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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 05-13-08, 07:25 PM   #1
PRIMO22
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1 pc cranks to 3 pc cranks

I am confused with all this I want 3 pc cranks but I have one pc cranks. Can someone point me to a tut or tell me how to get the one piece cranks out and 3 pc in. By the way I have a Mongoose Motivator and use it for freestyle.
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Old 05-13-08, 08:38 PM   #2
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You need to install a bottom bracket adaptor. These are the two that I know of:

http://www.bikeworldusa.us/FMF-Euro-...source=froogle

or

http://harriscyclery.net/itemdetails.cfm?ID=1335

You take your old crank out, put the adaptor in, then install the bottom bracket and crank of your choice.
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Old 05-13-08, 09:41 PM   #3
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bmx 3 piece do not need an adapter as they are made to fit the american bb shell. whatever 3 piece bmx cranks you get nake sure you order ones for american bb. Bmx 3 piece cranks can come in many different bb sizes depending on the fram. There are american, euro, mid and spanish. There are also a couple oddball bike specific ones out there too.
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Old 05-14-08, 06:14 PM   #4
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Ok thanks ill check out both of those sites
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Old 05-14-08, 06:22 PM   #5
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What is a loose ball bottom bracket?
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Old 05-16-08, 04:33 PM   #6
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I need help
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Old 05-16-08, 05:49 PM   #7
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I need help
You need a bike shop.
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Old 05-17-08, 12:22 PM   #8
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You need a bike shop.
I hate bike shops. They always screw with my brakes when I get something done to it.
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