Kiwi Feathering Propellers
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Just Propellers WA are pleased to offer KiwIFeathering props to the PerthYachting market.The 3 blade and 4 blade feathering composite propeller suits Yanmar, Volvo, Bukh, Kubota, Nani Diesel Saildrives, Shaft drives and various tapers. As from the 01.05.2024 the three blade kiwi propellers will be charged out by actual size in 4 price sections, 15.5 inch,16.5 inch,17.00 inch and 18.50 inch diameters. |
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INNOVATION The Kiwi-Feather Prop represents a simple new solution to the low resistance feathering yacht propeller which really does align the blades with the water flow not the shaft, thus always ensuring maximum sailing performance. Geared feathering props line up with the shaft, which may be at 15 degrees or more to the water flow. If one blade turns to the water flow, then the others turn against it through the gearing, hence auto rotation and increased drag. Folding props have to be as heavy as possible to give at best a semi-effective reverse but this introduces vibration from the hydrodynamic shock of the thick blade tips and any out of balance conditions from shaft or blade bearing wear. DESIGN FEATURES: Aligns feathered blades with water flow, not the shaft. Patented features Feathered propeller does not auto rotate. Eliminates shaft locks. Full pitch immediately in reverse. Compensates for the higher reduction ratio gearboxes utilise in reverse to provide maximum manoeuvrability. Robust, low stress design without highly stressed gears. Fail safe design features built around composite blades and nose cone which minimise corrosion and lubrication problems. Hi-tech Zytel blades give strength and light weight with low inertia and no shock loading. Easy to replace and lubricate but well locked in against blade loss. Near neutral buoyancy means blades are responsive to the smallest changes in water flow thus always minimising drag when sailing. Blades pivot over cast stub shafts, not cantilevered from washer type bearings with very high stress loading. Eliminating the gearing allows the economical production of 3-bladed units which are more efficient and smoother running. Easy pitch adjustment with self locking set screws in each blade allow optimal performance adjustment and eliminates inventory. Common boss accommodates all standard shafts a |
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SPECIFICATION:
The Kiwi-Feather Prop is a simple, new solution to the low resistance, feathering yacht propeller, that really does align the blades with the water flow, not with the shaft, thus ensuring maximum sailing performance.
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