Does the unit run smoothly?
Yes – this is a factor often commented upon in the feedback we have received from new Kiwiprop users. For any rotating mass the secret to minimizing vibration is to first lower the total mass of the rotating assembly and then ensure that the mass is concentrated as close as possible to the axis of rotation. The Kiwiprop is much lighter than comparable bronze units at < 3.5 kg but more importantly because of the composite blades being much lighter than the typical bronze blades of say a 2 bladed folder, the mass is much more focused towards the center of the unit. Combining these two factors produces a very smooth running unit that offers minimal vibration and much lower wear rates on stern bearings. Blade clearance to the hull is less critical than with folding propellers as the blade tips are a finer section than folding props. They do not need the thicker sections needed to contain the mass required to improve the reversing thrust from the additional centrifugal force.
