Advertise on Bikeforums.net



User Tag List

Results 1 to 19 of 19

Thread: Hub threading Q

  1. #1
    cs1
    cs1 is offline
    Senior Member cs1's Avatar
    Join Date
    Feb 2004
    Location
    Clev Oh
    My Bikes
    Specialized, Schwinn
    Posts
    6,173
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Hub threading Q

    I have several hubs at home that I want to convert to use as a fixed. The question is they are not threaded for a lockring. Does anyone have dimensions for the threading? I have a machinist friend that says he can do it cheap if I supply him with dimensions. Any help would be appreciated.



    Tim
    1999 Waterford RSE-11, 1995 Waterford 1200, 1989 Specialized Rockhopper Comp
    1989 Raleigh Technium, 1989 Schwinn Traveler, 1986 Specialized Rockhopper
    1984 Specialized Stumpjumper, 1986 Specialized Stumpjumper and just way too many projects to list.

  2. #2
    Iguana Subsystem dolface's Avatar
    Join Date
    Nov 2004
    Location
    san francisco
    Posts
    4,016
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    do what? machine another set of threads onto the hub?
    that MIGHT work, 'tho i'd be surprised if there is enough material there to cut a set of smaller-diameter threads into.

  3. #3
    cs1
    cs1 is offline
    Senior Member cs1's Avatar
    Join Date
    Feb 2004
    Location
    Clev Oh
    My Bikes
    Specialized, Schwinn
    Posts
    6,173
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by dolface
    do what? machine another set of threads onto the hub?
    that MIGHT work, 'tho i'd be surprised if there is enough material there to cut a set of smaller-diameter threads into.
    Exactly, I want to have the other side threaded for a fixed gear with lockring. I just don't have the threading dimemsion for the lockring.


    Tim
    1999 Waterford RSE-11, 1995 Waterford 1200, 1989 Specialized Rockhopper Comp
    1989 Raleigh Technium, 1989 Schwinn Traveler, 1986 Specialized Rockhopper
    1984 Specialized Stumpjumper, 1986 Specialized Stumpjumper and just way too many projects to list.

  4. #4
    Cornucopia of Awesomeness baxtefer's Avatar
    Join Date
    Oct 2004
    Location
    not where i used to be
    Posts
    4,847
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    depends what kind of lockring threading you want...
    33.5 mm 24 TPI Campagnolo, Gipiemme, Phil Wood, Miche
    1.29" 24 TPI Shimano, Suntour, Suzue, Surly, Zipp, Corima
    33.0 mm 1 Mavic/French

  5. #5
    cs1
    cs1 is offline
    Senior Member cs1's Avatar
    Join Date
    Feb 2004
    Location
    Clev Oh
    My Bikes
    Specialized, Schwinn
    Posts
    6,173
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by baxtefer
    depends what kind of lockring threading you want...
    33.5 mm 24 TPI Campagnolo, Gipiemme, Phil Wood, Miche
    1.29" 24 TPI Shimano, Suntour, Suzue, Surly, Zipp, Corima
    33.0 mm 1 Mavic/French
    WOW, like everything else in biking too many different standards. What is the recomended/most common threading? I love Campy but no one seems to stock their parts.


    Tim
    1999 Waterford RSE-11, 1995 Waterford 1200, 1989 Specialized Rockhopper Comp
    1989 Raleigh Technium, 1989 Schwinn Traveler, 1986 Specialized Rockhopper
    1984 Specialized Stumpjumper, 1986 Specialized Stumpjumper and just way too many projects to list.

  6. #6
    Retrogrouch in Training bostontrevor's Avatar
    Join Date
    Sep 2004
    Location
    Knee-deep in the day-to-day
    Posts
    5,484
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Go with the Shimano. It's the most common and there are plenty of quality lockrings to choose from at decent prices. On the other hand, a Campy diameter will require less machining (weakening) of the part.

  7. #7
    Senior Member
    Join Date
    Mar 2005
    Posts
    140
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Not to dump on your idea or anything, but I would seriously think twice before doing this. You really, really, really do not want to have your hub implode because you took too much material off.

  8. #8
    LV 99 9999HP/9999MP Erich Zann's Avatar
    Join Date
    Oct 2004
    Location
    West Philadelphia
    My Bikes
    crappy fake bike
    Posts
    245
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by r0cket-
    Not to dump on your idea or anything, but I would seriously think twice before doing this. You really, really, really do not want to have your hub implode because you took too much material off.
    I second this idea. The cost of your broken body will be alot more than even the most expensive track hub.

