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greasing carbon fibre post

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Philip T Ganderton

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Sep 17, 2002, 11:53:43 AM9/17/02
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What is the proper installation method for a carbon fibre seat post into a
carbon fibre seat tube? The post didn't come with any info regarding
greasing. Is it proper to do so as with metal posts and tubes? Same for
carbon fibre steerer tubes and clamp-on stems?

cheers,


--
Philip Ganderton, PhD
Economics Dept, UNM

View my Photo of the Week
http://gandini.unm.edu/personal/PhotoGallery/welcome.htm

TNT

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Sep 17, 2002, 12:32:47 PM9/17/02
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The instruction manual comes with the Easton EC70 tells that no grease
should be used for the carbon seat post. If there is any grease left
from the previous installation of a metal post, thorough cleaning should
be done before inserting the carbon seat post into the tube. In general,
no grease for such a kind of carbon product.

Garbear

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Sep 17, 2002, 2:48:19 PM9/17/02
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"Philip T Ganderton" <gan...@unm.edu> wrote in
news:am7j6f$cad$1...@nunki.unm.edu:

Philip, I just went through this process. Installed a new
Campy Record Carbon post into a Fondriest Titan Level 9 frame...
"NO" greasing. However, a "slight" dab of vasoline on the
inside of the tube should not hurt...

G

Matt O'Toole

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Sep 17, 2002, 3:41:05 PM9/17/02
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"Garbear" <nos...@nospamcorp.com> wrote in message
news:TNKh9.584$L35....@newsread2.prod.itd.earthlink.net...

I don't see how grease itself can hurt. The main thing is to keep it free
of grit, which grease tends to attract. So cleaning old grease carefully
before installation is probably a good idea. Grit can wear away at the
seatpost, since epoxy resin is a lot softer than metal.

The reason to put grease there normally is to prevent seizing of the metal
to metal joint; but with plastic (carbon/epoxy), this shouldn't be a
problem.

Matt O.

A Muzi

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Sep 17, 2002, 6:00:25 PM9/17/02
to
> "Philip T Ganderton" <gan...@unm.edu> wrote in
> news:am7j6f$cad$1...@nunki.unm.edu:
>
> > What is the proper installation method for a carbon fibre
> > seat post into a carbon fibre seat tube? The post didn't
> > come with any info regarding greasing. Is it proper to do
> > so as with metal posts and tubes? Same for carbon fibre
> > steerer tubes and clamp-on stems?
>

"Garbear" <nos...@nospamcorp.com> wrote in message
news:TNKh9.584$L35....@newsread2.prod.itd.earthlink.net...


> Philip, I just went through this process. Installed a new
> Campy Record Carbon post into a Fondriest Titan Level 9 frame...
> "NO" greasing. However, a "slight" dab of vasoline on the
> inside of the tube should not hurt...

I don't suppose you'd like to explain the practical effects of "grease" vs
"petroleum jelly" on a carbon-polymer structure?

--
Andrew Muzi
http://www.yellowjersey.org
Open every day since 1 April 1971


Garbear

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Sep 18, 2002, 12:44:27 PM9/18/02
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"A Muzi" <a...@yellowjersey.org> wrote in
news:3d87a605$0$1427$272e...@news.execpc.com:

Mechanical scientist, I AM NOT... I spoke with 3 different
builders in my area before using. And, confirmed what I was
told by one of them. The chemicals associated with one, are
not as harsh as forms of grease. Pjelly breaks does break
down in a timely fashion while doing somewhat the same job as
grease and grease doesn't. Made sense to me...

Also, There is no doubt about the benefits of petroleum jelly
in medical use. I would just like to point out the areas
where I have found it to be most useful.

1. In patients having dry (especially very dry) skin, the
skin tends to become very itchy and especially in winters and
dry weather braks out in rashes, and even aggravates skin
allergies. I have found it to be the best medium to grease,
lubricate and moisten such dry skins. The use of olive oil
is very effective also.

2. In the control of skin allergies of children (atopic
dermatitis or eczema), white petroleum jelly is used to be
mixed with steroid creams, so that they become mild and can
be applied locally as needed.

3. Some friends of mine (Dr. Maqsood Anwer, a skin
specialist at PIMS), and Mr Anjum Shafi (a pharmacist at
PIMS), used petroleum jelly as a base and mixed salicylic
acid (commonly called aspirin), as a treatment for warts. He
even went abroad to present this paper.

4. Petroleum jelly is one of the bases used for the
preparation of skin ointments by dispensing chemists and skin
specialists (dermatologists).

5. It is used by us lot (the allergy specialists) as a
vehicle for developing patch tests to diagnose skin allergy
in those patienst who are allergic to things touching their
skins (contact dermatitis) like due to different metals etc.

