Go Back  Bike Forums > Bike Forums > Mountain Biking
Reload this Page >

Tapered Forks > straight bar frame

Search
Notices
Mountain Biking Mountain biking is one of the fastest growing sports in the world. Check out this forum to discuss the latest tips, tricks, gear and equipment in the world of mountain biking.

Tapered Forks > straight bar frame

Thread Tools
 
Search this Thread
 
Old 06-07-20, 06:54 AM
  #1  
Nathanphipps
Newbie
Thread Starter
 
Join Date: Jun 2020
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Tapered Forks > straight bar frame

Can I put tapered 1 1/8-1.5 rockshox forks into a 1 1/8 straight bar frame?

Am I right in thinking that this can be done with new headset with a 1.5 bottom cup?

need help guys
Nathanphipps is offline  
Old 06-07-20, 07:17 PM
  #2  
Kapusta
Advanced Slacker
 
Kapusta's Avatar
 
Join Date: Feb 2017
Posts: 6,210

Bikes: Soma Fog Cutter, Surly Wednesday, Canfielld Tilt

Mentioned: 26 Post(s)
Tagged: 0 Thread(s)
Quoted: 2762 Post(s)
Liked 2,537 Times in 1,433 Posts
Originally Posted by Nathanphipps
Can I put tapered 1 1/8-1.5 rockshox forks into a 1 1/8 straight bar frame?

Am I right in thinking that this can be done with new headset with a 1.5 bottom cup?

need help guys
Depends on the headset size your frame takes. There are a few different sizes for 1-1/8” steer tubes.
Kapusta is offline  
Old 06-07-20, 08:04 PM
  #3  
Russ Roth
Senior Member
 
Join Date: Dec 2019
Location: South Shore of Long Island
Posts: 2,799

Bikes: 2010 Carrera Volans, 2015 C-Dale Trail 2sl, 2017 Raleigh Rush Hour, 2017 Blue Proseccio, 1992 Giant Perigee, 80s Gitane Rallye Tandem

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 1088 Post(s)
Liked 1,024 Times in 723 Posts
can't be done, by straight tube I take it to mean that you have a straight 1 1/8 headtube on the frame, in which case the bottom cup for a tapered fork won't fit in the frame. The inner dimensions of a tapered headtube is 10mm wider at the bottom than the top and it can't be made to fit. The reverse is possible. If you have a tapered headtube and a straight steerer you can buy a devolution bottom race to solve the problem.
Russ Roth is offline  
Old 06-07-20, 08:29 PM
  #4  
jrhoneOC
Senior Member
 
Join Date: Aug 2019
Location: Newport Beach, Ca.
Posts: 147

Bikes: 2021 Specialized Chisel

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 64 Post(s)
Liked 58 Times in 40 Posts
Well the only way I know to do this is to buy an adapter. It goes at the bottom of the head tube and is a bugger diameter to accept a tapered fork...this will raise the front of the bike higher because you are essentially putting a spacer between the headtube and the shock. I dont know how raising it slightly will affect the geometry of the bike. Cane Creek EC44 is the adapter...it will only work on some bikes so it still depends on the bike itself and whether it has internal or external bearings. Adds about .5 degree in headtube angle...
jrhoneOC is offline  
Old 06-08-20, 03:03 AM
  #5  
cobba
Senior Member
 
Join Date: Aug 2006
Posts: 1,895
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 184 Post(s)
Likes: 0
Liked 67 Times in 53 Posts
The head tube needs to have a minimum internal diameter of 44mm to use a 1.5" tapered steering tube.

https://www.jensonusa.com/Cane-Creek...r_psugg_q=ec44
cobba 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



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.