seatposts

shming123 said:

can anyone recommend a good carbon seatpost? i was considering either an FSA or a DEDA Blackstick. What are good ones that don't slip lower? Also, i have a Trek 5000, 56cm, how do i know what size to get? there are smaller numbers, 27.2, 31.6, or something like that, and then like 250mm, 300mm, ... how do i know what size i need? thanks.

Hard to go wrong if you stick with trusted labels. The Deda is certainly popular among guys I ride with, but I know a few guys with Felt bikes as well, and they're stocked with nice FSA posts.

Personally, I like USE Alien posts, but not because they're superior -- only because they're a bit unusual. And, it happens, among the lightest on the market.

Regarding sizing, the 27.2 and 31.6 figures you mentioned are a few common seatpost diameters. I don't know what the Trek takes, but ask around, check the manual, or call a Trek-dealing LBS. Should be an easy discovery. The other consideration is length (250mm and 300mm are common options). Generally, your typical road bike rider with a standard geometry frame (like your Trek) can take a fairly short one... but again, to be sure, there are a few things to look into. Most important is your frame's minimum seatpost insertion level -- the amount of post that needs to be inserted into your seat-tube for safety's sake. You can do a little measuring with your current post and determine what ranges of available lengths will cover your needs.

good luck * happy riding