🚗 Junkyard Auto

Every car in the scrapyard is a parts bin full of precision-engineered components begging for a second life.

Modern cars are rolling electronics labs. An alternator is a three-phase generator capable of 100+ amps. A starter motor delivers brutal torque in a compact package. Ignition coils step up 12V to 40,000V. Window motors are geared DC units with enough force to move a glass pane against gravity. Wiper motors spin slowly and continuously with enormous torque through a worm gear. Seat heaters are flexible resistance elements designed to distribute heat evenly. HID headlight ballasts generate high-voltage AC to ignite xenon gas. And the humble spark plug is the world's most reliable ignition source.

All of this hardware costs pennies at the scrapyard but hundreds from a supplier. One trip to the junkyard with a socket set and a pair of bolt cutters, and you've got the raw materials for welders, go-karts, BBQ rigs, hidden doors, and things that would make your insurance agent cry.

Builds

Suggested Build Order

Start with simple motor reuse, progress toward vehicle builds:

1. #222 — Wiper Motor Rotisserie — Simplest motor application. Instant utility.
2. #223 — Spark Plug Cannon — Brief ignition assembly.
3. #220 — Ignition Coil Tesla Coil — High-voltage from car parts.
4. #225 — Seat Heater Sous Vide — Resistive heating control.
5. #224 — Window Motor Secret Door — Mechanical integration + fabrication.
6. #219 — Alternator Welder — Three-phase AC-to-DC conversion.
7. #226 — HID Headlight UV Curer — High-voltage ballast circuits + UV optics.
8. #221 — Starter Motor Go-Kart — Full vehicle dynamics. The showpiece.

Related Categories

• Mechanical & Kinetic — Motor-driven motion and energy transfer
• Power & Energy — Alternator generation and energy conversion
• Functional Machines — Workshop tools and vehicle builds

📚 Reference Guides

• Appliance Teardown Guide
• Tools Needed
• Sourcing Guide
• Difficulty & Ratings Guide