Raymarine Wheel Drive – Autopilot drive unit for yachts up to 7500 kg.
ST4000 MK2 rudder system kit
The kit includes an ST4000 MK2 drive unit, mounting hardware and power cable. The ACU-100, EV1 and p70s are not included. The drive unit is fully sealed and suitable for most common steering wheels, including many folding wheels. A simple manual clutch mechanism allows quick disengagement and ensures smooth steering.
Technical data:
- Maximum recommended boat weight: 7,500 kg
- Revolutions per minute (rpm): 9
- Torque: 30 Nm
- The ACU-100 control unit is suitable for the drive.
The steering drive is designed for pleasure craft with a total weight when fully laden not exceeding 7,500 kg. It is recommended to allow for a reserve of at least 30%. If your existing steering drive has failed, it is worth considering a minor repair; most of the necessary spare parts are always in stock.
Download EV-100 Autopilot Installation Guides:
EV1 and ACU Installation guide
ST4000 MK II steering gear Installation guide
p70s and p70Rs Installation guide
Steering angle sensor Installation guide
Evolution p70 and p70Rs pilot user and operating manual
Added:
We recommend adding a steering angle sensor as well. M81105.
Further information about autopilots can be found Raymarine from the website








