Epicyclic Planetary Gearbox 43.3:1 No Hardware, Less Backlash NEMA 17

myminifactory

Updates! 4/27/17 - Made Another Version of This with a Higher Gear Ratio; They Are 100% Compatible. http://www.thingiverse.com/thing:2277105 - Might Not Be Released Yet... 4/14/17 - The D-Shaft Hole Was Not Perfectly Centered on the One Piece Sun. Fixed This Issue with One Piece Sun V2. Uploaded the Rotating Base http://www.thingiverse.com/thing:2166517. 2/27/17 - I Designed a One Piece Sun Gear for This, One Version with a Large Drive Gear on It and One Version with a 5mm D Shaft Hole; The One Piece Sun Gear Is Compatible with the 3 & 4 Module Planet Gears. If Your Using the 4th Module You May Choose to Use the #2 Sun Gear in Module 4 in Conjunction with This. Using the One Piece Sun is a Good Upgrade for This as It Cuts Down on Backlash. I Designed This Gearbox for My Modular Robot Arm Project, Check It Out! : Original Model: http://www.thingiverse.com/thing:2105057; EZ Print Model: https://www.thingiverse.com/thing:2153317; Lazy Susan Base: http://www.thingiverse.com/thing:2186716. Both Models Are 100% Compatible with This Gearbox (& the 66.46:1 Gearbox) and Each Other. Assembly: Align the Planet Gears in Order as Shown in the Main Picture, Insert a Sun Gear, Snap Ring Gear #1 On, Inset All Sun Gears, Snap the Other 2 or 3 Ring Gears On. Also, You Will Need to Close the Gap in the Rings Before You Spin This Gearset or Else It Could Skip Teeth and Get Out of Alignment. For This I Have Included the Ring Closures, That Fits Over All the Rings. For Any Instructions I May Have Missed, Please Refer to This: http://www.thingiverse.com/thing:2081324; This Gearbox Is Very Similar in Concept. How It Works: When You Rotate Sun Gear #1 (The Sun Gear with the D-Shaft Hole) The Planet Gears Orbit That Gear Causing Sun Gear #3 to Rotate at the Exact Same Speed as Sun Gear #1. Now, When the Planet Gears Make a Full 360 Degree Rotation Around the Sun Gears, Ring Gear #2 ( and the Optional Ring Gear #4) Will Move 27.7 Degrees, ( 2 Teeth). The Other Important Thing to Realize Here Is That Ring Gears #1 & #3 Will Be at the Same Potential and Ring Gears #2 & (Optional #4) Will Be at the Same Potential. The Use of Ring Gear #4 and the Optional Ring Gear #4 Will Be at the Same Potential, and the Use of Ring Gear #4 and the Optional Ring Gear #4 Will Be at the Same Potential. The Use of Ring Gear #4 and the Optional Ring Gear #4 Will Be at the Same Potential. The Use of Ring Gear #4 and the Optional Ring Gear #4 Will Be at the Same Potential. For More Cool Projects and Upgrades, Don't Forget to Follow Me on Thingiverse and Subscribe to My Youtube Channel, Gear Down For What? https://www.youtube.com/c/GearDownForWhat