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The bottom bracket cup from HELL! (removal help)
Edit: Solved, thanks hueyhoolihan.
Hi all, I'm having a hell of a time with this one fixed BB cup. I think it's a cheapo Schwinn bike. The removable cup on the left loosens counter-clockwise, so that means British threading and the fixed should remove clockwise, correct? And in a vise I should move the bike counter-clockwise? Well I've tried everything I can think of. I tried the Sheldon Brown tool a few times with a giant bolt, all it did was bend the washers (I marked the BB cup with a felt to confirm it wasn't moving). I then tried the vise method turning the bike counter-clockwise and all this did was snap the cup from the vise leading to chips on the BB.... not enough surface to grip properly. This is a homebuilt recumbent so it's a little awkward to manoeuvre. I'd just say screw it and use the cup but I wanted a much closer chainline and I don't have a short enough axle. |
i can say that on my bike my Shimano un-7? BB drive-side cup is reverse threaded. the non-drive side is not.
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Huh, that's interesting. If I've been turning this dang thing the wrong way the whole time I will eat the bearings. I can't get my head around this, any advice? Unfortunately there are no markings on the BB cups so I have no idea what it is.
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Originally Posted by hueyhoolihan
(Post 16839473)
i can say that on my bike my Shimano un-7? BB drive-side cup is reverse threaded. the non-drive side is not.
Oh my god I'm such an idiot. Ok I did the vise thing again turning the gaint-assed bike clockwise instead and it came loose. Thanks for getting me to rethink this. :thumb: I was turning it the wrong way in the vise. |
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