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

Thoughts on KOPS

Search
Notices
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

Thoughts on KOPS

Thread Tools
 
Search this Thread
 
Old 02-06-09 | 11:00 PM
  #1  
Thread Starter
Banned.
 
Joined: Oct 2007
Posts: 172
Likes: 0
Thoughts on KOPS

I've been experimenting with different fore/aft seat adjustments lately. I had been trying to get all of the weight off my hands by moving the seat aft, all the way to about 4 inches behind KOPS. It worked as far as removing weight from the hands, but cost too much in terms of power. Now I'm back to KOPS, and feel like I can really create more power, especially when climbing. I'm going on a longer ride (about 70 miles) tomorrow, to see how the hands feel.

Has anybody else tried getting that far aft? It felt like my body's CG was right over the BB. Now it feels like it's more over the pedal as I'm pushing downward, which I think is where the extra power is coming from.
bent eagle is offline  
Reply
Old 02-06-09 | 11:30 PM
  #2  
rufvelo's Avatar
Senior Member
 
Joined: Jun 2005
Posts: 4,201
Likes: 1
Thoughts on KOPS?....misunderstood by many; overrated by the rest.
__________________
rufvelo is offline  
Reply
Old 02-06-09 | 11:37 PM
  #3  
Senior Member
 
Joined: Apr 2007
Posts: 288
Likes: 0
From: Seattle, WA/Vancouver, BC

Bikes: Giant Aero Road Bike, Quintana Roo TT bike, Airborne crit bike, Leader track bike, System6 in build stage

To get weight off your hands, raise your stem and/or shorten your reach. Both move your center of gravity rearward. KOPS is a good starting point, that's it.
tonyzackery is offline  
Reply
Old 02-06-09 | 11:45 PM
  #4  
roadiejorge's Avatar
stole your bike
Titanium Club Membership
15 Anniversary
 
Joined: Jan 2008
Posts: 6,907
Likes: 27
From: North Bergen, NJ

Bikes: Orbea Orca, Ridley Compact

I've tried different positions on the pedals and KOPS works fine, but it might be different for others so it's good as a starting point to getting your fit right.
__________________
I like pie
roadiejorge is offline  
Reply
Old 02-07-09 | 12:05 AM
  #5  
urbanknight's Avatar
Over the hill
20 Anniversary
 
Joined: Mar 2006
Posts: 24,587
Likes: 1,356
From: Los Angeles, CA

Bikes: Pinarello Nytro, Momentum Transend

As mentioned above, it sounds like your saddle position isn't causing the hand pressure, but rather your bar position. Shorter stem and possibly higher bars.
__________________
It's like riding a bicycle
urbanknight is offline  
Reply
Old 02-07-09 | 05:42 AM
  #6  
Senior Member
 
Joined: Aug 2006
Posts: 935
Likes: 0
From: Perth, W.A.
I thought the accepted wisdom was to separate saddle adjustment from hand adjustments. In other words, find the position (probably slightly behind KOPS) that is the best compromise between power and load on your knees. THEN sort out reach and bar position so that at the effort you want to cycle at the weight on your hands is minimised.
scirocco is offline  
Reply
Old 02-07-09 | 11:13 AM
  #7  
urbanknight's Avatar
Over the hill
20 Anniversary
 
Joined: Mar 2006
Posts: 24,587
Likes: 1,356
From: Los Angeles, CA

Bikes: Pinarello Nytro, Momentum Transend

^ I would agree with that.
__________________
It's like riding a bicycle
urbanknight is offline  
Reply
Old 02-07-09 | 01:19 PM
  #8  
yogi13's Avatar
Senior Member
 
Joined: Oct 2006
Posts: 1,113
Likes: 0
From: Torrance, CA

Bikes: '06 Specialized Allez Expert

To answer your question regarding trying different KOPS positions, I've tried up to maybe 2" behind KOPS to 1.5" in front. I've found that there are a few positions that work for me when combined with adjusting the saddle height, and I tinker with the setup during the course of the year and the type of ride. In other words, sometimes I'll move the saddle back and down, especially if I'm going to be doing some heavy climbing, front and up if on the flats and perhaps a shorter ride.

I'd agree with the others on your fit issues, though. Get your seat position down first, adjust your handlebar height up and/or back to get some pressure off your hands and arms.
yogi13 is offline  
Reply
Old 02-07-09 | 05:04 PM
  #9  
Senior Member
 
Joined: Jun 2008
Posts: 3,247
Likes: 7
From: Northern VA

Bikes: Moots Vamoots, Colnago C60, Santa Cruz Stigmata CC, and too many other bikes I don't ride

It's a long article, but if you slog thru it, you will be rewarded in much better understanding of how bike and the ride fit togehter:

https://www.sheldonbrown.com/kops.html
dalava is offline  
Reply
Old 02-07-09 | 05:54 PM
  #10  
Creakyknees's Avatar
ride lots be safe
 
Joined: Jan 2007
Posts: 5,224
Likes: 1
From: Texas
Anybody remember Steve Bauer and his custom extreme rearward position bike? I seem to recall he said it was because he has long femurs.

