MAXIMIZING YOUR PERFORMANCE AT SEA.

Transcription

1 MAXIMIZING YOUR PERFORMANCE AT SEA

2 MAX-PROP AUTOMATIC FEATHERING PROPELLER Max-Prop is the leading low drag propeller on the market today. Since starting production in the 1970 s Max-Prop has proven itself on racing and cruising boats around the world. With over 35,000 propellers in the water, the Max-Prop is tested daily in the harshest conditions and has established itself as the most efficient and reliable low drag propeller. The combination of low drag, outstanding reverse power, efficient forward performance and fail safe design makes Max-Prop the ideal Sailboat propeller on the market today. Now with the introduction of the ECOWIND, Max-Prop has taken a revolutionary step forward in the propulsion of Sailboats. LOW DRAG: Under sail the Max-Prop will increase sailing speed by about 15%, the largest difference being noticed when sailing in light air. When sailing with a fixed propeller the vessel has to overcome the fixed blade drag, installing a Max-Prop maximizes sailing performance. GREAT REVERSE: The Max-Prop provides 80% greater reverse power than a comparable fixed blade propeller. In reverse the blades rotate 180 in ¾ turn of the shaft giving the Max-Prop the same efficiency in reverse as in forward. MAX-PROP FEATURES RELIABILITY: Max-Prop uses a differential type design so all blades open in unison in forward or reverse. The extraordinary reliability of the Max-Prop has made it an overwhelming choice for long range cruisers. Adjustability: The pitch is adjustable on all Max-Props. This allows you to optimize the propeller pitch to the engine to achieve maximum efficiency.

3 MAX-PROP PROPELLER MODELS Original design, over 35,000 sold 30 years of proven performance 30 years of unequalled reliability Very low drag Outstanding reverse Internal 2 degree pitch adjustment Smoother operation with the 3 blade Greater thrust with the 3 blade Classic: Two and Three Blade Variable Pitch VP: Three and Four Blade All the features of the Classic and more External adjustment Fine 1 degree pitch adjustment No special tools required to adjust pitch Smooth and efficient under power Legendary Max-Prop reverse performance Improved thrust with the 4 blade Quieter operation with the 4 blade One piece installation on the 4 blade All the features of the VP & Classic, plus Higher speeds for a given RPM Much lower fuel consumption Extended range under power Better acceleration Less engine noise at cruising speed Reduced shock load to the drivetrain Easy one piece installation Adjustable fine tuning dial ECOWIND: Four Blade

4 Two and Three Blade Classic The original Max-Prop was designed in the early 70 s for the high tech race boat market. Since proving itself in the racing arena, the Classic Max-Prop has earned its way into the mainstream market as the leader in low drag propellers. Today you will find the Classic Max-Prop on a wide range of vessels from modest 25 foot daysailers to 150 foot classic schooners. While satisfying the racer with low drag, its efficiency under power in both forward and reverse will keep cruisers happy too. With regards to performance under power, both two and three blade propellers will power the boat well in flat water. The three blade has a major advantage when going against heavy winds and seas, it will maintain the boat speed up to 30% better than the two blade. Moreover, a three blade propeller will run much smoother and reduce vibrations as it is balanced around three points as opposed to two. With its unsurpassed thrust performance ability in both forward and reverse, the Classic Max-Prop has become a legend among the sailing community. Two blade Classic on Sail Drive. Available from 11 to 48 For shafts 3/4 to 3 ½ or metric equivalent Also available for a SailDrive

5 Three and Four Blade VP The Max-Prop VP is an enhancement of the highly successful Classic. The VP provides simple external pitch adjustment using a breakthrough patented system. This system allows for easy pitch adjustment by a diver in a matter of seconds. The finer 1 degree adjustment of the VP provides the ability to tune the propeller for ideal range and fuel economy, or for motor sailing. When compared to the three blade, the four blade provides improved balance making it the smoothest under-power Max-Prop yet. The additional blade also improves thrust when under-power against heavy wind and seas. The four blade is shipped fully assembled. This new design makes the installation as easy as installing a fixed propeller, with minimal assembly required. Robert Perry on Max-Prop: I am always surprised by the number of sailors intent upon good sailing performance who are willing to accept less than maximum speed under sail as well as under power... in my mind the Max-Prop is the finest tool for the job... Available from 14 to 40 For shafts 1 to 2 ½ or metric equivalent Also available for a SailDrive

