Power unit

Which power unit for which helm system?

If your helm system is hydraulic, it is advisable to refer to your helm system documentation to determine the capacity of the hydraulic steering cylinder fitted to the boat.

Motorboats with older Z-Drive bases, such as Four Winns or Ombrine, are generally fitted with cable steering with hydraulic assistance. For these boats, a universal Z-Drive kit should be installed.

Sailboats with mechanical steering systems can use one of two types of cylinder, depending on the space available and the possibility of installation:

• Hydraulic linear actuator: This self-contained unit consists of a hydraulic actuator, a reversible pump and a reservoir. The hydraulic linear power unit is attached directly to the rudder quadrant or, if no rudder tube anchorage is available, by adding a wicker arm. Advantages: no wear as the hydraulic circuit is closed + very low tiller friction.
• Electric linear actuator: Installation is similar to that of a hydraulic actuator, with the difference that this model takes up less space due to its monobloc construction. Strengths: powerful thrust + silent operation.

Which model of jack or pump should you choose, and which equipment for your boat's autopilot?

Hydraulic cylinder, tiller cylinder, linear cylinder, hydraulic pump, rotary motor... install everything you need to get the most out of your autopilot.

Lecomble & Schmit's 40ST16 Newave hydraulic linear actuator features an adjustable rod and integrated electric bypass. Easy to install, it's simple to install directly on the bar sector. The Raymarine electric mechanical actuator is designed for ST4000 / SPX-5 / EV100 Tiller pilots. Particularly robust, it is perfect for tiller sailboats. The Garmin hydraulic pump steers the boat in conjunction with the hydraulic steering system and according to the instructions transmitted via the pilot controller. Adapted to mechanical systems, theDD15 power unit from Simrad is particularly compact and powerful. The motor can be installed on boats from 30 to 40 feet. The universal Z Drive kit can be fitted to boats equipped with a sterndrive motor with power steering. The tiller is operated like a steering cable!

Choose the power unit best suited to your helm system and take advantage of the autopilot mode.