With few exceptions, power transmission is a field where wobbling is a bad thing. We generally want everything running straight and true, with gears and wheels perfectly perpendicular to their shafts, with everything moving smoothly and evenly. That’s not always the case, though, as this pericyclic gearbox demonstrates.
This is a companion discussion topic for the original entry at https://hackaday.com/2024/06/19/bent-shaft-isnt-a-bad-thing-for-this-pericyclic-gearbox/