The Spoke Curriculum - Session 1: Difference between revisions
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Start with a game to gauge existing knowledge and interests. | Start with a game to gauge existing knowledge and interests. | ||
=== Details === | ===Details=== | ||
Participants are brought together and presented with the main components of a disassembled bicycle by the mentor/mechanic (e.g. seat post, tire, etc). | |||
For each component participants will be asked if they are familiar with the part, and what it is. The participant who correctly names the part will then take the item and place it on the predetermined space allocated, and labeled, on the wall. By the end of this activity a disassembled, and properly labeled bicycle, will be on display. | |||
This activity will provide a non-competitive way to ease tensions and become familiar with peers, mentors and the terminology and major components they will be working on in the weeks ahead. The disassembled bike will then remain on the wall for the duration of the sessions and will serve as a visual cue to be referred to. | |||
In order for this to be a realistic task, the bicycle will only be disassembled into it's major components (i.e. a hub vs. the cup, cones, bearings, etc). Furthermore, posters accompanied by their proper name will need to be present in the space. This will give participants the visual references necessary to name the parts correctly and will facilitate in a noncompetitive environment. | |||
=== Content === | === Content === | ||
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| This is an offline activity. The instructor should ask questions based on the level of the the class, starting at the very basics (how does the bike tire work?) and becoming more challenging if the students can handle it (what do the bottom bracket, headset, and hubs all have in common?), but still relevant (or at least interesting). The goal is to gauge existing knowledge and interest, as well as to hint at interesting learning possibilities for the next few weeks, without discouraging anyone. | | This is an offline activity. The instructor should ask questions based on the level of the the class, starting at the very basics (how does the bike tire work?) and becoming more challenging if the students can handle it (what do the bottom bracket, headset, and hubs all have in common?), but still relevant (or at least interesting). The goal is to gauge existing knowledge and interest, as well as to hint at interesting learning possibilities for the next few weeks, without discouraging anyone. | ||
It should also serve as an icebreaker and introduce | It should also serve as an icebreaker and introduce '''participants''' to each other, hopefully in a non-competitive way. | ||
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[[File:hub74.jpg|thumb|upright|right|http://www.parktool.com/uploads/images/blog/repair_help/hub74.jpg]] | [[File:hub74.jpg|thumb|upright|right|http://www.parktool.com/uploads/images/blog/repair_help/hub74.jpg]] | ||
The bicycle is made of a few main components. The frame is the main | The bicycle is made of a few main components. The frame is the main component 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 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. | ||
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Some problems are only apparent while riding a bicycle. For example, if an unusual noise is repetitive, occurring with every pedal revolution, the problem could be in the crankset area (pedal, bottom bracket, or chainring). A noise every second or third revolution might be in the chain, such as a stiff link. Ask yourself if the noise occurs when pedaling only or when coasting, and note if the noise occurs under load, such as on a hill or if you hit a bump. | Some problems are only apparent while riding a bicycle. For example, if an unusual noise is repetitive, occurring with every pedal revolution, the problem could be in the crankset area (pedal, bottom bracket, or chainring). A noise every second or third revolution might be in the chain, such as a stiff link. Ask yourself if the noise occurs when pedaling only or when coasting, and note if the noise occurs under load, such as on a hill or if you hit a bump. | ||
The first step to examining a bike is to | The first step to examining a bike is to look for issues while riding. Does the chain fall off? When (e.g. only when they're shifting and climbing a hill?), and in what gear? Do the tires hold air? How does it shift? Brake? Do the brakes squeal? Are there any other noises? | ||
If the bike is safe to ride, and the tires have adequate air pressure, you can take the bike for a test ride | If the bike is safe to ride, and the tires have adequate air pressure, you can take the bike for a test ride. Often this is not possible or necessary until after some repairs have been made first. | ||
With the bike in a repair stand, you can also visually inspect the bike for problems, test shifting, and feel for loose or overtight adjustments. This is where you can often pinpoint the source of problems that you felt or heard while riding. | With the bike in a repair stand, you can also visually inspect the bike for problems, test shifting, and feel for loose or overtight adjustments. This is where you can often pinpoint the source of problems that you felt or heard while riding. | ||
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== Tools == | == Tools == | ||
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=== Description === | === Description === | ||
Participants select a bike. Size, style. | |||
=== Details === | === Details === | ||
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| Drive Train | | Drive Train | ||
| | | Creaking and squeaking noises are annoying, and can be a sign of more serious problems. Damage to parts may result if they are left unattended. If during a ride you hear a creak or squeak once per revolution, it is probably located in the crankset and pedal area. If the noise is once every 2 - 3 revolutions, it may be in the chain. | ||
The most common cause of creaking is the crank being loose on the spindle. Remove the crank bolts, lubricate the threads and under the bolt head, and re-install. | |||
On some cranksets, the individual chainrings are replaceable, and are held to the cranks by chainring bolts. Use a hex key wrench and check each bolt. Hold the back chainring nut from spinning with a chainring nut wrench. | |||
Tighten pedals into crankarms. Pedal bearings can also creak. Spin the pedal and listen for noise. | |||
The bottom bracket may not be properly secured into the frame. Most bike frames use a threaded bottom bracket shell. If the bearing cups or retaining lockring are not tight, there may be movement between the internal and external threads. | |||
Listen for dry links by spinning the chain in a repair stand. Lubricate as necessary, with a drop of lubricant on each roller and rivet. Look at each and every rivet to check misalignmet in the chain plates. Inspect for twists in side plate, or burrs, cuts or other damage to the side plates. Place chain in a gear combination that relaxes the rear cage, and spin chain backwards. If the chain hops as it passes of the pulley wheels, it may have a tight or rusty link. | |||
loose spokes | |||
spoke protector | |||
frame cracks | |||
saddle | |||
headset | |||
stem & handlebars | |||
cassette lockring | |||
| http://www.parktool.com/blog/repair-help/trouble-shooting-a-creaky-or-noisy-drive-train | | http://www.parktool.com/blog/repair-help/trouble-shooting-a-creaky-or-noisy-drive-train | ||
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| http://www.top10bikefixes.org/images/straighten-wheel/check-spokes.jpg | | http://www.top10bikefixes.org/images/straighten-wheel/check-spokes.jpg | ||
|} | |} | ||
== Charts == | |||
=== Description === | === Description === | ||
Make a "doctor's chart" of findings. | |||
=== Details === | === Details === | ||
TBD | |||
=== Content === | === Content === | ||
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| | | This chart will go into detail about the diagnosis (what to check, how to check it, and what the findings mean) | ||
|} | |} | ||