Classic & Vintage - 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-GEAR-TRACK-CRANK-CRANKSET-165MM-WHITE_W0QQitemZ370226349680QQcmdZViewItemQQptZCycling_Parts_Accessories?hash=item563335c670&_trksid=p3286.c0.m14

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

I am purchasing this crank to convert my schwinn world sport

http://cgi.ebay.com/EIGHTHINCH-FIXED-GEAR-TRACK-CRANK-CRANKSET-165MM-WHITE_W0QQitemZ370226349680QQcmdZViewItemQQptZCycling_Parts_Accessories?hash=item563335c670&_trksid=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.

http://www.universalcycles.com/shopping/product_details.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

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?

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

http://www.universalcycles.com/shopping/product_details.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.

Ok

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?

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.