Go Back  Bike Forums > Bike Forums > Fitting Your Bike
Reload this Page >

Sliding forward in saddle

Notices
Fitting Your Bike Are you confused about how you should fit a bike to your particular body dimensions? Have you been reading, found the terms Merxx or French Fit, and don’t know what you need? Every style of riding is different- in how you fit the bike to you, and the sizing of the bike itself. It’s more than just measuring your height, reach and inseam. With the help of Bike Fitting, you’ll be able to find the right fit for your frame size, style of riding, and your particular dimensions. Here ya’ go…..the location for everything fit related.

Sliding forward in saddle

Old 06-08-19, 04:38 PM
  #1  
bicyclepost
Newbie
Thread Starter
 
Join Date: Jul 2018
Location: Ottawa, ON
Posts: 53

Bikes: 2022 Kona Rove, 1991 Bianchi Ibex drop-bar conversion, 1974 Peugeot AE8 singlespeed

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 36 Post(s)
Liked 5 Times in 2 Posts
Sliding forward in saddle

Hello,

I got a used bike a couple months ago and am still trying to adjust it to fit just right. It's the proper frame size for me (56 cm top tube and I'm 5'10") but it's an old mountain bike frame converted into a touring set up so I imagine the geometry is different (for example it has a shorter seat post and standover height than a 56 cm road bike). I feel like I'm sliding forward in my seat a bit and can't figure out why. I have it maybe 90% of the way back on the rails to work for the KOPS method of saddle fore/aft and have the seat level. I'm wondering if maybe the shape of the seat has something to do with it as it is not flat. Any ideas? I'm really considering just going for a bike fit but I'm so close to getting it right and I mainly commute and maybe every week or two do a 20 km ride.
bicyclepost is offline  
Old 06-08-19, 04:50 PM
  #2  
jadocs
Senior Member
 
jadocs's Avatar
 
Join Date: Jul 2018
Location: USA
Posts: 2,192

Bikes: Ti, Mn Cr Ni Mo Nb, Al, C

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 942 Post(s)
Liked 526 Times in 349 Posts
KOPS is a starting point not the end state. Your riding style, flexibility and center of gravity all determine optimal seat fore/aft position. Your riding style may be telling you your seat should go forward, it could also be the reach is too long for you, etc. Impossible to diagnose without you getting fit.
jadocs is offline  
Old 06-08-19, 10:38 PM
  #3  
Carbonfiberboy 
just another gosling
 
Carbonfiberboy's Avatar
 
Join Date: Feb 2007
Location: Everett, WA
Posts: 19,500

Bikes: CoMo Speedster 2003, Trek 5200, CAAD 9, Fred 2004

Mentioned: 115 Post(s)
Tagged: 0 Thread(s)
Quoted: 3872 Post(s)
Liked 1,920 Times in 1,369 Posts
If that post isn't infinitely adjustable, i.e. a 2-bolt adjustment, getting a post which is might be a good start. Very small saddle tilt adjustments make a big difference. Looks like a post with more set-back would be a good idea, too. Velo Orange makes some, others also. Issue might be that you'll need a longer than usual post.

Do your hands feel light on the bars?
__________________
Results matter
Carbonfiberboy is offline  
Old 06-09-19, 04:04 PM
  #4  
bicyclepost
Newbie
Thread Starter
 
Join Date: Jul 2018
Location: Ottawa, ON
Posts: 53

Bikes: 2022 Kona Rove, 1991 Bianchi Ibex drop-bar conversion, 1974 Peugeot AE8 singlespeed

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 36 Post(s)
Liked 5 Times in 2 Posts
Originally Posted by Carbonfiberboy
If that post isn't infinitely adjustable, i.e. a 2-bolt adjustment, getting a post which is might be a good start. Very small saddle tilt adjustments make a big difference. Looks like a post with more set-back would be a good idea, too. Velo Orange makes some, others also. Issue might be that you'll need a longer than usual post.

Do your hands feel light on the bars?
Ya I think I could be helped with a slight tilt. When the seat tilts it can only click into set angles and the first click is angled way too far up. My hands feel fairly light at the beginning of my ride but after maybe 10 minutes I find myself placing more weight on them. I feel like if I don't consciously think about keeping my hands light I put too much weight on them.
bicyclepost is offline  
Old 07-03-19, 04:28 PM
  #5  
berner
Senior Member
 
Join Date: May 2010
Location: Bristol, R. I.
Posts: 4,340

Bikes: Specialized Secteur, old Peugeot

Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 663 Post(s)
Liked 496 Times in 299 Posts
If you are sliding forward, and as it appears, your saddle is level. it may be a bit further forward is where you need to be. Since it does not cost anything to slide the saddle forward, go ahead and try a cm adjustment. Mark the rails somehow so that if the change does not work out, you can get back to the old position.
berner is offline  
Old 07-03-19, 05:36 PM
  #6  
Lemond1985
Sophomore Member
 
Lemond1985's Avatar
 
Join Date: Jan 2019
Posts: 2,690
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 1628 Post(s)
Liked 1,057 Times in 631 Posts
What I would do (YMMV) is tilt the saddle back ever so slightly, so that your hips are firmly planted on the seat and not sliding forward constantly. I think having them anchored is important. Might make riding in the drops less than ideal, but it's what i would do, FWIW.

Also, I have done a couple MTB to drop bar conversions, and found it impossible to get comfortable on them. Thought it would be a cinch, but it was anything but, and finally gave up.
Lemond1985 is offline  
Old 07-04-19, 10:08 AM
  #7  
Carbonfiberboy 
just another gosling
 
Carbonfiberboy's Avatar
 
Join Date: Feb 2007
Location: Everett, WA
Posts: 19,500

Bikes: CoMo Speedster 2003, Trek 5200, CAAD 9, Fred 2004

Mentioned: 115 Post(s)
Tagged: 0 Thread(s)
Quoted: 3872 Post(s)
Liked 1,920 Times in 1,369 Posts
You could simply switch to a flat saddle with a similar size and shape.
__________________
Results matter
Carbonfiberboy is offline  
Old 07-04-19, 11:10 AM
  #8  
phughes
Senior Member
 
phughes's Avatar
 
Join Date: Mar 2011
Posts: 3,057
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 1018 Post(s)
Liked 1,246 Times in 719 Posts
Check seat height too. Your seat may be a bit too high. Excessive reach may also be a factor, you may want to try a shorter stem.

For seat height, try this method: https://www.stevehoggbikefitting.com...ard-can-it-be/ There is also information on setting seat setback on his site that you may want to look at.
phughes is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
darktardis
Fitting Your Bike
6
06-05-19 12:34 PM
Bahnzo
Fitting Your Bike
12
08-05-16 04:21 PM
turtletop
Bicycle Mechanics
11
10-22-14 11:09 AM
kingsqueak
Clydesdales/Athenas (200+ lb / 91+ kg)
4
09-04-13 05:30 PM
RSWingman
Road Cycling
17
10-12-12 07:05 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 © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.