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Diameter: 330 mm - 430 mm
Propellers Diameters 330mm to 430mm or 13″ to 17″ Shaft Diameters 22mm to 30mm or 7/8″ to 1.25″ Power For engine up to 40hp
Bruntons Propellers
Diameter: 380 mm - 510 mm
Propellers Diameters 380mm to 510mm or 15″ to 20″ Shaft Diameters 22mm to 35mm or 7/8″ to 1.5″ Power For engine rated to 75hp
Bruntons Propellers
Diameter: 470 mm - 900 mm
Propellers Diameters 470mm to 900mm or 19″ to 35″ Shaft Diameters 35mm to 75mm or 1.5″ to 3″ Power For engine rated to 350hp
Bruntons Propellers
Diameter: 330 mm - 508 mm
Pitch: 178 mm - 381 mm
... 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% ...
Diameter: 14 in - 18 in
Pitch: 6 in - 25 in
Our propeller model RAPIDO is leading the innovation race in its field thanks to the special gearless patented mechanism. The strong pre-loaded spring inside the body offers unique characteristics and takes the feathering ...
EWOL Sailboat Propellers
... and with the latest generation “SWORD blades” that are efficient and silent. E3 Andromeda is a cutting-edge feathering propeller made by EWOL using high-resistance stainless steels. Like her larger sisters E3 ORION ...
EWOL Sailboat Propellers
... under difficult environmental conditions such as strong winds, limited spaces, rough seas, etc. E3 Orion propeller, available for both the shaft line and the anti-shock device for Sail-Drive called ...
EWOL Sailboat Propellers
Diameter: 15 in - 18 in
Composite boat propellers - the new generation of folding propellers Taking advantage of modern composite materials, the Flexofold Composite boat propeller hub is ...
Flexofold ApS
Diameter: 12 in - 20 in
Pitch: 6 in - 18 in
... between the blades ensures a synchronized folding mechanism. Protective cover over the gearing. Integrated and easily replaceable anodes on the propeller hub. Large shock absorbers for quiet opening ...
Flexofold ApS
Diameter: 14 in - 20 in
... a synchronized folding mechanism. Protective cover over the gearing Large and easily replaceable anode Large shock absorbers for quiet opening of the propeller Special innerhub to protect the saildrive ...
Flexofold ApS
Diameter: 44 mm - 152 mm
EASYDRIVE Foldable Propeller: The Ultimate 3-Blade Propeller for Maximum Performance The 3-blade propeller was specifically designed for riders who push the limits of ...
Diameter: 44 mm - 152 mm
The EASY DRIVE PLUS aluminum propeller. Suitable for the EASY DRIVE PLUS engine.
Diameter: 368 mm - 495 mm
Pitch: 18 mm - 24 mm
Diameter: 394 mm - 521 mm
Pitch: 18 mm - 24 mm
... feathering and folding propellers. FULL POWER REVERSE Tests have shown that the efficiency of the 2-blade Gori propeller in reverse is equal to or better than most 2- or 3-bladed ...
Gori Propeller
... Unique profile for a minimum drag in closed position. Geared blades for simultaneous closure. We do not manufacture folding propellers for saildrives.
Diameter: 12 in - 24 in
... EXPERIENCE... Manufactured here at Darglow, the FeatherStream yacht propeller is a simple solution to many problems that can be caused by fixed propellers. When sailing, the propeller ...
... nozzle profile A ducted propeller gives up to 30% higher thrust at low speed compared to an open propeller. Brunvoll HE nozzle profile is recommended for ships with high bollard pull requirements ...
... efficient power. The EASY ships fully assembled, making installation similar to a fixed propeller, basically slide it onto the shaft, nut it in place and the propeller is ready to go.
Diameter: 43 mm
Pitch: 11 mm
Lightest fully foldable composite propeller designed and manufactured with engineering plastics free from hydrolysis, corrosion and cavitation for sailboats since 1994
Ultimoo Composite Propeller
The VARIPROP 2-blade (DF 80 and DF 107) is the standard propeller for smaller sailing yachts with an output of 6 – 40 kW. The 2-blade is ideal for such sailing yachts since it has very high efficiency under power, as ...
SPW
New blade design is up to 20% more efficient than previous bronze models Use of Duplex 2507 for the blades allows a very thin cross section, while retaining great strength Body components cast in 316L O-ring seals on the blades and main ...
Seahawk
... K3 Horsepower Range: 37~ 15 to ~ 60 hp Diameter Range: 14.50" to 19.50" Rotation: Left or Right Hand Mounting: Shaft or Sail Drive Materials: SS316 and Composite Pitch Ahead: 18 - 24 degrees Pitch Astern: ...
Kiwiprops
... Less drag than 2 or 3 blade fixed propellers Saildrive models feature ‘fail-safe’ cushion hubs All stainless steel construction Full installation kit with each propeller Propeller ...
... Mark III is the third generation of Martec folding props. And it%u2019s the lowest drag sailboat propeller anywhere. Thirty years of continuous development and improvement has resulted in a folding ...
Martec
A folding propeller is a mechanical device mounted at the aft end of a vessel's propeller shaft. The rotation of its twisted blades creates hydrodynamic thrust, propelling the craft forward. The blades are feathered when the motor is off, reducing drag and making for a substantial increase in speed.
ApplicationsThese propellers are found primarily on sailboats, but can be useful on the emergency back-up motors of powerboats.
TechnologiesSuch propellers are generally made of copper-nickel, bronze, stainless steel or other alloys. Two or three articulated blades are mounted on a streamlined hub with circular rack and pinion gear. When the propeller or sail-drive shaft stops turning, water flowing over the blades folds them together, limiting drag. Velocity gain can reach one or two knots, not insignificant during a race.
How to chooseChoice will depend on the nature and diameter of the transmission, be it propeller or sail-drive. Other factors include engine make, model and power, and the reduction ratio of the reversing gearbox.
- Increased speed under sail
- Slower maneuvering response
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