Go Back  Bike Forums > Bike Forums > Commuting
Reload this Page >

Question about non-quick-release seat clamp options

Commuting Bicycle commuting is easier than you think, before you know it, you'll be hooked. Learn the tips, hints, equipment, safety requirements for safely riding your bike to work.

Question about non-quick-release seat clamp options

Old 08-17-13, 07:48 PM
Senior Member
Thread Starter
Join Date: Mar 2012
Posts: 62
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Question about non-quick-release seat clamp options

I've got a quick release clamp on my seat, but I'd like to replace it with something that is a little less easy to steal (like a hex wrench or something). Is it possible to buy just a hex bolt to fit my existing clamp, or should I get a new clamp with bolt?

I found one on Amazon (http://www.amazon.com/Eleven81-Alloy...eat+post+clamp), but i'm not sure what size I need. The outside of the frame where the seat post inserts measures 31.9 with a digital caliper (when the current clamp is tightly attached). Would a 31.8 mm clamp work, or do I need to go a size up?

nonlinear is offline  
Old 08-17-13, 09:05 PM
Senior Member
Lug's Avatar
Join Date: Jun 2006
Location: Anchorage AK
Posts: 144

Bikes: 2015 Salsa Fargo 3, 2000 Specialized Rockhopper

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I plan on just going down to Ace Hardware with the hardware I want to replace in hand and paw through the bulk hardware bins until I find something that fits.
Lug is offline  
Old 08-17-13, 09:44 PM
Senior Member
devianb's Avatar
Join Date: Dec 2007
Location: Central Illinois
Posts: 806

Bikes: 2008 Dawes Haymaker 20XX Leader LD515 TotoCycling Road Bike

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 16 Post(s)
Likes: 0
Liked 3 Times in 3 Posts
What I did was disassemble the quick release bolt from the clamp and reused the clamp with a long allen head bolt and matching nut. Sorry can't help with the sizing.
devianb is offline  
Old 08-17-13, 10:26 PM
Bill Kapaun
Senior Member
Bill Kapaun's Avatar
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 10,803

Bikes: 86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 661 Post(s)
Liked 26 Times in 22 Posts
6mm bolt. Get grade 8.
NAPA or similar.
Bill Kapaun is online now  
Old 08-18-13, 01:24 PM
Join Date: Nov 2006
Location: Washington, DC
Posts: 33

Bikes: '86 or '87 Trek 850 MTB (bought used in 2007); previously: 1999 Bianchi Volpe

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
In some areas this won't be sufficient security against theft! I used to live in San Francisco, CA, and had my seat post and seat (and attached blinky) stolen, even after I'd replaced the QR clamp with a bolt-on (hex wrench required). This was not in an obviously-sketchy area, either. The LBS folks I chatted with about this all (at several SF shops) said that this was not uncommon (2008 or so, I believe) in SF and other "major" cities.

I ended up getting a product (maker's name escapes me now, but they're well known for other bike stuff) that allows clamp to be opened only when bike is turned upside-down. Later I discovered that Pinhead (was then being sold under a different name -- big bike-lock co., also can't remember that name!!) sold a set of their well-known locking wheel skewers (to replace wheel QR's) that also has a matching locking seat post clamp. My girlfriend bought that 3-piece set, and has been happy with it for past 2 years or so. (I've been happy with Pinhead wheel skewer locks for 4 years or so.)


Last edited by sean999; 08-18-13 at 01:33 PM. Reason: want to add more info
sean999 is offline  
Old 08-20-13, 07:04 AM
BF's Level 12 Wizard
SingingSabre's Avatar
Join Date: Feb 2006
Location: Secret mobile lair
Posts: 1,425

Bikes: Diamondback Sorrento turned Xtracycle commuter

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I threaded an old bike chain through the posts on my seat and under the bars that support the wheel, then wrapped it with an old tire tube to keep it neat. Haven't had a problem in the four years since I did that.
Shameless plugs:
Originally Posted by Bklyn
Obviously, the guy's like a 12th level white wizard or something. His mere presence is a danger to mortals.
SingingSabre is offline  
Related Topics
Thread Starter
Last Post
12-25-10 05:21 PM
Road Cycling
06-16-09 12:25 PM
06-24-08 06:43 AM
Cyclocross and Gravelbiking (Recreational)
03-09-06 01:24 PM
Singlespeed & Fixed Gear
04-20-04 11:03 PM

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 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.