Kiwi Prop Specifications

K3 3 bladed Kiwiprop * K4 4 bladed Kiwiprop

(Updated July 2013)

Now we can support engines as small as 13 HP with our new smaller blades: 14" 14.5" and 15" Kiwiprops

K3 specifications - (Three bladed Kiwiprop)         three (3) bladed Kiwiprop

Type
Feathering 3 Blade, Left or Right hand rotation
 
Diameter (Nominal)
14"- 14.5"- 15"- 15.5" - 16" - 16.5" - 17" - 18.5" - 19.5"
" (Diameter at tips ~ 1/2" greater than nominal)
 
Pitch
18 to 24 degrees (Fixed blade propeller
Reverse always ~24 degrees
 
Boss / Casting
316 Stainless Steel ex Rod or Investment cast
 
Blades
Dupont Zytel Black ~40% glass
 
Nose Cone and Nut

DupontPETP White (Saildrive)

GF PP - Glass Filled 30% Polypropylene - Shafts

 
Spring and Cap Screws
Stainless Steel - 304 / 316
 
Blade Retaining Pins
Titanium
 
Shaft Diameters

SAE - 7/8" - 1" , 1- 1/8" , 1-1/4"

ISO - 25mm , 30mm

Saildrive SAE 16/32 Spline on 28 mm

 
Shaft Taper

SAE 1:16

ISO 1:10

 
Seals
PETP Boss or Neoprene V Seals (Blades)
 
Nut Thread

SAE - 5/8" 3/4" or 7/8" UNC for 1-1/4"

ISO M16 or M20 x 1.5

Saildrive M16 or M20 x 2

 
Keyway

SAE - 1/4" or 5/16" Parallel

ISO - 6x6 or 8x7mm Parallel

 
Maximum Power
< 55 hp @ > 1340 Shaft rpm
 
Minimum Power
> 15 hp @ < 1400 shaft rpm in ahead and < 1250 shaft rpm in reverse
 
Weight

~ 7.7 lb

~3.5 kg

 

 

K4 specifications - (Four bladed Kiwiprop)         four (4) bladed Kiwiprop

Type: Feathering:

4 Blades - Left or Right Handed Rotation

(NB: Rotation can be switched - Requires new blade set & Blade Carrier casting)

Diameter - Nominal "

16.50” 17” 17.50” 18” 19.50” 20.50”
Diameter at the tips will be ~ ½” greater than nominal

Pitch Range - Degrees º 18 to 24 degrees – User Adjustable in Ahead .... Reverse always 24 degrees
Rear blade face aligned with aft rear joint line = 24 ° ~ 1.5 Turns Out = 3° Decrease in Pitch
Boss / Castings: 316 Stainless Steel ex Rod Stock or Investment Cast
Blades: DuPont Zytel™ HTN Black ~ 50 % Glass
Nose Cones: Glass Reinforced Polypropylene - Black
Spring and Cap Screws: Stainless Steel 304 / 316
Pitch Screws: Stainless Steel 304 / 316
Blade Retaining Pins: Titanium – ¼”
Shaft Diameters:

SAE 1:16 taper 1.250”, 1.375”, 1.500”

ISO 1:10 taper 30 or 35 mm
Saildrives SAE 16/32 17th Spline on 28 mm
Blank bored for local machining to non standard tapers

Nut Threads: SAE - 1¼” = ⅞”: 1-3/8” = 1”: 1-1/2” = 1-1/8” are all UNC
ISO 30 - M20 x 1.5 Beneteau’s pre ~ 1992 are x 2.0
ISO 35 - M24 x 2.0
Saildrives - ALL M16 x 2 mm except Yanmar SD40 & SD50’s with M20 x 2.0 mm
Keyway: SAE 1¼” = 5/16” 1-3/8” = 5/16” 1-1/2” = 3/8” - Parallel
ISO 30 mm 8 x 7 ISO 35 mm 10 x 8 - Parallel
Power Ratings: Ranges: < ~ 100 hp @ > ~1300 shaft rpm or > ~ 50 hp @ < ~1300 shaft rpm
Weight: ~ 7.5 kg ( Depends upon blades & internal dimensions )