Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Kinekt seatpost pre-load - how tight?

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Kinekt seatpost pre-load - how tight?

Old 04-28-23, 03:56 PM
  #1  
Junior Member
Thread Starter
 
Join Date: Jan 2020
Posts: 86
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 37 Post(s)
Liked 5 Times in 5 Posts
Kinekt seatpost pre-load - how tight?

Hi folks,
I have a Kinekt 2.1 and I have the option of running it with an Orange spring (which is pretty stiff), or a Black spring but then I need to tighten the preload to 3-4 to make the seat not bounce around too much. What would you recommend? Is a preload of "3" too much already?
Fandomii is offline  
Old 04-28-23, 04:28 PM
  #2  
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 38,980

Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

Mentioned: 141 Post(s)
Tagged: 1 Thread(s)
Quoted: 5921 Post(s)
Liked 2,806 Times in 1,568 Posts
I prefer setting preload for effect, rather than by the numbers. I like to preload using about 1/4 of the travel, so I have 3/4ths left and room for over travel on rebound.

You'll need a twist tie, pipe cleaner, or similar.

Set the preload at some logical starting place. Tie the twist tie at the base of the sliding part. Ride a few seconds on smooth pavement, then see how far up the tie has moved. Adjust preload accordingly.

Reset the tie, and leave the there for a number of rides. Ideally, it will get pushed almost to the top, meaning you're using the full travel range without bottoming out.

If you tend to bottom, use a stiffer elastomer, if not getting much travel, use a softer one.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

Just because I'm tired of arguing, doesn't mean you're right.

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is offline  
Likes For FBinNY:
Old 04-28-23, 05:19 PM
  #3  
Junior Member
Thread Starter
 
Join Date: Jan 2020
Posts: 86
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 37 Post(s)
Liked 5 Times in 5 Posts
Originally Posted by FBinNY
I prefer setting preload for effect, rather than by the numbers. I like to preload using about 1/4 of the travel, so I have 3/4ths left and room for over travel on rebound.

You'll need a twist tie, pipe cleaner, or similar.

Set the preload at some logical starting place. Tie the twist tie at the base of the sliding part. Ride a few seconds on smooth pavement, then see how far up the tie has moved. Adjust preload accordingly.

Reset the tie, and leave the there for a number of rides. Ideally, it will get pushed almost to the top, meaning you're using the full travel range without bottoming out.

If you tend to bottom, use a stiffer elastomer, if not getting much travel, use a softer one.
That is a fantastic reply and suggestion. Thank you so much - can’t believe I haven’t read about this tip before or thought of it myself.

Question - when you say having room for over travel on rebound, what do you mean?
Fandomii is offline  
Old 04-28-23, 06:21 PM
  #4  
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 38,980

Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

Mentioned: 141 Post(s)
Tagged: 1 Thread(s)
Quoted: 5921 Post(s)
Liked 2,806 Times in 1,568 Posts
Originally Posted by Fandomii
.....

Question - when you say having room for over travel on rebound, what do you mean?
If you've ever driven an empty truck you know exactly what I mean. It's like slamming a door as the post rebounds after every bump.

Imagine a scale of 0-10 with zero being fully compressed. You want the post to settle to about 8 under your weight. This way it can compress all the way to below one without bottoming out. OTOH, after a bump it will overshoot, so it can rebound to 9 without hitting the top, before settling back to 8.
FBinNY is offline  
Likes For FBinNY:
Old 04-30-23, 01:43 PM
  #5  
Junior Member
Thread Starter
 
Join Date: Jan 2020
Posts: 86
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 37 Post(s)
Liked 5 Times in 5 Posts
Any idea if keeping a preload between "2" and "3" is detrimental to the Kinekt system's durability over time?
Fandomii is offline  
Old 04-30-23, 03:55 PM
  #6  
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 38,980

Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

Mentioned: 141 Post(s)
Tagged: 1 Thread(s)
Quoted: 5921 Post(s)
Liked 2,806 Times in 1,568 Posts
The actual setting doesn't matter to the post. The key is to set it so you don't bottom out, or hit the top on rebound.

Banging into the end stops is what will kill the post fastest.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

Just because I'm tired of arguing, doesn't mean you're right.

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is offline  
Likes For FBinNY:
Old 04-30-23, 04:03 PM
  #7  
Junior Member
Thread Starter
 
Join Date: Jan 2020
Posts: 86
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 37 Post(s)
Liked 5 Times in 5 Posts
Originally Posted by FBinNY
The actual setting doesn't matter to the post. The key is to set it so you don't bottom out, or hit the top on rebound.

Banging into the end stops is what will kill the post fastest.
That makes sense! How does one tell that the seat is bottoming out?
Fandomii is offline  
Old 05-01-23, 12:43 PM
  #8  
Junior Member
Thread Starter
 
Join Date: Jan 2020
Posts: 86
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 37 Post(s)
Liked 5 Times in 5 Posts
And one more question - is it normal that the seat “jolts” up when lifting oneself from the seat?
Fandomii is offline  

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
Trackbacks are Off
Pingbacks are Off
Refbacks are 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.