What is a Tapered Steerer Fork & a Straight Steerer Fork. Need Help in changing Fork.- Mtbr.com
Results 1 to 6 of 6
  1. #1
    mtbr member
    Reputation:
    Join Date
    Jan 2007
    Posts
    26

    What is a Tapered Steerer Fork & a Straight Steerer Fork. Need Help in changing Fork.

    Hi Guys,

    Need your advise in explaining what is a Tapered Steerer Fork and a Straight Steerer Fork?

    Can a Tapered Steerer Fork fit a Straight Steerer Fork Headset or Headtube?

    I am currently using a Straight Steerer Fork (RockShox J3), can I change and fit a Tapered Steerer Fork to my frame? Do I need a special adapter for it?

    I am planning to buy and install a Tapered Steerer Fork but not sure if it fits my bike Frame, Headtube and Headset. Below is the link of the Front Fork I want to get:
    29ER Fork

    My current bike model is: 2006 - KHS Alite 3000:
    KHS Bicycles :: Alite 3000

    Can anyone advise what are the specifications of my Bike Frame, Headtube and Headset. And do i need to change the Headset to fit the Tapered Steerer Fork from Hongfu Bikes?

    Here are photos of my current bikes Headtube and Front Fork:
    https://picasaweb.google.com/1019106...1226/FrontFork

    Please advise, thanks much!

  2. #2
    Just Joshin' ya!
    Reputation: PrincipalRider's Avatar
    Join Date
    Jun 2005
    Posts
    1,979
    No, this will not work. A tapered fork requires a 1.5 inch bottom and it tapers to 1.125 inches at the top. Your KHS has an internal headset for a 1.125 or 1 and 1/8th inch straight steerer tube. Any 1 and 1/8th inch straight steerer fork should work (as long as it meets your bikes travel or axle to crown constraints) as long as you have an internal headset. I am very certain a 1.5 inch bottom headset cup will not fit in your frame. Do not buy a tapered fork. Just find a straight tube steerer fork at 1 and 1/8th inch diameter. There are no adapters that will make this work. Don't do it.
    Getting a dropper post is like getting a bidet. I didn't know I needed one until I get one and boy, does my ass thank me.

  3. #3
    mtbr member
    Reputation:
    Join Date
    Jan 2007
    Posts
    26
    Quote Originally Posted by PrincipalRider View Post
    No, this will not work. A tapered fork requires a 1.5 inch bottom and it tapers to 1.125 inches at the top. Your KHS has an internal headset for a 1.125 or 1 and 1/8th inch straight steerer tube. Any 1 and 1/8th inch straight steerer fork should work (as long as it meets your bikes travel or axle to crown constraints) as long as you have an internal headset. I am very certain a 1.5 inch bottom headset cup will not fit in your frame. Do not buy a tapered fork. Just find a straight tube steerer fork at 1 and 1/8th inch diameter. There are no adapters that will make this work. Don't do it.
    Thanks for the information.

    Do you or anybody have any recommendation for a Straight Steerer Carbon Fork, with Axle to Crown at 470mm, weighing at around 500 ~ 600 grams?

    It seems very hard to find, but I am trying to find a Straight Steerer Carbon Fork with A-C at 470mm to keep the geometry the same at 100mm, for a corrected 100mm suspension fork.

    I was just wondering if a Product says 29" Carbon Rigid Fork Straight Steerer, and the A-C at 470mm, can i still use it on my 26" bike?

    Please advise!

    Thanks.

  4. #4
    Just Joshin' ya!
    Reputation: PrincipalRider's Avatar
    Join Date
    Jun 2005
    Posts
    1,979
    If the axle to crown measurements are the same and the fork is a disc fork, it should work. I also found these on Ebay.

    2013 New Trigon MTB 3K Full Carbon Rigid Fork Disc V Brake Compatible MC01 | eBay
    Getting a dropper post is like getting a bidet. I didn't know I needed one until I get one and boy, does my ass thank me.

  5. #5
    mtbr member
    Reputation:
    Join Date
    Aug 2008
    Posts
    5,021
    A tapered fork "CAN" fit in your frame. You just need an external headset cup that fits into a zero stack 44mm head tube: Cane Creek 40 Series 44 Tapered Headset | Competitive Cyclist


    What is a Tapered Steerer Fork & a Straight Steerer Fork. Need Help in changing Fork.-xx_44mm_traditional_profile-648x399.jpg

    You just have to make sure the depth of the headtube has enough room for the cup to slide in.

  6. #6
    B A N N E D
    Reputation:
    Join Date
    Apr 2007
    Posts
    5,120
    Quote Originally Posted by fodio View Post
    Thanks for the information.

    Do you or anybody have any recommendation for a Straight Steerer Carbon Fork, with Axle to Crown at 470mm, weighing at around 500 ~ 600 grams?

    It seems very hard to find, but I am trying to find a Straight Steerer Carbon Fork with A-C at 470mm to keep the geometry the same at 100mm, for a corrected 100mm suspension fork.

    I was just wondering if a Product says 29" Carbon Rigid Fork Straight Steerer, and the A-C at 470mm, can i still use it on my 26" bike?

    Please advise!

    Thanks.
    You need a fork with about a 450mm axle to crown measurement to keep the geometry the same not a fork with a axle to crown measurement of 470mm.

    When you subtract 20 to 25% sag off a 100mm suspension fork with a fully extended axle to crown measurement of 470mm you'll be riding it at a axle to crown measurement of around 450mm.

    A 26" rigid fork that's 100mm suspension correct will have a axle to crown measurement of about 450mm, suspension corrected means that it'll keep the same geometry as what you'll get with a 100mm suspension fork.

Similar Threads

  1. 1 1/8 Straight Steerer tube To 1.5 Tapered tube Fork Conversion
    By xOffxThexLipx in forum General Discussion
    Replies: 8
    Last Post: 03-06-2014, 09:25 PM
  2. Replies: 6
    Last Post: 07-20-2012, 12:47 PM
  3. Straight steerer fork on Superfly?
    By manamana in forum Trek
    Replies: 8
    Last Post: 06-29-2012, 12:17 PM
  4. Straight steerer fork in a tapered headtube?
    By Yuri Natenpuhl in forum Shocks and Suspension
    Replies: 5
    Last Post: 04-26-2012, 03:56 PM
  5. Replies: 10
    Last Post: 01-27-2011, 06:12 PM

Members who have read this thread: 7

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

THE SITE

ABOUT MTBR

VISIT US AT

© Copyright 2019 VerticalScope Inc. All rights reserved.