6. It can be applied on the inside of the nose, in patients
with long standing nasal complaints, like sneezing, or
excessive use of inexpensive anti-allergy medicines which
causes dryness inside the nose, leading to bleeding.

7. It is very effective to apply on chapped, cracked and dry
lips.

If, this product can be used as a base component in the Med
world, then it's chemical components would NOT likely harm the
compound strutucture of a carbon post.

That's my hy-pot-ten-oose of the right triangle 8-)

G

El Senor

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Sep 18, 2002, 9:25:26 PM9/18/02
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"Garbear" <nos...@nospamcorp.com> wrote:
> If, this product can be used as a base component in the Med
> world, then it's chemical components would NOT likely harm the
> compound strutucture of a carbon post.

1) Try liberal applications of "saline solution" to your steel frame, 3x
daily, for the next year.
2) Observe results
3)Don't forget to budget for a new frame

What feels good up your nose does not neccecarily do wonders for your
bicycle...

-Mike

jobst....@stanfordalumni.org

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Sep 18, 2002, 9:43:58 PM9/18/02
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Philip T Ganderton writes:

> What is the proper installation method for a carbon fibre seat post
> into a carbon fibre seat tube? The post didn't come with any info
> regarding greasing. Is it proper to do so as with metal posts and
> tubes? Same for carbon fibre steerer tubes and clamp-on stems?

The more important question is "why a carbon fork?" Just use a
reliable steel fork and forget about it. You are asking for a crash
with these expensive untried components that save about as much weight
as a half a water bottle at best, while reducing your safety margin to
zero. We have read about a few failures here already. Locally a
rider just finished a steep descent through a redwood forest after
which the fork separated at the steer tube on the flat part of the
ride.

More horror stories are coming in every week around here.

Jobst Brandt <jobst....@stanfordalumni.org> Palo Alto CA

Sparks

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Sep 18, 2002, 10:03:33 PM9/18/02
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In article <yZ9i9.25705$Ik.5...@typhoon.sonic.net>,
jobst....@stanfordalumni.org wrote:

> More horror stories are coming in every week around here.

and I got a nasty rash once from a wool jersey...


________________________________

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________________________________

Kraig Willett

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Sep 19, 2002, 12:59:02 AM9/19/02
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<jobst....@stanfordalumni.org> wrote in message
news:yZ9i9.25705$Ik.5...@typhoon.sonic.net...

> Philip T Ganderton writes:
>
> > What is the proper installation method for a carbon fibre seat
post
> > into a carbon fibre seat tube? The post didn't come with any info
> > regarding greasing. Is it proper to do so as with metal posts and
> > tubes? Same for carbon fibre steerer tubes and clamp-on stems?
>
> The more important question is "why a carbon fork?" Just use a
> reliable steel fork and forget about it.

How does one go about determining the reliability of a particular
steel fork?

Can these same methods be used to determine the reliability of a
particular carbon fork?

How about stems - (if you know the secret it might save me quite a bit
of time during my current project of _actually testing_ the products
in the category)?

>You are asking for a crash
> with these expensive untried components that save about as much
weight
> as a half a water bottle at best, while reducing your safety margin
to
> zero. We have read about a few failures here already.

Why the alarmist stance, Jobst? Not all carbon fork mfr's are created
equal, IMHO. Your comments are reminiscent of last years media frenzy
about shark attacks and this years frenzy on child abductions.

The fact is that CF forks have been around for quite some time - I've
got six years and maybe 75-100,000 kms on mine. They aren't breaking
at an alarming rate - sure, there have been some failures, some
recalls - the same is true for metal based forks. Furthermore,
designed-in safety margins on some CF forks are several times greater
than the flimsy department store steel fork flavors.

The question for me that remains, as always, is "how durable is
durable enough" and/or "how strong is strong enough". In order to
answer these questions you need to produce parts and track the
returns. I have a pretty good idea about these answers for bicycle
wheels and golf clubs - it is not so clear to me with regards to
forks. Do you have any insight into the return rates of specific
manufacturer's CF forks as compared to specific manufacturer's steel
forks in the past 5 years?

I'm not a big fan of CF steer tubes, but I'm even less of a fan of
broad generalizations. There are good manufacturers of CF parts out
there - in any case, visually inspect your lightweight zoot parts
frequently - listen to them too.


--
==========================
Kraig Willett
K-dub Enterprises
==========================

Volcano

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Sep 19, 2002, 7:32:20 AM9/19/02
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> More horror stories are coming in every week around here.

I didn't get a carbon seatpost to save weight. I got one to stop those
zingers to my private parts from my aluminum bike. It worked, so it's worth
the risk to me.

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