79 lines
2.5 KiB
Markdown
79 lines
2.5 KiB
Markdown
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[Bike Maintenance Class:](Bike_Maintenance_Class "wikilink") Week 1,
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Introduction and Flat Repair
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## Component Identification and Basic Terminology
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### What's What on a Bike
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### Drive Side and Non-drive Side
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The right side of the bike is referred to as the drive side while the
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left side is the non-drive side.
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### How to talk about gearing
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Gears closer to the frame are referred to as *inner* gears while the
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ones furthest from the frame are the *outer* gears. High and low in
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relation to the gears describes the relative mechanical advantage of the
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gearing. An easy mnemonic for this is **H**igher gears are **h**arder
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while lower gears are easier. The inner gears on a bike are always going
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to be the lower gears and the outer gears are the higher gears.
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### Right-hand vs Left-hand Threading
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Almost every threaded component on a bike is going to be right-hand
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threaded, which means that turning it clockwise will tighten it and
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turning it counter-clockwise will loosen it. Pedals and bottom bracket
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cups are examples where you would run into left-hand threaded
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components. To identify the *handedness* of a component hold it in front
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of you as in the picture below. The direction that the threads slant up
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too corresponds to the components handedness.
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<figure>
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<img src="LineDrawingofLeftandRightHandedSquareThreads.png"
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title="LineDrawingofLeftandRightHandedSquareThreads.png" width="200" />
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<figcaption>LineDrawingofLeftandRightHandedSquareThreads.png</figcaption>
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</figure>
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Left-handed Right-handed
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### Valves: Schrader and Presta
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The two types of valves you will see on 99% of bikes in America are
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schrader and presta. Schrader valves are the same type of valve that you
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see on cars and most other pneumatic tires. Presta valves are
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<img src="valvetypes.jpg" title="valvetypes.jpg" width="150"
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alt="valvetypes.jpg" />
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## Basic Upkeep
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### Inflating Tires
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<figure>
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<img src="valvedeflate.gif" title="Image:valvedeflate.gif" />
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<figcaption>Image:valvedeflate.gif</figcaption>
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</figure>
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### Cleaning and lubing the chain
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## Flat Repair
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- Understanding brake and wheel quick release mechanisims
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- How to remove a tire with tirelevers
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- Identifying puncture source (don't forget to keep everything lined
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up!)
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- Patching
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## Hands On
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Repairing flat tires on demo wheels.
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## **Resources**
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More than you really need to know about flats: [Sheldon Brown Tells
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All](http://www.sheldonbrown.com/flats.html)
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[Category:Bike_Maintenance_Class](Category:Bike_Maintenance_Class "wikilink")
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