Machka 

Yep ... mine did that a couple days before I set off for Australia and a 3 month tour. Thank goodness it happened then and not in the middle of the tour! But I'll never go back to a carbon seatpost again.

Waxbytes

Is that why you had your forks changed on Machak?

Machka 

I actually changed my forks several months before my seatpost cracked, but yes, the possibility of those forks cracking was one of the reasons why I changed them. The other reason was because I wanted to install a front rack and the carbon forks had no way of attaching one.


Good memory Waxbytes!!

mlts22 

After seeing this, I'm now a bet leery of anything CF made now, be it seatposts, frames, forks, or cranks. For example, bikes which have CF frames which get nicked by chain slap a bunch of times get me wondering about frame failure.

I know I'm totally wrong on this, but this gets me wondering how CF is, as a general bicycling material, handling the usual dents, scratches, and other mishaps of life. I did some searches on this, found some results that showed CF is darn strong in a number of uses, but I'm still wondering if CF can just outright fail sometime when the microscopic crack amount gets too high.

ghettocruiser

I've mentioned on another thread that I have had some instantenous, disasterous failures of steel and aluminum parts over the years. Hence, I've got no particular confidence issues with carbon.

cycle17

Uh..nope. The posts themselves are all CF on the Trek/Bontrager ones. From the Select to the Race XXX Lite. I've had a select, race x lite and race XXX lite. All CF except for the actual clamping part that hold the seat to the post.

margoC

I just got an easton ec70 seatpost to give me more setback with my brooks. It did the trick so I hope nothing happens to it. I have a campy chorus on my other one but I think they may be carbon now as well, I'm not sure.

I need a seatpost with as much setback as the ec70, is there any not made of carbon?

wagathon

FSA has a lot of setback and is doesn't look bad on a road bike if you like to use a saddle bag as the bag will neatly fit into the arc of the setback.

my58vw

Agreed 100%

cs1

+1
The difference in weight between a Thomson and carbon is minimal, so small it has to measured in grams. The difference in strength is amazing. I've never seen posts "I broke my Thomson." It just doesn't pay to save an ounce on such a critical area. I've been switching all my seatposts to Thomsons. They work great.

Tim

Mariner Fan

The EA70 is identical to the EC70 except it's made of aluminum. I use that on my Lemond since I'm in the same boat as you needing a lot of setback.