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Is it me, or 27.0 vintage (Campagnolo/DuraAce) seatposts rare??

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Is it me, or 27.0 vintage (Campagnolo/DuraAce) seatposts rare??

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Old 12-02-18, 10:39 AM
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shuru421
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Is it me, or 27.0 vintage (Campagnolo/DuraAce) seatposts rare??

Not knocking Nitto or anything (those are relatively easy to find and quite lovely actually), but Im looking for Campagnolo or Dura Ace in 27.0 and finding it EXTREMELY difficult to source one via eBay.. Were not many made? Any other places I should/could look?? Or should I call it a day and go for a Nitto or Ritchey etc..?
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Old 12-02-18, 10:44 AM
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27.2, 26.4, 26.6 are much more common. The popular sizes.

27.0, 26.8, (Teledyne Titan) 26.2 (Cinelli size for a long time) 25.0 (Alan size)
Far fewer.

A "super" polished 27.2 will often mic' out as 27.0 or so close that you can get there with additional effort.
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Old 12-02-18, 11:08 AM
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There's almost a dozen, from various "generations" available on Ebay as I type this.
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Old 12-02-18, 11:10 AM
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I think my drug dealer(bike parts) has a 27.0 dura ace post for sale.

Id day the 26.8 dura ace posts are more rare to find. Especially in the non aero version.
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Old 12-02-18, 11:19 AM
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I was looking for some time for a nicer 27.0 mm post for my Ishiwata 024 framed Ross MTB, on a budget, and ended up using a cheap modern Kalloy 25.4 mm post that I had on hand with a Cane Creek shim. It sure beats using a post with an external clamp!

What other tubesets would one expect to take a 27.0 mm seatpost? This may tell you why it's not so easy to find high-zoots stuff in that size.
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Old 12-02-18, 11:45 AM
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Originally Posted by malcala622 View Post
I think my drug dealer(bike parts) has a 27.0 dura ace post for sale.

Id day the 26.8 dura ace posts are more rare to find. Especially in the non aero version.
Could you hopefully facilitate a drug (bike parts) deal ? loll, is it the fluted or the non-fluted or aero? I would love to see pics! PM?
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Old 12-02-18, 11:46 AM
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Originally Posted by nesteel View Post
There's almost a dozen, from various "generations" available on Ebay as I type this.
what are you typing? 27.0 seatposts? 27 vintage seatposts? I do see some but just not in the condition Im looking for. Also some that say 27.0 actually have 27.2 stamped on the seatpost itself..just wanted to add that.
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Old 12-02-18, 11:51 AM
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I'd expect the most common Dura-Ace post sizes to be 26.6 and 27.2mm. However, I'd think that there would good availability of 27.0mm Campagnolo posts, as this would be the correct size for Columbus SP and SPX frames. So, most 1970s and 1980s, high end Italian frames in 58cm+ size should have used this post size, though some manufacturers would ream these tubes to use the same post as SL and SLX.
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Old 12-02-18, 12:16 PM
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modify the frame?

My Bridgestone RB1 frame, came with a 27.0 seat tube ID,
first I got a USE, Seat post sizing Shim, [25 ID, 27 OD]
To Move the seat post I had been using, a 25.0mm , from my AlAn,
Over to that steel frame..

then, years later, I carefully reamed the 0.1mm of tube r, inside , difference,
until a 27.2 MM seat post I had on hand, fit,
with an adjustable reamer, (cutting oil and time)
I got to use the one at the LBS, in the off season, when the space was available..

seat tube open top, angled down, so potential chips did not fall into the BB..

(only later, did I work there, as I do, in the summer)
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Old 12-02-18, 12:56 PM
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I have a 27.0 aero seatpost, Shimano 640X series. Looks just like the DA one (in fact they use the same direction sheet, which comes with it).
Highly polished, looks awesome.
PM me if interested.
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Old 12-02-18, 01:40 PM
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Pretty sure I have a spare Campagnolo 2-bolt in 27.0. I'll have a look shortly...
(edit) ....And I do. PM incoming.
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Old 12-02-18, 04:40 PM
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Originally Posted by shuru421 View Post
Could you hopefully facilitate a drug (bike parts) deal ? loll, is it the fluted or the non-fluted or aero? I would love to see pics! PM?

Fluted but unfortunately is an SR post...not campy or DA
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Old 12-02-18, 06:21 PM
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Originally Posted by shuru421 View Post
what are you typing? 27.0 seatposts? 27 vintage seatposts? I do see some but just not in the condition Im looking for. Also some that say 27.0 actually have 27.2 stamped on the seatpost itself..just wanted to add that.
Campagnolo 27.0 for a search term

I have one tucked away for a rainy day.
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Old 12-04-18, 12:51 AM
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All my 70-76 Italvega frames built with Columbus tubing used Campagnolo 27.0 mm seatposts, other lower models used similar sized posts from other makers.
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Old 12-05-18, 03:16 PM
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Here is one for sale.
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Old 12-07-18, 07:28 AM
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Originally Posted by CV-6 View Post
Ah thanks, but that ones a bit tooo....vintage? If theres even a thing loll..its just not right for the build. I appreciate it nonetheless!
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Old 12-07-18, 08:44 AM
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Originally Posted by shuru421 View Post
Ah thanks, but that ones a bit tooo....vintage? If theres even a thing loll..its just not right for the build. I appreciate it nonetheless!
Ah. So you must want the second gen post.
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Old 12-07-18, 10:52 AM
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Rare? I did not realize that but I must admit that I have an old one kicking around. The Old School two bolt model, I believe.
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Old 12-07-18, 10:54 AM
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Just go spend the $10 and have your LBS ream the seat tube to 27.2
Done.
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