seat post question

"Steve Gibson" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Hello,

I am new to mountain biking and I have a question hopefully someone can

help

Quoted message said:

me with. I am a heavy rider, and I am having problems keeping the seat

and

Quoted message said:

seat post kept up at the right height. Is there any thing that I can do

to

Quoted message said:

help me out (beside losing weight) I am already doing that by riding. I didn't know if there was
an insert you could put in, or a clamp you could buy, any help would be appreciated, thank you
very much and thank you in advance,

Steve

No matter what your weight, the seatpost should not slip.

Possibly

1) The seatpost is too small for the bike. In which case get the correct size.

2) The seat QR/bolt (you don't specify which) is [censored]. In which case get a new one that isn't.

3) The frame is damaged and cannot grip the post. Solutions to this may vary from squeezing the top
of the seat tube in slightly, through reaming out the seat tube to scrapping the frame and a few
others besides.

Google groups searches of alt.mountain-bike and rec.bicycles.tech should give you some insight. If
the problem is the area of 3 above, think carefully before you do anything rash.

Andy Chequer

Steve Gibson said:

Hello,

I am new to mountain biking and I have a question hopefully someone can help me with. I am a heavy
rider, and I am having problems keeping the seat and seat post kept up at the right height. Is
there any thing that I can do to help me out (beside losing weight) I am already doing that by
riding. I didn't know if there was an insert you could put in, or a clamp you could buy, any help
would be appreciated, thank you very much and thank you in advance,

First off, insure it is the correct size post for the seat-tube. (take bike to LBS and have htem
check the I.D. of the tube w/a gauge.

Second mic the post and make sure it has not been crushed my excessive clamping forces.

If 1 or 2 prove to be the issue replace seatpost.

If everything checks out and it is STILL slipping: try:
velonews.com3288.0.htmlOpen ↗ and in extremem cases:
bikemag.comslipping seatpostOpen ↗

"Steve Gibson" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Hello,

I am new to mountain biking and I have a question hopefully someone can

help

Quoted message said:

me with. I am a heavy rider, and I am having problems keeping the seat

and

Quoted message said:

seat post kept up at the right height. Is there any thing that I can do

to

Quoted message said:

help me out (beside losing weight) I am already doing that by riding. I didn't know if there was
an insert you could put in, or a clamp you could buy, any help would be appreciated, thank you
very much and thank you in advance,

Steve

If there's a quick release, get rid of it and buy a regular clamp. Ensure that the outer diameter of
the seat post is correct for the seat tube (you may want a bike shop to do this -- actually, both of
these). You can buy a seat post shim, too, but a bike shop will have all the options.

--
Bob ctviggen at rcn dot com

"Steve Gibson" <[email hidden]> wrote in message
news:<[email hidden]>...

Quoted message said:

Hello,

I am new to mountain biking and I have a question hopefully someone can help me with. I am a heavy
rider, and I am having problems keeping the seat and seat post kept up at the right height. Is
there any thing that I can do to help me out (beside losing weight) I am already doing that by
riding. I didn't know if there was an insert you could put in, or a clamp you could buy, any help
would be appreciated, thank you very much and thank you in advance,

Steve

Hi Steve Take it to your LBS, where you bought it from, and get them to sort it out, your seat post
is probably the wrong diameter, if it is correctly sized it won't slip. cheers Martin

martin said:

"Steve Gibson" <[email hidden]> wrote in message
news:<[email hidden]>...

Quoted message said:

Hello,

I am new to mountain biking and I have a question hopefully someone can help me with. I am a heavy
rider, and I am having problems keeping the seat and seat post kept up at the right height. Is
there any thing that I can do to help me out (beside losing weight) I am already doing that by
riding. I didn't know if there was an insert you could put in, or a clamp you could buy, any help
would be appreciated, thank you very much and thank you in advance,

Steve

Hi Steve Take it to your LBS, where you bought it from, and get them to sort it out, your seat
post is probably the wrong diameter, if it is correctly sized it won't slip.

Listen to the man.. I'm 250+ fully loaded w/ my 'Bak... the only time I;ve had problems is whne the
seat post and seat tubes were of dis-similar sizes (see RedLine MonoCog woes ;-)

"ClydesdaleMTB" <[email hidden]> wrote in message "]news:[email hidden]...

Quoted message said:

martin said:

"Steve Gibson" <[email hidden]> wrote in message

news:<[email hidden]>...

Quoted message said:

Quoted message said:

Quoted message said:

Hello,

I am new to mountain biking and I have a question hopefully someone can

help

Quoted message said:

Quoted message said:

Quoted message said:

me with. I am a heavy rider, and I am having problems keeping the seat

and

Quoted message said:

Quoted message said:

Quoted message said:

seat post kept up at the right height. Is there any thing that I can do

to

Quoted message said:

Quoted message said:

Quoted message said:

help me out (beside losing weight) I am already doing that by riding. I didn't know if there was
an insert you could put in, or a clamp you

could

Quoted message said:

Quoted message said:

Quoted message said:

buy, any help would be appreciated, thank you very much and thank you in advance,

Steve

Hi Steve Take it to your LBS, where you bought it from, and get them to sort it out, your seat
post is probably the wrong diameter, if it is correctly sized it won't slip.

Listen to the man.. I'm 250+ fully loaded w/ my 'Bak... the only time I;ve had problems is whne
the seat post and seat tubes were of dis-similar sizes (see RedLine MonoCog woes ;-)

Hmm.... I go about 250 and I've had plenty of problems with a few different seatposts slipping on a
couple different frames. Every single one of them was the right "nominal" size for the seat tube. By
far the worst of them all was a Thomson. I used a hose clamp/rubber pad to hold it in place. I asked
Thomson about it and they told me that they design their post to fit the small end of seat tube ID
and then apply a +0/-a few thousandths tolerance. Turns out mine was right at the small extreme of
things and that was enough to cause it to slip. Thomson did swap me for another one that was at the
large end of tolerance and that one held in place well.