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Discussion Starter · #1 · (Edited)
I have ridden the Specialized Tarmac I bought five times now. I like the ride of it a lot and am pleased that I am riding and that I bought it.

I rode Sunday evening and, after I got home, I thought I heard a bit of a creaking sound from the saddle or seatpost and thought I would look them over too while I was at it. I thought I saw a small line parallel to the ground in the right rear extended ear of the Specialized Pave FACT w/Zertz insert carbon fiber seatpost (pic of that type seatpost below).

I looked closer and used a fingernail to feel for a split. I could feel a difference from the smooth rest of the cf on the seatpost, so I got a flashlight out to take a closer look. It looks as if there is a jagged small surface crack around the right ear on the seatpost.

I called the shop Tuesday (closed on Monday) where I bought it and they said don't ride it and to bring it in. They said if it was cracked it would definitely be covered under warranty and that they would replace it. I am 100 miles away, so I told them I would rather bring it in and replace it with a Thomson Elite aluminum seatpost. They didn't have one in stock, but said they could order one and it should be in this week. They had some other seatposts in stock, both aluminum and carbon fiber, but I wanted a Thomson.

I told them I would check the other shops in town and, if they had one, would buy it and come and see them. None of the other shops I called had one on stock, so told the shop I would just get one shipped to me at home and would save a 200 mile round trip and bring the old one back when I made a trip up that way. They said that was fine, so tonight I changed over the seatpost.

I was kind of concerned when I was looking at bikes with carbon fiber seatposts (and to a lesser degree cf fork steerers) because I had ridden Thomson seatposts for many years with not a problem. I also wondered about the durability of cf seatposts, but all 3 of the shops said a cf seatpost would be fine for me at my weight (I am 205 pounds) and that they rarely saw problems other than over tightening in the seat tube. I know lots of folks have ridden cf seatposts with no issues (probably lighter folks!) but I am going to stick with Thomson from here on out.
 

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... I think there is room for concern when using traditional collars on CF posts... I suspect that most folks and even shops are hard pressed to actually use a torque wrench for their installation... I do know however, that there are a few designs out there that lessen stresses on a CF post (Campy makes one).

I've only got two bikes with CF posts and so far... so good.
 

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huh, I've been riding the same specialized carbon post that came with my Roubaix (elite 04, purchased in early 05) and I"ve swapped saddles to a Selle Italia with Carbon rails... I"m about the same weight as you (about 10 lbs. more when I started), and I've had No issues at all... not that any of this really helps your situation, or would change your mind about getting the Thomson.
 

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I've had several "paves" in the last few years. The only problem I ever had with any of them, was me tightening the seat tube clamp too much and causeing damage to the post. My stupid mistake. This sounds like as cut and dry QC issue.
 
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