I don't entirely understand either, except for the novelty, but that doesn't stop me from taking on the commission!
OK, if the motor question is too hard, try this next one. These wings are part of another unique clock that I am building for a customer. To what object do they belong? Hint: I was able to find a free 3D model online, so it is a popular object. I imported the .stl via Pattern Sculptor, which is my new favorite software program. I was very pleased with the alignment on this double-sided carve.