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

Swapping out suspension fork for a rigid one

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.

Swapping out suspension fork for a rigid one

Old 05-04-18, 03:52 PM
  #1  
ammarolli
Senior Member
Thread Starter
 
Join Date: May 2015
Location: Reykjavík
Posts: 194

Bikes: Trek Crossrip 2 2017, Cube Cruve Pro 2015 and Berlín Dutch Bike 3 speed 2014

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 41 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Swapping out suspension fork for a rigid one

I have a hybrid/trekking disc brake bike with rockshox paragon suspension fork with 60mm travel.
I never use the suspension so I want to lighten the bike with a rigid one.

What do I need to think of when I buy a new fork and are there any forks out there that you would recommend for me?
ammarolli is offline  
Old 05-04-18, 06:45 PM
  #2  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 15,050

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2973 Post(s)
Liked 1,259 Times in 882 Posts
To start with find out the OEM fork's steerer dimensions, the headset dimensions and the stem's dimensions. Then move to the wheel/tire size. The fork's axle to fork crown length needs to be known. The brake mount type is another spec.

All this is to insure the basic compatibility. next up is how the new fork effects the steering/handling. If the replacement fork duplicates the axle to crown dimension then the fork's rake being the same will insure nearly same handling.

Experienced service shop people are familiar with the half dozen, or more, specs that determine a good fork fit, or not. This is one aspect of bike repair that if the owner is still asking a lot of questions after an initial post I strongly suggest letting someone who knows more help out, and this should be someone who you can stand in front of too, not only type to. Andy
Andrew R Stewart is offline  
Old 05-04-18, 07:22 PM
  #3  
FrenchFit 
The Left Coast, USA
 
FrenchFit's Avatar
 
Join Date: Feb 2008
Posts: 3,757

Bikes: Bulls, Bianchi, Koga, Trek, Miyata

Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 361 Post(s)
Liked 23 Times in 16 Posts
Yep, you need to know stuff to get the right rigid. Not sure you want to tackle this without hands-on help.

But I'm posting because I did this switch on a MTB commuter, and found I really didn't like the rigid and expensive carbon fork much, though it was a perfect replacement. It turned out that sus fork did a good job of smoothing out a lot of misc. road chatter that I noticed immediately when I switched to the carbon fork. Moral of the story, my carbon fork went up on ebay, make sure you know what you're getting into.
FrenchFit is offline  
Old 05-04-18, 07:44 PM
  #4  
fietsbob
Banned
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,599

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,320 Times in 830 Posts
a search term suspension corrected fork ..
data: crown race to axle center is how long, offset head tube axis to axle center is effecting trail your steering feel

Measure.. Go...
fietsbob is offline  
Old 05-04-18, 07:48 PM
  #5  
IslandTimePE
dirtroadcycling.ca
 
Join Date: Apr 2011
Location: Charlottetown, PE
Posts: 99

Bikes: 2016 Giant Revolt, 1985 Miyata Two Ten, 1987 Steve Bauer Chinook, 2005 Giant Rainier

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 22 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
To ensure fit, you need to know:

-Headset/Steerer tube diameter - typical sizes include 1" for older bikes, 1 1/8 and a few others. If yu kave the original speces for your bike, this should be included.
-Wheel Size - 26", 29"/700c
- brake type: rim brakes or disc brakes
- axle to crown length of current fork. Replacement forks are made to correct for axle to crown length of typical suspension forks.

Surley make some quality replacement forks: https://surlybikes.com/parts/forks I put one on my old mountain bike last summer.
Nashbar also sell some pretty economical options https://www.bikenashbar.com/cycling/...ce:&pageSize:&

If you are comfortable doing maintenance on your bike, such as replacing a headset or changing your own chain, I think you can consider doing it yourself. If not, better to go to a shop.
IslandTimePE is offline  
Old 05-04-18, 09:15 PM
  #6  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 15,050

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2973 Post(s)
Liked 1,259 Times in 882 Posts
Originally Posted by ammarolli View Post
I have a hybrid/trekking disc brake bike with rockshox paragon suspension fork with 60mm travel.
I never use the suspension so I want to lighten the bike with a rigid one.

