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/ bikemanforu / bikemanforu Upgrade a one-piece American crank to a three-piece crank by installing a loose bearing bottom bracket and separate spindle Part 2.1, Grease and Pack Bearings. Free Shipping www.bikemanforu... on bike parts, tires, tools, and cycle accessories. In this video tutorial, KZbin's award-winning guru of DIY bicycle repair shows how to upgrade your American bottom bracket with economical bike parts. Third in BikemanforU's series on American Bottom Brackets. Replace your heavy American (ashtabula) crank using the step-by-step instruction ifrom BikemanforU DIY videos. Upgrading your American BBT shell gives you more choices and lighter weight in your bicycle drive train. Converting the inside of the BBT shell (or hanger in old cycling lingo) on your bike ushers you into a new world of customization. Change your sprocket / chainring or crank arm length whenever you choose. The upgrades shown in these videos work for both single speed and multi-speed cranks. Watch the full series here. bit.ly/1hLeejw Watch the full series here. bit.ly/1hLeejw Thumbs up if you like what you see. For more great how-to videos for fixing and maintaining your bike, check out the BikemanforU's award-winning channel / bikemanforu Subscribing's free for new videos every week. Access the BikemanforU directly with your questions and project ideas for upgrading your bike. Here's how: Get real with the LIVE show Saturdays 10am eastern bit.ly/1ar9OWg Head over to live tech talk Fridays 5:15pm eastern www.younow.com/... Watch the video stream or log in with facebook to chat. @bikemanforu on Twitter. Like BikemanforU on facebook.