Parts for a small wind turbine (D = 33 cm) Axis: 5 mm threaded rod Bearing: Radial bearing (D outside = 16 mm, D inside = 5 mm) The wing, nose and hub... are connected with M4x53mm screws. Next parts: disk generator
The wing is aerodynamically optimally calculated (high speed = 3, power = 20 watts at 10 m / s wind speed).