Advertise on Bikeforums.net



User Tag List

Results 1 to 6 of 6
  1. #1
    Senior Member screwdriver's Avatar
    Join Date
    Sep 2008
    Posts
    334
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Rear hub measurement

    Are all Schwinn bicycle rear hubs the same length? The frame of my Schwinn Traveler measures 5"(127mm) between the flat portions where the hub mounts. I'm sure that dimention changes a bit when the hub is mounted and tightened. What is the metric measurement for the correct rear hub, is it 120mm?

  2. #2
    Senior Member Retro Grouch's Avatar
    Join Date
    Feb 2004
    Location
    St Peters, Missouri
    My Bikes
    Rans Enduro Sport, Hase Kettweisel Tandem, Merin Bear Valley beater bike
    Posts
    23,840
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    They're not all the same. It depends on the type of bike and number of rear cogs.

    120mm would be a common dropout spacing for a bike with 5 or 6 rear cogs.

  3. #3
    Insane Bicycle Mechanic Jeff Wills's Avatar
    Join Date
    Mar 2008
    Location
    other Vancouver
    Posts
    6,808
    Mentioned
    16 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by screwdriver View Post
    Are all Schwinn bicycle rear hubs the same length? The frame of my Schwinn Traveler measures 5"(127mm) between the flat portions where the hub mounts. I'm sure that dimention changes a bit when the hub is mounted and tightened. What is the metric measurement for the correct rear hub, is it 120mm?
    Up until the '80's, it would have been 120mm. It might have gotten sprung at some point to put in a more modern wheel or maybe it just got bent. It's no big deal- just put the wheel in and ride it.
    Jeff Wills

    All my bikes.

  4. #4
    Senior Member screwdriver's Avatar
    Join Date
    Sep 2008
    Posts
    334
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Jeff Wills View Post
    Up until the '80's, it would have been 120mm. It might have gotten sprung at some point to put in a more modern wheel or maybe it just got bent. It's no big deal- just put the wheel in and ride it.
    The reason for my question is, I have a 1974 Schwinn LE TOUR frameset and I want to build it back as a 10 speed if that's possible.

  5. #5
    Senior Member Bill Kapaun's Avatar
    Join Date
    Feb 2007
    Location
    Mid Willamette Valley, Orygun
    My Bikes
    86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.
    Posts
    7,047
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    120 is an old spacing.
    126 was common for 7 speeds.
    130 or 135 > 7 speeds, with MB's being 135 and road bikes 130.

    Just build your wheel with 130MM "road" spacing and stuff it in the drop outs. They'll spring a few MM without problem.
    I think "technically", you may have to redish the wheel a couple MM's, but in reality, probably not.
    I've stuffed 130 into my 126 RockHopper and can't see that the wheel ISN'T centered. I did use a mishmash of parts though, so maybe it just happened to "work out"?.

  6. #6
    Insane Bicycle Mechanic Jeff Wills's Avatar
    Join Date
    Mar 2008
    Location
    other Vancouver
    Posts
    6,808
    Mentioned
    16 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by screwdriver View Post
    The reason for my question is, I have a 1974 Schwinn LE TOUR frameset and I want to build it back as a 10 speed if that's possible.
    Sure- why wouldn't it? 5-speed freewheels are still available:
    http://www.bikepartsusa.com/bikeparts/item/01-78343/
    http://sheldonbrown.com/harris/freewheels.html#5
    and wheels built with threaded hubs (not cassette) are available through any good bike shop.

    In fact, if the wheel is built to the now-standard 130mm width, a 5-speed freewheel allows the wheel to have almost no dish, which would be quite strong. This would be the way I'd build the bike.

    The Schwinn Le Tour frames were made from high-tensile steel. They're easy to realign to fit any hub you like, from 110mm width BMX hubs to 135mm width mountain bike hubs.

    (FWIW: my first 10-speed was a 1979 Schwinn Le Tour III. Darn I miss that bike.)
    Jeff Wills

    All my bikes.

Posting Permissions

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