Propulsion: Konrad PRSIII

The Konrad PRSIII is an alternative for aging Mercruiser Speedmaster III series drives. It has greatly simplified the conversion process of the SSMIII, with just a few easy steps. Most conversions can be completed in a matter of just a few hours. Konrad PRSIII has a high performance duty classification with a use of 100 hours per year for high performance applications at highly intermittent operation. Gross weight to horsepower is less than 12.2 kg per hp. The PRSIII is fitted with roller bearings spaced for optimum load carrying shaft supports capabilities, highly manufactured castings heat treated aluminum, high strength alloy steel gears utilizing performance marine technology, shafts made of alloy steel, and U-joints made from industry leading size for increased load carrying capacity and extended life. The Konrad PRSIII stern drive comes fitted with the following standard equipment: 540 HD upper housing assembly, 540 HP lower housing assembly, HD bell housing with bellows, and external steering back cover. The following options are available from Konrad: X-Factor lower housing assembly, drive extension spacer kits, HP upper gear set, tie bars, propellers, 42 oz. HP oil reservoir, and stern drive lifting bracket.

www.konradmarine.com

Propulsion: Konrad 560 Twin Prop

Konrad Marine of Hudson, WI USA is proud to introduce the latest addition to its robust 500 Series, the Konrad 560 Twin Prop. This stern drive package was designed to handle gasoline or diesel engine torque and was engineered to gain efficiency by sharing the torque load with dual propeller technology. Counter rotating propellers reduce propeller roll, greatly increasing low speed maneuverability for superb docking and substantially improving handling in reverse. The 560 reduces propeller slip, increasing fuel economy and top speed. With its state of the art engineering and highest quality components, the 560 is capable of exceeding commercial market demands. The Konrad 560 Twin Prop drive features two, one piece stainless steel propeller shafts, fitted with line protection seals. The specially designed stainless steel propellers vary in pitch up to a 16“ maximum diameter. The major components are manufactured in-house at Konrad, including the gear sets of high grade aircraft quality steel, heavy duty drive shafts and high quality, heat treated aluminum castings. To ensure customer satisfaction, Konrad tests all their stern drives for heat, noise and vibration prior to leaving their plant. Konrad’s 560 Twin Prop counter rotating drive is based on the military proven 520 with a heavy duty transom assembly. The 560 twin prop offers boat enthusiasts a complete propulsion system for the rigors of recreational and commercial duty on single engine vessels weighing up to 11,000 lbs. The 560 and all other Konrad stern drives are made in the U.S.A.

www.konradmarine.com