra
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by MajorMantra

What BB? Power Torque? Threaded cups or press fit?

by Weenie


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Devon
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by Devon

Threaded & Power Torque; it's this years model.
Campagnolo; because it's a bicycle, not a fishing rod.

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MajorMantra
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by MajorMantra

If you're sure it's the BB, strip, grease all metal to metal interfaces and reassemble. Most likely explanation would be cups moving in frame because of insufficient torque. I assume the wave washer is correctly installed?

When you say it doesn't do it when climbing, does that mean standing? If so I'd strongly suspect your saddle/seatclamp area rather than your BB. Other possible sources of creaks are QR/hub/frame interfaces, stem bolts, headsets, pedals etc. etc.

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bikerjulio
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by bikerjulio

One time I'd just finished putting a bike together. Went for a ride and stopped part way through because of a horrible "BB" noise. Abandoned altogether and went home on the subway, that's how bad the noise was.

It was a pedal.
There's sometimes a buggy.
How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

http://www.youtube.com/watch?v=GekiIMh4ZkM

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Devon
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by Devon

Seated and standing. It only creaks when the cranks are turning.

I initially thought pedals too, bikerjulio, however when pedalling with only one foot the noise continues.

As a side thought I did adjust my seatpost height recently, I will check it just to humour the possibility, but it seems bizarre.
Campagnolo; because it's a bicycle, not a fishing rod.

doozer
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Location: fragglerock

by doozer

i had this on an older ultratorque BB. Used blue loctite on the cup threads which eliminated the problem. I think there is an online guide on how to do it. Just do a google

dooz
Dance you cares away, worries for another day, dance your cares away, down at fragglerock.

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Devon
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by Devon

Ah, that actually gives me a thought. It was a brand new BB and an older frame; so the threads may be worn. Therefore in theory, Loctite would do the trick...
Campagnolo; because it's a bicycle, not a fishing rod.

RTW
in the industry
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by RTW

Had this too. It was dirt on the dropout. Only creaked when pedalling.

rijndael
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by rijndael

RTW wrote:Had this too. It was dirt on the dropout. Only creaked when pedalling.
I spent a few hours taking my cranks off, removing the BB30 bearings, cleaning, and greasing it - two times! It was the rear skewer/dropout and it only squeaked when I was pedaling.

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Devon
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by Devon

Bizarre! I will give the bike a thorough clean, thanks.
Campagnolo; because it's a bicycle, not a fishing rod.

rijndael
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by rijndael

For my issue, it was the torque that is applied during the pedaling that caused some rotation/movement in the dropout - even though the QR was tight. If you're not pedaling, there's no torque, so there was no sound.

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Devon
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by Devon

That's exactly the conclusion I came to re:the dirty dropout theory.
Campagnolo; because it's a bicycle, not a fishing rod.

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MajorMantra
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by MajorMantra

You can apply grease to the dropout as well. I like greasing things.

by Weenie


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Devon
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by Devon

Does that not attract A LOT of dirt?
Campagnolo; because it's a bicycle, not a fishing rod.

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