Mountain Bikes · Public discussion

Help ....steertube!!

Started by mtbchip · · Last activity · 25 posts · 1,315 views

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Mountain Bikes
Published
4 April 2004
Last activity
6 April 2004
Original author
mtbchip
Posts
25
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  1. S o r n i said:
    Quoted message said:

    Does that not wreck your aerodynamics? j/k

    No, just his testicles.

    When I first put on my new stem, I was really nervous about cutting it
    short and ended up with this stack of spacers sticking about an inch above
    the stem. Just LOOKING at the damn thing was kinda scary!

    --
    -BB-
    To reply to me, drop the attitude (from my e-mail address, at least)

  2. Quoted message said:

    About an inch.........arrrgggghhhhhhhh

    I myself would put cut my losses and put it on eBay ASAP, unless you can get
    another steerer pressed in.

    --
    Phil, Squid-in-Training

  3. mtbchip <[email hidden]> wrote in message news:<[email hidden]>...

    Quoted message said:

    Cut too much steer tube...other than buy a new fork, what can be done?

    Mtbchip

    Well, you're not in hong kong I suppose, but we've got a guy who has
    access to liquid nitrogen so you can cool the steerer and remove it,
    then shove in a new (frozen)one.This would also probably work with a
    freezing jacket for pipe repairs.Try and find a commercial pipe
    fitter.

    g

  4. mtbchip <[email hidden]> wrote in message news:<[email hidden]>...

    Quoted message said:

    Cut too much steer tube...other than buy a new fork, what can be done?

    I am almost sure (if this advice has not already been handed down)
    that Marzocchi will press in a new steer tube for you. This mistake
    will cost you some dough - shipping both ways, the new steer tube, and
    the charge to press it in. I'd skip the liquid nitrogen advice, too
    much to go wrong, and plenty of ways to hurt/cold-burn yourself.
    Chalk up the expense of the replacement to a lesson learned.

    The advice on how to measure and cut is the best I've heard so far:

    With fork race installed, slide the steerer up through your
    already-installed headset, slide any spacers on that you need, clamp
    on your stem, measure down from the top end of the steerer. Add *to
    that* measurement 3mm (some stems, like Thomson, require more
    clearance 5-7mm, IIRC). Mark the steerer with a pencil or Sharpie,
    then measure the top-of-steerer to stem again to verify your first
    number. Take the fork out, then measure it again, to see if the place
    you actually want to cut is actually 3mm below the line you drew. If
    so, make a mark at that 3mm-below line. Wrap some tape around the
    steerer such that an edge is *between* the low mark and the high mark.
    Cut the tube (I prefer a hacksaw to a tubing cutter.) File the cut
    surface smooth and perpendicular to the long axis of the steer tube.
    Give the outside edge a little chamfer such that it'll go up into the
    headset more easily. Make sure to wipe off the filings and cuttings
    so you don't get any of that into the headset grease. Take off the
    tape, and re-install the fork into the headset. You should still have
    a little more to file down, but a steel file on an aluminum steer tube
    is knife-through butter quick. After you have filed it down to where
    it should be, then re-install just to check. Knock in the
    star-fangled nut carefully, and you're ready to put it all together.
    I use a 1" chamfered wooden dowel to set the SFN. Made it myself out
    of 1" dowel stock. 🙂

    Last time I did this, it took me less time to actually do it than to
    type this set of instructions in. Steel hacksaw blade, and steel
    file, on an aluminum steer tube really makes the job go quickly. It
    really is simple, and I've not had any problems doing it this way.
    The key is to measure, write it down, measure it again, write it down,
    and check the measurements against your calculations. Even if you
    feel silly doing it, use your calculator for an "numerical sanity
    check." Cheaper than having a new steer tube pressed in! Quicker,
    too.

    I like to do things in millimeters, because then I don't have to deal
    with any fractions. Playing in inches and fractions just begs for an
    error.

    I got this advice from a shop guy over a few beers. Cost his shop
    some money, that guy. 🙂
    --
    Jonesy

  5. On 4/5/04 1:41 AM, in article [email hidden],

    ZeeExSixAre said:
    Quoted message said:

    About an inch.........arrrgggghhhhhhhh

    I myself would put cut my losses and put it on eBay ASAP, unless you can get
    another steerer pressed in.

    --


    Marzocchi will do it for $65.

    Shipped yesterday.............

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