Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Galleries NEW FAQ Contact About
It is currently Sat Apr 30, 2016 12:36 pm

All times are UTC+01:00





Post new topic  Reply to topic  [ 7 posts ] 
Author Message
PostPosted: Sun May 05, 2013 3:11 am 
Offline

Joined: Mon Aug 23, 2010 8:17 pm
Posts: 115
Location: near Seattle
Knee-over-pedal-spindle is simple. Other recipes for finding optimal saddle setback start with putting the bike in a trainer. I'd rather experiment on the road. What are the symptoms of the saddle being too far forward? What are the symptoms of the saddle being too far back?

_________________
Saura mon coeur que mon cul poise.

adapted from Rabelais


Top
   
PostPosted: Sun May 05, 2013 3:18 am 
Offline
in the industry

Joined: Fri Dec 07, 2012 8:34 pm
Posts: 264
Location: North Carolina
why use another method if the knee over spindle is simple and works?

_________________
The New: BH http://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=117760

The Old: Trek http://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=110051


Top
   
PostPosted: Sun May 05, 2013 3:41 am 
Offline

Joined: Thu Mar 24, 2011 6:06 pm
Posts: 501
I find my body intuitively sitting in the right position even if my saddle is in the wrong place, hence if I shift the saddle too far back I'll end up sitting at its nose. keep shifting it front and back and try it out. Go for a test ride and stop frequently to adjust. Don't bother with fitting rules like knee-over-spindle.

_________________
Trek Mad-one 7 Series team colours http://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=115500&start=15


Top
   
PostPosted: Sun May 05, 2013 3:42 am 
Offline

Joined: Mon Aug 23, 2010 8:17 pm
Posts: 115
Location: near Seattle
Knee-over-pedal-spindle gives a result that works ok in practice for me. I'm not aware of any reason to believe that it gives the best possible result.

_________________
Saura mon coeur que mon cul poise.

adapted from Rabelais


Top
   
PostPosted: Sun May 05, 2013 6:03 am 
Offline

Joined: Fri Mar 18, 2005 4:12 pm
Posts: 2500
Location: eh?
Problem with knee of pedal spindle: imagine two identical riders but one has feet that are two sizes larger then the other. The only way to achieve the same leg joint angles on these two riders will be to have the saddle in two significantly different positions. One of these guys simply won't have their knee over the pedal spindle. It can work but be careful. A starting point at best.

_________________
swinter wrote:
Mr.Gib got it right


Top
   
PostPosted: Sun May 05, 2013 7:15 am 
Offline
Shop Owner

Joined: Tue Feb 08, 2011 7:56 am
Posts: 244
Location: California
We've noticed an increase in positions a tad back from the KOPS idea. I'm probably a CM behind with good results.


Top
   
PostPosted: Sun May 05, 2013 8:21 am 
Offline

Joined: Tue Nov 11, 2003 9:47 pm
Posts: 2138
Location: Santa Cruz, California, USA
Moving back increases the involvement of the glutes and makes high rpm somewhat more difficult. Moving forward increases involvement of the quads and makes high rpm somewhat easier. Many road racers and century riders prefer a somewhat back from KOPS position especially if they do a lot of climbing.

I set mine by how it feels. I aim for involving the quads and glutes equally. I wind up about 1-2cm behind KOPS, on a standard 73 degree seat tube road frame.

Some articles:

http://sheldonbrown.com/kops.html
https://www.stevehoggbikefitting.com/bl ... oad-bikes/


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 7 posts ] 

All times are UTC+01:00


Who is online

Users browsing this forum: Alexa [Bot], Bogan, burglarboycie, CBRE, Google [Bot], Lieblingsleguan, MSNbot Media, Yahoo [Bot] and 27 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited