• Built a compressed air-powered 'wobbler' engine in a 4-person group

  • SOLIDWORKS modeling and GD&T

  • 3D printing, laser cutting, metalworking fabrication of piston, cylinder, crank disk, flywheel, mounting plate, and base plate

  • Extensive testing

• Run the engine in a competition of the longest running engine as the air pressure decreases

• SOLIDWORKS modeling and GD&T drawings for each major component (not including additional hardware)

• Fabricated the flywheel (pictured right) out of aluminum on a lathe and drill press

• Performed tests of the engine running in preparation for the runoff competition

• Functioning wobbler engine able to maintain momentum for extended periods of time without fail

• 1st place winners of 'The Last Wobbling Wobbler' competition in a pool of ~30 engines

Key Learnings: For making an effective wobbler engine to work at low air pressures, it is essential to consider the weight distribution of the flywheel. In order for the engine to maintain momentum without excess torque required, there needs to be a careful balance of mass on the interior and outer rims of the flywheel. Additionally, the application of graphite powder and white lithium grease aids in the reduction of friction within the system that would inhibit movement.