Seat Post Size
09-05-20, 09:34 AM
#1
Senior Member
Thread Starter
Join Date: Sep 2014
Posts: 646
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 185 Post(s)
Liked 36 Times
in
31 Posts
Seat Post Size
Restoring an early 80’s Raleigh mixte. Pulled the seat post. It only has Max/minimum insertion labeled on it, no size. My calipers measure it at 25.77. What size is this supposed to be? 25.4? 26.2? Or, did they use a funky size no longer commonly found?
Likes For leecycle:
09-05-20, 09:59 AM
#3
Senior Member
Join Date: Feb 2013
Location: Alta California
Posts: 14,273
Mentioned: 415 Post(s)
Tagged: 1 Thread(s)
Quoted: 3815 Post(s)
Liked 3,345 Times
in
2,182 Posts
Likes For juvela:
09-05-20, 10:03 AM
#4
Senior Member
Join Date: Aug 2020
Location: South Wales
Posts: 206
Bikes: 2016 Trek Emonda S6 frameset, custom build (road). 1995 Dawes Genesis Reynolds 531 Competition frameset, custom build (road). 1996 Orange C16R frameset, custom build (retro MTB). Coyote Dual hard-tail, custom build (MTB).
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 61 Post(s)
Liked 76 Times
in
55 Posts
Measuring is better than guessing. Most better bicycle shops will have a set of seatpost-sizing rods to gauge the right size. Google search 25.8mm seatpost and there are a fair few options available.
Likes For Craptacular8:
Likes For leecycle:
09-05-20, 02:32 PM
#7
weapons-grade bolognium
Join Date: Dec 2008
Location: Across the street from Chicago
Posts: 6,347
Bikes: Battaglin Cromor, Ciocc Designer 84, Schwinn Superior 1981
Mentioned: 44 Post(s)
Tagged: 0 Thread(s)
Quoted: 985 Post(s)
Liked 2,380 Times
in
893 Posts
Measuring is good, see if you can find an old catalog to confirm.
09-05-20, 05:37 PM
#8
Senior Member
Join Date: May 2011
Location: Seattle WA
Posts: 2,841
Bikes: 2009 Handsome Devil, 1987 Trek 520 Cirrus, 1978 Motobecane Grand Touring, 1987 Nishiki Cresta GT, 1989 Specialized Allez Former bikes; 1986 Miyata Trail Runner, 1979 Miyata 912, 2011 VO Rando, 1999 Cannondale R800, 1986 Schwinn Passage
Mentioned: 72 Post(s)
Tagged: 0 Thread(s)
Quoted: 796 Post(s)
Liked 522 Times
in
367 Posts
See St Sheldon the Brown data base on seat post size always a good place to start and yes 25.8 was a thing. I just ordered a Ice Toolz seat post gauge as I find calipers and seat post sizing to be kinda meh. Are you gonna post a pic of the bike in question....?
09-05-20, 06:39 PM
#9
señor miembro
Join Date: Dec 2018
Location: Pac NW
Posts: 6,629
Bikes: '70s - '80s Campagnolo
Mentioned: 92 Post(s)
Tagged: 0 Thread(s)
Quoted: 3891 Post(s)
Liked 6,491 Times
in
3,213 Posts
What's wrong with it? Just need a longer/nicer one?
