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How do I remove the BB cup?

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Old 02-03-15 | 11:28 AM
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How do I remove the BB cup?

I'm replacing the cottered BB in an old, low-end Bridgestone frame from the 70's with a square taper BB. Not sure how to get out the DS BB cup. I'm a bit confused with all the different terminology and standards, so it's been difficult searching and figuring out which method to use, or if I need special tools. Thanks in advance for your help!
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Old 02-03-15 | 12:04 PM
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if that one is threaded and has left handed threads, then...

i made and used Sheldon's DIY tool to good effect. Tool Tips--Bottom Bracket Cups

Last edited by hueyhoolihan; 02-03-15 at 12:07 PM.
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Old 02-03-15 | 12:30 PM
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Those 2 holes are for a pin wrench. to use the holes you may have to make that tool yourself.

the truck wheel bolt sized Tool may be made up of parts found in an Auto parts store . get the bolt long enough to be wider than the BB shell .

Then it can be flipped either way ..
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Old 02-03-15 | 01:02 PM
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Thanks! I'll give these a shot!
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Old 02-03-15 | 03:38 PM
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there is always the Sheldon Brown bolt tool method it works well (oops just noted this was already posted.....it is that good )

Tool Tips--Bottom Bracket Cups
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Old 02-03-15 | 03:46 PM
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Park SPA-2 Red Freewheel Ring Spanner - Modern Bike

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Try either of those.
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Old 02-03-15 | 05:57 PM
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Originally Posted by lyrictenor1
I'm replacing the cottered BB in an old, low-end Bridgestone frame from the 70's with a square taper BB. Not sure how to get out the DS BB cup. I'm a bit confused with all the different terminology and standards, so it's been difficult searching and figuring out which method to use, or if I need special tools. Thanks in advance for your help!
Do you plan to replace the bottom bracket or is the inside pitted?
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Old 02-03-15 | 07:41 PM
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The Sheldon Brown solution worked like a charm. Thanks, all!
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Old 02-03-15 | 07:41 PM
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Originally Posted by Velocivixen
Do you plan to replace the bottom bracket or is the inside pitted?
I replaced it with a cartridge square taper BB. (Never want to work on a cottered crank again!)
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