Advertise on Bikeforums.net



User Tag List

Results 1 to 6 of 6
  1. #1
    Senior Member
    Join Date
    Jan 2007
    Location
    London, Ohio
    Posts
    381
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    BB for 73 Fuji Finest

    Can someone tell me where I might find a replacement bottom bracket? The non-drive size is stripped and the bolt that holds the crank on keeps backing out when I ride.

  2. #2
    Broom Wagon Fodder reverborama's Avatar
    Join Date
    Jul 2006
    Location
    Minnesota
    My Bikes
    Fuji Supreme; Fuji Royale; Schwinn Varsity; Nishiki International; Schwinn Premis, Falcon Merckx
    Posts
    1,145
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Should be no problem at all. I replaced my 1980 Fuji BB with a Shimano BB UN-52 68/xxx where xxx was the width. I used a different crank and rear hub than you'll have so you'll have to figure out what the correct width will be but that shouldn't be too much trouble.

  3. #3
    Your mom
    Join Date
    Aug 2006
    Posts
    2,546
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Measure the spindle and your BB shell is most likely 68 mm. So you'll get a 68x(spindle length) BB.

  4. #4
    JRA...
    Join Date
    Oct 2003
    Location
    philly
    My Bikes
    trek 520 & 736, DeRosa Professional, Fuji Professional, Raleigh International 3-speed, Saronni (any info people?), Humber 3-speed, Raleigh Sports, Carlton Grand Prix coming soon!
    Posts
    839
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    it sounds like your crankarm is bad, not the bottom bracket. what exactly is "stripped?"

  5. #5
    Senior Member
    Join Date
    Jan 2007
    Location
    London, Ohio
    Posts
    381
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by dafydd View Post
    it sounds like your crankarm is bad, not the bottom bracket. what exactly is "stripped?"
    The bolt that goes through the crank arm and screws into the spindle had "backed out" during a ride and when I got home I noticied the threads on the bolt were pretty badly damaged and the bolt would no longer screw into the spindle. I took the bolt to the local hardware store (one of those really old places that has everything) and they were able to provide a replacement. It screwed right in so the spindle appears to be fine, it was just the threads on the bolt that were damaged. I added a lock washer so hopefully the bolt will not "back out" this time. What would be causing this?

  6. #6
    JRA...
    Join Date
    Oct 2003
    Location
    philly
    My Bikes
    trek 520 & 736, DeRosa Professional, Fuji Professional, Raleigh International 3-speed, Saronni (any info people?), Humber 3-speed, Raleigh Sports, Carlton Grand Prix coming soon!
    Posts
    839
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    non-drive side? can't speak to as why the threads on the crank bolt are bad, but the fact it spontaneously backed up is highly suggestive of a bad crankarm. the bolt was probably not torqued tightly enough to begin with, and the crankarm worked its way loose, ratcheting the bolt out along the way. once this happens, the taper on the crankarm is almost always ruined, resulting in a repeat event if the bolt/crankarm are reinstalled.

    if it appears the crankarm and bolt will take, you should re-torque the bolt after a week or so of riding. otherwise you need a new arm.

Posting Permissions

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