Forks 650b /26 frame

geordiebrian
geordiebrian Posts: 63
edited April 2016 in MTB workshop & tech
Anyone tried to put a 650b fork on a 26 inch frame there's not a lot of different in the size

Comments

  • dusk
    dusk Posts: 583
    I've got 650b Mattocs on a 26 Cotic BFe, it works great
    YT Wicked 160 ltd
    Cotic BFe
    DMR Trailstar
    Canyon Roadlite
  • Herdwick
    Herdwick Posts: 523
    You'll get a slghtly twitchier steering and raise your front a 1/2 an inch as the 27,5 forks are a bit taller, you can fix the later by removing some spacers from under the stem to drop your bar.
    “I am a humanist, which means, in part, that I have tried to behave decently without expectations of rewards or punishments after I am dead.”
    ― Kurt Vonnegut
  • The Rookie
    The Rookie Posts: 27,812
    Steering will be slightly slower not twitchier as the head angle is slackened, fitting spacers won't change that at all. Herdwick seems to have got himself very confused.
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • rockmonkeysc
    rockmonkeysc Posts: 14,774
    I replaced a 150mm 26" fork with a 140mm 27.5" fork on my old Nukeproof Mega 26". Made no difference to how the bike rode. 27.5" forks are generally 10mm longer than 26" but some 26" forks are longer than others anyway.
    Transition Patrol - viewtopic.php?f=10017&t=13070235
  • Herdwick
    Herdwick Posts: 523
    The Rookie wrote:
    Steering will be slightly slower not twitchier as the head angle is slackened, fitting spacers won't change that at all. Herdwick seems to have got himself very confused.

    No, not ar all confused, the steering will be a bit twitchier because of the extra rake the 27,5 forks have to compensate for the bigger dia wheel,

    He can remove spacers under the stem if he runs any, to compensate for the extra 1/2 inch the front will raise as the 650b forks of the same travel as a 26er, have roughly 1/2 inch more axle to crown length. Just to get the bar height ok, if he is troubled much.
    “I am a humanist, which means, in part, that I have tried to behave decently without expectations of rewards or punishments after I am dead.”
    ― Kurt Vonnegut
  • rockmonkeysc
    rockmonkeysc Posts: 14,774
    Mine certainly didn't get more twitchy when I swapped the 26" forks for 650b. Felt pretty similar to how it was before, maybe a little more stable due to the extra rigidity from going up to 35mm stanchions from 32mm.
    Transition Patrol - viewtopic.php?f=10017&t=13070235
  • The Rookie
    The Rookie Posts: 27,812
    Herdwick wrote:
    The Rookie wrote:
    Steering will be slightly slower not twitchier as the head angle is slackened, fitting spacers won't change that at all. Herdwick seems to have got himself very confused.

    No, not ar all confused, the steering will be a bit twitchier because of the extra rake the 27,5 forks have to compensate for the bigger dia wheel,

    He can remove spacers under the stem if he runs any, to compensate for the extra 1/2 inch the front will raise as the 650b forks of the same travel as a 26er, have roughly 1/2 inch more axle to crown length. Just to get the bar height ok, if he is troubled much.
    Not all 650B forks use the extra trail, in fact I'd say it's a minority.
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.

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