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Kiwi Feathering Propellers |
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Just Propellers WA are pleased to offer KiwI Feathering props to the Perth Yachting market.The 3 blade feathering composite propeller suits Yanmar, Volvo, Bukh, Kubota, Nani Diesel Saildrives, Shaft drives and various tapers.
The all new 4 blade will revolutionise the 50-100 horsepower market with all the unique characteristics of the 3 blade and more. More details to follow.
  WOW. ALL NEW 4 BLADE FOR 50-100 HP
AVAILABLE OCT 2011. P.O.A
PRICE - $1985 incl. GST CALL MICHAEL FOR DETAILS 1300 4 PROPS
Allow 5-7day delivery
The Kiwi Feather Prop has been carefully engineered in New Zealand to provide new levels of all around propeller performance. The Kiwi Feather Prop provides outstanding motoring capability without any compromise in sailing performance at a substantially reduced price over competing products.
Fully automatic feathering for minimum drag when sailing.
Blades free to align with water flow not the shaft.
No shaft lock required.
Three Blades for faster smoother motoring.
Full Thrust in reverse.
No gears
Full adjustable pitch for optimum motoring performance
Composite blades minimise corrosion, weight and shock forces.
Exceptional value
Fits all standard shafts & Saildrives. Rated for 20 - 50 hp
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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.
| Type |
3 blades. Left or right hand rotation |
| Diameter |
16" (406mm) and 18" (457mm)
Plastic blades easily trimmed to 15", 17" or intermediate diameters |
| Pitch Range Degrees |
16 degrees to 20 degrees. Reverse 20 degrees |
Pitch Range
Inches-equivalent |
10" to 15" for 16" prop
11" to 17" for 18" prop |
| Castings |
AB2 Bronze to Marine standard |
| Blades |
Dupont Zytel Black |
| Nose Cone and Nut |
Dupont Delrin (Acetal) |
| Spring & Cap Screws |
Stainless steel |
| Blade Retaining Pins |
Stainless steel |
| Shaft Diameters |
1.25" and 1" or SAE 16/32 Spline for all Saildrives. |
| Shaft Taper |
SAE taper per ft = 0.7500 in +/- 0.002 (1/16" per inch) |
| Shaft Nut Thread |
As requested. Saildrive standard M16, AB2 Bronze |
| Keyway |
1/4" square, parallel key |
| Maximum Power |
50 hp |
| Weight |
3.5 Kg |
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