Fork offset on Vertex RSL anyone?- Mtbr.com
Results 1 to 5 of 5
  1. #1
    mtbr member
    Reputation:
    Join Date
    May 2008
    Posts
    44

    Fork offset on Vertex RSL anyone?

    Cheers, any one happen to know what fork offset Rocky uses on Vertex RSL hardtails? Eg 51mm or 44mm or something else? Looking to upgrade my fork but can't seem to find offset specs anywhere...

  2. #2
    ups and downs
    Reputation: rockyuphill's Avatar
    Join Date
    Nov 2004
    Posts
    15,585
    I'm reasonably sure that Rocky has always stuck with 51mm offset fork on 29" wheel bikes. If you have the bike, you can measure the offset between the axle and the steer tube to confirm that
    I'm a member of NSMBA and IMBA Canada

  3. #3
    mtbr member
    Reputation: RMB-PM's Avatar
    Join Date
    Apr 2009
    Posts
    519
    51mm is correct
    Director of Product
    Rocky Mountain Bicycles

  4. #4
    mtbr member
    Reputation:
    Join Date
    May 2008
    Posts
    44
    Thanks guys. Thinking about a fork update. Really like the Vertex feel but with the popularity of 44mm forks I'm wondering if it would be better or worse...

  5. #5
    ups and downs
    Reputation: rockyuphill's Avatar
    Join Date
    Nov 2004
    Posts
    15,585
    I'll just add to the confusion by linking to two articles that discuss the difference but draws few conclusions.

    "Youíll lose a bit of wheelbase but it may be a price worth paying if youíre all about the steep and twisty stuff. Youíll also need to think about how long your bikeís reach is. If your bike is on the short side, itís arguably better to stick with the 51mm offset."

    Fork offset: what is it and how does it affect your riding? - MBR

    "Strange things happen when you change your fork offset. The front end of your bike drops a tiny bit, but not enough to change the head or seat angle measurements appreciably (although your BB does drop a mm or so). As well, your wheelbase lengthens (a bit less than 5mm) and your trail shrinks (a bit more than 5mm). Compared to your base case you have less trail, more wheelbase and a higher bottom bracket. What does this mean? Beats the hell out of me. Itís interesting to see that a change in offset has a much larger impact on trail than one would intuitively assume. Youíre probably looking at 20mm of additional travel or a full degree in head angle change to bring it back to where it was before you changed your offset, but thatís also going to take your BB quite a bit higher."

    https://nsmb.com/articles/demystifyi...set-and-trail/
    I'm a member of NSMBA and IMBA Canada

Similar Threads

  1. Replies: 5
    Last Post: 09-07-2016, 02:33 AM
  2. 1992 Rocky Mountain Vertex - First Vertex (Steel)
    By Romax in forum Vintage, Retro, Classic
    Replies: 4
    Last Post: 10-17-2014, 07:21 PM
  3. Anyone riding a Vertex RSL?
    By machine4321 in forum Eastern Canada
    Replies: 1
    Last Post: 07-24-2014, 06:46 PM
  4. RST Deuce fork for a Vertex 70 RSL?
    By myersv in forum Shocks and Suspension
    Replies: 0
    Last Post: 05-28-2012, 06:21 PM
  5. vertex rsl-xx
    By jph003 in forum Rocky Mountain
    Replies: 12
    Last Post: 01-14-2011, 07:26 AM

Members who have read this thread: 0

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 2020 VerticalScope Inc. All rights reserved.