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FIX AND FOLDING BLADES PROPELLERS

FIX AND FOLDING BLADES PROPELLERS
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FIX AND FOLDING BLADES PROPELLERS

Product catalog summary
Overview: The document discusses the features and benefits of fixed and folding blade propellers for sailing boats, manufactured by Eliche Radice. The primary function of folding blade propellers is to significantly reduce propeller drag during sailing, achieving a reduction of about 90% compared to traditional fixed blade propellers.
Specifications: The folding blades open automatically due to centrifugal force, which increases with engine revolutions. In forward gear, the performance is comparable to fixed-blade propellers. It is recommended to accelerate the engine smoothly during the opening phase. Even at low revolutions, the centrifugal force is sufficient to open the blades. When the engine is off, a forward speed of 1 to 2 knots is enough to close the blades.
Reverse Gear Challenges: Folding blade propellers face challenges in reverse gear due to water pressure opposing blade opening and lack of support on the hub. Eliche Radice has developed special blade sections to keep blades fully open during reverse operation, improving maneuverability.
Product Range: The propellers are available in a wide range of right-hand and left-hand rotations to suit various hulls and engines. They are manufactured with precision, dynamically balanced, and eliminate vibrations and noise when properly selected.
Mechanical Characteristics: The propellers are made from OTMAN alloy with mechanical resistance of R 535 N/mm², yielding S 220 N/mm², and elongation A5 25%. The aluminum-magnesium alloy used in Sail Drive propellers offers high corrosion resistance and elasticity, allowing deformation without breaking upon impact.
Standards and Tolerances: The propellers are manufactured with ISO 484 class 1° tolerances, ensuring balanced movement and perfect closure during sailing.
Additional Information: The document includes detailed specifications for various propeller types, hub dimensions, and compatibility with different sail drive systems. The propellers are painted with a special epoxy powder for enhanced abrasion resistance.
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Catalog excerpts

FIX AND FOLDING BLADES PROPELLERS-1

LADES PROPELLERS

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FIX AND FOLDING BLADES PROPELLERS-2

ELICHE A PALE PIEGHEVOLI CON MOVIMENTO BILANCIATO ome ben nota, la funzione dell’elica a pale pieghevoli per scafi a vela è quella di: FOLDING-BLADES PROPELLERS WITH BALANCED MOVEMENT y now everybody knows about the function of the folding blades propeller for sailing hulls is: C B RIDURRE LO STRASCICO DELL’ELICA DURANTE LA NAVIGAZIONE A VELA TO REDUCING THE PROPELLER DRAG DURING SAILING (circa il 90% rispetto all’elica tradizionale a due pale fisse). (propeller drag is reduced about 90% compared to the traditional two fixed blades propeller). L’operazione d’apertura è automatica e viene eseguita...

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FIX AND FOLDING BLADES PROPELLERS-4

ELICA A 2 PALE ABBATTIBILI - SAIL DRIVE 2 Folding Blades Propeller - Sail drive Inches 8 9 10 11 12 13 14 15 175 200 225 255 280 305 330 355 380 mm 13 330 14 355 15 380 16 405 17 430 18 455 19 480 20 510 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • MOZZO TIPO HUB TYPE mm BUKH-NANNI-VOLVO YANMAR SD.20-31 M16 YANMAR SD.40 M20 M16 LOMBARDINI • • • • • • • • • • X Sail Drive-Nut 94905024 94905027 94905028 DIAMETER 7 DADO-SAIL DRIVE 94905026 94905029 94905032 PITCH mm D Inches ROTAZIONE SINISTRA / Left Hand Rotation KIT MOZZO SAIL DRIVE Sail Drive-Hub Kit YANMAR LOMBARDINI...

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FIX AND FOLDING BLADES PROPELLERS-5

ELICA IN ALLUMINIO - SAIL DRIVE Aluminium Propeller - Sail Drive PITCH mm D Inches ROTAZIONE SINISTRA / Left Hand Rotation DIAMETER Inches 355 15 380 16 405 17 430 18 10 11 12 13 14 15 16 17 225 255 280 305 330 355 380 405 430 mm 14 9 455 • • • • • • • • • • • • • • • • • • • • • • • • PITCH mm D Inches ROTAZIONE SINISTRA / Left Hand Rotation DIAMETER Inches 355 15 380 8 9 10 11 12 13 14 15 16 17 18 175 200 225 255 280 305 330 355 380 405 430 455 mm 14 7 16 405 17 430 18 455 19 480 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Le eliche Radice per trasmissioni Sail Drive sono...

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FIX AND FOLDING BLADES PROPELLERS-6

ottobre 2007 www.elicheradice.com [email protected] Via Valtellina, 45 - 20092 Cinisello Balsamo - Milano - Italia - (T) +39-02.660 493 48 - (F) +39-02.612 7688

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.