100:1 Compound Planetary Gear Reducer

thingiverse

Featured In These YouTube Videos: - Two in series https://youtu.be/wsk3gqiS__M Torque Capabilities Please note that I designed this gearbox for a demonstration model so it would be easy for everyone to understand how a compound planetary works, which is why I omitted the 3rd module that increases torque capabilities. Because of that, this gearbox cannot handle much load. How This Works - One hundred turns of the input sun gear will result in ring gear #2 making one full rotation. These are designed to be able to mount them in series on the channel or drive them with the included stepper motor mount. You will need to scale the channel longer if you want to use two gearboxes and the stepper motor mount on the same channel, but keep in mind it is very boring to watch the second gearbox rotate as it is very slow. - This gearbox cannot be back-driven every piece of plastic on it will snap before you get the input to turn. Compatibility - This gearbox is exactly the same form factor as my 1379:1 gearbox. The mounting channel and back cover are exactly the same parts but keep in mind that the gears themselves are incompatible. Gearing Information: - The gear ratio of two of these in series is ten thousand to one Gears Used Planets: four Helix angle twenty degrees Pressure Angle twenty-five degrees - Planetary Gearset #1 (Input End) Tooth Module = two point eighteen seven five - Sun = ten teeth - Planets = ten teeth - Ring = thirty teeth - Planetary Gearset #2 (Output End) Tooth Module = one point two eight six eight - Sun = eighteen teeth - Planets = sixteen teeth - Ring = fifty teeth Other Important Info: CAD Files? - I included the Fusion 360 project with this, but the most recent version of this project can be downloaded in lots of different formats from this link: http://a360.co/2wadZdV - Feel free to create your own modifications and parts for this project and if you do make sure you create a remix and upload them I'll link to them and possible create a collection for all of them! Show Your Work! - Make a "make" and show everyone what you made! Everyone will thank you for it! For More Cool Gearbox Projects, Don't forget Subscribe to Gear Down For What?! https://www.youtube.com/c/GearDownForWhat Thanks!