Two stage gearbox, 7.7:1 ratio (parameterized)

thingiverse

I've just uploaded my custom general purpose library, tyler.scad. My aim is to develop a multi-stage, customizable gearbox that can work with various motors and ultimately generate a complete gearbox plus motor mount for hobby robotics, by accepting parameters of any junk DC motor. So far, I have worked on this project and I'll continue until it meets my goals. Since I haven't tested or finalized the settings yet, customizer support is off. However, when you download the OpenSCAD file, you should be able to tweak it quite a bit. It's all 3D-printed except for the #6 or M3 screws required to assemble it (similar to any PC computer case screw). My current gearbox system performs fairly well, especially now that I've included pegs on input and output gears. Right now it uses them to test with a drill, but it's simple enough to change them into a normal bore to accept a motor, just as shown in the pictures/video. Check out my video here: https://youtu.be/CJwQ1PdIg2s Assembly instructions: First of all print each gear and the top and bottom housing parts. Then assemble them as you would want and use one or more short #6 or M3 screws to hold everything together (basically, just any computer case screw). It's recommended that some sort of lubricant be added; I personally used regular 3-in-1 oil.