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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 11-28-06, 07:02 PM   #1
stiffwheel
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BB Install new frame

Help me out, I have a surly crosscheck frame I am building up for my girl.
I can't get the fixed cup to go in. The BB is from one of my old frames and in good condition.
The threads are compatable (1.37x24). I dont want to strip the threads on either frame or cups.
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Old 11-28-06, 09:05 PM   #2
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What kind of bb is it?
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Old 11-28-06, 11:53 PM   #3
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Have you greased the threads on the BB?
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Old 11-29-06, 01:23 AM   #4
sivat
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New frames will often have burs or paint/powdercoat in the threads. Take it to a shop and have them chase the threads.
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Old 11-29-06, 02:03 AM   #5
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...and try pushing it in (towards the center of the bottom bracket shell) with a little more force than you'd normally apply as you turn it.

also...do you have a fixed cup tool? (if you don't, go spend the $20. you'll be happy later ps...measure the distance between the flats...it's is either 32mm or 36mm. if you're lucky your lbs will have the double sided tool with both....mine only had a 36 with a bb pin spanner on the other end that i already have)

also...are you turning it the right way? (is it plugged in?)
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Old 11-29-06, 05:42 AM   #6
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Quote:
Originally Posted by braingel...[B
are you turning it the right way[/B]?
+1. Drive-side installs counter-clockwise, non-drive side installs clockwise, on most bikes.

Bob
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