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Mysterious ticking/creaking seatpost: Why?

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Mysterious ticking/creaking seatpost: Why?

Old 07-01-13, 01:09 PM
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Mysterious ticking/creaking seatpost: Why?

My 2010 Specialized Roubaix Expert developed an annoying ticking/cracking sound. I found that the noise was coming from the frame where the seatpost is deeply inserted (carbon seatpost/carbon frame). I took the seatpost out, wiped it down and re-installed it. Voilà, the noise gone.

While I am certainly glad that the noise is gone, if anyone could enlighten me as to what would cause such a noise, I would really appeciate it.

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Old 07-01-13, 04:23 PM
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As the tubing flexes the inner tube (the post) slides slightly within the outer (seat tube). You need to either grease it so it slips easily and silently, or use something with enough traction that it doesn't move at all. This sort of thing happens with all tube in tube assemblies.
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Old 07-01-13, 07:56 PM
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Applying some carbon assembly paste will help to keep the seat post and tube from creaking and permit clamping the post securely without excessive clamp bolt torque.

A torque wrench is your friend when you own a carbon bike.
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Old 07-02-13, 06:37 AM
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Even greased seatposts will creak in such a manner. They get dirt and sand slung into them by the rear wheel, and need to be cleaned and re-lubed periodically. It's just a fact of life.,,,,BD
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