Cures for a slipping seat post?

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

Quoted message said:

Last couple of rides (only 11 mi ea) I've noticed that my seat post is slipping about 1-1.5" The
QR binder bolt is about as tight as I can get

it,

Quoted message said:

but it's still slipping.

I'm not sure if this is a product of a worn seat tube or seat post, maybe both? How do tell? Can a
Thomson cure this? If not, how exactly do you use those shims, and how do you determine what size
shim to use.

Also, any recommendations on a shim (manf'r), if it comes to that?

Frame: i-drive 2000-01 LE Seat Post: Syncros (stock OEM) 31.6mm

I used to think, the larger the seat post the better, but know I see why some of the better frame
makers use a smaller diameter tubing.

And if any of you even suggest contacting GT/Pacific for help, you deserve

a

Quoted message said:

big, punk rocker, pit stomping boot to the head!

Thanks
--
Slacker

First, I maintain Thomson only makes the second best post around...go RaceFace Diabolus or XY/XYO (O
if no setback is desired).

Second, shims are used to adapt too-small posts to seat tubes. But, only when they're clearly too
small, like a 26.8 in a 27.2 hole. Maybe you could use a square of beer can to make up the
difference.

Make sure you've greased it, too. Always lube before insertion - a handy rule of "thumb".

Chris

Quoted message said:

Make sure you've greased it, too. Always lube before insertion - a handy rule of "thumb".

or any other body part...

---
Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (grisoft.comgrisoft.comOpen ↗).
Version: 6.0.542 / Virus Database: 336 - Release Date: 11/18/2003

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

Quoted message said:

Last couple of rides (only 11 mi ea) I've noticed that my seat post is slipping about 1-1.5" The
QR binder bolt is about as tight as I can get

it,

Quoted message said:

but it's still slipping.

I'm not sure if this is a product of a worn seat tube or seat post, maybe both? How do tell? Can a
Thomson cure this? If not, how exactly do you use those shims, and how do you determine what size
shim to use.

Also, any recommendations on a shim (manf'r), if it comes to that?

Frame: i-drive 2000-01 LE Seat Post: Syncros (stock OEM) 31.6mm

I used to think, the larger the seat post the better, but know I see why some of the better frame
makers use a smaller diameter tubing.

And if any of you even suggest contacting GT/Pacific for help, you deserve

a

Quoted message said:

big, punk rocker, pit stomping boot to the head!

Thanks
--
Slacker

Try a Salsa leverlock binder. I had a case of Thomson slippage in my Tracer and this cured it. I
wouldn't shim it but the beer can suggestion may work. Drink a few before riding and you won't care
if your seatpost slips.

Pacific for help?....hahahheheheHAHAHAHAHA...BWAHAHAHA!!!!!!!!

Mike - old huh?! ;^p```

Slacker said:

Last couple of rides (only 11 mi ea) I've noticed that my seat post

is

Quoted message said:

slipping about 1-1.5" The QR binder bolt is about as tight as I can

get it,

Quoted message said:

but it's still slipping.

Remove QR.

Loosen QR.

Cut aluminum can to make a shim.

Place shim around seat tube, place QR on top of shim.

TIghten accordingly.

If it's still too loose, add another shim between QR and seat tube.

It's an Ellsworth trick since the seat tubes on man of their frames are over spec and some seatposts
(Easton) are under spec.

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

Quoted message said:

Last couple of rides (only 11 mi ea) I've noticed that my seat post is slipping about 1-1.5" The
QR binder bolt is about as tight as I can get

it,

Quoted message said:

but it's still slipping.

I'm not sure if this is a product of a worn seat tube or seat post, maybe both? How do tell? Can a
Thomson cure this? If not, how exactly do you use those shims, and how do you determine what size
shim to use.

Also, any recommendations on a shim (manf'r), if it comes to that?

Frame: i-drive 2000-01 LE Seat Post: Syncros (stock OEM) 31.6mm

I used to think, the larger the seat post the better, but know I see why some of the better frame
makers use a smaller diameter tubing.

And if any of you even suggest contacting GT/Pacific for help, you deserve

a

Quoted message said:

big, punk rocker, pit stomping boot to the head!

1) 86 the QR and try a "regular" seat post collar/binder.

2) Take post to LBS (or do yourself) and have it knurled a bit.

3) Do the beer can shim thing.

4) Contact GT/Pacific for help (just for fun).

Bill "blinkie clamp can also help" S.

