Fist fixed gear cog change

Discussion in 'Cycling Equipment' started by Steve Braun, Jan 24, 2003.

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  1. Steve Braun

    Steve Braun Guest

    I'm pretty new to this fixed gear world and when it comes to things mechanical, I'm at a bit of a
    loss. I need to swap out rear cogs. I've successfully removed the old cog. Its reinstallation of the
    new one that I'm unclear about.

    1)Should I use Loctite?

    2) If so, which color?

    3) I assume I would apply the Loctite to the threads of the hub, not those of the cog, correct?

    4) Or. should I just grease the cog and hub threads and be on my way?

    5) As I spin the new cog on to the hub it spins freely and then gets quite difficult to turn with
    about 1/16th of an inch to go. Is this normal? (Its a new Dura-Ace cog going on to an old Suzue
    track hub.)

    6) And finally, am I correct to assume that the flange on the cog points in toward the center
    of the hub?

    Thanks for your help.

    Steve Braun Tucson

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  2. lisated

    lisated Guest

    "Steve Braun" <[email protected]> wrote:

    > I'm pretty new to this fixed gear world and when it comes to things mechanical, I'm at a bit of a
    > loss. I need to swap out rear cogs. I've successfully removed the old cog. Its reinstallation of
    > the new one that I'm unclear about.
    >
    > 1)Should I use Loctite?

    No, it's not necessary. I think a lock ring is a good idea, but if you don't use one, then make sure
    the cog is gorilla-tight. Locktite isn't strong enough to resist backpedaling forces.

    > 2) If so, which color?

    Red bikes are the fastest. (That's a joke, son.)

    > 3) I assume I would apply the Loctite to the threads of the hub, not those of the cog, correct?
    >
    > 4) Or. should I just grease the cog and hub threads and be on my way?

    Bingo.

    > 5) As I spin the new cog on to the hub it spins freely and then gets quite difficult to turn with
    > about 1/16th of an inch to go. Is this normal? (Its a new Dura-Ace cog going on to an old Suzue
    > track hub.)

    Probably a bit of mung in the threads. If the threads are clean and in good shape, just screw it
    down tight until the spacing flange butts up against the stop on the hub at the end of the threads.

    > 6) And finally, am I correct to assume that the flange on the cog points in toward the center of
    > the hub?

    Yep.

    Ted Bennett
     
  3. sjb-<< I'm pretty new to this fixed gear world and when it comes to things mechanical, I'm at a bit
    of a loss. I need to swap out rear cogs. I've successfully removed the old cog

    << 4) Or. should I just grease the cog and hub threads and be on my way?

    do this....

    << 5) As I spin the new cog on to the hub it spins freely and then gets quite difficult to turn with
    about 1/16th of an inch to go. Is this normal? (Its a new Dura-Ace cog going on to an old Suzue
    track hub.)

    As long as it's straight-just tighten it.<< \

    6) And finally, am I correct to assume that the flange on the cog points in toward the center
    of the hub?

    yessir-

    Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302
    (7)440-3535 http://www.vecchios.com "Ruote convenzionali costruite eccezionalmente bene"
     
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