MAX-PROP automatic feathering propellers For may years APC succesfully represents MAX-PROP propellers on the Dutch     and West European market. MAX-PROP propellers are developed and produced in Italy. The unique MAX-PROP system has been patented all over the world! Max-Prop two and three blade automatic self-feathering low drag propellers are widely used on sailing yachts and are particularly suitable for racers. The MAX-PROP is the only propeller offering adjustable pitch without external controls, allowing the propeller to be matched precisely to a boat's size, weight, hull type and engine. This short and simple operation is done by opening the hub and readjust the central gears. By the same operation each propeller can be used for either right or left hand rotation installations. The special features of the MAX-PROP Drag One of the most important feature of the Max-Prop is that it feathers automatically with the forward momentum of the boat. Once feathered, it provides the least possible drag (similar to a folding prop) improving the vessel's sailing speed by an average of 15% above a conventional fixed blade propeller. Minimal resistance and very good manoeuvrability The biggest advantage of the Max-Prop is that it feathers automatically when sailing, as a consequence of water pressure. In this position the resistance is close to zero. Another advantage is that the Max-Prop has a very good manoeuvrability, which is achieved by its large blade area, the shape of the blades and the symmetrical profile of the blades. Efficiency In forward: the Max-Prop will offer 96% of the efficiency of a fixed blade propeller of the same diameter and pitch. The 4% loss in power can usually be eliminated by precisely matching the pitch of the Max-Prop to fit the boat engine combination. In reverse: the Max-Prop provides 80% more power than a comparable fixed blade propeller. The Max-Prop utilizes the same leading edge in forward as it does in reverse giving the propeller the same thrust in both directions, whereas on a fixed blade propeller in reverse the trailing edge becomes the leading edge therefore reducing its efficiency by 50% . Reliability The Max-Prop uses a "differential" type design so that the blades cannot fail to open in forward or reverse. This positive system eliminates the problem associated with a folding propeller and its use of centrifugal force to open the blades. In a recent survey of Seven Sea Cruising Association readers the Max-Prop received a perfect rating on no failures ( one of only two products to receive such high praise). About 32,000 Max-Prop are in operation today! Versatilitiy The Max-Prop offers the possibility of pitch adjustment without external controls. Changing the pitch is very simple; it is done by changing the setting of the gear inside the propeller (usually upon a haul out). The ability to adjust the pitch will help achieve the maximum efficiency from the engine without having to purchase a new propeller. On the new V.P. model the pitch is adjustable externally. Installation and maintenance The Max-Prop will fit directly onto your existing shaft when the boat is hauled for installation. The Max-Prop will be matched to your specific shaft taper and can even be fitted on a Sail-Drive unit. The only required maintenance is to grease the propeller at least every other year (all the new Max-Prop are fitted with grease fittings). Our propeller specialists will gladly advice you in getting the desired propeller. The instruction booklet of the Max-Prop is designed to answer all your questions on assembly of the Max Prop. To our Max-prop propeller catalog in pdf format.