A new feathering composite propeller
for yachts suits Yanmar, Volvo, Bukh,
Kubota, Nani Diesel Saildrives, Shaft
drives and various tapers.
PRICE - $1985 incl. GST Allow 7-14 day 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
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
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)
