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Help. Carbon Seatpost clicking(7 posts)

Help. Carbon Seatpost clickingBigRingKing
Apr 5, 2002 2:23 PM
My carbon aero seatpost which came fitted to a 2002 Giant TCR1 is driving me crazy. Each pedal stroke produces a click at the frame insertion point. Either holding the front and rear of the saddle and rocking it or holding only the seatpost and rocking it produces the sound. So it is definitely produced at the frame insertion point. It produces the sound whether the post is greased or totally clean. The rubber dirt seal is clean and both clamping bolts are torqued according to specifications supplied with the bike. ?? Any ideas.
re: Help. Carbon Seatpost clickingronvermeeren
Apr 6, 2002 9:34 AM
Replace it with a new non carbon version... for instance the ITM Millennium. I have this seatpost on two different bikes and have no problems with them, stiff and no cracking.
I do hear that now and then that carbon seatpost click...

Success,
Ron
re: Help. Carbon Seatpost clickingsimstress
Apr 6, 2002 6:52 PM
Are you a big rider? Out of my four riding mates who have TCR2's, the only fellow who makes the seatpost creak/click is around 185 lbs. The other three are < 150 lbs.
re: Help. Carbon Seatpost clickingzeke
Apr 6, 2002 10:24 PM
is the seatpost cracked by any chance?
Latest Update. Not post but frame at faultCrank
Apr 7, 2002 8:29 PM
Hi all
Thanks for your replies. I decided yesterday to swap the post and seat with another from one of my other bikes. The creak / clicking sound is still present. I went back to the LBS where I purchased the bike. They repeated my tests with the conclusion that it necessitates a warranty / frame replacement. They surmise that the noise is possibly created by the top tube seat tube junction rubbing beneath the weld.?? I weigh 165 pounds but the noise can be produced by merely placing your hand on one end of the seat.
Latest Update. Not post but frame at faultRolf Sindoe
Apr 7, 2002 11:27 PM
I once had a slightly similar problem. The solution was simple: Pour quite a lot thin oil into the seat-tube and make sure the oil gets to the main tubes and the bottom bracket and seat-stay. If your BB is partly open the oil will get out by it self, otherwise let it stay in the frame for the night and then pour it out the following day. - This "cure" stopped clicking noises in my frame.
re: Help. Carbon Seatpost clickingProspectus
Apr 7, 2002 11:54 PM
For someone who had the same problem with more or less the same bike, here is my experience.

The problem IMO is caused by the connection between the seat-tube and the shim inside. It has nothing to do with whatever seatpost you might use although using an aluminium seatpost would cause greater resonation, and hence a louder clicking noise.

There is a little space between the shim and the seat-tube. Check that there aren't any small bits of metal in that space.

Finally, my solution was to stuff some teflon tape in said gap (not between the seatpost and the shim - I know it sounds complicated). Also, put some of said tape between your seatpin collar and the seat-tube. That provides a high damping effect.