The file 'Modular Gear Reducers 3D Printer Model' is (SLDPRT,sldprt,STL,SLDASM) file type, size is 661.8KB.
3:1 gear stages that can be assembled to get a gear ratio to any power of 3.
I needed to reduce the speed of a motor by a large degree. My first tries used a a worm gear, but I didn't have my support settings dialed in well enough to print one yet. I went with this design so it would be easy to add or remove stages depending on the desired gear ratio.
For my current project, I am using 6 stages of gear reduction. 3^6=729 so I have a 729:1 reduction in speed. Included with this is a 1:729 increase in torque.
10t_spur_gear.SLDPRT | 572.0KB | |
30t_spur_gear.sldprt | 582.5KB | |
gear_mount.SLDPRT | 138.5KB | |
gear_mount.STL | 114.6KB | |
gear_stage.SLDASM | 196.0KB | |
gear_stage.STL | 701.0KB |