Anyway, consider a recumbent. Where's KOPS on that?

It becomes obvious that KOPS is merely a rule of thumb to get most riders pretty close to the torso / hip / thigh / leg angles that over time have been evolved to work pretty well.
Creakyknees is offline  
Reply
Old 02-07-09 | 06:12 PM
  #11  
Senior Member
 
Joined: Sep 2008
Posts: 7,296
Likes: 577
From: Loveland, CO

Bikes: Cervelo Rouvida x 2

A line can be drawn perpendicular to the crankarm and through the knee joint on a recumbent too. That's all KOP is. It has nothing to do with gravity. A plumb line is an easy way to construct a perpendicular line to a horizontal crank.

One a road bike, I worry more about rider balance over the saddle and minimizing the weight on my hands than KOP. Bike front/rear weight balance is important if you do any serious cornering. I like to see 42-45% of the weight on the front.

Last edited by DaveSSS; 02-08-09 at 09:06 AM.
DaveSSS is offline  
Reply
Old 02-07-09 | 10:17 PM
  #12  
Road Fan's Avatar
Senior Member
20 Anniversary
 
Joined: Apr 2005
Posts: 17,195
Likes: 761
From: Ann Arbor, MI

Bikes: 1980 Masi, 1984 Mondonico, 1984 Trek 610, 1980 Woodrup Giro, 2005 Mondonico Futura Leggera ELOS, 1967 PX10E, 1971 Peugeot UO-8

Originally Posted by scirocco
I thought the accepted wisdom was to separate saddle adjustment from hand adjustments. In other words, find the position (probably slightly behind KOPS) that is the best compromise between power and load on your knees. THEN sort out reach and bar position so that at the effort you want to cycle at the weight on your hands is minimised.

What do you mean by load on your knees? I haven't seen fore/aft position affect how my knees feel. Up/down does affect them.
Road Fan is offline  
Reply
Old 02-07-09 | 10:25 PM
  #13  
Road Fan's Avatar
Senior Member
20 Anniversary
 
Joined: Apr 2005
Posts: 17,195
Likes: 761
From: Ann Arbor, MI

Bikes: 1980 Masi, 1984 Mondonico, 1984 Trek 610, 1980 Woodrup Giro, 2005 Mondonico Futura Leggera ELOS, 1967 PX10E, 1971 Peugeot UO-8

Originally Posted by yogi13
To answer your question regarding trying different KOPS positions, I've tried up to maybe 2" behind KOPS to 1.5" in front. I've found that there are a few positions that work for me when combined with adjusting the saddle height, and I tinker with the setup during the course of the year and the type of ride. In other words, sometimes I'll move the saddle back and down, especially if I'm going to be doing some heavy climbing, front and up if on the flats and perhaps a shorter ride.

I'd agree with the others on your fit issues, though. Get your seat position down first, adjust your handlebar height up and/or back to get some pressure off your hands and arms.
Saddle height and fore/aft are coupled, moving it back increases height. It should be lowered a bit to restore your height setting, unless you need to change the height for a purpose, like you say.
Road Fan is offline  
Reply
Old 02-07-09 | 10:28 PM
  #14  
aham23's Avatar
grilled cheesus
 
Joined: Jun 2005
Posts: 6,957
Likes: 5
From: 8675309

Bikes: 2010 CAAD9 Custom, 06 Giant TCR C2 & 05 Specialized Hardrock Sport

shouldnt try to steal my crops....

later.
__________________
aham23 is offline  
Reply
Old 02-07-09 | 10:39 PM
  #15  
Brian Ratliff's Avatar
Senior Member
20 Anniversary
 
Joined: May 2002
Posts: 10,123
Likes: 4
From: Near Portland, OR

Bikes: Three road bikes. Two track bikes.

My saddle is as far back as possible while keeping my thighs from hitting my chest in a full aero tuck.

There is nothing magical about the 3:00 pedal position. Basically all you are doing is rotating your body around your crank. If you are bent over very far like in a TT position with your back literally horizontal, your saddle should be forward enough to keep your thighs from hitting your chest, which might bring your knee forward of the pedal in the 3:00 position. In a more classic road cycling position, your saddle should be further back, putting your knee directly over or behind the pedal.
__________________
Cat 2 Track, Cat 3 Road.
"If you’re new enough [to racing] that you would ask such question, then i would hazard a guess that if you just made up a workout that sounded hard to do, and did it, you’d probably get faster." --the tiniest sprinter
Brian Ratliff is offline  
Reply
Old 02-07-09 | 11:07 PM
  #16  
umd's Avatar
umd
Banned
 
