The Apocalypse

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Bicycle and cart production ​

This section covers the essential knowledge and practical steps for producing bicycles and carts in a post-collapse environment. It focuses on sourcing materials, basic fabrication techniques, assembly, maintenance, and adaptation for transport and labor needs. The goal is to enable local communities to restore and manufacture these vital transportation tools to improve mobility, trade, and productivity.

Introduction to Bicycle and Cart Production ​

In a post-apocalyptic or survival scenario, efficient transportation is crucial for expanding from local survival to regional function. Bicycles and carts provide low-cost, human-powered mobility and cargo transport, essential for moving goods, people, and resources without reliance on fuel or complex infrastructure.

Producing bicycles and carts locally requires understanding their fundamental components, sourcing or fabricating parts, and mastering assembly and repair techniques. This section provides comprehensive guidance on these topics to empower survivors to build and maintain these vehicles using available materials and tools.

A photo of a partially assembled bicycle frame in a rustic workshop, surrounded by hand tools and metal parts, illustrating the hands-on nature of bicycle production.

Understanding Bicycle Components and Design ​

Before production, it is vital to understand the basic structure and function of a bicycle. A standard bicycle consists of the following main components:

  • Frame: The structural backbone, usually made of steel or aluminum tubing, connecting all parts.
  • Wheels: Comprising rims, spokes, hubs, and tires, wheels enable smooth rolling.
  • Drivetrain: Includes pedals, crankset, chain, and gears to convert human power into motion.
  • Brakes: Mechanisms to slow or stop the bicycle, typically rim or drum brakes.
  • Handlebars and Steering: Allow directional control.
  • Saddle and Seatpost: Provide rider comfort and support.

Understanding these parts helps in sourcing materials and fabricating replacements or new components.

Frame Design and Materials ​

The frame geometry affects ride comfort, stability, and load capacity. Common frame types include diamond frames for road and mountain bikes and step-through frames for ease of mounting.

Steel is the preferred material for local production due to its availability, weldability, and durability. Tubing can be salvaged from old bicycles, metal furniture, or pipes. Welding or brazing skills are essential for frame assembly.

A bicycle frame with labeled parts including top tube, down tube, seat tube, chain stays, and seat stays, on a white background with black line art.

Cart Types and Their Uses ​

Carts complement bicycles by enabling heavier cargo transport. Types of carts include:

  • Handcarts: Simple two- or four-wheeled carts pushed or pulled manually.
  • Bicycle trailers: Attach to bicycles to carry additional loads.
  • Animal-drawn carts: Larger carts pulled by draft animals, useful for heavy or bulk transport.

Carts can be constructed from wood, metal, or a combination. Wheels can be repurposed from bicycles or wheelbarrows.

Sourcing Materials and Parts ​

Salvaging and Recycling ​

In a survival context, scavenging parts from abandoned bicycles, wheelbarrows, carts, and machinery is often the primary source of components. Key parts to salvage include:

  • Steel tubing and frame sections
  • Wheels and tires
  • Chains and sprockets
  • Bearings and hubs
  • Brake components
  • Nuts, bolts, and fasteners

Raw Materials ​

When scavenging is insufficient, raw materials must be sourced or fabricated:

  • Steel tubing: Can be obtained from scrap metal yards or repurposed pipes.
  • Wood: For cart frames and decking; hardwoods are preferred for strength.
  • Rubber: Tires may be reused or patched; solid rubber or wooden wheels can be alternatives.
  • Fasteners: Nails, screws, and bolts can be forged or salvaged.

Fabrication Techniques ​

Frame Construction ​

  • Cutting and Shaping: Use hacksaws, metal files, and grinders to cut tubing to length and shape joints.
  • Joining: Welding (arc or gas) is preferred for strong joints. Brazing or riveting can be alternatives if welding is unavailable.
  • Alignment: Use jigs or simple measuring tools to ensure frame geometry is correct for safe handling.

Wheel Building ​

  • Rims and Spokes: Salvage rims and spokes from old wheels. Replace broken spokes and true wheels using spoke wrenches.
  • Hubs and Bearings: Clean and lubricate bearings; replace damaged parts.
  • Tires and Tubes: Patch punctures or replace tubes. Solid tires or wooden wheels can be used if pneumatic tires are unavailable.

Cart Fabrication ​

  • Frame Assembly: Construct wooden or metal frames using nails, screws, or welding.
  • Axles and Wheels: Use bicycle or wheelbarrow wheels; fabricate axles from steel rods.
  • Decking and Sides: Use planks or sheet metal for cargo surfaces and sides.

A photo of a craftsman welding a bicycle frame in a dimly lit workshop, sparks flying, demonstrating metal joining techniques.

Assembly and Adjustment ​

Bicycle Assembly ​

  • Attach wheels to the frame, ensuring proper alignment.
  • Install drivetrain components: crankset, pedals, chain, and gears.
  • Mount brakes and adjust cable tension for effective stopping.
  • Fit handlebars and saddle, adjusting for rider comfort.
  • Lubricate moving parts to reduce wear and improve efficiency.

Cart Assembly ​

  • Secure wheels and axles to the frame.
  • Attach decking and sides.
  • For bicycle trailers, fabricate a hitch mechanism compatible with the bicycle frame.
  • Test load capacity and stability before use.

Maintenance and Repair ​

Regular maintenance extends the lifespan of bicycles and carts:

  • Lubrication: Apply oil or grease to chains, bearings, and moving parts.
  • Tire Care: Check for punctures, maintain proper inflation if pneumatic.
  • Brake Adjustment: Ensure brakes engage smoothly and firmly.
  • Frame Inspection: Look for cracks or corrosion; repair promptly.
  • Wheel Truing: Adjust spokes to keep wheels straight and round.

Basic repair skills such as patching tubes, replacing spokes, and welding frame cracks are essential.

A photo of a person repairing a bicycle tire outdoors, using a patch kit and pump, illustrating field maintenance.

Adaptations for Survival Needs ​

Bicycles and carts can be modified to better suit survival conditions:

  • Cargo Racks and Panniers: Add racks or bags for carrying supplies.
  • Fat Tires: Use wider tires for better traction on rough terrain.
  • Electric Assist: If batteries and motors are available, retrofit for electric assistance.
  • Multi-Purpose Carts: Design carts to carry water containers, firewood, or harvested crops.

Tools Required for Production ​

Essential tools include:

  • Metal cutting tools: hacksaws, grinders
  • Welding equipment: arc or gas welders
  • Hand tools: hammers, screwdrivers, wrenches
  • Measuring tools: tape measures, squares, plumb lines
  • Wheel truing stand or improvised jig

Acquiring or fabricating these tools is a priority for sustainable production.

Safety Considerations ​

  • Use protective gear during welding and cutting.
  • Ensure frames and carts are structurally sound to prevent accidents.
  • Test brakes and steering thoroughly before use.
  • Store tools and materials securely to prevent injury.

Conclusion ​

Producing bicycles and carts locally is a critical step in rebuilding civil infrastructure and transport capabilities after a societal collapse. Mastery of material sourcing, fabrication, assembly, and maintenance enables communities to regain mobility and improve logistics without dependence on scarce fuel or complex machinery.

For further knowledge on animal-drawn carts and plows, see Animal-drawn plows and carts.

A photo of a finished bicycle with attached cargo trailer loaded with supplies, parked on a dirt road in a rural setting, symbolizing practical transport solutions.