Designed by
Slava
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Description
Run by just 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 (thumbs from M sized gloves worked the best) or Silicon (worse) or PET (not tested) ones
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) (instead of printed ones)
- 105ZZ Bearings (x2) (noticed no difference in performance)
- Printed well with 0.6 nozzle at 0.2 layer height. Some parts (Cylider_Back_Lid and Valve_Lid_6mm) need supports. After printing cut away the brims from Cylinder_Ring parts.
Printed well in PLA with 0.6 nozzle at 0.2 layer height. Parts with "_support" in their names will print a bit prettier with supports. Parts with "X_" in their names are optional.
Assembly:
- Use 3d diagram as a guide: https://skfb.ly/6LQBR
- Cut off a glove finger tip (thumbs from M sized glove worked 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 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 th 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 for a while).
- Jams on a certain cylinder - this glove finger may need a bit more slack.
- Isn't rotated freely by hand - gears bolted too tightly to frame (should have a bit of play), some gear teeth didn't print very well, or the whole gear printed with "elephant foot" and runs too tight with another gear.
Design Files
File Size
Valve_Inner (supports).stl
248 KB
X_Crank_for_105ZZ_Bearing.stl
549 KB
Crank_Washer_M5.stl
64.5 KB
Crank_for_M5_Washer.stl
539 KB
X_6mm_to_Whistle.stl
825 KB
X_6mm_to_Tap_Water (supports).stl
543 KB
Cylinder_Plate (x3).stl
321 KB
X_Valve_Lid_Cartridge.stl
1.66 MB
X_2_Balloon_Cartridge.stl
1.68 MB
Piston (x3).stl
243 KB
Cylinder_Ring (x3).stl
120 KB
X_Valve_Lid_6mm_Flat_90 (supports).stl
1.02 MB
X_Valve_Lid_6mm_Flat (supports).stl
1.19 MB
Frame_Bottom.stl
496 KB
X_Valve_Lid_6mm_Vert (supports).stl
457 KB
X_Gears_1to8_2_Bevels.stl
739 KB
X_Pulley.stl
1.21 MB
Valve_Lid_Balloon.stl
1.23 MB
Gears_1to3_2.stl
879 KB
Gears_1to8_2.stl
843 KB
Frame_Top.stl
834 KB
Gears_1to8_1.stl
801 KB
Gears_1to3_1.stl
705 KB
Gears_1to2.stl
849 KB
Gear_Center.stl
273 KB
Helper_Finger_Height.stl
287 KB
X_Cylinder_Ring (02mm gap).stl
120 KB
Piston_Washer (x6).stl
77.6 KB
Cylider_Back_Lid (x3) (supports).stl
1.36 MB
Helper_Cylinder_Clip (x2).stl
560 KB
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