This is a pericyclic gearbox consisting of just 4 bevel gears, and it’s biggest difference from conventional gears is, clearly, this weird wobbling motion which provides extremely high gear ratios.
More about it: https://www.youtube.com/watch?v=Z-zUTS5FPPc
The working principle, making and testing are available in the video
-m4 bolts
-2 x 6804 (20 mm) bearings
-3 x 6902 (15 mm) bearings
bushing_v3.stl | 852.9KB | |
handle.stl | 2.1MB | |
housing.stl | 905.3KB | |
lock.stl | 1.0MB | |
N1-42.stl | 8.7MB | |
N2-44_v1.stl | 12.0MB | |
N3-46_v2.stl | 11.2MB | |
N4-45_v2.stl | 3.7MB | |
shaft_v8.stl | 5.1MB | |
spacer.stl | 365.4KB |