Kiwiprops™

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K4 - Specifications

 
 
Type:          Feathering: 4 Blades - Left or Right Handed Rotation  (NB: Rotation can be switched - Requires new Blade set, Springs  & Blade Carrier casting)
 

Diameter - Nominal " 

16.50”   17”   17.50”   18”   19.50”   20.50”  Tip diameter will be ~ ½” greater 
Pitch Range - Degrees º 18 to 24 degrees – User Adjustable in Ahead  .... Reverse always 24 degrees
  Rear blade face aligned with aft joint line = 24 °  ~ 1.5 Turns Out =  - 3° 
 
Boss / Castings: 316 Stainless Steel ex Rod Stock or   Investment Cast
Blades: DuPont Zytel™ HTN Black ~ 50 % Glass
Nose Cones / Collar:

Glass Reinforced Polypropylene  - Black - Saildrive

SS 316 - Shaft Nose Cone & Collars


 

Spring and Cap Screws: Stainless Steel 316
Pitch Screws: Stainless Steel 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 & 40  - M24 x 2.0
  Saildrives - ALL M16 x 2 - Yanmar SD40, 50, 60’s are M20 x 2
  CAUTION: First batch of SD60's are M20 x 2.5 in error
 Keyway: SAE 1¼” = 5/16”       1-3/8” = 5/16”      1-1/2” = 3/8”  -  Parallel
  ISO 30 mm 8 x 7  35 mm 10 x 8  40 mm 12 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 )