The Spoke Curriculum - Session 1: Difference between revisions

The Spoke Curriculum - Session 1 (view source)

Revision as of 04:08, 16 February 2012

1,895 bytes added , 16 February 2012

no edit summary

Cwc

Bureaucrats, Check users, Interface administrators, Administrators

989

edits

@@ Line 21: / Line 21: @@
 == Overview of bike ==
+=== Description ===
+Cursory: just awareness of the parts of the bike, and similarities in mechanics
+=== Details ===
+Show some cutaway cross-sections of hubs, tires, etc., to show innards without going into details. Demonstrate why it's interesting, and encourage excitement for learning later.
+=== Content ===
+{| class="wikitable"
+! scope="col" | Primary Content
+! scope="col" | Instructor Notes
+|-
+| "The bicycle is made of a few main components. The frame is the main tubes of the bicycle: commonly in a classic diamond design. The fork holds the front wheel in its dropouts, and the stem clamps onto the fork and the handlebars. The saddle attaches to the seatpost. The rear wheel attaches to the rear dropouts.
+The pedals attach to the cranks, which are attached to the bottom bracket. The chain runs around the cogs and the chainring, and derailleurs push it from side to side.
+The word ""wheel"" refers to the entire assembly of tire, tube, rim, spokes, hub, and cogs. They all turn on the axle of the wheel. The key parts that allow the wheel to turn are the ball bearings, which are sandwiched between a ""cup"" that holds the bearings, and a ""cone"" that rests against the inside of the bearings. [http://www.parktool.com/uploads/images/blog/repair_help/hub74.jpg]
+(Pass around a physical cutaway, similar to: http://i1197.photobucket.com/albums/aa423/curtis_odom/MONARK-01.jpg)
+Both wheels, the bottom bracket, pedals, and the headset all use this same basic mechanism to rotate. We will learn how to service wheel hubs and bottom brackets, and possibly headsets too, but the procedures are usually very similar."
+| Show a bottom bracket when talking about them, since it's not apparent what that is or how the cranks attach to it. Showing a cutaway hub, with caged bearings showing, as well as a separate, loose cup & cone assembly is very helpful to demonstrate hubs.
+|}