Quoted message said:

Also, any recommendations on a shim (manf'r), if it comes to that?

Frame: i-drive 2000-01 LE Seat Post: Syncros (stock OEM) 31.6mm

Try a new seatpost with a diameter of 31.8mm. Any brand.

titec.comitems.aspOpen ↗

Titec black knoc rated - $15

-John Morgan

Slacker said:

Last couple of rides (only 11 mi ea) I've noticed that my seat post is slipping about 1-1.5" The QR
binder bolt is about as tight as I can get it, but it's still slipping.

I'm not sure if this is a product of a worn seat tube or seat post, maybe both? How do tell? Can a
Thomson cure this? If not, how exactly do you use those shims, and how do you determine what size
shim to use.

If it's the post that came with the bike, chances are it's OK.

Some things to try.

Make sure your QR nut isn't bottoming out (that there are still threads showing on the QR lever side
of the nut).

Make sure the threads are clean and well-greased.

Remove, clean and regrease the seat post, and the inside of the seat tube where it clamps (sandy
grit makes reasonably good ball bearings).

Look for any obvious signs of damage to the seat tube at the binder (bent, ovalized, etc.). Also
check the seat tube to make sure it's not bent/crimped, etc. Place a straight edge along its length
and look for gaps (remembering that a small fraction of a mm can cause problems).

Mark Hickey Habanero Cycles habcycles.comhabcycles.comOpen ↗ Home of the $695 ti frame

Slacker said:

Last couple of rides (only 11 mi ea) I've noticed that my seat post is slipping about 1-1.5" The
QR binder bolt is about as tight as I can get it, but it's still slipping.

I'm not sure if this is a product of a worn seat tube or seat post, maybe both? How do tell? Can a
Thomson cure this? If not, how exactly do you use those shims, and how do you determine what size
shim to use.

Also, any recommendations on a shim (manf'r), if it comes to that?

Frame: i-drive 2000-01 LE Seat Post: Syncros (stock OEM) 31.6mm

I used to think, the larger the seat post the better, but know I see why some of the better frame
makers use a smaller diameter tubing.

And if any of you even suggest contacting GT/Pacific for help, you deserve a big, punk rocker, pit
stomping boot to the head!

Thanks
--
Slacker

Take a pair of calipers to your post to make sure its round. My stock Thompson was slipping a lot.
When I asked for suggestions at my LBS, they checked to make sure it was the right diameter. It was
in one direction, but not the other!

Cheers, Shawn

Quoted message said:

1) 86 the QR and try a "regular" seat post collar/binder.

It's integrated into the seatpost, so I'm not sure that's an option

Quoted message said:

2) Take post to LBS (or do yourself) and have it knurled a bit.

What is this knurling you speak of??
--
Slacker

Quoted message said:

Try a Salsa leverlock binder. I had a case of Thomson slippage in my

Tracer

Quoted message said:

and this cured it. I wouldn't shim it but the beer can suggestion may

work.

Quoted message said:

Drink a few before riding and you won't care if your seatpost slips.

Pacific for help?....hahahheheheHAHAHAHAHA...BWAHAHAHA!!!!!!!!

Mike - old huh?! ;^p```

This cambriabike.comsalsa flip off seat binder skewer.htmOpen ↗ ?

A few beers... Whaddaya trying to get me naykid!
--
Slacker

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

Quoted message said:

Quoted message said:

1) 86 the QR and try a "regular" seat post collar/binder.

It's integrated into the seatpost, so I'm not sure that's an option

Quoted message said:

2) Take post to LBS (or do yourself) and have it knurled a bit.

What is this knurling you speak of??

Either just "roughing up" the surface so it's not so slippery, or actually deforming it slightly so
it gets pinched in the hole.

Bill "threw that last phrase in just for Jonesy" S.

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

Quoted message said:

Quoted message said:

Try a Salsa leverlock binder. I had a case of Thomson slippage in my

Tracer

Quoted message said:

and this cured it. I wouldn't shim it but the beer can suggestion may

work.

Quoted message said:

Drink a few before riding and you won't care if your seatpost slips.

Pacific for help?....hahahheheheHAHAHAHAHA...BWAHAHAHA!!!!!!!!

Mike - old huh?! ;^p```

This cambriabike.comsalsa flip off seat binder skewer.htmOpen ↗ ?

A few beers... Whaddaya trying to get me naykid!
--
Slacker

Oh wait it's a GT. Does it have a removable clamp or is the bolt built into the seat tube? If it's
built in the Salsa may not work at least it didn't for my DHi. But you live in the land of many bike
shops and may be able to try one first before you buy it.

