Air Balloon Motor for LEGO

Prints (0)

Description

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)

Design Files

File Size

Valve_Inner.stl
248 KB
Crank_Washer_M5.stl
64.5 KB
X_6mm_Pipe_End.stl
825 KB
X_M3_Nut_Flywheel.stl
321 KB
X_Crank_Shaft_Lego_T.stl
115 KB
X_Crank_Shaft_Lego_X.stl
82.5 KB
Crank_Lego.stl
140 KB
ALL_PARTS_ARRANGED.stl
59 MB
X_Valve_Lid_6mm_Pipe.stl
1.27 MB
Valve_Lid_45.stl
1.41 MB
X_Valve_Lid_Vert.stl
1.39 MB
Balloon_Key.stl
1.68 MB
X_Key_Bigger.stl
2.02 MB
Plate_Lego.stl
1.05 MB
X_Helper_Cylinder_Clip_x2.stl
560 KB
Piston_Washer_x6.stl
77.6 KB
Crank_Piston_x3.stl
245 KB
Cylinder_Front_Lid_x3.stl
321 KB
Cylinder_Back_Lid_x3.stl
1.1 MB
Cylinder_Ring_x3.stl
121 KB
Valve_Clip_x3.stl
82.7 KB
Plate_Valve.stl
409 KB
X_Valve_Lid_6mm_Pipe_Intake.stl
534 KB
X_Crank_Washer_M5_Tight.stl
63.8 KB
Crank_Shaft.stl
386 KB

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