Carbon seatpost worth it for comfort?

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odessouky
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Carbon seatpost worth it for comfort?

Postby odessouky » Mon Jun 02, 2014 09:22 am

I am in my third month of road cycling, and really enjoying it, but still have a long way to go in terms of fitness and weight loss...

So I am thinking about making things comfier so I can stay in the saddle more and increase my distances...

I've been advised that 25mm tyres would make a huge difference ...and a carbon seat post....

So basically, would getting a carbon seatpost really make a difference, and make the ride a bit more forgiving?

And if so, what do you suggest..

My bike is carbon, and it has a ritchey alloy seatpost, 300mm by 31.6mm..

PS: I AM ONLY CONCERNED ABOUT GAINS IN COMFORT, AND NOT WEIGHT etc..

Thanks

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goonz
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Re: Carbon seatpost worth it for comfort?

Postby goonz » Mon Jun 02, 2014 09:39 am

odessouky wrote:PS: I AM ONLY CONCERNED ABOUT GAINS IN COMFORT, AND NOT WEIGHT etc..


Get a full sus carbon mountain bike.
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ugo.santalucia
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Re: Carbon seatpost worth it for comfort?

Postby ugo.santalucia » Mon Jun 02, 2014 09:44 am

It's a legend... the vibration dampening properties of carbon fibre might account for less than 1% of the dampening properties of your tyres or your saddle.
Tyre size/ TPI count and pressure is what can increase comfort, the rest is bollox

markhewitt1978
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Re: Carbon seatpost worth it for comfort?

Postby markhewitt1978 » Mon Jun 02, 2014 10:05 am

How much seat post do you have showing? In general if it's only a few inches it won't make any difference, it may make a difference otherwise.

I changed from alu to carbon seat post but for weight savings, which I was happy with but I didn't notice a significant difference in ride quality.

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apreading
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Re: Carbon seatpost worth it for comfort?

Postby apreading » Mon Jun 02, 2014 11:21 am

Its not clear what you mean by 'gains in comfort'.

Are you finding that your bum is starting to ache when spending longer on the bike, or are you finding the ride harsh with lots of vibration transmitted to your body?

If the former then the saddle and shorts are the area that you need to look at, along with bike setup.

If the latter then as others, ugo in particular, have said - the aspects that influence vibration damping most are (in order and IMO):

1 Tyre pressure
2 Tyre type and width
3 Saddle flex
4 design of the rear triangle on the bike
5 and finally seatpost (but not just material - also inline or layback etc affects absorption properties)

I would have a good look at the first three before spending money on seatpost.

phillips1965
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Re: Carbon seatpost worth it for comfort?

Postby phillips1965 » Mon Jun 02, 2014 11:30 am

Hi. More time in the saddle will accustom your ars*, carbon seatposts imo negligible gains.

markhewitt1978
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Re: Carbon seatpost worth it for comfort?

Postby markhewitt1978 » Mon Jun 02, 2014 11:34 am

phillips1965 wrote: negligible gains.


I hear that's Sky's new motto :D

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drlodge
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Re: Carbon seatpost worth it for comfort?

Postby drlodge » Mon Jun 02, 2014 11:39 am

ugo.santalucia wrote:It's a legend... the vibration dampening properties of carbon fibre might account for less than 1% of the dampening properties of your tyres or your saddle.
Tyre size/ TPI count and pressure is what can increase comfort, the rest is bollox


And of those 3, I'd say TPI count is the biggest factor. Get yourself some Vittoria Open Corsa EVO CX or Paves plus some thin butyl (Conti Supersonic) or latex inner tubes and feeeeel the difference.
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odessouky
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Re: Carbon seatpost worth it for comfort?

Postby odessouky » Mon Jun 02, 2014 11:52 am

No pain in the bum after 50 miles or so....

Just feel the bumps and cracks in the road ...

As suggested above, the big difference I felt was when inflated the tyres...

My bike was a mail order from wiggle, and since it arrived a couple of months ago, I was riding GIT as it came in the post...

Last week a friend commented that my tyres felt very soft, and he had a pump..

Turns out I was riding at 70PSI since I received it...

He inflated the tyres to 120PSI, and I immediately felt the road much much more...

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ugo.santalucia
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Re: Carbon seatpost worth it for comfort?

Postby ugo.santalucia » Mon Jun 02, 2014 12:00 pm

ride them at 90 PSI and amen

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drlodge
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Re: Carbon seatpost worth it for comfort?

