Accurate Mechanical Solar System - Hand-Crank or Motorized

This 100% 3D-printed mechanical solar system includes all eight planets, designed with custom gear ratios to precisely reflect their true relative orbital periods. To make the model practical in size, both the planets' physical sizes and their distances from the Sun are mapped using a logarithmic scale:

Model Diameter (cm) = 1.29*log(Diameter/2000)     ~ True Diameter in kilometers

Model Distance (cm) = 3.323*ln(Distance/25)     ~ True Distance from Sun in million kilometers

Included in the files are a hand-crank and motorized input. The hand crank requires only the 3D printed parts listed. The motor parts for the integrated electronics (motor, battery, PCB) are from these links:

MOTOR KIT           BATTERY

PRINTING AND ASSEMBLY NOTES:

• The center pin needs to very rigid and should not bend easily, print accordingly

• Any follower gear will most likely need some finishing with sanding and some sort of lubricant

• Refer to attached instructions for how to assemble

• Max part sizes are: 212x212mm (rightBase) and 175mm tall (centerPin)

There is definitely area for improvement in this model and design, feel free to comment about or remix my design.

Inspired by M4NU's Spooletarium, but designed completely from scratch, with all planets using different components and overall geometry.

https://www.printables.com/model/1700026-spooletarium-mechanical-solar-system

MODEL INFO:

• One crank of input is ~177.29 Earth Days

• Numbers on top base are in kilometers and are measured at inner edge each rim

• Mercury: 17/48 : 34/6    [Driver/Follower]

• Venus: 17/48 : 40/18

• Earth: 17/48 : 48/35

• Mars: 17/48 : 35/48

• Jupiter: 17/48 : 12/60 : 15/26

• Saturn: 17/48 : 12/60 : 10/43

• Uranus: 17/48 : 12/60 : 12/60 : 20/49

• Neptune: 17/48 : 12/60 : 12/60 : 16/77