Sailboat propeller M series
foldingshaft drivesaildrive

sailboat propeller
sailboat propeller
sailboat propeller
sailboat propeller
Add to favorites
Compare this product
 

Characteristics

Application domain
for sailboats
Technology
folding
Propulsion
shaft drive, saildrive
Number of blades
2-blade
Diameter

Min.: 330 mm
(13 in)

Max.: 508 mm
(20 in)

Pitch

Min.: 178 mm
(7 in)

Max.: 381 mm
(15 in)

Description

By now everybody knows about the function of the folding blades propeller for sailing hulls is: TO REDUCING THE PROPELLER DRAG DURING SAILING (propeller drag is reduced about 90% compared to the traditional two fixed blades propeller). The opening operation is automatic and is caused by the centrifugal force, increasing according to the engine revolution. In forward gear the pressure on the blades allows a performance equal to the fixed-blades propeller. During this opening phase a quick acceleration of the engine is not advisable, and we recommend to make it smoothly and gradually. Even at low revolutions the centrifugal force is enough to opening the blades. When the engine is off, a forward speed of 1 to 2 knots generates sufficient water pressure for the blades to close. Reverse gear has always been the main problem for folding blades propellers. Mainly due to the water pressure acting in opposition to the blades opening and the lack of a support point for the blades on the hub, only partially open, and the blades float, causing an unstable and insecure condition when maneuvering. In order to avoid this inconvenience we studied and tested special blade sections that allow the blades to remain fully open during reverse operation with positive maneuvering results.
*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.