Go Back  Bike Forums > Bike Forums > Classic & Vintage
Reload this Page >

Rails too thick for clamp?

Notices
Classic & Vintage This forum is to discuss the many aspects of classic and vintage bicycles, including musclebikes, lightweights, middleweights, hi-wheelers, bone-shakers, safety bikes and much more.

Rails too thick for clamp?

Old 09-20-23, 06:48 PM
  #1  
v8powerage
Junior Member
Thread Starter
 
v8powerage's Avatar
 
Join Date: Jun 2016
Posts: 128

Bikes: Giant Cadex 980C

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 77 Post(s)
Liked 9 Times in 3 Posts
Rails too thick for clamp?

I bought very cheaply selle italia century it seemed cool because of forged aluminum rails but turns out they are terrible I can't clamp them, they are not standard, way too thick (when I try to clamp there's huge gap between top and bottom part). I'm gonna try find longer bolt because stock is way too short for it but still not sure if it's safe to have such big gap I think they should be fairly close, what do you advise? Some guy told me about some carbon seatpost but this is old bike 1 inch seatpost, it won't work.
v8powerage is offline  
Old 09-20-23, 06:53 PM
  #2  
Piff 
Senior Member
 
Piff's Avatar
 
Join Date: Nov 2013
Location: Southern California
Posts: 1,574
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 755 Post(s)
Liked 685 Times in 379 Posts
Are they oval rails?
Piff is offline  
Old 09-20-23, 06:59 PM
  #3  
oneclick 
Senior Member
 
Join Date: Feb 2020
Posts: 2,830
Mentioned: 45 Post(s)
Tagged: 0 Thread(s)
Quoted: 1082 Post(s)
Likes: 0
Liked 1,258 Times in 747 Posts
The Cinelli aluminium-railed saddles are a bit like that, but they still fit ok in a campag seat-post.
oneclick is offline  
Old 09-20-23, 08:58 PM
  #4  
v8powerage
Junior Member
Thread Starter
 
v8powerage's Avatar
 
Join Date: Jun 2016
Posts: 128

Bikes: Giant Cadex 980C

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 77 Post(s)
Liked 9 Times in 3 Posts
I guess I have to sell it I should got turbomatic I have one but it got worn out and suspension fell out on one side had to stuff there some rubber.
v8powerage is offline  
Old 09-20-23, 09:11 PM
  #5  
jetboy 
Senior Member
 
jetboy's Avatar
 
Join Date: Oct 2007
Location: Oakland, CA
Posts: 3,444

Bikes: centurion cinelli equipe, look hinault 753, Zunow z-1, 83 stumpy sport

Mentioned: 66 Post(s)
Tagged: 0 Thread(s)
Quoted: 814 Post(s)
Liked 329 Times in 185 Posts
looks like the rails are easily replaceable - probably with only the same! haha. maybe not?
jetboy is offline  
Old 09-20-23, 10:10 PM
  #6  
repechage
Senior Member
 
Join Date: Jun 2006
Posts: 20,282
Mentioned: 129 Post(s)
Tagged: 0 Thread(s)
Quoted: 3433 Post(s)
Liked 2,772 Times in 1,955 Posts
Originally Posted by oneclick
The Cinelli aluminium-railed saddles are a bit like that, but they still fit ok in a campag seat-post.
with the original design two bolt post,usually not a problem, with the later single bolt designs, one may need a longer fastener. I would not consider it a problem with a quality bolt.
repechage is offline  
Old 09-21-23, 03:02 AM
  #7  
daviddavieboy
Senior Member
 
daviddavieboy's Avatar
 
Join Date: Oct 2013
Location: Great White North
Posts: 937

Bikes: I have a few

Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 340 Post(s)
Liked 207 Times in 103 Posts
Those are just oval rails similar to the Flite Ti saddles of old or carbon rail saddles they make today. For seat posts that clamp on the side there are adapters that can be purchased but these saddles like to be clamped from the top and bottom.
daviddavieboy is offline  
Old 09-21-23, 01:37 PM
  #8  
genejockey 
Klaatu..Verata..Necktie?
 
genejockey's Avatar
 
Join Date: May 2007
Location: SF Bay Area
Posts: 17,178

Bikes: Litespeed Ultimate, Ultegra; Canyon Endurace, 105; Battaglin MAX, Chorus; Bianchi 928 Veloce; Ritchey Road Logic, Dura Ace; Cannondale R500 RX100; Schwinn Circuit, Sante; Lotus Supreme, Dura Ace

Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 9949 Post(s)
Liked 11,211 Times in 5,739 Posts
IIRC, the standard rail diameter is 7mm. My Lotus came with a San Marco Concor Superleggera saddle, which had 8mm diameter solid aluminum rails, so the standard clamp will work poorly. Add to that the limited fatigue life of aluminum, as well as the age of the saddle and guess what? One of the rails broke, right where it exits the clamp. I guess it was asking a lot from a 30 year old saddle whose rails were white with corrosion, that it should last under my 200lbs for very long.
__________________
"Don't take life so serious-it ain't nohow permanent."

"Everybody's gotta be somewhere." - Eccles
genejockey is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.