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Carbon Fiber Seat Posts, can you feel the ride difference?(22 posts)

Carbon Fiber Seat Posts, can you feel the ride difference?Scummer
Feb 8, 2002 6:19 AM
I'm contemplating buying a carbon fiber seat post to take some of the vibration out of my ride.
(175 lb. ride ti - Litespeed Classic on SI Pro Link Gel saddle). Would I notice the difference between carbon fiber
and the Ultegra Aluminum seat post? I'm not concerned about weight.
I can't tell any differencepmf1
Feb 8, 2002 6:30 AM
I've got a Look Ergo post and some aluminium posts (American Classic, Shimano DA) that I've tried on two different bikes (Litespeed Ultimate, Kestrel 200 Sci) and I cannot tell any difference. I've heard the argument that unlike carbon stays, carbon posts are too short to derive the carbon plushness from. Different wheels may make a bigger impact. Many of the aero wheels with 2-cross on one side and radial on the other ride rougher than a standard 3-cross wheel.

btw -- I think American Classic posts are a great deal. Light weight, easy to install and tune. They're kinda short though.
Neither can Igrandemamou
Feb 8, 2002 6:37 AM
Was trying to decide between Ti Campy and Carbon model. I could tell no difference. I went with Ti it was cheaper and not much more in weight.
Ummm, no. IMHO. The reason to buy one is becausebill
Feb 8, 2002 6:45 AM
they look slick (and they're light). Sounds as if you should have a pretty comfortable ride, anyway. Try different tires? I think that rubber makes a more dramatic difference than anything else.
No, but here's an idea...Elefantino
Feb 8, 2002 6:53 AM
Carbon fiber road bike posts are strictly weight-saving devices. They are too short to provide any vibration relief. (On mountain bikes, that's another story, because the posts are decidedly longer.)

If you are not concerned about weight, I would suggest that there is only one solution for you: a RockShox road suspension post. Now the rest of you, stop laughing! I have one on my OCLV, and the difference has to be felt (or not) to be believed. The posts are adjustable, tunable to your exact weight and riding style. After your initial fiddling, you will find the perfect "give" in the post to take the sting out of the road and keep you pedaling strong.

The weight penalty isn't that drastic (325g vs. 195 for a Dura Ace post and 215 for Look's carbon).

Two of my riding buddies have since made the switch, (one of them bought the MTB post by mistake) and they, too, notice a huge difference. FYI, Performance has them on sale for $99, and no, I don't work for Performance.

FWIW,
Mike
I'm not laughing at allspeedthriller
Feb 8, 2002 7:04 AM
At the suggestion of my local BS pro, I tried out the Rockshox seatpost shock about a year ago. I ride a Cannondale CAD 5 and with Shox seatpost my bike still skims 16 pounds. I'd be willing to bet that my bike is more comfortable on my rear than any standard equipped carbon fiber, titanium or steel road bike out there. I have the best of both worlds, superlight and stiff frame, but yet comfortable up front thanks to a beautiful Reynolds Ouzo Pro fork I added and my Rokshox rear suspension. Guys can laugh at me all they want, but on a Century my bike is a better performer, better climber and more comfortable. I love it. Remember when guys started using carbon forks on road bikes and people laughed at them?
at Nashbar for $79.95 (nm)MisJG
Feb 8, 2002 10:04 AM
and $79.98 at PricePoint (nm)Elefantino
Feb 8, 2002 2:48 PM
re: yescyclopathic
Feb 8, 2002 7:01 AM
but I am riding compact Al frame with long extended post.
It may be not as noticeable on steel/Ti frame with 2" exposed post.

on full size frame I'd probably opt for BCD post. Monocoque constriction looks really cool plus CF head/binder dumps extra vibration.

And last maybe it's time for new seat instead, what do you think?
here are my experiment resultstcr01
Feb 8, 2002 7:07 AM
on my TCR I have tried the stock Giant Carbon Aero post. Did not like it b/c it kept falling on me overa few weeks. Tried several things to correct with no success. It was heavy and the clamp wasn't much to shake a stick at.