  9. #9
    jack of one or two trades Aeroplane's Avatar
    Join Date
    Jun 2005
    Location
    Suburbia, CT
    My Bikes
    Old-ass gearie hardtail MTB, fix-converted Centurion LeMans commuter, SS hardtail monster MTB
    Posts
    5,635
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Erich Zann
    I second this idea. The cost of your broken body will be alot more than even the most expensive track hub.
    Perhaps, but at what cost? Think about the guy who first ate Hemlock, or Deadly Nightshade. Granted he may not have had the same abitions as you, but the definitive knowledge gained from him has been useful for hundreds of years. Before him, it was just speculation. Try it, and let us know if you die or not.
    Quote Originally Posted by Dr Irwin Goldstein
    Men should never ride bicycles. Riding should be banned and outlawed. It is
    the most irrational form of exercise I could ever bring to discussion.

  10. #10
    Retrogrouch in Training bostontrevor's Avatar
    Join Date
    Sep 2004
    Location
    Knee-deep in the day-to-day
    Posts
    5,484
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Totally.

    People are way too frightened. Even if it breaks, it probably won't end up in a fatal wreck.

  11. #11
    ambassador of good will *new*guy's Avatar
    Join Date
    Jun 2004
    Location
    NOVA
    My Bikes
    many.
    Posts
    2,020
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You don't need a lockring anyway.

  12. #12
    Cornucopia of Awesomeness baxtefer's Avatar
    Join Date
    Oct 2004
    Location
    not where i used to be
    Posts
    4,847
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I don't think it would be a problem, if done correctly

    For those of you with a flipflop fix-free hub. take a look at both sides. there isn't more material on the fixed side. The hub shell has just been machined a bit smaller on that side to accept the lockring. (otherwise it would have to take different sized bearings on each side)
    Then again, an old freewheel hub might be different. I don't have any of those lying around to check.

  13. #13
    Spoked to Death phidauex's Avatar
    Join Date
    Jul 2004
    Location
    Boulder, CO
    My Bikes
    Salsa La Cruz w/ Alfine Internal 8-speed, Scattante Ultegra roadie, Maserati fixie conversion
    Posts
    1,334
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Good luck with it. Pay close attention to the amount of material left, and make sure the threading goes far enough in so that the lockring directly engages the side of the cog, instead of just running out of threads.

    I'd recommend bringing a real track hub for him to look at and measure, or at least some detailed photos.

    Let us know how it works!

    peace,
    sam

  14. #14
    ready for the freakout jitensha!'s Avatar
    Join Date
    Nov 2003
    Location
    the 757
    My Bikes
    Spicer track
    Posts
    991
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    oh, and just because nobody's bothered to mention it, lockring threads are reverse (left hand) threads. but seriously, if you're gonna go through all that trouble, buy a track hub. fixie!=cheap.

  15. #15
    Senior Member DiegoFrogs's Avatar
    Join Date
    Feb 2005
    Location
    Lund, Sweden
    My Bikes
    Mostly old stuff.
    Posts
    1,884
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Note also that on the cheap Suzue hub, the fixed and free sides actually do have different sized bearings, cups (I think...) and shields. I don't know how it works on a quality hub, though.

  16. #16
    mountain troll deadly downtube's Avatar
    Join Date
    Sep 2004
    Location
    santa cruz mountains
    My Bikes
    the hummer brand mountain bike
    Posts
    1,126
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    there's an easier method to ride a fixed gear wheel. get a cheap used vintage hub and throw on a random cog with some JB Weld, that cog will never ever come off, it will be atomically and nuclearly and electromagnetically bonded with the hub.... you can't ever switch cogs, but, once you know your gearing, you dont want to change anyways.

  17. #17
    old codger icithecat's Avatar
    Join Date
    Sep 2004
    Location
    Victoria B.C.
    Posts
    1,124
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Please try this and report back. I can source lots of older campy or other quality freewheel hubs. This could be a mover if it works.

  18. #18
    cs1
    cs1 is offline
    Senior Member cs1's Avatar
    Join Date
    Feb 2004
    Location
    Clev Oh
    My Bikes
    Specialized, Schwinn
    Posts
    6,173
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Aeroplane
    Perhaps, but at what cost? Think about the guy who first ate Hemlock, or Deadly Nightshade. Granted he may not have had the same abitions as you, but the definitive knowledge gained from him has been useful for hundreds of years. Before him, it was just speculation. Try it, and let us know if you die or not.
    LOL, sounds like a plan to me. It looks like the road to hell is paved with good intentions.

    Tim
    1999 Waterford RSE-11, 1995 Waterford 1200, 1989 Specialized Rockhopper Comp
    1989 Raleigh Technium, 1989 Schwinn Traveler, 1986 Specialized Rockhopper
    1984 Specialized Stumpjumper, 1986 Specialized Stumpjumper and just way too many projects to list.

  19. #19
    i don't stop travsi's Avatar
    Join Date
    Mar 2005
    Location
    basel, switzerland
    My Bikes
    soma rush, giro
    Posts
    1,058
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    ...i think more importantly are the logistics of this project. are you going to be able to get the hub into a lathe in a way that its absolutely centered and tight enough to cut good threads into?

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •