Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5

Thread: BB Size

  1. #1
    Member IonSpeedMaster's Avatar
    Join Date
    May 2008
    Posts
    44
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    BB Size

    I'm posting this in here cause I figured many of the people who work on bikes may know the proper size. I would like to know the correct sizing for a bottom bracket on an 1983 Schwinn World Sport. If I could get an answer, it'd be greatly appreciated!
    Thanks

  2. #2
    slow as I ever was Ex Pres's Avatar
    Join Date
    Dec 2007
    Location
    an imposter living in the 35223
    Posts
    5,784
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    The BB shell itself is a standard 68mm width english thread shell. The spindle length will vary depending on the crankset. That peice of the puzzle is the more difficult to answer.

    My '80 or '81 WS used a SR Silstar crank that IIRC required a 124mm spindle with about 5mm of drive side offset.
    72 special CNC ______ 72 Frejus (ala Legnano) _73 Holdsworth Record
    80 Ranson__________ 80 unknown French____ 83 Trek 600 (620 styled)
    85 Gianni Motta_____ 90 Miele Gara ________ 02 Casati Dardo #1
    02 Casati Dardo #2 __ 03 Casati Dardo ______ 08 BF IRO (fixed/SS)
    09 Dogma FPX magn_ 10 Vassago Fisticuff (IGH)

    For Sale: _________ 78 Raleigh Professional __ 82 Peugeot PXN10
    85 Trek 560_______ 88 Guerciotti GLX

  3. #3
    Member IonSpeedMaster's Avatar
    Join Date
    May 2008
    Posts
    44
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Ok cool, thanks so far. So if I'm getting a new BB and a new crankset, both are IRO and from pricepoint.com, they'll most likely be perfectly compatible with each other, correct?

  4. #4
    Senior Member bikeman715's Avatar
    Join Date
    Mar 2008
    Location
    Salinas , Ca.
    My Bikes
    Bike Nashbar AL-1 ,Raligh M50 , Schwinn Traveler , and others
    Posts
    2,079
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    yes

  5. #5
    Your mom
    Join Date
    Aug 2006
    Posts
    2,547
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    They probably go together. I would find the cheapest I could, if I were you; the World Sport was nothing special. In fact, considering that a new crank and BB will cost you $50 or so, I might start thinking about buying a newer used bike instead of putting a brand new crank on that one.

Posting Permissions

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