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Is carbon seat post an upgrade?

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Is carbon seat post an upgrade?

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Old 01-21-14, 11:47 PM
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Carbon for seat post or stem....

i give it a thumbs down.
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Old 01-22-14, 12:22 AM
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Originally Posted by Bob Dopolina
It happens with carbon, too. Paste helps.
Son of a @(*&$#$

Thanks for the clarification.
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Old 01-22-14, 04:02 PM
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I say it depends upon the frame geometry more than anything. I have a 1996 aluminum Cannondale that was downright abusive until I swapped to a carbon post. The carbon post upgraded it to only borderline abusive. Swapping to carbon handlebars made a much bigger improvement in comfort.

I have since used the same post on a couple other bikes, one an aluminum hybrid, and the other a carbon-tubed/aluminum-lugged mtb circa 1991. The post made little difference in the ride of the hybrid and even less on the mtb.
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Old 01-22-14, 04:24 PM
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Originally Posted by Breathegood
I say it depends upon the frame geometry more than anything. I have a 1996 aluminum Cannondale that was downright abusive until I swapped to a carbon post. The carbon post upgraded it to only borderline abusive. Swapping to carbon handlebars made a much bigger improvement in comfort.

I have since used the same post on a couple other bikes, one an aluminum hybrid, and the other a carbon-tubed/aluminum-lugged mtb circa 1991. The post made little difference in the ride of the hybrid and even less on the mtb.
Sounds like more of a tire volume issue than a geometry one, but since you didn't mention tire sizes, that's only a guess.
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Old 01-22-14, 04:33 PM
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Originally Posted by therh
Ok, after ridding my trainer, I made some quick measurements. The seat post is 31.6 mm and from the frame opening ( top of the opening) to bottom of rails is 132 mm. (https://www.chainreactioncycles.com/u...A&gclsrc=aw.ds)
Oh, my seatpost extension thing was only an hypothesis, albeit based on my own experiences across multiple bikes and post materials. I have no idea what the 'breakpoint' length might be between noticing improvement and not noticing anything, or if one even exists; although I'm certain length is a factor, I'm equally sure there are other factors as well that impact whether the rider perceives difference and to what extent.
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Old 01-22-14, 04:44 PM
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If it helps I am 160 lbs, and run 110 psi front and back with 23's.
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Old 01-22-14, 09:12 PM
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I'm leggy, riding a 61 or 62cm seat tube bike with an additional 20cm of seat post exposed.
Approximately overall 87cm from bb to seat.

A carbon 27.2mm post damps far more than an AL post.

On my carbon bike with a 31.6mm carbon post, I have not tried an AL alternative.... but I know I won't go back to AL.

Carbon damps more..... but narrower diameter has a greater effect. Narrower posts for a more compliant ride.
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Old 01-23-14, 01:44 AM
  #58  
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Old 01-23-14, 03:38 AM
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Originally Posted by therh
Hello,

I am running an aluminium Oval seat post on my Fuji Roubaix, and thinking about upgrading to a carbon seat post. My question is, would a carbon seat post add comfort during rides?
It most probably would be, if you buy something decent.
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Old 01-23-14, 09:38 AM
  #60  
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Originally Posted by therh
If it helps I am 160 lbs, and run 110 psi front and back with 23's.
If it's a zero set-back post. Don't bother with any upgrade. The most abusive is 0 zer0 setback straight carbon.

If you've got 20mm of setback, sure. Go Carbon or other.

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