Rotors
The five bladed rotors sit around (but are not directly connected to) a vertical axle. They are somewhat flexible and don't keep their angle perfectly but they're fairly solid, and the fact that they aren't fixed to the axle means that they start and slow down gradually, rather than at once when I turn the motor on and off, resulting in less stress on the motor.
They fold so as to collectively take up as little space as possible. I was worried that the spin of the rotors would dislodge the rotor blades from their open position, but this doesn't seem to be a problem.
Rotors
The five bladed rotors sit around (but are not directly connected to) a vertical axle. They are somewhat flexible and don't keep their angle perfectly but they're fairly solid, and the fact that they aren't fixed to the axle means that they start and slow down gradually, rather than at once when I turn the motor on and off, resulting in less stress on the motor.
They fold so as to collectively take up as little space as possible. I was worried that the spin of the rotors would dislodge the rotor blades from their open position, but this doesn't seem to be a problem.