I'm more into stars myself ...wareagle said:Planetary gearing is a cool thing! I find planets fasinating to watch for some odd reason.
Anyway, planetary drives have some interesting features, dependent on what's held stationary, what is driven and where the output is taken. With a sufficiently ... I don't want "complex" but that's the idea ... system of clutches, they can offer several combinations of ratio and direction changes from one set. Well, actually only one direction change unless you count not going anywhere at all as a direction.
Sorveltaja, you're right about not seeing any complete sets, though. I think Boston Gear has the ring gears, though, which is a start. After that, it's figure out what will fit for the sun and planetary gears and build to suit. Or do as you did and create your own ring to fit existing gears. This would be an interesting project to watch.