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PostPosted: Sun Oct 21, 2012 1:53 pm 
Old School Hero

Joined: Wed Dec 29, 2010 1:04 am
Posts: 245
Location: Richmond British Columbia
Has anyone reduced the outside diameter of a donor seatpost for a project that had an unusual size? If so please give me some pointers for a project like this Thanks John


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 Post subject: Seatpost
PostPosted: Thu Oct 25, 2012 9:47 pm 
Devout Dirtbag

Joined: Wed Jan 06, 2010 12:03 am
Posts: 104
I`ve taken a post from 27.2 to 26.8 before. Only a cheapy post with plenty of wall thickness mind you. Lightweight posts are a different territory as they`ll probably break if you take off more than a whisker. If you have access to a lathe its an easy task, about 15-20mins work although a machine shop would probably charge you the price of a decent post to do it.

Is it a type of post you want to stay with or is the frame a weird size?


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 Post subject: machined post
PostPosted: Fri Oct 26, 2012 1:45 pm 
Old School Hero

Joined: Wed Dec 29, 2010 1:04 am
Posts: 245
Location: Richmond British Columbia
Yes it is specific. I want a syncros post and the size is a 26.4. This I"m beginning to believe will be a hard post to find


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 Post subject:
PostPosted: Sun Oct 28, 2012 8:01 pm 
Old School Hero

Joined: Mon Dec 05, 2011 1:05 pm
Posts: 154
Location: Wales
You could get the frame reamed out a bit too. Why not? Meet halfway!


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 Post subject:
PostPosted: Sun Oct 28, 2012 8:02 pm 
Old School Grand Master
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Joined: Tue Oct 04, 2011 4:15 pm
Posts: 3499
Location: Behind you with the duct tape pulled out.
Or shim a smaller post up which would be a safer and easier option.


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 Post subject:
PostPosted: Sun Oct 28, 2012 9:06 pm 
Old School Hero

Joined: Mon Dec 05, 2011 1:05 pm
Posts: 154
Location: Wales
poweredbypies wrote:
Or shim a smaller post up which would be a safer and easier option.


Sissy


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 Post subject:
PostPosted: Sun Oct 28, 2012 9:19 pm 
Old School Grand Master
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Joined: Tue Oct 04, 2011 4:15 pm
Posts: 3499
Location: Behind you with the duct tape pulled out.
jmgk wrote:
poweredbypies wrote:
Or shim a smaller post up which would be a safer and easier option.


Sissy


:lol: yeah but a sissy without half a seatpost up my jacksie :lol:


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 Post subject: post
PostPosted: Wed Oct 31, 2012 11:30 pm 
Devout Dirtbag

Joined: Wed Jan 06, 2010 12:03 am
Posts: 104
I waited for ages for a syncros in 27.0 then saw 3 in the space of a few weeks. I don`t know if syncros had custom drawn tubing for each diameter or every few diameters. Maybe there`s enough wall thickness in a 26.8 to machine away which is a more common size. I`d be willing to compare the wall thickness from my syncros 27.0 if anyone can quote the wall thickness of a 27.2 or 26.8 ???


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