Then I tried a Thomson setback version 27.2 dia with a shim. Worked great, awesome clamp, never had crept a millimeter on me. It felt identical to the Giant carbon post as far as ride characteristics.

I tried a Thomson 31.8 dia without the shim. It was ever so slightly stiffer in ride. Plus heavier.

I have stuck with the Thomson 27.2 setback with a shim. It is bombproof.

Just an added weight weenie note. One can almost always save weight by using a smaller diameter post with a shim.
No, but I like my Easton CT2 becauseChen2
Feb 8, 2002 7:22 AM
the rail clamp system makes detailed adjustments very easy and accurate. I weigh 165 (in the summer), I wouldn't worry about a 175# rider but for over 200# folks there may be a weight where this system is no longer safe.
-Al
No... to the weight thingGeof
Feb 8, 2002 3:29 PM
There is no problem with this (ct2) post if your over 200. Maybe if your REALLY big, but then you need to look at other things as well. I have a compact frame and definately can tell the diff from a carbon post versus my old Thomson. The T post was great but the carbon is sweet... and I weigh in at 200-210 "off" season...
Super Cool Aesthetics!jtolleson
Feb 8, 2002 7:33 AM
I went through your EXACT process about 3 months ago. Some folks said they felt a difference; most said "probably not." I can't tell because I also changed to a more race-oriented firmer saddle at the time, so my ride just simply changed all the way around.

But you cannot BEAT the look a CF seatpost adds to a frame, especially unpainted ti like you (and I) have. A silly consideration? Maybe. But looking at your bike should make you happy. The modest weight savings are also a plus.

Frivolous? Maybe. But buy a toy once in a while.
I agreetcr01
Feb 8, 2002 7:40 AM
you have to like how things look. If anything it will be an added mental boost. I did like the look of ny Giant carbon post, but functionally it sucked. I do like the look of the Thomson setback.
I agreeduh
Feb 8, 2002 9:26 PM
I disagree first you say you have to like how thing look! Then you say based on your tests. How can one run a test based on looks!!!
Who said anything about "Tests?"jtolleson
Feb 9, 2002 10:19 AM
Went from Ultegra to USE carbon.Sintesi
Feb 8, 2002 8:06 AM
Lost >150g which is pretty significant. It doesn't feel that much more comfy but as noted above it looks just bitching and that is way important, dude.

Also, I say skip the USE because it is too expensive and difficult to initially set up. A real pain. After that though it is good to go.
re: Carbon Fiber Seat Posts, can you feel the ride difference?Troyboy
Feb 8, 2002 9:47 AM
Campy carbon posts here. They look great with carbon cranks, carbon wheels, carbon levers, etc., etc. I'm lookin' forward to Record carbon covered brakes. :) Can't feel any difference at all from any other material.
for a compact or a standard frame?ColnagoFE
Feb 8, 2002 1:17 PM
I'll buy that for a compact frame with lots of seatpost showing you might notice a difference, but for a standard frame with not much post showing I just don't see how it could make much difference.
for a compact or a standard frame?tcr01
Feb 8, 2002 1:57 PM
Based on my tests abov,e which were done on a compact frame, I would argue that no difference was noticed with the 27.2 dia posts. With the 31.8, yes, the l post was noticably stiffer, but only a little bit. Note that it was not the material, but the dia. that made the difference since both 27.2's felt the same.
hey tcrcyclopathic
Feb 8, 2002 2:29 PM
I had the same frame and my observations were opposite from yours. Maybe the type of post we used for tests has to do with it

Can't disagree with your argument yes post design has more to do then the actual material used. CF can be made very stiff or softer with nice dead feel, same applies to Al, Ti, CroMo. Of cause to make CF, Ti and CroMo stiff you'd have to overbuild them a lot.

The fact is that with little SP shown on full size frame it would have very little effect, much less then say getting Brooks or big a$$ MTB seat
re: Carbon Fiber Seat Posts, can you feel the ride difference?mackgoo
Feb 10, 2002 5:38 AM
Yeah, it looks cool. ;)