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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 07-28-05, 12:28 PM   #1
rufvelo
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English BB threading

I want to upgrade my old bike with a new frame. The older Shimano Ultegra 7/8 speed STI has worked well and I don't need anything else. Just want to replace the older Vitus 992 aluminum with a carbon or titanium frame.

The Qs I have concerns bottom bracket threading. I've seen mentions of 'English BB threading' in my frame search.

What does my Vitus/Ultegra have?
What threading do Colnago, Pinarello, Masi, Merckx etc have?
If this is an issue, do I just require a new bottom bracket or does it also impact the crank and possibly other components?

Thanks
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Old 07-28-05, 01:13 PM   #2
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Don't matter what your old frame has since you ought to get a new bottom bracket to fit the new frame. Italian and English are the two main types, English 68mm being a bit more popular.
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Old 07-28-05, 01:46 PM   #3
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Thank you!
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