# Sovereignty Module: Turn the Pedal

## Complete Bicycle Mechanics and Repair: From Flat Tire to Full Overhaul

The bicycle is the most efficient human-powered transportation ever invented. This campaign covers bicycle anatomy, maintenance, repair, and improvised solutions.

### Chapter 1: Bicycle Anatomy

| System | Components | Function | Maintenance Frequency |
|---|---|---|---|
| Drivetrain | Chain, chainrings, cassette, derailleurs | Converts pedaling to wheel rotation | Clean/lube every 100-200 miles |
| Braking | Brake levers, cables, calipers/pads (or disc) | Stopping | Check pads monthly, replace when worn |
| Wheels | Hubs, spokes, rims, tires, tubes | Rolling contact with ground | Check spoke tension monthly |
| Steering | Handlebars, stem, headset, fork | Direction control | Check headset tightness monthly |
| Frame | Main triangle, seat stays, chain stays | Structural backbone | Inspect for cracks annually |
| Seating | Saddle, seatpost, seatpost clamp | Rider support | Adjust height for comfort |
| Pedals | Pedal body, spindle, bearings | Foot-to-crank interface | Grease bearings annually |
| Bottom bracket | Spindle, bearings, cups | Connects cranks to frame | Service annually |

### Chapter 2: Essential Repairs

| Repair | Difficulty | Time | Tools | Frequency |
|---|---|---|---|---|
| Fix flat tire | Very low | 10-20 min | Tire levers, patch kit, pump | As needed |
| Adjust brakes | Low | 10-15 min | Allen keys, cable puller | Monthly |
| Adjust derailleurs | Moderate | 15-30 min | Screwdriver, Allen keys | Seasonally |
| Replace chain | Low | 10-15 min | Chain tool | Every 2,000-3,000 miles |
| Replace brake pads | Low | 10-15 min | Allen keys | When worn thin |
| True a wheel | Moderate | 20-40 min | Spoke wrench | As needed (wobble) |
| Replace cables | Low-moderate | 20-30 min | Cable cutters, Allen keys | Annually |
| Overhaul hubs | Moderate-high | 1-2 hours | Cone wrenches, grease | Annually |
| Replace bottom bracket | Moderate | 30-60 min | BB tool, grease | Every 2-3 years |

Flat tire repair: 1) Remove wheel from bike (quick release or axle nuts). 2) Deflate tire completely. 3) Insert tire lever under bead, hook to spoke. 4) Insert second lever 4-6 inches away, slide around rim (unseats one side of tire). 5) Pull tube out. 6) Inflate tube, listen/feel for leak. 7) If can't find: submerge in water (bubbles show leak). 8) Mark leak location. 9) Rough up area around leak with sandpaper (from patch kit). 10) Apply glue, let dry until tacky (2-3 minutes). 11) Apply patch, press firmly (60 seconds). 12) Check inside of tire for cause (thorn, glass, wire). 13) Partially inflate tube, insert in tire. 14) Seat tire bead on rim (use hands, not levers if possible). 15) Inflate to recommended pressure. 16) Reinstall wheel.

### Chapter 3: Drivetrain Maintenance

| Task | Frequency | Tools | Time | Impact |
|---|---|---|---|---|
| Clean chain | Every 100-200 miles | Degreaser, rag, brush | 15 min | Extends chain life 2-3x |
| Lube chain | After cleaning or rain | Chain lube (wet or dry) | 5 min | Smooth shifting, less wear |
| Check chain wear | Monthly | Chain checker tool or ruler | 2 min | Prevents cassette damage |
| Adjust front derailleur | As needed | Screwdriver, Allen key | 15 min | Clean shifting |
| Adjust rear derailleur | As needed | Screwdriver, Allen key | 15-30 min | Clean shifting |
| Replace chain | Every 2,000-3,000 miles | Chain tool, new chain | 10 min | Prevents drivetrain wear |
| Replace cassette | Every 2-3 chains | Cassette tool, chain whip | 15 min | Smooth pedaling |

Chain cleaning: 1) Shift to smallest chainring and smallest cog. 2) Apply degreaser to chain (or use chain cleaning tool). 3) Scrub with stiff brush (old toothbrush works). 4) Wipe chain clean with rag (backpedal through rag). 5) Clean chainrings and cassette (brush + degreaser). 6) Rinse if needed (water, not high pressure). 7) Dry chain thoroughly. 8) Apply lube: one drop per link, backpedal slowly. 9) Wipe excess lube off exterior (excess attracts dirt). 10) Wet lube for wet conditions; dry lube for dry conditions.

### Chapter 4: Wheel Truing

| Issue | Cause | Fix | Tool |
|---|---|---|---|
| Lateral wobble | Uneven spoke tension | Tighten spokes on opposite side of wobble | Spoke wrench |
| Radial hop | Uneven spoke tension | Tighten spokes in high area, loosen in low | Spoke wrench |
| Broken spoke | Impact, fatigue | Replace spoke (match length and gauge) | Spoke wrench, spoke |
| Loose spokes | Vibration, under-tension | Tighten all spokes evenly | Spoke wrench |

Wheel truing procedure: 1) Mount wheel in truing stand (or flip bike upside down, use brake pads as reference). 2) Spin wheel slowly. 3) Identify wobble: where rim moves left or right relative to reference point. 4) Find the center of the wobble. 5) Tighten spokes on the OPPOSITE side of the wobble (pulls rim toward that side). 6) Turn spoke nipple 1/4 turn at a time (small adjustments). 7) Tighten 2-3 spokes in the wobble area (center spoke most, adjacent spokes less). 8) Spin and check. 9) Repeat until wobble is gone. 10) Check spoke tension by squeezing pairs (should feel similar tension throughout).

### Chapter 5: Improvised Repairs

| Problem | Improvised Fix | Materials | Duration |
|---|---|---|---|
| Flat tire (no patch) | Stuff tire with grass, leaves, cloth | Natural materials | Get home (rough ride) |
| Broken chain | Remove damaged link, rejoin (shorter chain) | Chain tool (or rock + nail) | Functional (skip gears) |
| Broken spoke | Tape broken spoke to adjacent spoke | Tape, wire | Get home (wheel wobbles) |
| Broken brake cable | Use remaining brake only (front preferred) | N/A | Careful riding |
| Bent derailleur hanger | Carefully bend back with adjustable wrench | Wrench | Functional shifting |
| Loose headset | Tighten with available wrench | Wrench | Proper fix later |
| Torn tire sidewall | Boot with dollar bill, duct tape, or cardboard inside tire | Paper, tape | Get home |

### Reference Card

1. Keep the chain clean and lubed (a clean, lubed chain extends the life of every drivetrain component). 2. Check tire pressure before every ride (proper pressure prevents flats and improves efficiency). 3. Learn to fix a flat (the single most common repair; practice at home before you need to do it roadside). 4. Quarter turns only (when adjusting spokes or derailleurs, small adjustments prevent overcorrection). 5. Replace chain before it's worn (a worn chain destroys cassette and chainrings; cheap chain saves expensive parts). 6. Front brake has more stopping power (70% of braking force is front; learn to use it without flipping). 7. Carry a basic kit (spare tube, tire levers, pump, multi-tool; these fix 90% of roadside problems). 8. The bicycle is the most efficient vehicle (4x more efficient than walking; the best human-powered transportation ever invented).