seatpost question

Hell and High Water said:

I measured my current seatpost and as far as I could tell the diameter
was one inch.

I see 27.2 mm

Is that what I'm looking for in a new post? Or are there other sizes
that are close enough for me to be concerned?

TIA,

-Bob

Seat post sizes have to be exact matches down to tenths of a mm. If your
current post fits and says 27.2, then that's what you need --- exactly.

In article <[email hidden]>,
[email hidden] says...

Quoted message said:

Hell and High Water said:

I measured my current seatpost and as far as I could tell the diameter
was one inch.

I see 27.2 mm

Is that what I'm looking for in a new post? Or are there other sizes
that are close enough for me to be concerned?

TIA,

-Bob

Seat post sizes have to be exact matches down to tenths of a mm. If your
current post fits and says 27.2, then that's what you need --- exactly.

My current post fits, but it doesn't say anything....

???

It also doesn't adjust very easily at all. That's why I'm looking for a
new one.

Unfortunately, I don't know what size to buy...

-Bob

Hell and High Water said:

I measured my current seatpost and as far as I could tell the diameter
was one inch.

I see 27.2 mm

Is that what I'm looking for in a new post? Or are there other sizes
that are close enough for me to be concerned?

One inch would be 25.4 mm. 27.2 mm is a popular size, but there are
many other sizes in use. This is one area where "close" isn't good
enough. Get the seat post diameter measured with a good vernier
caliper. Or visit a local bike shop.

Art Harris

Find yourself a set of vernier calipers and use those to measure the
outside diameter of your current seatpost. Assuming the calipers are
zeroed properly, you should get a very accurate reading of the size of
seatpost you need.

If the problem is that your seatpost is "stuck," then you'll have a devil
of a time removing it anyway. To loosen it, undo the binder bolt.
Then get some penetrating oil--I use 3-in-One-- and drip this where the
seatpost meets the seat tube. Grab the saddle and try to twist it. This
may require a bit of force. Twist, drip oil, twist...the seatpost should
start to wiggle free eventually, and you'll be able to adjust it then.

However, to prevent siezing in the future, you might want to remove the
seatpost entirely and slather it in a layer of grease.

-Luigi

--
Luigi de Guzman
http://ouij.livejournal.com

On 2007-07-16, Hell and High Water <[email hidden]> wrote:
\

Quoted message said:

In article <[email hidden]>,
[email hidden] says...

Quoted message said:

Hell and High Water said:

I measured my current seatpost and as far as I could tell the diameter
was one inch.

I see 27.2 mm

Is that what I'm looking for in a new post? Or are there other sizes
that are close enough for me to be concerned?

Seat post sizes have to be exact matches down to tenths of a mm. If your
current post fits and says 27.2, then that's what you need --- exactly.

Quoted message said:

My current post fits, but it doesn't say anything....

So where exactly did you see this "27.2 mm" then? When in doubt, measure
the seat tube ID directly, with a caliper capable of reading to 0.1mm.

--

John ([email hidden])

In article <[email hidden]>,
[email hidden] says...

Quoted message said:

On 2007-07-16, Hell and High Water <[email hidden]> wrote:
\

Quoted message said:

In article <[email hidden]>,
[email hidden] says...

Quoted message said:

Hell and High Water wrote:
> I measured my current seatpost and as far as I could tell the diameter
> was one inch.
>
>
> I see 27.2 mm
>
>
> Is that what I'm looking for in a new post? Or are there other sizes
> that are close enough for me to be concerned?

Seat post sizes have to be exact matches down to tenths of a mm. If your
current post fits and says 27.2, then that's what you need --- exactly.

Quoted message said:

My current post fits, but it doesn't say anything....

So where exactly did you see this "27.2 mm" then?

On the Ebay post from the seatpost I'm thinking of buying.

And on Performance Bike, on the second seatpost I'm thinking of
buying...

Quoted message said:

When in doubt, measure
the seat tube ID directly, with a caliper capable of reading to 0.1mm.

So now instead of trolling ebay for seatposts, I'm trolling ebay for
calipers that can read down to 0.1mm

;-)

-Bob

Hell and High Water said:

Quoted message said:

When in doubt, measure
the seat tube ID directly, with a caliper capable of reading to 0.1mm.

So now instead of trolling ebay for seatposts, I'm trolling ebay for
calipers that can read down to 0.1mm

Ten dollars at your local hardware store will get the job done. Measure
YOUR seatpost, then take that measurement to your LBS, and they'll be able
to help you.

