Fitting the new Seatpost

"Caher" wrote: (clip) I've already ordered the new seat post - will I have
to send it back or is there a shim that will fit?
^^^^^^^^^^^^^^^
Probably won't need a shim. 0.2 mm isn't very much--probably can be handled
with a fraction of a turn on the clamping screw. Just be sure the slit at
the top of the seat tube isn't completely closed after you tighten it.

WRONG!

It matters. . . why do you think they make a 27.0 and a 27.2? If it didn't
matter, they'd only make one, right?

Buy a post at your local shop so that when such things occur, you can walk
in and exchange in person. What a miraculous concept, eh?

Send the post you "ordered" back and go to your shop to let them help find
the correct post. You can actually RIDE away on your bike instead of
waiting for UPS to arrive with the WRONG size part so you can't ride for
another week while the mail-order "exchange" takes place.

Isn't the extra buck or two worth that service and convenience?

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

Quoted message said:

"Caher" wrote: (clip) I've already ordered the new seat post - will I

have

Quoted message said:

to send it back or is there a shim that will fit?
^^^^^^^^^^^^^^^
Probably won't need a shim. 0.2 mm isn't very much--probably can be

handled

Quoted message said:

with a fraction of a turn on the clamping screw. Just be sure the slit at
the top of the seat tube isn't completely closed after you tighten it.

"Sven Longren" wrote: WRONG! (CLIP)
^^^^^^^^^^^^^^^
Sven, you seem pretty sure of yourself, and you could be right. The
difference in post diameter of 0.2 mm calculates to about .025" on the
circumference, which is how much extra he would have to close the gap to
tighten it. What's the harm in trying, if it means he might be able to use
the post and ride the bike with no extra fuss? Note that I cautioned him to
be sure not to "overclose" the gap.

Leo Lichtman said:

You seem pretty sure of yourself, and you could be right. The
difference in post diameter of 0.2 mm calculates to about .025" on
the circumference, which is how much extra he would have to close
the gap to tighten it. What's the harm in trying, if it means he
might be able to use the post and ride the bike with no extra fuss?
Note that I cautioned him to be sure not to "overclose" the gap.

And how does one "overclose"? That seems contradiction. Either it
closes or it doesn't.

Jobst Brandt
[email hidden]

Leo Lichtman said:

"Sven Longren" wrote: WRONG! (CLIP)
^^^^^^^^^^^^^^^
Sven, you seem pretty sure of yourself, and you could be right. The
difference in post diameter of 0.2 mm calculates to about .025" on the
circumference, which is how much extra he would have to close the gap
to tighten it. What's the harm in trying, if it means he might be
able to use the post and ride the bike with no extra fuss? Note that
I cautioned him to be sure not to "overclose" the gap.

Ah, but there's more at issue than merely "closing the gap". If the seat
post isn't snug in the tube, it could wreck the frame by moving fore and
aft. (That's why shims aren't just...gap-closers!?!)

About as tech as I get,
--
BS (no, really)

Quoted message said:

"Caher" wrote: (clip) I've already ordered the new seat post - will I have
to send it back or is there a shim that will fit?

Leo Lichtman said:

Probably won't need a shim. 0.2 mm isn't very much--probably can be handled
with a fraction of a turn on the clamping screw. Just be sure the slit at
the top of the seat tube isn't completely closed after you tighten it.

Depending on the frame, that could be really lousy advice.
Get the right size.

--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971

Leo Lichtman said:

"Sven Longren" wrote: WRONG! (CLIP)
^^^^^^^^^^^^^^^
Sven, you seem pretty sure of yourself, and you could be right. The
difference in post diameter of 0.2 mm calculates to about .025" on the
circumference, which is how much extra he would have to close the gap to
tighten it. What's the harm in trying, if it means he might be able to use
the post and ride the bike with no extra fuss? Note that I cautioned him to
be sure not to "overclose" the gap.

If you've ever tried to properly adjust a 27.0mm seat post in a 27.2mm
clamp, you'd realize that's pretty bad advice. Get the right size
seat post and save yourself a lot of trouble (and potential frame
damage even).

Mark Hickey
Habanero Cycles
http://www.habcycles.com
Home of the $695 ti frame

Leosays-<< Probably won't need a shim. 0.2 mm isn't very much--probably can be
handled
with a fraction of a turn on the clamping screw. Just be sure the slit at
the top of the seat tube isn't completely closed after you tighten it.

Quoted message said:

Quoted message said:

<BR><BR>

Well, I say, .2mm is HUGE. Trying to use a 27mm seatpost in a 27.2 is folly,
for instance and can kill a frameset.

Peter Chisholm
Vecchio's Bicicletteria
1833 Pearl St.
Boulder, CO, 80302
(303)440-3535
http://www.vecchios.com
"Ruote convenzionali costruite eccezionalmente bene"

Quoted message said:

Leo Lichtman said:

You seem pretty sure of yourself, and you could be right. The
difference in post diameter of 0.2 mm calculates to about .025" on
the circumference, which is how much extra he would have to close
the gap to tighten it. What's the harm in trying, if it means he
might be able to use the post and ride the bike with no extra fuss?
Note that I cautioned him to be sure not to "overclose" the gap.

And how does one "overclose"? That seems contradiction. Either it
closes or it doesn't.

You're very right. I suppose that's why he warns against it. Oxymorons are very
dangerous, attempts to perpetrate one usually result in disaster.

Ron

Quoted message said:

Quoted message said:

Leo Lichtman said:

You seem pretty sure of yourself, and you could be right. The
difference in post diameter of 0.2 mm calculates to about .025" on
the circumference, which is how much extra he would have to close
the gap to tighten it. What's the harm in trying, if it means he
might be able to use the post and ride the bike with no extra fuss?
Note that I cautioned him to be sure not to "overclose" the gap.

Quoted message said:

Quoted message said:

And how does one "overclose"? That seems contradiction. Either it
closes or it doesn't.

RonSonic said:

You're very right. I suppose that's why he warns against it. Oxymorons are very
dangerous, attempts to perpetrate one usually result in disaster.

When you stop tightening, the slit should have parallel
sides. If not, if the sides are closer at the top, you've
crimped the tube. 'Overclosed' would not be a bad descriptor.

--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971