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  1. #1
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    Scwinn World Sport mid 80's how to measure bottom bracket?

    I am purchasing this crank to convert my schwinn world sport

    http://cgi.ebay.com/EIGHTHINCH-FIXED...d=p3286.c0.m14

    It requires a 103mm square taper, how can i measure my square taper to know that it will fit?

  2. #2
    Insane Bicycle Mechanic Jeff Wills's Avatar
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    Quote Originally Posted by ewingmeister View Post
    I am purchasing this crank to convert my schwinn world sport

    http://cgi.ebay.com/EIGHTHINCH-FIXED...d=p3286.c0.m14

    It requires a 103mm square taper, how can i measure my square taper to know that it will fit?
    It won't. The stock bottom bracket on a Schwinn World Sport will have a 120 to 124mm spindle. You should get a bottom bracket to match the cranks. Fortunately, the World Sport had a standard English-threaded bottom bracket.
    Jeff Wills

    All my bikes.

  3. #3
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    will this bracket work

    http://www.universalcycles.com/shopp...s.php?id=16123

    will this bracket work, thank you for the help by the way how can i measure my tube to find out if you dont know off hand i already removed the old spindle this bracket looks like it may fit

  4. #4
    Bianchi Goddess Bianchigirll's Avatar
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    Hi ewingmaster. yes, as Jeff stated.that BB will work. I was looking at that 1/8 crank. you know you need a new chain right? the 'pitch of the teeth is not compatible with your "10spd" 3/32 chain

    did you get you cog or single speed freewheel yet?
    Bianchis '87 Sport SX, '90 Proto (2), '91 Boarala 'cross, '93 Project 3, '88 Trofeo, '86 Volpe, '89 Axis, '79 Mixte SOLD, '99 Mega Pro XL Ti, '97 Ti Megatube, , '90 something Vento 603,

    Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '86 Bertoni (sold), '09 Motobecane SS, '98 Hetchins M.O., '09 K2 Mainframe, '89 Trek 2000, '?? Jane Doe (still on the drawing board), '90ish Haro Escape

  5. #5
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    yes, thank for your reply,the whole reason i am converting this bike is becuase i scored a track wheel set for $100 its a flip flop hub with 16 tooth cogs on both sides, i found a chain on the crank dealers website to fit it

  6. #6
    Insane Bicycle Mechanic Jeff Wills's Avatar
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    Quote Originally Posted by ewingmeister View Post
    http://www.universalcycles.com/shopp...s.php?id=16123

    will this bracket work, thank you for the help by the way how can i measure my tube to find out if you dont know off hand i already removed the old spindle this bracket looks like it may fit
    Yes, that bottom bracket will work.

    You don't have to measure anything. The bottom bracket shell on a World Sport is English thread- that's all you need to know.
    Jeff Wills

    All my bikes.

  7. #7
    Bianchi Goddess Bianchigirll's Avatar
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    Ok
    Bianchis '87 Sport SX, '90 Proto (2), '91 Boarala 'cross, '93 Project 3, '88 Trofeo, '86 Volpe, '89 Axis, '79 Mixte SOLD, '99 Mega Pro XL Ti, '97 Ti Megatube, , '90 something Vento 603,

    Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '86 Bertoni (sold), '09 Motobecane SS, '98 Hetchins M.O., '09 K2 Mainframe, '89 Trek 2000, '?? Jane Doe (still on the drawing board), '90ish Haro Escape

  8. #8
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    hey by the way how do i install something like that bracket does it thread though the right side down onto the left side? Do i need any special tools or should i take it to a local bike shop after i paint the frame and ask for them to install it for me?

  9. #9
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    You need a cartridge bottom bracket tool and socket wrench or 1 inch wrench. Or just have them install it. They won't charge much.

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