Also, did you read my post about stuck seatposts?

--
Luigi de Guzman
http://ouij.livejournal.com

In article <[email hidden]>, [email hidden]
says...

Quoted message said:

Hell and High Water said:

Quoted message said:

When in doubt, measure
the seat tube ID directly, with a caliper capable of reading to 0.1mm.

So now instead of trolling ebay for seatposts, I'm trolling ebay for
calipers that can read down to 0.1mm

Ten dollars at your local hardware store will get the job done. Measure
YOUR seatpost, then take that measurement to your LBS, and they'll be able
to help you.

Also, did you read my post about stuck seatposts?

I did. Mine is not stuck, but I appreciate the info.

My only problem is my seatpost is very old, and it's difficult to
adjust. I'm thinking a newer post would have more/easier ability to
adjust...

Thanks,

-Bob

Hell and High Water said:

In article <[email hidden]>, [email hidden]
says...

Quoted message said:

Hell and High Water said:

> When in doubt, measure
> the seat tube ID directly, with a caliper capable of reading to 0.1mm.

So now instead of trolling ebay for seatposts, I'm trolling ebay for
calipers that can read down to 0.1mm

Ten dollars at your local hardware store will get the job done. Measure
YOUR seatpost, then take that measurement to your LBS, and they'll be able
to help you.

Also, did you read my post about stuck seatposts?

I did. Mine is not stuck, but I appreciate the info.

My only problem is my seatpost is very old, and it's difficult to
adjust. I'm thinking a newer post would have more/easier ability to
adjust...

Please define "adjust." Are you talking about seatpost *height* or saddle
position and angle?

Height adjustment is governed by the tightness of the fit between the
seatpost, the seat tube, and the seatpost binder bolt/collar. That's it.
A new seatpost will not be any "easier" or more difficult to adjust,
because you'd be using exactly the same things to move it up and down: an
allen wrench, brute force, and maybe a bit of oil or grease.

Fore-and-aft and angle adjustment is governed by the saddle clamp. Here,
a new seatpost might be of use, since more recent "micro-adjust" seatposts
have the saddle clamp integrated into the post itself.

As you posted originally, I understood that you were having trouble moving
the *seatpost.* You didn't mention anything about the *saddle*. Related
issues, but different.

-Luigi

Quoted message said:

Thanks,

-Bob

--
Luigi de Guzman
http://ouij.livejournal.com

In article <[email hidden]>, [email hidden]
says...

Quoted message said:

Please define "adjust." Are you talking about seatpost *height* or saddle
position and angle?

See notes below

Quoted message said:

Height adjustment is governed by the tightness of the fit between the
seatpost, the seat tube, and the seatpost binder bolt/collar. That's it.
A new seatpost will not be any "easier" or more difficult to adjust,
because you'd be using exactly the same things to move it up and down: an
allen wrench, brute force, and maybe a bit of oil or grease.

Height is not a problem. Post slides up and down with no problem.
Clamps tight, no problem.

Quoted message said:

Fore-and-aft and angle adjustment is governed by the saddle clamp. Here,
a new seatpost might be of use, since more recent "micro-adjust" seatposts
have the saddle clamp integrated into the post itself.

That's what I'm looking for. 'micro-adjust'

My current OLD seat post has a small single bolt which screws into a
large aluminum block under the saddle. I can adjust forward/backwards
fairly easily, but it's tough to get the saddle exactly where I want it.

The angle adjustment on mine is a complete joke. VERY limited angles,
and VERY difficult to adjust the angle.

Quoted message said:

As you posted originally, I understood that you were having trouble moving
the *seatpost.* You didn't mention anything about the *saddle*. Related
issues, but different.

I guess the way I define it, you don't really adjust the seatpost, per
se, other than up and down.

You are correct in that I am trying to adjust my saddle. However, my
thinking is that the saddle is what it is, and it's very static.

In order to adjust the front/back, or the angle adjustment, you have to
be working with the seatpost.

Sorry for my incorrect use of the terminology.

Basically, my seatpost sucks. It's old and very limiting. I'd like to
get a new one, but I'm not sure what size to buy....

-Bob

Hell and High Water said:

Basically, my seatpost sucks. It's old and very limiting. I'd like to
get a new one, but I'm not sure what size to buy....

Others have suggested various ways to measure, but the easiest thing is
simply to bring the entire bicycle to a bike shop. Your old seatpost
will show what length you use, and the shop should have a stepped rod
that they can insert into the seat tube to find out what diameter post
you need. Quick, easy, and no cost beyond the price of the new post.

