Air Balloon Motor for LEGO
Free

Exploded view in 3d viewer: https://skfb.ly/6QL8R

Extra parts needed:

  • Thin Nitrile glove
  • Air balloon

Takes 4m of filament to print (about 5h at 20mm/s on my snail of a printer). Will print a bit prettier with supports (80deg. overhang, touching buildplate) and ironing. Parts with names starting with "X_" are optional.

  • You can insert one balloon into another to get thicker walls. Meant for 2-walled balloon. Idles well with one (with a flywheel), but will hardly pull any vehicle.
  • You can use metal M5 washer instead of printed one
  • Found that PLA isn't the best material for the design: isn't very slippery, and "fluid" (the clips stop pushing the parts together with time)

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Air Balloon Motor for LEGO

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Creative Commons Attribution-NonCommercial-ShareAlike

You can distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, with attribution and under the same license.

CC BY-NC-SA Licensed under CC BY-NC-SA
Files Included

25 downloadable files:

View 3D
X_Valve_Lid_6mm_Pipe.stl
STL Model
1.3 MB
File size
View 3D
Valve_Lid_45.stl
STL Model
1.4 MB
File size
View 3D
X_Valve_Lid_Vert.stl
STL Model
1.4 MB
File size
View 3D
Balloon_Key.stl
STL Model
1.7 MB
File size
View 3D
X_Key_Bigger.stl
STL Model
2.0 MB
File size
View 3D
Valve_Inner.stl
STL Model
247.7 KB
File size
View 3D
Crank_Washer_M5.stl
STL Model
64.5 KB
File size
View 3D
X_6mm_Pipe_End.stl
STL Model
825.3 KB
File size
View 3D
X_M3_Nut_Flywheel.stl
STL Model
320.6 KB
File size
View 3D
X_Crank_Shaft_Lego_T.stl
STL Model
115.1 KB
File size
View 3D
X_Crank_Shaft_Lego_X.stl
STL Model
82.5 KB
File size
View 3D
X_Crank_Washer_M5_Tight.stl
STL Model
63.8 KB
File size
View 3D
Crank_Lego.stl
STL Model
139.5 KB
File size
View 3D
Crank_Shaft.stl
STL Model
386.3 KB
File size
View 3D
Plate_Lego.stl
STL Model
1.0 MB
File size
View 3D
X_Helper_Cylinder_Clip_x2.stl
STL Model
560.4 KB
File size
View 3D
Piston_Washer_x6.stl
STL Model
77.6 KB
File size
View 3D
Crank_Piston_x3.stl
STL Model
244.5 KB
File size
View 3D
Cylinder_Front_Lid_x3.stl
STL Model
321.2 KB
File size
View 3D
Cylinder_Back_Lid_x3.stl
STL Model
1.1 MB
File size
View 3D
Cylinder_Ring_x3.stl
STL Model
121.1 KB
File size
View 3D
Valve_Clip_x3.stl
STL Model
82.7 KB
File size
View 3D
Plate_Valve.stl
STL Model
409.5 KB
File size
View 3D
X_Valve_Lid_6mm_Pipe_Intake.stl
STL Model
533.8 KB
File size
View 3D
ALL_PARTS_ARRANGED.stl
STL Model
59.0 MB
File size
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