Snapped fork steerer – anyone ever seen this happen?

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  • Snapped fork steerer – anyone ever seen this happen?
  • geetee1972
    Member

    Friend of mines posted this picture of his mate’s bike on last night’s ride:

    I’ve never seen a fork steerer snap. And yes, apparently he was just JRA, not even riding off road when it happened.

    Premier Icon geoffj
    Subscriber

    😯

    Ham fisted overtightening of stem?

    messiah
    Member

    Snapped a one inch steerer at the crown BITD but never at the top like that… *doffs hat* well done sir!

    Premier Icon wwaswas
    Subscriber

    overtightened stem bolts?

    Edric 64
    Member

    How tight was the stem done up and how much steerer was in the stem?

    geetee1972
    Member

    How much steerer was in the stem was my first thought but if you look closely, you can see that the open back of the stem itself is still filled in with the snapped off steerer.

    Herman Shake
    Member

    Valves out of line with tyre logos?

    Edric 64
    Member

    I can see that now I have had a closer look.

    messiah
    Member

    Star fangled nut damage inside the aluminium steerer?

    shermer75
    Member

    What kind of forks were they?

    strike
    Member

    What forks are they?

    messiah
    Member

    Have the forks been on another bike with a longer headtube and a Chris King headset which has scored the steerer tube right where it has now failed?

    Premier Icon dday
    Subscriber

    😯 That is odd.
    I would have though that overtightened bolts would cause a clean shear, not the shape of the the break shown (but that’s guesswork on my part)

    Possible that weather had something to do with it? Maybe some water got in there, froze, and caused extra pressure?

    geetee1972
    Member

    I asked the same question about what kind of forks they are. I don’t recognise them (this despite my geeky encyclopedic knowledge of bike kit!) πŸ˜€

    shermer75
    Member

    I asked the same question about what kind of forks they are. I don’t recognise them (this despite my geeky encyclopedic knowledge of bike kit!)

    Ahhh Watson, a clue!! The hunt is on!! πŸ˜‰

    shermer75
    Member

    Er… how do you quote? πŸ˜‰

    Premier Icon jam bo
    Subscriber

    you need to close the quote with [/quote]

    but back on topic. never seen one like that…

    shermer75
    Member

    you need to close the quote with but back on topic. never seen one like that…

    Thanks!

    mattzzzzzz
    Member

    It will polish out 😯

    I’ve snapped my road bike mid steerer JRA.

    The fact I’d ridden it down the beast the day before might have had something to do with it though.

    mr plow
    Member

    It is cracking season! :mrgreen: Don’t ride your bikes!!!!!!! 😯 πŸ˜†

    rocketman
    Member

    far too many spacers under the stem imo

    Premier Icon tmb467
    Subscriber

    Nice to see someone else on an Enduro Elite

    parkedtiger
    Member

    Did the same a couple of years ago coming off Blencathra:

    183593_10150103058218789_4934565_n

    Apologies – it’s not too clear an image, but the steerer broke just above the star fangled nut in a very similar fashion to the OPs. Forks were 140 Bombers, about five years old; no other signs of damage from the SFN and the stem bolts weren’t overtightened.

    retro83
    Member

    thisisnotaspoon – Member

    I’ve snapped my road bike mid steerer JRA.

    The fact I’d ridden it down the beast the day before might have had something to do with it though.

    Good effort πŸ˜€

    geetee1972
    Member

    Did the same a couple of years ago coming off Blencathra:

    That picture looks like it was taken at night. Fair play for riding up and down Blencathra on a night ride!

    messiah
    Member

    From the picture that could be an old Manitou Sherman/Travis/Nixon fork?

    Premier Icon ononeorange
    Subscriber

    Was the headset delievered a day late due to snow? That’s probably your problem.

    LoCo
    Member

    Seen several of forks having done that, usually due to scores, earlier damage crash/bad installation or actual material defect.

    toys19
    Member

    lights too powerful..

    scruff
    Member

    Too many spacers. Correct amount = 0.

    parkedtiger
    Member

    That picture looks like it was taken at night. Fair play for riding up and down Blencathra on a night ride!

    Night time = no walkers πŸ˜‰

    messiah
    Member

    If he takes off the spacers he can keep using that fork 😈

    Premier Icon Paceman
    Subscriber

    This happened to my riding buddy a few months ago (Darkcyan on the forum). The steerer on his Fox Talas forks snapped in the same place with a very similar looking tube breakage. Incidentally he was also using a Chris King headset although there was no evidence that it had casued any damage or scoring to the steerer tube. Since the tube was now too short to use with his frame he had to send the forks back to Mojo to have the whole fork uppers replaced; they come as one unit steerer, crown and stantions. I don’t think this was mega-expensive and was far more economical than replacing the forks, especially as they serviced them at the same time. The breakage occured landing a small log jump but certainly nothing that should cause a steerer failure. More importantly he wasn’t injured!

    giantx4
    Member

    Yep i had exactly to same mate!….
    Christ knows how….was your mate using a headlock bolt through thingy instead of star fangled type topcap????…. if stearer was a tad too long the headlock would effectively squash headtube when tightening the capbolt,thus cracking headtube….thats the theory i came up with re mine anyway……i cut damage off stearer & sold fork as was perfect after damaged part removed from steerer,& bought nother pairv forks with longer steerer….what a pisser it was!…. new years eve 2 yr ago i discover it..ARRGGGHHHHH!

    ruffride
    Member

    There’s some left take the stackers off an cut it straight then just put stem on front end will just be lower

    ti_pin_man
    Member

    you were lucky. My alu steerer tube snapped 100mm up from the fork crown within the headtube, I have a false tooth and about 48 stitches because of this, about 25 inside my mouth and the rest on my face. Plus a hatred of a certain fork manufacturer.

    Premier Icon michaelbowden
    Subscriber

    ti_pin_man – Member
    you were lucky. My alu steerer tube snapped 100mm up from the fork crown within the headtube, I have a false tooth and about 48 stitches because of this, about 25 inside my mouth and the rest on my face. Plus a hatred of a certain fork manufacturer.

    ^^^^^^ OUCH!

    labsey
    Member

    Is there a nail in the tyre?

    Seriously though, no idea other than stuff that’s been suggested. Good effort though.

    Premier Icon dday
    Subscriber

    Thanks ti_pin. Now I’m going to get the sh1t’s about my steerer tonight πŸ™

Viewing 40 posts - 1 through 40 (of 71 total)

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