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  1. #1
    Senior Member Sincitycycler's Avatar
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    How can I make a 120mm track hub work with 130mm spacing?

    I have a set up 120mm track specific wheels that I would like to use to conver my brother's old Puch 6 speed. I haven't gotten his bike yet to measure, but is there some kind of way adapt the 120mm to a wider hub like 126mm or 130mm?
    "How did all those 'Keep Off the Grass' signs get there?"

  2. #2
    Sometimes knows stuff. rmfnla's Avatar
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    Add spacers between the cones & locknuts.

    You might need a longer axle.
    Today, I believe my jurisdiction ends here...

  3. #3
    Senior Member Sincitycycler's Avatar
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    Quote Originally Posted by rmfnla View Post
    Add spacers between the cones & locknuts.

    You might need a longer axle.
    Where can I get these spacers? Ebay? Any name brands. Thanks
    "How did all those 'Keep Off the Grass' signs get there?"

  4. #4
    Sometimes knows stuff. rmfnla's Avatar
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    I would take the wheel to a decent shop and ask them to sell you what you need.

    They can also measure the axle and help you determine if you need a longer one.
    Today, I believe my jurisdiction ends here...

  5. #5
    Senior Member Retro Grouch's Avatar
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    Quote Originally Posted by Sincitycycler View Post
    Where can I get these spacers? Ebay? Any name brands. Thanks
    "Spacer" in this case is just another way to say "washer".

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    I did this with an axle that I bought at my LBS, works fine. You could also order one from Harris. http://sheldonbrown.com/harris/axles.html

  7. #7
    Mad bike riding scientist cyccommute's Avatar
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    Quote Originally Posted by Retro Grouch View Post
    "Spacer" in this case is just another way to say "washer".
    He could probably pick them up at his local hardware store. He only needs 3mm on each side to space to 126mm and 5mm per side to space to 130mm. A regular flat washer per side should do it. If it's close (say 124 or 128 mm), the natural spring of the rear triangle will make up the slack.
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  8. #8
    Senior Member Sincitycycler's Avatar
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    Quote Originally Posted by cyccommute View Post
    He could probably pick them up at his local hardware store. He only needs 3mm on each side to space to 126mm and 5mm per side to space to 130mm. A regular flat washer per side should do it. If it's close (say 124 or 128 mm), the natural spring of the rear triangle will make up the slack.
    Thank you. Home Depot, here I come!
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    Quote Originally Posted by cyccommute View Post
    He could probably pick them up at his local hardware store. He only needs 3mm on each side to space to 126mm and 5mm per side to space to 130mm. A regular flat washer per side should do it. If it's close (say 124 or 128 mm), the natural spring of the rear triangle will make up the slack.
    Very true. In my case going from 120 to 130 with a thick aluminum track end there wasn't enough thread to use the track nuts.

  10. #10
    Senior Member orangepaint's Avatar
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    If it's steel, you can always cold set it.

  11. #11
    slow as I ever was Ex Pres's Avatar
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    Quote Originally Posted by orangepaint View Post
    If it's steel, you can always cold set it.

    +1, cold set the rear narrower.
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  12. #12
    cab horn
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    Quote Originally Posted by orangepaint View Post
    If it's steel, you can always cold set it.
    Er why frame mod when you can do it at the hub...?
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  13. #13
    Senior Member orangepaint's Avatar
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    Er why frame mod when you can do it at the hub...?
    No real reason to. It's probably easier to go the hub route. Just throwing more options out there in case they're useful.

  14. #14
    Sometimes knows stuff. rmfnla's Avatar
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    Quote Originally Posted by Retro Grouch View Post
    "Spacer" in this case is just another way to say "washer".
    Yep.
    Today, I believe my jurisdiction ends here...

  15. #15
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    What does cold set mean?

  16. #16
    Mad bike riding scientist cyccommute's Avatar
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    Quote Originally Posted by Broom Wagon View Post
    What does cold set mean?
    Bending a piece of metal without heating it. It's used with steel bicycle frames to spread the rare triangle to accommodate a wider hub. Depending on how much wider you want to make the rear triangle, it may not be needed. Like going from a 126mm hub to a 130mm hub. Most of the time you can spread the triangle by hand and just jam the wheel in place.

    Not recommended for aluminum frames.
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    Reviving an old thread

    Is it possible to use this AC track hub (120mm) on a 130mm wide frame?

    Hub:
    TRACK|REAR

    If so, do I need a bolt based axle as opposed to a quick release to fit the spacers?

  18. #18
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    if that hub is attached with a couple of bolts, and it looks like it is, you could just slip a 5mm washer between the end of the hub axle and the dropout. one on each side. the bolts may be too short, so don't get your hopes up.

    you might want to look at how the axle is assembled. it might offer a cleaner solution.

  19. #19
    Senior Member mrrabbit's Avatar
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    Just search against my name for hub specs...

    ...you'll see plenty of write-ups on how to get the standard spec you need when converting a hub.

    =8-)
    4000+ wheels built since 1984...

    Disclaimer:

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    4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
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    Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life

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