ID
1346240
$ 15,819.64
1-2 weeks delivery time
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The Max-Prop Boomerang 120 / 4 Blade 25" Spinner 120mm moves into shaft position when torque stops, reducing drag and improving control for sailboats with hydraulic transmissions. Its patented spring system ensures blades are in vane position at idle or off, with high efficiency, smooth operation, up to 80% more reverse power, and simple bolt-on installation.
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Max Prop Boomerang 120 / 4 Blade 25" Spinner 120mm
Advanced Shaft Position Propeller
The Max-Prop Boomerang is an advanced shaft-position propeller that automatically moves into the shaft position as soon as no torque is applied to the propeller shaft. This design is essential for modern sailboats with hydraulic transmissions, where the shaft has virtually no resistance when the engine is not running.
Unique Patented Technology
Max-Prop engineers have developed a patented radial spring package integrated into the body of the Boomerang model. This spring system automatically pushes the blades into the default vane position when the engine is idling or switched off, regardless of shaft rotation or boat speed.
Key Features
- Automatic vane position thanks to the integrated spring package
- High efficiency with smooth operation using the anti-shock principle
- Excellent braking power with up to 80% more reverse power than fixed blades
- Low drag design for increased speed under sail
- Easy bolt-on installation without complex adjustments
- External pitch adjustment without disassembly
- Wide application range for shafts from ø35mm to 100mm and ø1 ¼” to 3 ½”
- Stable ground clearance at high speeds and in turbulent flows
Technical Data
Material Nikkel Aluminium Bronze (Ni.Al.Br.) Number Of Blades 4 Series Boomerang Pitch 25" Sales Unit 1 Piece
Brand: Max Prop (Article code: 784412025) (Barcode: 8720193064208)
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