The document summarizes a session on rotational systems and bottom brackets. It will cover major and minor rotational systems, the six parts of every rotational system, overhauling and adjusting one-piece and three-piece bottom brackets, and a lesson on left-hand and right-hand threads. Attendees will learn how to remove, clean, install, and adjust a bottom bracket and associated parts using the proper tools. The session will include demonstrations of bottom bracket types, tools, adjusted conditions, and worn parts.
1. Session #4: Rotational Systems – Bottom Bracket
Bike Monkeys
Community Bicycle Center
Introductory Information & Stuff
Thank you notes:
Announcements: ???
Shop Chores: ???
Lesson A: Rotational Systems
Major and minor rotational systems:
Major: Bottom Bracket, Front & Rear Hubs, Headset
Minor: Jockey Wheels, Pedals, Freewheel
Six Parts of every rotational system:
1. Cup
2. Cone
3. Bearings
4. Grease
5. Axle
6. Locknut
Lesson B: Bottom Brackets
One Piece Bottom Bracket Overhaul & Adjustment
Three Piece Bottom Bracket Overhaul & Adjustment
Left-Hand and Right-Hand Thread Lesson
Bottom Bracket Tools & associated parts matching activity
Guess what’s wrong with this bottom bracket part activity
Remove, Clean, Install, and Adjust Bottom Bracket and associated parts
Tools: pedal wrench, crank puller, hook spanner, lock ring spanner, fixed cup remover, bottom
bracket press, pin spanner, socket wrench
Keeping parts together in proper order
Save all old parts until bike repair is completed
Demonstration Parts:
One-piece bottom brackets
Three-piece bottom brackets
Bottom bracket tools
Right and left hand threaded parts
Rotational Systems: adjusted too loose and too tight
Worn and pitted parts: cups, spindles, and bearings
C:Documents and SettingsAmeriCorpsDesktopBike Monkeys FolderSession 4 Bike Monkeys.doc