About this 3D model
Ornithoptera that I have entirely created, not tested, but with a sufficient motor, there is the possibility that it steals, I do not guarantee it, even if I did the calculations of surface alarms of center of mass .. I have long watched videos of real birds in order to recreate the variable impact movement on the wing race, the wings will have to be covered with a plastic film style old plastic bag of light races ... in the middle of Files there is the engine model to see the clutter, I leave it but not really useful for your impression obviously. If you have specific creative needs, I would be happy to model some parts for you