Carbon seat post

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temitchell1987
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Carbon seat post

Postby temitchell1987 » Wed Apr 03, 2013 14:40 pm

Hello all,

Some advice, direct me to the workshop if you feel that is more appropriate.

I have recently bought my first carbon steed. I have heard horror stories about seat posts snapping, warping etc etc when the band is over tightened. How tight should I be doing it up?

Thnak you for tolerating my stupidity on your forum.

Strith
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Re: Carbon seat post

Postby Strith » Wed Apr 03, 2013 14:53 pm

Use a torque wrench to tighten it to whatever the manufacturer recommends.

temitchell1987
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Joined: Sun Mar 31, 2013 16:41 pm

Re: Carbon seat post

Postby temitchell1987 » Wed Apr 03, 2013 14:55 pm

Good thinking that man. I'll go back under my rock now.

chrispsmith83
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Re: Carbon seat post

Postby chrispsmith83 » Wed Apr 03, 2013 14:56 pm

Also use some carbon paste so it doesn't get stuck

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BikeSwan
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Re: Carbon seat post

Postby BikeSwan » Wed Apr 03, 2013 15:39 pm

Invest in a torque wrench. Very useful for any carbon part. I'll say one thing though; my uber light seatpost is tightened considerably tighter with the torque wrench than what I would with just an allen key. It's actually harder to crush a modern seatpost than you think. Still . . . it's a good idea to play it safe and buy a decent torque wrench!

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Sandyballs
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Re: Carbon seat post

Postby Sandyballs » Wed Apr 03, 2013 18:15 pm

chrispsmith83 wrote:Also use some carbon paste so it doesn't get stuck


The main reason for using carbon paste is so that a lower torque can be used, it is a friction paste not a lubricating paste.

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wellbeloved747
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Re: Carbon seat post

Postby wellbeloved747 » Wed Apr 03, 2013 20:15 pm

I use some fibre grip then tighten to 5nm, it will break under weight before it slips!

JamesEs
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Re: Carbon seat post

Postby JamesEs » Wed Apr 03, 2013 20:30 pm

+1 for a decent torque wrench if you can spare the cash. If not, carbon assembly paste (reduces the amount of torque necessary for a firm hold) and a quarter turn of the hex key until it feels firm enough. This may take a bit of trial and error, but it's better to under tighten than over. Also, carbon seatposts probably aren't as delicate as you imagine!

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TheFD
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Re: Carbon seat post

Postby TheFD » Wed Apr 03, 2013 21:30 pm

Can anyone post a link of a decent torque wrench?
2013 - R872
2010 - Spesh Tarmac

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Monty Dog
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Re: Carbon seat post

Postby Monty Dog » Thu Apr 04, 2013 06:47 am

Ritchey Torqkey is all you need - preset to 5Nm and only £12-13.
Make mine an Italian, with Campagnolo on the side..

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jordan_217
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Re: Carbon seat post

Postby jordan_217 » Thu Apr 04, 2013 07:05 am

Monty Dog wrote:Ritchey Torqkey is all you need - preset to 5Nm and only £12-13.


+1 brilliant little tool. You can also tease the 'fixed' hex bit out of the tool body and use different sized bits. If you need a torque wrench with greater levels of adjustability then I can thoroughly recommend this Sealey one:

http://www.amazon.co.uk/Sealey-8-inch-2 ... B000RO1ZCG

You'll also need these:

http://www.amazon.co.uk/Laser-0593-Hex- ... _sim_diy_2

I've used mine quite a bit over the last year or so and it's been faultless.
“Training is like fighting with a gorilla. You don’t stop when you’re tired. You stop when the gorilla is tired.”

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Bar Shaker
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Re: Carbon seat post

Postby Bar Shaker » Fri Apr 05, 2013 11:43 am

Boardman Elite SLR 9.2S
Boardman FS Pro

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cheaterkiller
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Re: Carbon seat post

Postby cheaterkiller » Fri Apr 05, 2013 12:13 pm

Whats the best way to tighten one WITHOUT a tool that measures torque?
Cycling IS NOT full of dopists! and motorsport isnt full of women drivers!

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wellbeloved747
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Re: Carbon seat post

Postby wellbeloved747 » Fri Apr 05, 2013 12:51 pm


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Monty Dog
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Re: Carbon seat post

Postby Monty Dog » Fri Apr 05, 2013 12:52 pm

cheaterkiller wrote:Whats the best way to tighten one WITHOUT a tool that measures torque?


Carefully! If you use a T-handled tool and rely on a twist of your wrist rather than trying to exert lots of leverage.
Make mine an Italian, with Campagnolo on the side..


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