Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

User Tag List

Reply
 
Thread Tools Search this Thread
Old 08-18-07, 11:57 PM   #1
MIN 
big ring
Thread Starter
 
MIN's Avatar
 
Join Date: Mar 2007
Location: philadelphia
Bikes:
Posts: 5,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Non-setback Post or shorter stem

Those with experience:

what are the pros and cons of

(1) getting a shorter stem and keeping my setback post or
(2) keeping my stem and getting a non-setback like a Tompson post?

I need to reduce my saddle to bar reach: with my bullhorns (Nitto RB021) the 120mm is too long. It worked for the track bar but not with the bullhorns.

Last edited by MIN; 08-19-07 at 07:51 AM.
MIN is offline   Reply With Quote
Old 08-19-07, 12:14 AM   #2
shakeNbake
Mooninite
 
shakeNbake's Avatar
 
Join Date: May 2006
Location: South of Heaven
Bikes: $53 Walmart Special
Posts: 3,187
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Moving the saddle forwards(or backwards) will change the KOPS. Changing the stem length won't change KOPS, but it will affect the handling. Your choice.

I would change the stem instead of the seatpost.
shakeNbake is offline   Reply With Quote
Old 08-19-07, 05:46 AM   #3
Aeroplane
jack of one or two trades
 
Aeroplane's Avatar
 
Join Date: Jun 2005
Location: Suburbia, CT
Bikes: Old-ass gearie hardtail MTB, fix-converted Centurion LeMans commuter, SS hardtail monster MTB
Posts: 5,637
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by shakeNbake View Post
I would change the stem instead of the seatpost.
+1, don't **** with your knees. Plus, changing stems is easy.
Aeroplane is offline   Reply With Quote
Old 08-19-07, 07:50 AM   #4
MIN 
big ring
Thread Starter
 
MIN's Avatar
 
Join Date: Mar 2007
Location: philadelphia
Bikes:
Posts: 5,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
IS KOPS that important? I've heard competing theories on that from fit specialists at various LBSs. For instance, looks at the Triathalon position.
MIN is offline   Reply With Quote
Old 08-19-07, 09:56 AM   #5
rhygin
Junior Member
 
Join Date: Jun 2006
Location: PDX
Bikes:
Posts: 11
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I bought a setback post with the idea of stretching out my saddle to bar reach on a too-small frame that I just bought. I tried for 6-months to like it, but I finally came to the conclusion that KOPS is a completely independent adjustment that you need to figure out for yourself. For me, I need a zero setback for things to feel right. Opposite issue from you, but if your knees feel ok right now, I would suggest changing stems first.
rhygin is offline   Reply With Quote
Old 08-19-07, 10:10 AM   #6
mathletics
jerk store
 
mathletics's Avatar
 
Join Date: Mar 2006
Location: Boston
Bikes: '80s Chimo Garbage fixed 36/14, Centurion fixed 42/17
Posts: 605
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
+1 save your knees. Get a shorter stem.
mathletics is offline   Reply With Quote
Old 08-19-07, 10:17 AM   #7
mander
Senior Member
 
Join Date: Sep 2006
Location: Van BC
Bikes:
Posts: 3,744
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
You have to consider where you want your weight to go too. A shorter stem puts more weight on your ass; a non setback post puts more on your wrists. Id say though that 120mm is pretty darn long and looks to me like the more shaveable of the two lengths.
mander is offline   Reply With Quote
Old 08-19-07, 10:50 AM   #8
Landgolier
THIS SPACE FOR RENT
 
Join Date: Jan 2006
Bikes:
Posts: 2,849
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'd generally vote for changing the stem, this is almost always necessary with bullhorns if your stem originally fit drops.

Most saddle rails are long enough that you could get a taste of how a zero setback post feel by just turning the seat post 180* and then putting the saddle on pushed all the way back. It's going to look a little goofy, but you could preview how a steeper effective geometry would feel for $0.00.
Landgolier is offline   Reply With Quote
Old 08-19-07, 11:01 AM   #9
MIN 
big ring
Thread Starter
 
MIN's Avatar
 
Join Date: Mar 2007
Location: philadelphia
Bikes:
Posts: 5,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Landgolier View Post
I'd generally vote for changing the stem, this is almost always necessary with bullhorns if your stem originally fit drops.

Most saddle rails are long enough that you could get a taste of how a zero setback post feel by just turning the seat post 180* and then putting the saddle on pushed all the way back. It's going to look a little goofy, but you could preview how a steeper effective geometry would feel for $0.00.
That's a great suggestion.

I appreciate the input from everyone.
MIN is offline   Reply With Quote
Old 08-19-07, 11:22 AM   #10
andre nickatina
not actually Nickatina
 
andre nickatina's Avatar
 
Join Date: Oct 2006
Location: OR
Bikes:
Posts: 4,447
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Shorter stem FTW.
andre nickatina is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 02:35 PM.