Kiwi Prop Specifications
(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)
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
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
K4 specifications - (Four 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, 35, 40 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: |
Between ~ 50 and 80 hp depending on shaft rpm |
Weight: |
~ 7.5 - 10 kg ( Depends upon blades & internal dimensions ) |
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