Joined: Sep 2005
Posts: 28,387
Likes: 3
From: Santa Barbara, CA

Bikes: Specialized Tarmac SL2, Specialized Tarmac SL, Giant TCR Composite, Specialized StumpJumper Expert HT

Since I was tooling around on the rollers this evening in a hotel room and didn't have much else to do, I took some pics to see where my new position puts me relative to KOPS. Looks pretty close... but I side more forward in the saddle when riding hard.

umd is offline  
Reply
Old 02-08-09 | 07:29 AM
  #17  
aham23's Avatar
grilled cheesus
 
Joined: Jun 2005
Posts: 6,957
Likes: 5
From: 8675309

Bikes: 2010 CAAD9 Custom, 06 Giant TCR C2 & 05 Specialized Hardrock Sport

^^^^what ya got in the Whole Foods bag?

later.
__________________
aham23 is offline  
Reply
Old 02-08-09 | 09:49 AM
  #18  
urbanknight's Avatar
Over the hill
20 Anniversary
 
Joined: Mar 2006
Posts: 24,587
Likes: 1,356
From: Los Angeles, CA

Bikes: Pinarello Nytro, Momentum Transend

Originally Posted by aham23
^^^^what ya got in the Whole Foods bag?

later.
Ooh, let's play a guessing game. I'll go with Clif Bars and bananas.
__________________
It's like riding a bicycle
urbanknight is offline  
Reply
Old 02-08-09 | 09:57 AM
  #19  
BikeWNC's Avatar
Climbing Above It All
 
Joined: Oct 2004
Posts: 4,146
Likes: 3
From: Basking in the Sun.
I wonder how one can get 4 inches behind KOPS on a road bike. Does the bike have a 68* STA? Are you using a seatpost with a huge amount of setback and the saddle slammed all the way back? I don't think I could get near 4 inches behind KOPS on either of my bikes.
BikeWNC is offline  
Reply
Old 02-08-09 | 10:37 AM
  #20  
Senior Member
 
Joined: Aug 2005
Posts: 1,936
Likes: 0
Holy cow! 4 inches behind? That's a good setup for a beach cruiser. How much weight do you need to get off your hands? A good road bike setup is all about a good balance between weight fore and aft. One problem with being so far behind is that no matter what you do with your handlebars, you will have to bend over too sharply at the waist to ride comfortably, plus, you will have so much of your weight on your behind that anything you gain for your hands you will lose for your butt. You have to take these things you read about having the saddle all the way back with a grain of salt.
Longfemur is offline  
Reply
Old 02-08-09 | 01:04 PM
  #21  
Senior Member
 
Joined: Apr 2005
Posts: 109
Likes: 0
From: St Louis

Bikes: Tarmac Pro w/ SR 11

It sounds like you need to get your bike fit on with a good bike fitter. You may try lowering your bars a bit and staying with KOPS and that should help relieve some pressure off your hands. I know it sounds off, but it works. I did this with a guy who always complained of too much pressure on his hands, and now he feels so comfortable on the bike. But seriously, pay the money and get a fit.
campyman099 is offline  
Reply
Old 02-08-09 | 01:08 PM
  #22  
aham23's Avatar
grilled cheesus
 
Joined: Jun 2005
Posts: 6,957
Likes: 5
From: 8675309

Bikes: 2010 CAAD9 Custom, 06 Giant TCR C2 & 05 Specialized Hardrock Sport

Originally Posted by urbanknight
Ooh, let's play a guessing game. I'll go with Clif Bars and bananas.
Peanut Butter Buzz Crunch maybe?

later.
__________________
aham23 is offline  
Reply
Old 02-08-09 | 01:27 PM
  #23  
umd's Avatar
umd
Banned
 
Joined: Sep 2005
Posts: 28,387
Likes: 3
From: Santa Barbara, CA

Bikes: Specialized Tarmac SL2, Specialized Tarmac SL, Giant TCR Composite, Specialized StumpJumper Expert HT

Answered in my fit thread...
umd is offline  
Reply
Old 02-08-09 | 01:47 PM
  #24  
invwnut's Avatar
I don't even own a cat...
 
Joined: Nov 2008
Posts: 424
Likes: 0
From: Indianapolis

Bikes: 2008 LG sonix 6.4, 2002 KHS Flite 500, 1999 Big Sur Gary Fisher

don't let the whole foods bag fool you. It probably is a front for snickers bars and captain crunch cereal. He doesn't eat the peanut butter crunch do to the salmonella scare....

Wow must be nice to take the rollers and bike wherever you go....
invwnut is offline  
Reply
Old 02-08-09 | 04:28 PM
  #25  
Senior Member
 
Joined: Apr 2008
Posts: 70
Likes: 0
From: Bedford, England

Bikes: Condor Italia, Pinarello Sestriere

this is interesting - I tried it and it works well.
https://peterwhitecycles.com/fitting.htm
italiaandyf is offline  
Reply


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

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.