|
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Sliding Carbon Seat Post in Carbon Fiber Frame
I am sure this has been posted before, but I am having a slow slippage of
the seat post down the seat tube resulting in a changed riding position. I have already tightened the seat tube clamp to the max. Any suggestions for a friction solution to keep the seat post in place without ruining the post or the seat tube? |
Ads |
#2
|
|||
|
|||
Sliding Carbon Seat Post in Carbon Fiber Frame
KnowWhen2HoldemKnowWhen2Foldem wrote:
I am sure this has been posted before, but I am having a slow slippage of the seat post down the seat tube resulting in a changed riding position. I have already tightened the seat tube clamp to the max. Any suggestions for a friction solution to keep the seat post in place without ruining the post or the seat tube? yes, remove the grease. if it's not greased, there's something preventing the clamp from tightening properly. |
#3
|
|||
|
|||
Sliding Carbon Seat Post in Carbon Fiber Frame
"KnowWhen2HoldemKnowWhen2Foldem" wrote: (clip) Any suggestions for a friction solution to keep the seat post in place without ruining the post or the seat tube? ^^^^^^^^^^^^^^^^^^^ Someone else may offer a more elegant solution, but this works, it's simple and cheap: a hose clamp around the seat tube. |
#4
|
|||
|
|||
Sliding Carbon Seat Post in Carbon Fiber Frame
There is no grease.
The carbon post just seems to slip against the carbon seat tube with the allowable torque on the clamp. Didn't someone post about some sort of friction spray-on material that didn't result in the seat post bonding to the seat tube? "jim beam" wrote in message t... KnowWhen2HoldemKnowWhen2Foldem wrote: I am sure this has been posted before, but I am having a slow slippage of the seat post down the seat tube resulting in a changed riding position. I have already tightened the seat tube clamp to the max. Any suggestions for a friction solution to keep the seat post in place without ruining the post or the seat tube? yes, remove the grease. if it's not greased, there's something preventing the clamp from tightening properly. |
#5
|
|||
|
|||
Sliding Carbon Seat Post in Carbon Fiber Frame
Around the seat tube, or the seat post at the point where the post enters
the seat tube? "Leo Lichtman" wrote in message ... "KnowWhen2HoldemKnowWhen2Foldem" wrote: (clip) Any suggestions for a friction solution to keep the seat post in place without ruining the post or the seat tube? ^^^^^^^^^^^^^^^^^^^ Someone else may offer a more elegant solution, but this works, it's simple and cheap: a hose clamp around the seat tube. |
#6
|
|||
|
|||
Sliding Carbon Seat Post in Carbon Fiber Frame
On Wed, 10 Oct 2007 00:59:41 -0400, "KnowWhen2HoldemKnowWhen2Foldem"
wrote: There is no grease. The carbon post just seems to slip against the carbon seat tube with the allowable torque on the clamp. Didn't someone post about some sort of friction spray-on material that didn't result in the seat post bonding to the seat tube? Dear NoHold, This stuff was mentioned in a similar thread with the caution that the poster had no idea if it worked: http://www.excelsports.com/new.asp?p...orCode=RITCHEY Cheers, Carl Fogel |
#7
|
|||
|
|||
Sliding Carbon Seat Post in Carbon Fiber Frame
On Oct 9, 11:02 pm, "KnowWhen2HoldemKnowWhen2Foldem"
wrote: I am sure this has been posted before, but I am having a slow slippage of the seat post down the seat tube resulting in a changed riding position. I have already tightened the seat tube clamp to the max. Any suggestions for a friction solution to keep the seat post in place without ruining the post or the seat tube? I've found simply cleaning the post and tube with alcohol works very well. Clean both until a white paper towel comes away clean. I found a noticable improvement compared to a "never greased" installation. But the best I found is the Tackx carbon assembly compound. There are other brands (Ritchey, Syntace, etc.) that might also work. I also tried (and found not to work): Rosin (from a violin store) hair spray (either assembled wet or waiting and assembling dry) SoftScrub various tubes of "stuff" from the auto parts store (gasket sealers, etc.) |
#8
|
|||
|
|||
Sliding Carbon Seat Post in Carbon Fiber Frame
On Oct 9, 10:02 pm, "KnowWhen2HoldemKnowWhen2Foldem"
wrote: I am sure this has been posted before, but I am having a slow slippage of the seat post down the seat tube resulting in a changed riding position. I have already tightened the seat tube clamp to the max. Any suggestions for a friction solution to keep the seat post in place without ruining the post or the seat tube? Tacx makes some 'stuff' for carbon/carbon applications to prevent what you are seeing. See your bike shop or call us..we have it for sale. |
#9
|
|||
|
|||
Sliding Carbon Seat Post in Carbon Fiber Frame
My wife started having this problem on her Trek bike. After a couple of mechanics "re-tightened" it for her I noticed that the clamp was not totally seated on the tube. It was a very small gap - easy to overlook - but when I re-positioned it it held fine with the proper tightening. I'd check that. -- robbielink ------------------------------------------------------------------------ robbielink's Profile: http://www.trianglecycling.com/member.php?userid=374 View this thread: http://www.trianglecycling.com/showthread.php?t=23675 |
#10
|
|||
|
|||
Sliding Carbon Seat Post in Carbon Fiber Frame
On Oct 10, 12:01 am, "KnowWhen2HoldemKnowWhen2Foldem"
wrote: Around the seat tube, or the seat post at the point where the post enters the seat tube? "Leo Lichtman" wrote in message ... "KnowWhen2HoldemKnowWhen2Foldem" wrote: (clip) Any suggestions for a friction solution to keep the seat post in place without ruining the post or the seat tube? ^^^^^^^^^^^^^^^^^^^ Someone else may offer a more elegant solution, but this works, it's simple and cheap: a hose clamp around the seat tube.- Hide quoted text - - Show quoted text - Hose clamp around the seatpost where it enters the seattube. Just above the clamp. It acts as a stop to prevent the seatpost from going into the seattube. Saw this on an Orbea Orca on Hell Week 2006. Unelegant for a many thousand dollar bike. But effective. Hose clamp does not have to be super tight to keep the post from slipping down. This would be a cheap and easy and quick solution until you try those various friction sprays. |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Carbon seat post stuck in Carbon frame | Steve | Techniques | 14 | September 9th 06 11:46 PM |
Carbon Fiber base and seat post? | maflitto | Unicycling | 2 | April 16th 06 09:58 AM |
Tip for preventing water entry at seatpost interface, carbon fiber post and/or frame | Brian Ray | Techniques | 17 | January 30th 05 09:12 PM |
FA: FSA Carbon Fiber Seat Post-K-Force Lite | Bikeeron | Marketplace | 0 | January 10th 05 10:55 AM |
Seat Post Binder Torque for Giant TCR Carbon Frame?? | David Jones | Techniques | 1 | March 7th 04 08:16 PM |