Rugged 3-line Hynautic Heavy-Duty helm pumps for commercial and pleasure boats up to 70 feet.Hynautic Heavy Duty helms combine one or two bi-directional axial piston pumps with pilot check and make-up check valving. The result is a helm thatprevents rudder feedback, is very efficient (even at low RPM), and is immediately adaptable to multi-station use. A wide choice of helm displacements and cylinder configurations make it easy to design systems for a variety of large boat performance requirements.SpecificationsHorsepower:Configurable for applications from 450-1500hpBoat Types:Planing hulls to 70'; Displacement hulls to 70'; Sailboats to 65'Helm:Choice of H-21, H-25, H-26, H-42-04 models; Other models by Special OrderTurns Lock-to-Lock:Depends on steering cylinder sizeSteering Wheel:Accepts most (Minimum 18"dia.)Steering Wheel Shaft:1" or 3/4" straight or tapered, depending on modelWarranty:Two-year warrantyMore informationFor a complete listing of Hynautic Series 20 and 40 Heavy-Duty Helm pumps plus a guide to helm pump and steering cylinder selection, see the guide toHynautic 3-Line Steering System Component Selection.