Re: campy record post slips

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Subject: Re: campy record post slips
Posted by: Al on December 19, 2003 at 06:27:27:
In Reply to: Re: campy record post slips posted by CBASS on December 18, 2003 at 14:30:15:

Message:
>>>>I have a Campy record carbon seat post that slips in the frame. The frame is a new Mondonico Foco and has been faced/reamed. The inside of the seat tube is clean and measures 27.2. No grease has been added to either post or seat tube. Ive already broken a well greased Campy seatpost bolt. My local LBS said that I might need to switch posts. That sucks when you have a $100+ post that worked great in another frame. Any suggestions?
>>>Have you tried the frame with a "regular" aluminum post OR a different carbon seat post just to isolate the problem?
>>>Is it possible that whoever faced & reamed the seat tube over did it?
>>>If so, all is not lost -- BUT, you'll want to run the quick test with another seat post first.
>>>If another 27.2 seatpost ALSO slips, then the problem is with the seat tube. Tsk. Tsk.
>>>The fix will cost you about $5 and a minimal amount of time ... I'll spare you the details, for now.
>>>
>>If you want to use the post, you can use the old aluminum beer can shim trick. Just take an aluminum can, cut out a section to wrap around the post without overlapping, insert into frame. If there is too much shim, just reduce its length until it works. A tried and true method. Also works great for crown races that have an i.d. slightly larger than the crown race seat o.d. I think the thickness of the aluminum can is approx .1mm.
>Thanks for the info. I have tried an older aluminum post and it holds fine. I was tryng to avoid the beer can shim method, but it has worked fo me in the past. BTW is said my frame was reamed and faced not just the seat tube.
When you say the older, aluminum post holds fine, do you mean to say that you actually rode the bike with the aluminum post (for a few miles or more) OR are you saying it seems to be snug when it is mounted in the frame?
The REAL problem I have is not with the difference between reaming & facing BUT why the guy/girl who prepped the the frame reamed the seat tube at all with anything more than a piece of wet-dry sandpaper!
The beer/soda can shim is too much UNLESS real "damage" was done to the frame during prepping.

Post a Follow Up To This Message

Follow Up Message:

>>>>>I have a Campy record carbon seat post that slips in the frame.  The frame is a new Mondonico Foco and has been faced/reamed.  The inside of the seat tube is clean and measures 27.2.  No grease has been added to either post or seat tube. Ive already broken a well greased Campy seatpost bolt.  My local LBS said that I might need to switch posts. That sucks when you have a $100+ post that worked great in another frame.  Any suggestions?

>>>>Have you tried the frame with a "regular" aluminum post OR a different carbon seat post just to isolate the problem?

>>>>Is it possible that whoever faced & reamed the seat tube over did it?

>>>>If so, all is not lost -- BUT, you'll want to run the quick test with another seat post first.

>>>>If another 27.2 seatpost ALSO slips, then the problem is with the seat tube.  Tsk.  Tsk.

>>>>The fix will cost you about $5 and a minimal amount of time ... I'll spare you the details, for now.

>>>>

>>>If you want to use the post, you can use the old aluminum beer can shim trick.  Just take an aluminum can, cut out a section to wrap around the post without overlapping, insert into frame.  If there is too much shim, just reduce its length until it works.  A tried and true method.  Also works great for crown races that have an i.d. slightly larger than the crown race seat o.d.  I think the thickness of the aluminum can is approx .1mm.

>>Thanks for the info. I have tried an older aluminum post and it holds fine.  I was tryng to avoid the beer can shim method, but it has worked fo me in the past. BTW is said my frame was reamed and faced not just the seat tube.

>When you say the older, aluminum post holds fine, do you mean to say that you actually rode the bike with the aluminum post (for a few miles or more) OR are you saying it seems to be snug when it is mounted in the frame?

>The REAL problem I have is not with the difference between reaming & facing BUT why the guy/girl who prepped the the frame reamed the seat tube at all with anything more than a piece of wet-dry sandpaper!

>The beer/soda can shim is too much UNLESS real "damage" was done to the frame during prepping.

> 
>

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