Postby drlodge » Mon Jun 02, 2014 12:02 pm

Had my Vittoria tubs pumped up to 130psi yesterday, must have been the reason my sit bones were aching after 60 miles in the saddle :roll:
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Bordersroadie
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Re: Carbon seatpost worth it for comfort?

Postby Bordersroadie » Mon Jun 02, 2014 12:07 pm

apreading wrote:
1 Tyre pressure
2 Tyre type and width
3 Saddle flex
4 design of the rear triangle on the bike
5 and finally seatpost (but not just material - also inline or layback etc affects absorption properties)

I would have a good look at the first three before spending money on seatpost.


A good summary, and maybe add
3(b) Quality of pad in shorts
4(b) Frame material

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apreading
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Re: Carbon seatpost worth it for comfort?

Postby apreading » Mon Jun 02, 2014 12:08 pm

What width tyres? Only reason I can think to run 100+ PSI would be if they are really skinny. For 25mm or 28mm then I would suggest 80-90 PSI. If they are narrower than this then get some wider tyres so that you can run at these pressures.

wongataa
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Re: Carbon seatpost worth it for comfort?

Postby wongataa » Mon Jun 02, 2014 12:30 pm

I recently bought new tyres. The old ones had 60 tpi. The new ones 110 tpi. Both sets are the same size. The new tyres are a lot more comfortable at the same pressure. They absorb bumps a lot more.

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ugo.santalucia
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Re: Carbon seatpost worth it for comfort?

Postby ugo.santalucia » Mon Jun 02, 2014 12:33 pm

wongataa wrote:I recently bought new tyres. The old ones had 60 tpi. The new ones 110 tpi. Both sets are the same size. The new tyres are a lot more comfortable at the same pressure. They absorb bumps a lot more.


Of course they do... it's the same difference as wearing a silk shirt or a shirt made of heavy cotton... the former is bound to be a lot more flexible and feel nicer

JayKosta
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Re: Carbon seatpost worth it for comfort?

Postby JayKosta » Mon Jun 02, 2014 12:46 pm

The size and shape of the saddle are the most important items for 'rear end' comfort.

Sit on a chair that shows your 'butt impression' and take notice of how wide apart the depressions are.
Find a saddle that is appropriate .....

Seatpost, tires, tire pressure, etc. are all secondary.

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Endwell NY USA

odessouky
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Re: Carbon seatpost worth it for comfort?

Postby odessouky » Mon Jun 02, 2014 15:00 pm

apreading wrote:What width tyres? Only reason I can think to run 100+ PSI would be if they are really skinny. For 25mm or 28mm then I would suggest 80-90 PSI. If they are narrower than this then get some wider tyres so that you can run at these pressures.



My tyres are Vitoria zaffiro 23mm on shimano R500 wheels..

When they were on 60 PSI they were very comfy.

I do not know the TPI count of my tyres I'm afraid?

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Bar Shaker
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Re: Carbon seatpost worth it for comfort?

Postby Bar Shaker » Mon Jun 02, 2014 15:45 pm

A carbon seat post has walls approx 5mm thick. Compare this to the 1mm thick walls of a carbon bike frame.

A carbon seat post will not dampen any vibration at all and the only weight saving will be from your wallet.
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apreading
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Re: Carbon seatpost worth it for comfort?

Postby apreading » Mon Jun 02, 2014 15:46 pm

Get some 25mm tyres and run at 80-90PSI.

23mm at 60PSI would have put you at risk of pinch flats, so your mate was right to up the pressures. I still think 120 is too much though - you could try nearer to 100.

25mm tyres have less rolling resistance too - so would be better all round. See this thread: viewtopic.php?f=40013&t=12971361

Slowbike
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Re: Carbon seatpost worth it for comfort?

Postby Slowbike » Mon Jun 02, 2014 15:55 pm

odessouky wrote:
apreading wrote:What width tyres? Only reason I can think to run 100+ PSI would be if they are really skinny. For 25mm or 28mm then I would suggest 80-90 PSI. If they are narrower than this then get some wider tyres so that you can run at these pressures.



My tyres are Vitoria zaffiro 23mm on shimano R500 wheels..

When they were on 60 PSI they were very comfy.

I do not know the TPI count of my tyres I'm afraid?


As has been said - try them at 90psi (or there abouts ... )

Tyres are a consumable. Use these ones until they puncture loads or wear so thin you can see the inner tube.

The only thing you may need to buy is a track pump with gauge - and that's only if you don't already have one, which judging by a previous post I guess you don't?


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