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BB Bearing Cups, Which Way To Unscrew?

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BB Bearing Cups, Which Way To Unscrew?

Old 01-19-06, 11:19 AM
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BB Bearing Cups, Which Way To Unscrew?

Hey folks,
I'm disassambling a bottom bracket bearing/shaft assy. for the first time, the threaded kind with removable crank arms, not the one piece crank.

Sitting on the bike, the left side unscrewed normally, left-loosen. But the bearing cup (name?) on the right side is really tight. Which way does it unscrew?
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Old 01-19-06, 12:17 PM
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it should unscrew lefthand . what kind of bike ,how old , and steel cup /alum frame? you may also need to warm it up. I have a small butane torch that i use but a propane torch can used with care to free it up.I have had one that would not budge and just left it in and serviced from the left side.
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Old 01-19-06, 04:53 PM
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Wolfy, thanks! Great tips.

Part of this is for the experience and the other part (main goal) is to use the whole assy. in another bike.
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Old 01-19-06, 04:56 PM
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Oops, sorry, it appears to be a very old bike, a girl's ten-speed, steel frame, steel bearing cup. I have to get one of those two-pronged spanner wrenches I guess. I beat on it pretty hard and think I budged it almost 1/2" (left-loosen). But it's friggin' tight. I soaked it with oil last night. Will give another go soon. Just wanted to make sure I was turning it in the correct direction.
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Old 01-19-06, 06:03 PM
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Italian BBs are threaded different to English - the LH side has a RH-thread (both Italian & English), but the RH (chain-wheel) side is RH-thread (Italian) and LH-thread (English)…

- Wil
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Old 01-19-06, 06:45 PM
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Thanks for opining you guys. It turned out to be, Left side = normal, ccw left-loosen, Right side = odd, cw right-loosen, go figure. It doesn't look Chinese, it looks like it was a nice bike in it's time. I took everything off it and tossed the frame. I need the crankshaft (name) for my Labent by Ladue that'll be here soon. I still have to find another crankshaft too, it's got two.
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Old 01-20-06, 11:12 AM
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sorry I pointed you in the wrong direction . . Good luck with your labent.
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Old 01-20-06, 11:16 AM
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It takes a real man to apologize. Thanks. Nobody's prefect hehehe.
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