The main features changed from Prototype 2 are:

1.Screw locations for the motor at the bottom of the casing. Allowing the motor to be easily removed and installed to the casing easily

2. Fillets added to the sharp edges near the raceway to reduce the friction between the bearing and the walls of the casing

3. Combined bottom and top rotors together to become one part this will ensure the distance between them is maintained at the desired amount

4. Wedge feature include in the rotor to allow the attach to the motor shaft without the need of adhesion. This will not only allow the rotor to be removed when needed but also will offer better grip between rotor and shaft and prevent the shaft from rotating freely from the rotor

5. Nut and bolt to be used to hold the bearings in place instead of rod as it offers a stronger structure and does not require adhesive to stick to the rotors

Next Steps: I will next attempt to run various simulations on the design to validate its functionality.