Balloon Powered Radial Engine 3D Printer Model Free Download

Description Files (34)

Summary

Made a LEGO compatible version of the motor:
https://www.thingiverse.com/thing:4197583

Run by just blowing air into it. Demonstration:
https://www.youtube.com/watch?v=_FDZzKAFSz4

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

If you like how it works, you can support me by purchasing the Pneumobile chassis:
https://cults3d.com/en/3d-model/game/pneumobile-pneumatic-toy-car (3d Viewer: https://skfb.ly/6LV6D)

Works with this remote:
https://www.thingiverse.com/thing:3675568
Or with simpler remote from the Vapemobile set:
https://www.thingiverse.com/thing:3606204

Extra parts needed:

M3x8 Bolts (x15)
M3 Nuts (x15)
Nitrile Gloves (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.

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.

3Cyl_Engine.dwg	6.9MB
3Cyl_Engine.dxf	39.8MB
3cyl_Radial_Motor.f3d	5.0MB
Crank_for_M5_Washer.stl	538.9KB
Cylider_Back_Lid_x3.stl	1.4MB
Cylinder_Plate_x3.stl	320.8KB
Cylinder_Ring_x3.stl	120.1KB
Frame_Bottom.stl	495.9KB
Frame_Top.stl	834.4KB
Gears_1to2.stl	849.3KB
Gears_1to3_1.stl	704.8KB
Gears_1to3_2.stl	878.8KB
Gears_1to8_1.stl	801.3KB
Gears_1to8_2.stl	843.4KB
Gear_Center.stl	273.1KB
Helper_Cylinder_Clip_x2.stl	560.4KB
Helper_Finger_Height.stl	286.7KB
Piston_Washer_x6.stl	77.6KB
Piston_x3.stl	243.3KB
Valve_Inner.stl	247.7KB
Valve_Lid_Balloon.stl	1.2MB
Washer_M5_x2.stl	64.5KB
X_2_Balloon_Cartridge.stl	1.7MB
X_6mm_to_Tap_Water.stl	542.7KB
X_6mm_to_Whistle.stl	825.3KB
X_Crank_for_105ZZ_Bearing.stl	549.4KB
X_Cylinder_Ring_02mm_gap.stl	120.1KB
X_Gears_1to8_2_Bevels.stl	738.9KB
X_Piston_Tight_x3.stl	237.6KB
X_Pulley.stl	1.2MB
X_Valve_Lid_6mm_Flat.stl	1.2MB
X_Valve_Lid_6mm_Flat_90.stl	1.0MB
X_Valve_Lid_6mm_Vert.stl	457.3KB
X_Valve_Lid_Cartridge.stl	1.7MB

Balloon Powered Radial Engine 3D Printer Model

Summary

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