As long as you stay over on the left coast I don't care what you wear. ;^)

Mike

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

Quoted message said:

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

Quoted message said:

What is this knurling you speak of??

Either just "roughing up" the surface so it's not so slippery, or actually deforming it slightly
so it gets pinched in the hole.

Bill "threw that last phrase in just for Jonesy" S.

[censored].

My mind was not in the gutter until you had to drop trou there. Thanks for the image - makes me
think of Paris Hilton, for some reason...
--
Jonesy

On Sun, 23 Nov 2003 16:59:23 -0800, "Slacker" <[email hidden]> wrote:

[snip blah, blah, blah]

Lose some friggin weight ya pin head!

Love, Bill ...one speed to rule them all, one speed to find them, one speed to bring them all and on
the trails pass them In the Land of Avalon where the geared pigs lie...

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

Quoted message said:

On Sun, 23 Nov 2003 16:59:23 -0800, "Slacker" <[email hidden]> wrote:

[snip blah, blah, blah]

Lose some friggin weight ya pin head!

Hehehe...guess that could be a clue. ;^)

Mike

Quoted message said:

Some things to try.

Make sure your QR nut isn't bottoming out (that there are still threads showing on the QR lever
side of the nut).

check

Quoted message said:

Make sure the threads are clean and well-greased.

dry as a bone with a thin layer of powered dirt

Quoted message said:

Remove, clean and regrease the seat post, and the inside of the seat tube where it clamps (sandy
grit makes reasonably good ball bearings).

I think you may have nailed it here. It's pretty filthy and well lubed, not a good combo, eh.

Quoted message said:

Look for any obvious signs of damage to the seat tube at the binder (bent, ovalized, etc.). Also
check the seat tube to make sure it's not bent/crimped, etc. Place a straight edge along its
length and look for gaps (remembering that a small fraction of a mm can cause problems).

So far so good. The bike is way over due for a good wash and lube. It's been running so good for so
long, I haven't done any kind of maintenance. The seat tube does look pretty tight/round, and I
can't imagine having enough clearance for a shim, even a thin beer can one.

Quoted message said:

Mark Hickey

Thanks for all the tips (and everyone else too!) Looks like it's a good maintenance weekend
for me :^ )
--
Slacker

Quoted message said:

Quoted message said:

[snip blah, blah, blah]

Lose some friggin weight ya pin head!

Hehehe...guess that could be a clue. ;^)

Mike

SOB.... ROTFLMAO, the ss psycho finally made laugh!
--
Slacker

Slacker said:

Quoted message said:

Quoted message said:

[snip blah, blah, blah]

Lose some friggin weight ya pin head!

Hehehe...guess that could be a clue. ;^)

Mike

SOB.... ROTFLMAO, the ss psycho finally made laugh!

'bout time.

Peace, Bill

...one speed to rule them all, one speed to find them, one speed to bring them all and on the trails
pass them In the Land of Avalon where the geared pigs lie...

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

Quoted message said:

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

Quoted message said:

Last couple of rides (only 11 mi ea) I've noticed that my seat post is slipping about 1-1.5" The
QR binder bolt is about as tight as I can get

it,

Quoted message said:

but it's still slipping.

I'm not sure if this is a product of a worn seat tube or seat post,

maybe

Quoted message said:

Quoted message said:

both? How do tell? Can a Thomson cure this? If not, how exactly do you use those shims, and how
do you determine

what

Quoted message said:

Quoted message said:

size shim to use.

Also, any recommendations on a shim (manf'r), if it comes to that?

Frame: i-drive 2000-01 LE Seat Post: Syncros (stock OEM) 31.6mm

I used to think, the larger the seat post the better, but know I see

why

Quoted message said:

Quoted message said:

some of the better frame makers use a smaller diameter tubing.

And if any of you even suggest contacting GT/Pacific for help, you

deserve

Quoted message said:

a

Quoted message said:

big, punk rocker, pit stomping boot to the head!

1) 86 the QR and try a "regular" seat post collar/binder.

2) Take post to LBS (or do yourself) and have it knurled a bit.

3) Do the beer can shim thing.

4) Contact GT/Pacific for help (just for fun).

Bill "blinkie clamp can also help" S.

Awe hell, WTF is wrong with a good ol' fashioned bead o' weld eh? FFS you guys.

Shaun aRe - Or juss don' be havin' such a fat butt.