What do I need to think of when I buy a new fork and are there any forks out there that you would recommend for me?
When I first read this OP I noted this (I bolded it here). Unless the suspension is completed locked out (by design or consequence) the Op is using the travel. What I think the OP means is that he never sees the advantage of the suspension whether it's functioning or not. Andy
Andrew R Stewart is offline  
Old 05-05-18, 04:27 AM
  #7  
ammarolli
Senior Member
Thread Starter
 
Join Date: May 2015
Location: Reykjavík
Posts: 194

Bikes: Trek Crossrip 2 2017, Cube Cruve Pro 2015 and Berlín Dutch Bike 3 speed 2014

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 41 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by IslandTimePE View Post
To ensure fit, you need to know:

-Headset/Steerer tube diameter - typical sizes include 1" for older bikes, 1 1/8 and a few others. If yu kave the original speces for your bike, this should be included.
-Wheel Size - 26", 29"/700c
- brake type: rim brakes or disc brakes
- axle to crown length of current fork. Replacement forks are made to correct for axle to crown length of typical suspension forks.

If you are comfortable doing maintenance on your bike, such as replacing a headset or changing your own chain, I think you can consider doing it yourself. If not, better to go to a shop.
Thanks for the info.
The bike is has 1 1/8" steerer tube, 700/29" wheels, disc brakes and 477mm axle to crown length.
I'm going to check out the surly forks.

I'm not very handy by nature so I'm going to let store replace the fork.
ammarolli is offline  
Old 05-05-18, 05:24 AM
  #8  
ammarolli
Senior Member
Thread Starter
 
Join Date: May 2015
Location: Reykjavík
Posts: 194

Bikes: Trek Crossrip 2 2017, Cube Cruve Pro 2015 and Berlín Dutch Bike 3 speed 2014

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 41 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Anyway thinking about buying the Salsa CroMoto Grande Straight 29 would that be ok for my bike?
ammarolli is offline  
Old 05-05-18, 07:32 AM
  #9  
fietsbob
Banned
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,599

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,320 Times in 830 Posts
short on that data, for your fork and the
the Salsa CroMoto Grande Straight 29
find it yet ?
crown race to axle center is how long,?
offset; head tube axis to axle center is effecting trail your steering feel
Salsa is another QBP brand name .
fietsbob is offline  
Old 05-05-18, 08:24 AM
  #10  
ammarolli
Senior Member
Thread Starter
 
Join Date: May 2015
Location: Reykjavík
Posts: 194

Bikes: Trek Crossrip 2 2017, Cube Cruve Pro 2015 and Berlín Dutch Bike 3 speed 2014

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 41 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by fietsbob View Post
short on that data, for your fork and the find it yet ?
Salsa is another QBP brand name .
Here you go Axle to Crown:468 mmOffset: 45mm

Salsa, Surly or wherever is all the same QBP ****.
ammarolli is offline  
Old 05-05-18, 10:50 AM
  #11  
70sSanO
Senior Member
 
70sSanO's Avatar
 
Join Date: Feb 2015
Location: Mission Viejo
Posts: 3,586

Bikes: 1986 Cannondale SR400 (Flat bar commuter), 1988 Cannondale Criterium XTR, 1992 Serotta T-Max, 1995 Trek 970

Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 1036 Post(s)
Liked 842 Times in 561 Posts
You should be fine. Your 65mm Paragon has an axle-crown of 477mm. With a guesstimate sag of 20% that gives you 464mm. The Salsa fork axle-crown is 468mm. 4mm makes no difference. The offsets are the same.

John
70sSanO is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Seba P
Bicycle Mechanics
8
06-17-16 07:15 AM
ToddBlackstone
Bicycle Mechanics
13
06-05-12 12:05 PM
fujiyamamoto
Hybrid Bicycles
2
10-28-11 07:37 PM
ALLSTOTT
Commuting
6
09-29-10 07:36 AM
bamster
Bicycle Mechanics
4
08-09-10 04:22 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 - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.