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  1. #1
    Beach-Bound Collin2424's Avatar
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    126mm wheelset work in a track frame?

    Hello!

    I hope this isn't too much of a dumb question. If it is, I'll feel even dumber knowing that I was unable to answer my own question with the searches I tried!

    So I've built a few singlespeed bikes and I'm ready for a fixed gear track bike to take to the local velo. I've got a proper track frame that's spaced at 120mm and I have a wheelset I was planning on using (Mavic GP4's with Mavic hubs) and the rear is 126mm. Can I simply replace the axle with a 120mm axle? I've replace the axle on a few different road hubs, but it was always with the same size. I guess the better question is, how does an actual "track hub" differ from a "road hub?" If it's just axle length, I think this wheelset will be awesome for my intended purpose.

    Thanks a million for your help! Looking forward to riding this bad boy

    -Collin-

  2. #2
    Veteran Racer TejanoTrackie's Avatar
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    A rear road hub is designed to accept a cassette on a freehub and has a hollow axle. Older road hubs used screw-on freewheels. Track hubs are designed to accept a screw on fixed cog and a lockring, and have a solid axle. You need a track hub for use on the track. If you actually have a track hub spaced at 126mm, then its a simple matter to remove 3mm worth of spacers on each side to change it to 120mm spacing. You cannot use a road hub on the track. You can, however, use a road front hub with a hollow axle on the track if you replace the quick release with a bolt-on skewer.
    What, Me Worry? - Alfred E. Neuman

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  3. #3
    Senior Member NinetiesKid's Avatar
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    Quote Originally Posted by TejanoTrackie View Post
    A rear road hub is designed to accept a cassette on a freehub and has a hollow axle. Older road hubs used screw-on freewheels. Track hubs are designed to accept a screw on fixed cog and a lockring, and have a solid axle. You need a track hub for use on the track. If you actually have a track hub spaced at 126mm, then its a simple matter to remove 3mm worth of spacers on each side to change it to 120mm spacing. You cannot use a road hub on the track. You can, however, use a road front hub with a hollow axle on the track if you replace the quick release with a bolt-on skewer.
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    I'm going to be spending an exorbitant amount of money on electronics for this bike.

  4. #4
    Senior Member Capocaccia's Avatar
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    Quote Originally Posted by NinetiesKid View Post
    mind=blown
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    Quote Originally Posted by Scrodzilla View Post
    They sell furniture too. ****ing posers.

  5. #5
    I Like to Bike youngandcurious's Avatar
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    Brain grenade!!!

  6. #6
    Beach-Bound Collin2424's Avatar
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    Got it. Mine takes a thread-on freewheel, so I figured a thread-on cog and lock ring would work fine. Then I figured it would just be a matter of replacing the hollow quick-release axle with a solid axle. Oh well, it was worth a try because I really like this wheelset. Thanks for clarifying nonetheless.

    -Collin-

  7. #7
    Noob
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    Scroll about half way down to new wheels vs. old wheels.
    http://www.sheldonbrown.com/deakins/...onversion.html

  8. #8
    Senior Member
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    BTW, you're going to want an axle length longer than 120—otherwise your wheels are just gonna fall off.
    1988 Miele Azsora

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