Fibonacci Verticle Whirl-i-Gig
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Spinner is based on the Fibonacci 1:1.6 ratio (The Golden Rule) used by artists for centuries and throughout nature.
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Model information
- Source
- Printables
- Category
- Outdoor & Garden
- License
- Creative Commons — Attribution
The Fibonacci sequence is a mathematical sequence that appears in many natural patterns, and art works that are pleasing to the eye. Each square side dimension is the sum of the previous two sides. A quarter circle is drawn in each square to achieve the Fibonacci curve.
I used this this to develop a Whirl-a-Gig by using sections 5 and 8 below for the blade design. The axis is located at the bottom-right of square 5. The assembly mounts on my porch railing (2" x 6" wood).
Very little breeze, from any direction, spins the blades.
I was concerned about printing the full heigh blades failing during the print, so I made each one in three sections. The full size blades files are also provided.
| 1 | ||
| 1 | 2 | 2 |
| 2 | 3 | 1.5 |
| 3 | 5 | 1.667 |
| 5 | 8 | 1.600 |
| 8 | 13 | 1.625 |
| 13 | 21 | 1.615 |
| 21 | 34 | 1.619 |
| 34 | 55 | 1.618 |
The Golden Ratio (1:1.618)
Cross Section
