3D printed RC truck rear axle - steel rod version

thingiverse

UPDATE (August 11, 2016): Do not print this project. A superior version is now available online at http://www.thingiverse.com/thing:1715175. This remix builds upon the excellent work of MrCrankyface (http://www.thingiverse.com/MrCrankyface/about). I sought to enhance the rear shaft's stability by substituting it with a 10 mm smooth steel rod, typically used in 3D printers, instead of the original 3D printed component. To prepare the steel rods, I employed a grinder to create chamfers on both ends and along the center area. The large gear features two M3 nuts internally, allowing the M3 screws to securely attach it to the rod. Similarly, the wheel hex is reinforced with multiple layers of textile thread (black in color) and cyanoacrylate, ensuring an unbreakable bond. I also modified the large gear to integrate its teeth into the center, thereby bolstering their structural integrity as they are now supported on one side. You are encouraged to improve this design; the zip archive contains the OpenSCAD source code. To demonstrate the project's performance, I conducted tests using a Proxxon at 5,000 RPM, which can be viewed at https://www.youtube.com/watch?v=tXvomSdxGBo