Balloon Powered Radial Engine

pinshape

Human: Run by simply blowing air into it. Demonstration: Exploded view in 3D viewer: https://skfb.ly/6LQBR If you like how it works, you can support me by purchasing the Pneumobile Chassis. Extra parts needed: M3x8 Bolts (x15) M3 Nuts (x15) Thin Nitrile Glove or Silicon ones work best PET ones not tested Optional parts: M3x12 or longer bolts (2x)(for the gears) M3 Nuts (x2)(for the gears) 6x4mm Silicon Pipe (can be found in aquarium shops) M5x10mm Washers (x2) 105ZZ Bearings (x2) Printed well with 0.6 nozzle at 0.2 layer height. Some parts need supports. Printed well in PLA with 0.6 nozzle at 0.2 layer height. Parts with "_support" will print better with supports. Parts with "X_" are optional. Assembly: Use 3D diagram as a guide: https://skfb.ly/6LQBR Cut off a glove finger tip (M sized gloves work well) Pull it onto a Cylinder_Ring (use Helper_Finger to leave enough height) Connect a Piston to it with two Washers Clamp the Cylinder_Ring between Cylinder_Plate and Cylinder_Lid Clip them with Helper_Clamp so they won't fall apart at once Bolt them together to Plate_Top Repeat for the other 2 cylinders Insert the Crank with 2 Washers Fix it in place with Frame_Bottom Bolt all the parts together Put the Valve_Inner in place Bolt the Valve_Lid into place The engine should be running! Troubleshooting: Rotated freely by hand, but struggling when working - the inner valve may have too much friction against the frame (sanding the valve and the frame may help). Jams on a certain cylinder - this glove finger needs a bit more slack. Isn't rotated freely by hand - gears bolted too tightly to frame or gear teeth didn't print well.