Go Back  Bike Forums > Bike Forums > Road Cycling
Reload this Page >

Which Thomson seat post

Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

Which Thomson seat post

Old 07-31-09, 08:31 AM
  #1  
jbarham
Senior Member
Thread Starter
 
jbarham's Avatar
 
Join Date: Jun 2009
Posts: 218
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Which Thomson seat post

for a 2007 Lemond Buenos Aires?

My bike came stock with a Bontrager carbon seat post but I'm becoming more and more paranoid every time I plop back down into the saddle after standing up. Starting to sound kind of creaky, so I want to replace it with a Thomson.

Thoughts?
jbarham is offline  
Old 07-31-09, 08:42 AM
  #2  
FIVE ONE SIX
SpIn SpIn SuGaR!
 
FIVE ONE SIX's Avatar
 
Join Date: Aug 2005
Location: Long Island, NY
Posts: 2,078
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 15 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
i highly doubt your carbon seat post is going to snap just from you "plopping" back down on the saddle. usually, something like that creaking has to do with it being over tightened, so if i was you i would check that first. if you must have the Thomson post, which is a great choice by the way, get a Masterpiece if your weight wienie or a Elite if you're not..
FIVE ONE SIX is offline  
Old 07-31-09, 08:42 AM
  #3  
ericm979
Senior Member
 
ericm979's Avatar
 
Join Date: May 2007
Location: Santa Cruz Mountains
Posts: 6,169
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Buy a set of calipers. Then you can measure parts and know what size they are instead of asking on the internet.

Seat post creaks are often caused by seat fixing bolts that are not quite tight enough. Try greasing the bolt threads and heads and tightening them again. You should be able to find torque specs on the bontrager web site (possibly here: media.bontrager.com/faqs/Bontrager_%20Max_Torque_Specs.pdf ) Also check that the seat itself is not coming apart. Sometimes the base comes loose from the rails or the rails crack.

BTW, see http://cozybeehive.blogspot.com/2009...ightening.html
Thompson posts are good but not 100% fail proof, especially if you over tighten things.
ericm979 is offline  
Old 07-31-09, 09:21 AM
  #4  
jbarham
Senior Member
Thread Starter
 
jbarham's Avatar
 
Join Date: Jun 2009
Posts: 218
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Yeah I have no idea how much torque I applied to the seat post the last time I had it off. I guess now that I have a CF frame I should invest in a torque wrench.
jbarham is offline  
Old 07-31-09, 09:40 AM
  #5  
milchad
Senior Member
 
milchad's Avatar
 
Join Date: Oct 2007
Location: Winston-Salem, NC
Posts: 591

Bikes: 2 LeMond road bikes and a Cannondale MTB

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
27.2 at least 250mm long.
milchad is offline  
Old 07-31-09, 10:33 AM
  #6  
Scorer75
Senior Member
 
Scorer75's Avatar
 
Join Date: Mar 2006
Location: New York
Posts: 1,945
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
If you may have over torqued the carbon post, stay the hell off it, I've got the scars to prove it's a bad idea to ride it.

I bought a bike with what was supposed to have been a carbon wrapped aluminum post, so when I tightened it, I didn't pay much attention to the torque. Turns out they upgraded the post to full carbon at the factory for some reason.

On the shoulder of a two lane road at 20+ mph it just snapped, no creaking, no warning, just me bouncing down the road.

Get a Thomson Elite and be done with it, or get a NEW carbon seat post and a torque wrench.

YMMV
Scorer75 is offline  
Old 07-31-09, 10:41 AM
  #7  
jbarham
Senior Member
Thread Starter
 
jbarham's Avatar
 
Join Date: Jun 2009
Posts: 218
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I hate being paranoid, but I absolutely love my bike.
jbarham is offline  
Old 07-31-09, 01:18 PM
  #8  
DocJ
It's a Sledgehammer..
 
DocJ's Avatar
 
Join Date: Jan 2005
Location: Orlando
Posts: 216
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Buy a set of calipers. Then you can measure parts and know what size they are instead of asking on the internet.
Or not. No one's forcing anyone to reply to people's questions on the internet. Would it be ok if he asked on caliperforums.net what caliper to buy?
DocJ is offline  
Old 07-31-09, 01:21 PM
  #9  
AngryScientist 
Lost
 
AngryScientist's Avatar
 
Join Date: Jun 2008
Location: nutley, nj
Posts: 4,512
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
dont forget, if your positioning on the bike is good now, buy a seatpost with the same amount of setback.
AngryScientist is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Andrew R Stewart
Framebuilders
8
06-07-12 07:03 AM
big chainring
Classic & Vintage
14
04-16-12 04:48 AM
Square & Compas
Recumbent
7
08-26-09 07:50 PM
timmyquest
Great Lakes
16
02-17-09 05:27 AM
dekindy
Electronics, Lighting, & Gadgets
1
12-25-07 02:03 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.