Balloon-powered race car, balloon
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Description
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This aerodynamic balloon-powered race car uses the recoil of the air stream to propel itself forward – completely battery-free! Simply attach the inflated balloon to the rear nozzle, the air escapes, and propels the car. A fascinating example of recoil principles, ideal for children, schools, or as a fun project for home.
The car consists of only two parts (body and wheels) and can be printed with almost no support. Thanks to the clever plug connection, the balloon sits securely and can be easily changed.
How it works:
The balloon is placed on the upper nozzle of the car. Important:
👉 Completely roll up the neck of the balloon so that no long neck hangs out! Only in this way can the air stream escape backwards and the car will be properly propelled.
✅ Correct: Balloon sits compactly on the upper opening, neck is rolled up (see image with green checkmark)
❌ Incorrect: Balloon is attached to the rear or the neck hangs down (see image with red cross)
🖨️ Print settings
- Nozzle diameter: 0.4 mm
- Layer height: 0.2 mm
- Infill: 9 - 15 %
- Support structure: Yes
- Raft: No
Boost Me (for free)
If you like this project, I would appreciate a small contribution!
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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