In article <[email hidden]>,
[email hidden] says...

Quoted message said:

Hell and High Water said:

Basically, my seatpost sucks. It's old and very limiting. I'd like to
get a new one, but I'm not sure what size to buy....

Others have suggested various ways to measure, but the easiest thing is
simply to bring the entire bicycle to a bike shop. Your old seatpost
will show what length you use, and the shop should have a stepped rod
that they can insert into the seat tube to find out what diameter post
you need. Quick, easy, and no cost beyond the price of the new post.

That would be seriously crappy of me to take it in there, have them
measure it for me, then leave and buy the post off ebay....

.....wouldn't it?

;-)

-Bob

Hell and High Water said:

In article <[email hidden]>,
[email hidden] says...

Quoted message said:

Hell and High Water said:

Basically, my seatpost sucks. It's old and very limiting. I'd like to
get a new one, but I'm not sure what size to buy....

Others have suggested various ways to measure, but the easiest thing is
simply to bring the entire bicycle to a bike shop. Your old seatpost
will show what length you use, and the shop should have a stepped rod
that they can insert into the seat tube to find out what diameter post
you need. Quick, easy, and no cost beyond the price of the new post.

That would be seriously crappy of me to take it in there, have them
measure it for me, then leave and buy the post off ebay....

....wouldn't it?

Yes it would. Don't gyp the local shop--they're potentially your best
friends, particularly when you're in *real* trouble and *need* their help.
If you've built up goodwill over time, they'll be more willing to deal
with you. Human nature.

It's a seatpost, after all. Shouldn't be too much trouble. Heck, you
never know what other goodies they might have in store down there.

Last trip I made to the LBS, I got a good deal on a saddle and a free
front fender. I *wuv* my LBS.

-Luigi

Quoted message said:

;-)

-Bob

--
Luigi de Guzman
http://ouij.livejournal.com

Hell and High Water said:

In article <[email hidden]>,
[email hidden] says...

Quoted message said:

Hell and High Water said:

Basically, my seatpost sucks. It's old and very limiting. I'd like to
get a new one, but I'm not sure what size to buy....

Others have suggested various ways to measure, but the easiest thing is
simply to bring the entire bicycle to a bike shop. Your old seatpost
will show what length you use, and the shop should have a stepped rod
that they can insert into the seat tube to find out what diameter post
you need. Quick, easy, and no cost beyond the price of the new post.

That would be seriously crappy of me to take it in there, have them
measure it for me, then leave and buy the post off ebay....

Crappy is not the word I would use. Theft is, since you are deliberately
stealing their time.

--
Tom Sherman - Holstein-Friesland Bovinia
The weather is here, wish you were beautiful

--
Posted via a free Usenet account from http://www.teranews.com

In article <[email hidden]>, sunsetss0003
@yahoo.com says...

Quoted message said:

Hell and High Water said:

In article <[email hidden]>,
[email hidden] says...

Quoted message said:

On 2007-07-17, Hell and High Water <[email hidden]> wrote:

> Basically, my seatpost sucks. It's old and very limiting. I'd like to
> get a new one, but I'm not sure what size to buy....
Others have suggested various ways to measure, but the easiest thing is
simply to bring the entire bicycle to a bike shop. Your old seatpost
will show what length you use, and the shop should have a stepped rod
that they can insert into the seat tube to find out what diameter post
you need. Quick, easy, and no cost beyond the price of the new post.

That would be seriously crappy of me to take it in there, have them
measure it for me, then leave and buy the post off ebay....

Crappy is not the word I would use. Theft is, since you are deliberately
stealing their time.

I totally agree. I would never do that...

Probably ask about seatpost diameter on r.b.m and see what happens....

;-)

-Bob

Hell and High Water said:

I did. Mine is not stuck, but I appreciate the info.

My only problem is my seatpost is very old, and it's difficult to
adjust. I'm thinking a newer post would have more/easier ability to
adjust...

OK, when I got asked a similar question by someone else some time ago, it
turned out that they really wanted a quick release CLAMP for their seatpost
so they wouldn't have to use a wrench to loosen the bolt. That's an
entirely different thing and a cheap part. You don't need a new seatpost to
do this.

This probably isn't what you are asking for, but I'm not sure how one
seatpost can be much different to adjust than another seatpost (unless we
are talking about suspension seatposts here).