Speaking of seatposts

Quoted message said:

I had a devil of a time getting a Colnago carbon seatpost into a C40.

Right

Quoted message said:

size, clean post and tube, but it just did not want to go in.

Grease this?

Use the 27.2 adapter/reducer and run a classic Campagnolo carbon post?

I just get a big mallet, and pound those suckers in 😉

On Sun, 23 Apr 2006 22:44:57 -0400, "Lee"

lee_AT_SHOES_wheelman_DOT_com said:

I had a devil of a time getting a Colnago carbon seatpost into a C40. Right
size, clean post and tube, but it just did not want to go in.

Grease this?

No. If it doesn't fit, it's not the right size, or the tube is not
the size that you expected. Grease will not fix it if it's the wrong
size, and if the greased tube goes in, then the dry tube should go in
as well. If the tube is greased, you'll need too much clamping force
to keep it from slipping once installed; you stand a good chance of
causing it to get crushed as a result.

Quoted message said:

Use the 27.2 adapter/reducer and run a classic Campagnolo carbon post?

Using an accurate caliper or micrometer, measure the one you bought,
particularly right at the insertion end; I'm betting that it's
actually not the size that it's supposed to be.
--
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Lee said:

I had a devil of a time getting a Colnago carbon seatpost into a C40.
Right size, clean post and tube, but it just did not want to go in.

Grease this?

Use the 27.2 adapter/reducer and run a classic Campagnolo carbon post?

TIA,

Lee

Is it a 27.0/27.2 conundrum? I had this a while back on an MTB frame. The
27.2 will jam in, but the 27.0 will slide in a little too freely. Your
Colnago is probably a little more discerning.

Many 2-piece seatposts have differing diameters. If the clamp is aluminum
pressed into a carbon tube, it's possible that the clamp is expanding the
diameter of the shaft slightly, and they might have measured the shaft
diameter off of that.

I have an aluminum seatpost that measures 31.0 at the pressed-in area,
30.7mm just below that, and tapering to 30.8mm at the bottom. The scratch
marks make this difference very obvious. It's also rather hard to keep the
seatpost tight on the skinny part.
--
Phil, Squid-in-Training