Air Balloon Motor for LEGO

thingiverse

Demo and assembly guide: https://youtu.be/5G4Wwa94_aM Exploded view in 3D viewer: https://skfb.ly/6QL8R Extra parts required: - Nitrile glove - Air balloon Takes approximately four meters of filament to print, which translates to about five hours at a speed of twenty millimeters per second on my printer. Printing with supports will result in a more visually appealing output. This can be achieved by placing the build plate at an angle of eighty degrees and applying heat through ironing. The optional parts, designated with names starting with "X_", can be omitted if desired. You can insert one balloon into another to increase wall thickness, particularly for two-walled balloons. Using a flywheel in combination with one balloon results in smoother operation, but it will not generate sufficient force to pull a vehicle. Alternatively, you can substitute the printed metal M5 washer with a metal one. It has been observed that PLA is not the most suitable material for this design due to its lack of slipperiness and fluidity. The clips tend to lose their effectiveness over time, causing the parts to separate.