# The best dimensions for the Joe Cell

Wed, Apr 29, 2015If you try to build a Joe Cell, then think about the Golden Ratio, 1.618033988749895 and it’s multiples. Our solar system has a similar configuration, certain orbital periods are closely related to phi.

Mercury | Venus | Earth | Jupiter | Saturn | |

Power of Phi | -3 | -1 | 5 | 7 | |

Decimal Result | 0.24 | 0.62 | 1.0 | 11.1 | 29.0 |

Actual Period | 0.24 | 0.62 | 1.0 | 11.9 | 29.5 |

Therefore if you choose the diameter of the cylinders try to align them as close as possible to this numbers:

1.0

1.618033988749895

2.618033988749895 *

4.23606797749979

6.854101966249686

11.090169943749476

17.944271909999163

29.03444185374864

46.978713763747805

76.01315561749645

122.99186938124426

199.0050249987407

- Note: Don’t start with a center tube less than 2 inch.

**See also:**