BB Question
04-30-06, 04:18 PM
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BB Question
I have posted this in the Mechanics Forum also, but I thought you guys might be able to help too.
I just picked up this old frame that I am planning to convert. The BB will hardly turn so I am going to replace it from the get-go. Can anyone tell me how to remove this type of BB from the frame? Also, will this frame accept a modern type bottom bracket? Thanks.
I just picked up this old frame that I am planning to convert. The BB will hardly turn so I am going to replace it from the get-go. Can anyone tell me how to remove this type of BB from the frame? Also, will this frame accept a modern type bottom bracket? Thanks.
04-30-06, 04:22 PM
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Take off the lockring with a lockring tool, or carefully with a screw driver and hammer. Then unscrew the cup with a wrench.
04-30-06, 04:24 PM
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is that an old raleigh?
it kinda looks like one of their old 26 TPI BBs. (if so you're virtually screwed for new BBs - see sheldon for info)
if not, you just need a lockring tool (right threaded lockring) remove that, then you should be able to spin out the removable cup by hand or with a big wrench. then you can have fun with the fixed cup.
if you're lucky a big wrench will do. if you're not lucky then you'll need a fixed cup remover - see your LBS or sheldon for a homemade version
it kinda looks like one of their old 26 TPI BBs. (if so you're virtually screwed for new BBs - see sheldon for info)
if not, you just need a lockring tool (right threaded lockring) remove that, then you should be able to spin out the removable cup by hand or with a big wrench. then you can have fun with the fixed cup.
if you're lucky a big wrench will do. if you're not lucky then you'll need a fixed cup remover - see your LBS or sheldon for a homemade version
04-30-06, 05:10 PM
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Originally Posted by baxtefer
is that an old raleigh?
it kinda looks like one of their old 26 TPI BBs. (if so you're virtually screwed for new BBs - see sheldon for info)
if not, you just need a lockring tool (right threaded lockring) remove that, then you should be able to spin out the removable cup by hand or with a big wrench. then you can have fun with the fixed cup.
if you're lucky a big wrench will do. if you're not lucky then you'll need a fixed cup remover - see your LBS or sheldon for a homemade version
it kinda looks like one of their old 26 TPI BBs. (if so you're virtually screwed for new BBs - see sheldon for info)
if not, you just need a lockring tool (right threaded lockring) remove that, then you should be able to spin out the removable cup by hand or with a big wrench. then you can have fun with the fixed cup.
if you're lucky a big wrench will do. if you're not lucky then you'll need a fixed cup remover - see your LBS or sheldon for a homemade version
It is actually an old Schwinn. Am I still "screwed"?
04-30-06, 07:05 PM
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oh, not screwed. it should be a regular british threaded BB then
you might be screwed for stem size though......but likely not.
you might be screwed for stem size though......but likely not.
04-30-06, 07:39 PM
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Originally Posted by baxtefer
oh, not screwed. it should be a regular british threaded BB then
you might be screwed for stem size though......but likely not.
you might be screwed for stem size though......but likely not.
04-30-06, 08:07 PM
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yes, varsinentals have ashtabula cranks.
that picture, however is not of an electroforged schwinn, nor of an american BB
that picture, however is not of an electroforged schwinn, nor of an american BB
04-30-06, 08:15 PM
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Well, didn't I get lucky. I've got a Schwinn conversion with the weird cranks, and the weird stem. I can't even run modern pedals on it.
04-30-06, 08:17 PM
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Originally Posted by baxtefer
yes, varsinentals have ashtabula cranks.
that picture, however is not of an electroforged schwinn, nor of an american BB
that picture, however is not of an electroforged schwinn, nor of an american BB
/wasn't paying enough attention.
05-01-06, 09:08 AM
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Originally Posted by baxtefer
if you're not lucky then you'll need a fixed cup remover - see your LBS or sheldon for a homemade version
05-01-06, 10:35 AM
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Even you have trouble finding a cartridge bb for the frame, you may not be so screwed. Once you get the thing open, scrap all the bearings and have a look at the insides of the cups - if they're not grooved or pitted, you might be able to just clean 'em out and put in new grease and a new set of ball bearings. I just did this with an old French bb and it is running like new now. I followed Sheldon's advice and traded the bearing holder (that plastic thing that olds 7 ball bearings) for loose bearings (11 per cup). I also scrapped the old axle (which took annoying cottered cranks) for a newer, square taper sort. Maybe you can do the same.
