Advertise on Bikeforums.net



User Tag List

Results 1 to 6 of 6

Thread: Wobbly hub

  1. #1
    chopsockey jo5iah's Avatar
    Join Date
    Feb 2005
    Location
    Seattle
    My Bikes
    Monkey SS everythingbike, Ti frankenroadbike
    Posts
    253
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Wobbly hub

    So I'm back from my first bike tour, but not without some problems on the way:

    When in low gear, my freewheel broke. It was a relatively unused NOS Shimano freewheel (dunno model, but decent at worst). I don't know how to describe better than to say the freewheel body snapped. Luckily, I found a replacement.

    After installing the replacement, I noticed that when coasting the wheel (upsidedown bike), the cassette seemed to wobble. Rather, it seemed to have a non circular orbit. There was no shaking a la loose hub. So, I figured that my axle was bent.

    The axle was not bent. I learned this after comparing to a replacement, installing both, and still not having a change in behavior.

    What gives?

    My only working theory at this point is that the bearings in the hub are somehow just a little off in size, somehow allowing the axle to be slightly off in orientation when the hub is properly adjusted.

    Other clues for solving the mystery:
    - Adjusting the hub was not so easy. There seemed to be a friction point or catch point on each revolution, unless I traded for a slightly loose adjustment.
    - I'm not using original cones - I did match the new ones to the old, and they seemed to have exactly the same shape
    - I'm not using original bearings
    - I've bent an axle on this hub as well, but I think that was when I pulled it out of the dropouts really cranking up a hill

    Thoughts?

  2. #2
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    25,463
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    I expect the threads on your hub that the freewheel screws onto are damaged.

  3. #3
    Banned.
    Join Date
    Feb 2003
    Location
    Fort Wayne, Indiana
    My Bikes
    84 Trek 660 Suntour Superbe; 87 Giant Rincon Shimano XT; 07 Mercian Vincitore Campy Veloce
    Posts
    4,766
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    All freewheels wobble a little bit. But to be safe have your hub checked by a qualified expert...I assumed that should have been done when the freewheel was bought and installed on your hub unless you did it yourself. You may want to buy a better hub, sounds like you had a lot of problems with that one.

  4. #4
    Senior Member RockyMtnMerlin's Avatar
    Join Date
    Sep 2005
    Location
    Laramie Wyoming
    My Bikes
    Merlin Extralight Topolino Wheels Campy Record
    Posts
    2,972
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by froze
    All freewheels wobble a little bit.
    Hmm, that is not the case with my Campy Record on my Topolinos.

  5. #5
    Banned.
    Join Date
    Feb 2003
    Location
    Fort Wayne, Indiana
    My Bikes
    84 Trek 660 Suntour Superbe; 87 Giant Rincon Shimano XT; 07 Mercian Vincitore Campy Veloce
    Posts
    4,766
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by RockyMtnMerlin
    Hmm, that is not the case with my Campy Record on my Topolinos.
    Do you freewheel or freehub (Cassette). All freewheels I've ever seen have a slight wobble up and down, not side to side.

  6. #6
    chopsockey jo5iah's Avatar
    Join Date
    Feb 2005
    Location
    Seattle
    My Bikes
    Monkey SS everythingbike, Ti frankenroadbike
    Posts
    253
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It's a thread-on freewheel. The wobble is much more pronounced then I've seen elsewhere. It's also not just up/down. It seems like the axle is in crooked, wrt the freewheel.

Posting Permissions

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