BB Size
09-04-08 | 11:37 AM
#1
Thread Starter
Member
Joined: May 2008
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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
Thanks
09-04-08 | 01:40 PM
#2
Cat 6
Joined: Dec 2007
Posts: 7,522
Likes: 236
From: Mountain Brook, AL
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.
My '80 or '81 WS used a SR Silstar crank that IIRC required a 124mm spindle with about 5mm of drive side offset.
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72 Frejus (for sale), Holdsworth Record (for sale), special CNC & Gitane Interclub / 74 Italvega NR (for sale) / c80 French / 82 Raleigh Intl MkII f&f (for sale)/ 83 Trek 620 (for sale)/ 84 Bruce Gordon Chinook (for sale)/ 85 Ron Cooper / 87 Centurion IM MV (for sale) / 03 Casati Dardo / 08 BF IRO / 09 Dogma FPX / 09 Giant TCX0 / 10 Vassago Fisticuff
72 Frejus (for sale), Holdsworth Record (for sale), special CNC & Gitane Interclub / 74 Italvega NR (for sale) / c80 French / 82 Raleigh Intl MkII f&f (for sale)/ 83 Trek 620 (for sale)/ 84 Bruce Gordon Chinook (for sale)/ 85 Ron Cooper / 87 Centurion IM MV (for sale) / 03 Casati Dardo / 08 BF IRO / 09 Dogma FPX / 09 Giant TCX0 / 10 Vassago Fisticuff
09-05-08 | 02:23 PM
#5
Your mom
Joined: Aug 2006
Posts: 2,545
Likes: 2
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.
