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Carbon v. Aluminum seatpost(13 posts)

Carbon v. Aluminum seatpost-bob
Sep 4, 2003 6:25 AM
I'm debating plunking down the money for a carbon seatpost for my road bike. I've used a carbon seat post on a hard tail mtb and it makes a huge difference in the ride. However, with a road bike there is so little seatpost extended (vs. a mtn bike) that carbon might not make much of a difference over aluminum. Will I notice a $100 difference in the ride?
I just switched to a carbon seatpost...config
Sep 4, 2003 6:33 AM
...2 weeks ago and I couldn't really tell the difference although my road bike already has carbon seatstays. That may be why. I'm also getting a slight creak from the clamp assembly on the carbon seatpost. Hopefully it'll go away once I get it tightened enough.
I just switched to a carbon seatpost...-bob
Sep 4, 2003 6:38 AM
Which one did you get and why? I have an easton EC 70 on an mtb but it has too much set back to use on my road bike. I'm looking for some setback but not too much.
I got the Easton CT2config
Sep 4, 2003 6:45 AM
Bought it on e?ay. I actually wanted the Thompson but never got the one I bought off this one guy. It is wickedly light though.
re: Carbon v. Aluminum seatpostdirthead
Sep 4, 2003 7:26 AM
I have a USE Alien Carbon seatpost on my Fondriest. Haven't ridden this bike with a different post, so I don't know if the carbon post makes a difference or not. The Fondriest has carbon seatstays, and the ride is very smooth with lots of dampening of road chatter. I would say that the post will make a little difference in the ride. The Alien is a good post...very light, no setback, strong...but the clamp sucks. It is probably the hardest clamp mechanism to adjust of any post on the market. Once you get the seat set in the proper position, adjustability really doesn't matter anymore, but it definitely isn't as user friendly as the Thomson clamp.
Cool looks but no diffjtolleson
Sep 4, 2003 7:28 AM
I'm not sorry I got a carbon seatpost. It is just one of those fun "treats" for the bike. But I think that anyone who claims to feel a more forgiving ride is feeding a bunch of hooey (maybe sincerely believed for placebo reasons).

Changes in saddle (rails) or tires could soften a ride, if that's the goal.
Sep 4, 2003 7:29 AM
Carbon posts look cool, but once you're riding the bike, you'll never know whether the post is carbon or aluminuim. Anyone telling you different is experiencing the princess and the pea syndrome. Frankly, I'm suprised it makes a difference on a mtn bike either.
It makes a huge difference on my mtb-bob
Sep 4, 2003 9:10 AM
On my hardtail mtb with a sloping top tube, the EC 70 has alot of exposed post. You can actually see the post flex when I sit on the bike. I'm sure the 1"+ offset head contributes to that as well. It's rather unsettling to be honest. I only use that bike for non-technical ridng or rolling around the neighborhood with my kids.
Size matterspedalAZ
Sep 4, 2003 8:27 AM
I'm in the middle of a custom road bike build. The seat tube OD is 34.9mm (ti), which would accommodate a 31.6mm seat post, but my frame builder is placing a reducer in the clamp area so that the seat post size will be 27.2mm. One reason for this is that the 27.2 carbon post they make (Maxm) is much more compliant than the otherwise identical 31.6 (like the one on my MTB).

Length matters, too; my frame has compact geometry and will have a lot of seat post showing (225mm).
So get a 25mm with a shim. (nm)LC
Sep 4, 2003 9:06 AM
re: Carbon v. Aluminum seatpostLeroy
Sep 4, 2003 8:34 AM
I have a use alien carbon seatpost on my #3 bike a steel gios megalite, a thompson elite on my #1 cannondale, and a campy daytona steel post on my #1A, Gios compact pro century bike. I originally had the USE on the cannondale, figuring it would 'smooth out' the ride that was already fine as it was. I got tired of trying to dial the damn thing in - it's impossible to adjust easily on the bike. So I moved 'em around. I can't tell ANY difference. It's probably my fat butt that filters out the differences. The carbon post looks good, but then so does the thompson elite.
fashion statementterry b
Sep 4, 2003 8:47 AM
and in my experience that's it. I've got an Alien, a Selcof and an Easton - very nice eye candy, no material effect on my riding experience whatsoever.
Look Ergo IIIMoney D
Sep 5, 2003 1:23 AM
I got a Look Ergo 3 on ebay for less than $100 delivered. This is one of the coolest accessory items for a bike that I know of. It has a huge amount of fore/aft play to get the perfect position. It has markings on the post so you know your height and can check for slippage. I don't know about dampening, but it sure looks cool.