Syncros legs in mag21 crown- Mtbr.com
Results 1 to 9 of 9
  1. #1
    mtbr member
    Reputation: j333ssa's Avatar
    Join Date
    Oct 2004
    Posts
    119

    Syncros legs in mag21 crown

    Ok - picture this. Want to use a Syncros fork on a Toad frame which has a 1" steerer. My Syncros forks have a pressed in 1 1/8th. However I vaguelly remember that it is possible to slot in Syncros legs into the crown of a 1" Mag21 steerer and use them a a rigid fork.

    Am I correct in thinking this? Or am I looking for trouble...
    Big collector of parts always willing to trade. Disk drives, cnc items and rarities.

  2. #2
    VRC Illuminati
    Reputation: Rumpfy's Avatar
    Join Date
    Dec 2003
    Posts
    17,648
    Quote Originally Posted by j333ssa
    Ok - picture this. Want to use a Syncros fork on a Toad frame which has a 1" steerer. My Syncros forks have a pressed in 1 1/8th. However I vaguelly remember that it is possible to slot in Syncros legs into the crown of a 1" Mag21 steerer and use them a a rigid fork.

    Am I correct in thinking this? Or am I looking for trouble...

    I think you can actually, though I'm not 100% sure.

    Hollister has some Syncros legs in a Bontrager crown....with IRD steer.
    -eric-

    http://www.rumpfy.com
    Wanted: NDS Suntour XC Pro Microdrive 175mm Crank Arm.

  3. #3

    Reputation:
    Join Date
    Nov 2006
    Posts
    155
    I was also thinking of pressing 1" diameter chromoly legs into my old Mag 21 crown. There are three considerations.

    One, the tolerances. You had better be very certain that the fit is not so tight as to stress the materials, and not so loose as to possibly come apart.

    Two, that specific crown is designed for suspension. In a rigid assembly, there is no shock to limit the stresses transferred to the crown assembly.

    Three, there is the potential for rotation of the legs under braking forces. These forces are taken care of in the mag 21 by the brace.

  4. #4
    Doesntplaywellwithmorons!
    Reputation: DeeEight's Avatar
    Join Date
    Jan 2004
    Posts
    10,868
    The rockshox crowns are actually stronger than the syncros crowns (which were also aluminium), the problem is the offset of the crowns is less, and the spacing is wider, so you'll need to run a custom spaced front hub along with your brake studs being further apart you'll need to be using cantilever brakes and push the pads out further.
    I don't post to generate business for myself or make like I'm better than sliced bread

  5. #5
    velocipede technician
    Reputation: hollister's Avatar
    Join Date
    Sep 2005
    Posts
    8,876

    d:find the rest of a bontrager fork

    Quote Originally Posted by Rumpfy
    I think you can actually, though I'm not 100% sure.

    Hollister has some Syncros legs in a Bontrager crown....with IRD steer.
    came to me as part of a trade, now i have to
    a;find a frame to use it on
    b:find the rest of a syncros fork
    c:find the rest of an IRD fork
    looking for 20-21" P team

  6. #6
    Illuminati
    Reputation: scant's Avatar
    Join Date
    Jan 2004
    Posts
    1,723
    its been a real long day.. so I've read all of above... is it possible? the wider than normal hub part doesnt sound ideal?

  7. #7
    artistic...
    Reputation: colker1's Avatar
    Join Date
    Jan 2004
    Posts
    7,408
    isn't the rake of RS and other susp forks shorter than rigids? it could sc$$w up the handling.
    WTB: Bomber Z2 1 1/8 steerer, in good to excellent shape OR bomber rebuild kit.

  8. #8
    Doesntplaywellwithmorons!
    Reputation: DeeEight's Avatar
    Join Date
    Jan 2004
    Posts
    10,868
    The rake is shorter by about a 1/4" but then rockshox crowns were taller than syncros crowns and the rake is measured from the axle center, so the longer the fork the greater the rake will be.
    I don't post to generate business for myself or make like I'm better than sliced bread

  9. #9

    Reputation:
    Join Date
    Nov 2006
    Posts
    155

    Why not just buy a new rigid fork?

    There are many on the market. You can find old Kona P2s on eBay all the time, dirt cheap.

Similar Threads

  1. Repainting a MAG21
    By uphiller in forum Vintage, Retro, Classic
    Replies: 5
    Last Post: 02-19-2007, 02:15 PM
  2. Getting the most rigidity out of a MAG21
    By uphiller in forum Vintage, Retro, Classic
    Replies: 1
    Last Post: 02-03-2007, 09:03 AM
  3. Good for to replace Mag21?
    By OldBiker in forum Shocks and Suspension
    Replies: 4
    Last Post: 01-09-2006, 12:17 PM
  4. Which fork to replace Mag21?
    By OldBiker in forum Vintage, Retro, Classic
    Replies: 1
    Last Post: 01-09-2006, 09:18 AM
  5. It takes legs to ride 44-16...long, beautiful legs....
    By El Beastro in forum Singlespeed
    Replies: 6
    Last Post: 02-16-2005, 11:06 PM

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 2019 VerticalScope Inc. All rights reserved.