The file 'Emmett’s Planetary Gearset Reloaded (parametric) 3D Printer Model' is (stl,scad) file type, size is 1.1MB.
Inspired on http://www.thingiverse.com/thing:59075 (Differential Planetary Gearset), but I did it as a modified version of http://www.thingiverse.com/thing:53451(Gear Bearing) script instead.
The concept is EXACTLY the same as Emmett's Planetary Gearset, but I did it using two stacked Gear Bearings instead.
The total gear ratio is printed in the side of the rings (both of them).
Tolerance is a little too tight (0.15) and the attack angle is modified from 45 to 30, making it even worse.
If your machine is not tuned to precision or if you're printing in PLA instead of ABS, consider increasing it.
emmett_planetary_gearbox_lower_v1.stl | 4.4MB | |
emmett_planetary_gearbox_upper_v1.stl | 5.4MB | |
planetary_gears_assemb.scad | 12.5KB |