Bicycle Mechanics - What Size Bottom Bracket?

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jdonzella
05-31-05, 11:58 AM
I have an old trek 800 antelope frame that I want to build up to a semi - cross bike. I have a sore triple crankset and shifters and need a bottom bracket, but not sure what size to buy. The shell is 3 inches and i had an old dura ace BB but it was a bit too long. Any suggestions would help?

sydney
05-31-05, 12:36 PM
I have an old trek 800 antelope frame that I want to build up to a semi - cross bike. I have a sore triple crankset and shifters and need a bottom bracket, but not sure what size to buy. The shell is 3 inches and i had an old dura ace BB but it was a bit too long. Any suggestions would help?Sora triple uses a 113mm square taper. 3" is 76.2mm,which does not compute. Maybe it's a 73mm shell.Maybe you need to remeasure.
davidwaters
05-31-05, 04:19 PM
remeasure in mm not inches so you dont have to convert. BB are done by mm so it makes sense to work in that measuring system throughout.