6 The all new Max-Prop ECOWIND propeller is a true revolution in propulsion technology for sailboats. The patented spring based design drives the propeller pitch automatically to its optimum position according to the load. When the boat is accelerating the pitch flattens to allow the engine RPM s and boat speed to increase quickly. Progressively as the vessel gets up to speed and the load decreases, the pitch increases. FEATURES: Four Blade ECOWIND The result, compared to a fixed pitch propeller is more boat speed with the same RPM s, or the same boat speed at a lower RPM. The Max-Prop ECOWIND is four blade propeller designed to combine maximum efficiency and perfect balance (no vibrations). As an added feature the Max-Prop ECOWIND uses a pitch adjustment ring which allows you to tune the propeller pitch exactly to your boat and engine combination. Because the Max-Prop ECOWIND adjusts to the loads in play, it will never overload the engine and will respect the engine manufacturer required RPM s. Speed / RPM on 47 Foot Yacht Higher top speed cruising in calm conditions: The light load on the propeller allows the pitch to increase and the result is a higher speed at a given RPM. Higher top speed in rough conditions: The heavy load forces the propeller pitch to decrease, letting the engine increase its RPM resulting in more power in the water, meaning more boat speed. Much lower fuel consumption (at any speed below hull speed): At cruising speed, the pitch adjusts to the load. This almost always results in a lower engine RPM at a given speed, without overloading the engine, resulting in a much lower fuel consumption.

7 Extended range under power (due to the lower fuel consumption): An important feature for ocean passages. The ECOWIND can increase your fuel range by up to 30%. Better acceleration: As a boat at rest needs a lot of power to accelerate, the ECOWIND reduces the pitch during the acceleration process resulting in more power, and better acceleration. Acceleration in itself is not important for a sailboat but the extra power at low speed helps while maneuvering. Very easy installation: The installation of the Max-Prop ECOWIND is very simple. The propeller is delivered assembled. Just slip the hub on the shaft, thread and tighten the nut, thread the two, lock screws for the nut, install the zinc anode (3 screws), and it is done! Much less engine noise at cruising speed: The fact that the engine runs at lower RPMs at cruising speed translates into much lower engine noise. Fine tune the pitch: If your engine achieves either too much or too little RPM at max throttle, just turn the pitch adjustment ring to a higher or lower setting to attain the correct RPM (no special tools are required). Low drag: Just like other Max-Prop propellers, the ECOWIND feathers to a low drag position while sailing. Available from 14 to 32 For shafts 1 to 2 or metric equivalent Also available for a SailDrive

8 Propeller Recommendation Sheet: Name Phone: Work Street Address Home City State Zip Fax Country Address Vessel Information: Boat Manufacturer Model Weight/Displ Length Overall Waterline Length Beam Draft Designed Hull Speed Fin Keel Full Keel Multihull *Engine Manufacturer *Model Number *Rated Horsepower * Max Rated Rpm s Transmission Reduction ratio Existing Propeller Diameter and Pitch Two or Three Blade *Shaft Diameter (All items with a * MUST be filled out to spec a propeller) Shaft Taper Dimensions If the vessel is not a U.S., Canadian, or European production boat it may be necessary to provide the taper dimensions listed below. A = Shaft Diameter = F= Taper Length = L = Taper Small End = K = Keyway Width = H = Thread Diameter and Pitch = Aperture Dimensions Due to the extended length of the Max-Prop, it may be necessary to provide the aperture dimensions listed below to ensure that the propeller will fit the boat. I = J = M = N = K L I J M 2 N O K = O = L = Beverly Park Rd., Lynnwood, WA Tel: (425) or (800) Fax: (425) info@pyiinc.com Note: This form can be found online at