Kit mise à jour de l’unité de puissance ST4000 à MKII

Autopilot Mk II Wheel Drive and Installation Kit

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Raymarine

E12093

ST4000 power unit upgrade kit to MKII

Designed for ST4000 autopilot owners, the Raymarine E12093 kit enables an upgrade to the Mk II drive unit, providing compatibility with wheel steering systems from 1 to 3.5 turns lock-to-lock and 3 to 8-spoke wheels. This kit integrates a modern power unit into the existing ST4000 system. The kit includes the drive unit, pedestal bracket, spoke clamping inserts, screws, drill bits, an Allen key, ball joints, a 4.5m power cable, and, if supplied, a rudder angle sensor.

Retail priceBenefit from the professional rate

917,30€

917,30€ ~~978,00€~~

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In stock

Free pickup point shipping over €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

Find an installer

Support service

Opt for additional installation assistance

Technical specifications

Mounting type	Mounting on wheel and pedestal
Material	ABS plastic and metal
Color	Black
Compatible models	Raymarine ST4000 autopilots
Product dimensions	Overall diameter: 361 mm; Front coverage diameter: 228 mm; Height: 135 mm; Motor tube: Ø 48 mm, length 171 mm (+ 60 mm cable clearance)
Finish	Matte gray
Installation type	Mounting on wheel and pedestal
Kit contents	Driving wheel unit, pedestal mount, 3 clamping inserts for 16 mm radius, 3 clamping inserts for 12 mm radius, 3 clamping collars, 6 M5 x 16 mm clamping screws, 4 #10 x 3/4 in support screws, drill bits (6 mm, 4 mm), 3 mm Allen key, 2 ball joints, tiller pin, 3 #8 x 3/4 in cheese-head screws, stud, 2 nuts, 2 #8 x 3/4 in countersunk screws, 4.5 m power cable, cable clip and screw, rudder position sensor (if provided)
Product type	Wheel drive unit for autopilot

Detailed description

The Raymarine E12093 upgrade kit is designed for Raymarine ST4000 autopilot system owners looking to modernize their power unit. This kit replaces the old unit with a Mk II drive, integrating the technology of Raymarine’s Evolution autopilot range. It provides a solution to extend the lifespan of existing ST4000 systems by improving the performance of the rudder control unit.

Compatibility and Technical Specifications

The drive wheel unit included in this kit is compatible with wheels featuring 3, 4, 5, 6, 7 or 8 spokes. It is designed to operate with steering systems having 1 to 3.5 turns lock-to-lock. The unit has a front cover diameter of 228 mm (9.0 in) and an overall diameter of 361 mm (14.2 in). Its height is 135 mm (5.3 in), with a motor shaft diameter of 48 mm (1.9 in) and a length of 171 mm (6.7 in), requiring an additional 60 mm (2.4 in) clearance for the cable. This unit integrates with the existing ST4000 autopilot controller, offering a targeted upgrade rather than a full system replacement.

Installation and Kit Contents

Installing the drive wheel unit involves securing it to the wheel using the pre-drilled spoke clamping holes in the front cover and connecting it to the existing control unit. The E12093 kit includes the drive wheel unit itself, a pedestal bracket, three 16 mm and three 12 mm spoke clamping inserts, three spoke clamps, six M5 x 16 mm clamping screws, four #10 x 3/4 in support screws, 6 mm and 4 mm drill bits, a 3 mm Allen key, two ball joints, a tiller pin, three #8 x 3/4 in cheese-head screws, a stud, two nuts, two #8 x 3/4 in countersunk screws, a 4.5 m (15 ft) power cable, a cable clip and a #6 x 1/2 in screw, and a rudder angle sensor if originally included. An optional pedestal/bulkhead mounting kit (E15017) may be required depending on the setup.

Documentation

Type	Nom
	EN - Notice d'installation - Kit mise à jour de l’unité de puissance ST4000 à MKII

Expert opinion

Pol CONIN

Digital Manager

« ST4000 upgrade: performance and autopilot integration »

This Raymarine E12093 kit is a practical and cost-effective solution for navigators equipped with an ST4000 autopilot who want to upgrade to a more modern drive unit without replacing their entire system. By integrating the Mk II wheel drive, this kit enables a transition to a more responsive and potentially higher-performance tiller drive, aligned with Raymarine’s Evolution series standards.

Installation is manageable for a knowledgeable user. The instructions cover key steps such as securing the unit to the wheel spokes (using pre-drilled holes) and attaching the bracket (which may require drilling). It is critical to follow EMC installation guidelines to prevent interference, particularly by maintaining adequate clearance from radio transmission equipment. Compatibility with wheels featuring 3 to 8 spokes and steering systems with 1 to 3.5 turns lock-to-lock covers a wide range of cruising sailboats.

The practical value of this kit lies in its ability to revitalize an existing system. Rather than investing in a complete autopilot upgrade, this kit offers a targeted enhancement that optimizes cost-effectiveness for the user. It is particularly relevant for boats where the ST4000 controller remains functional and where the mechanical steering component is the limiting factor. However, it is essential to verify that the rest of the system (rudder sensor, compass) is in good working order to fully benefit from this update.

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ST4000 power unit upgrade kit to MKII

917,30€

917,30€ ~~978,00€~~

Frequently Asked Questions

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What is the Raymarine E12093 update kit?

The Raymarine E12093 update kit is designed to modernize existing ST4000 autopilot systems. It replaces the old power unit with a Mk II wheel drive, integrating Raymarine Evolution autopilot technology. This kit aims to improve the performance of the helm control unit and extend the lifespan of ST4000 systems.

Which types of wheels are compatible with the drive unit in this kit?

The drive unit supplied in this kit is compatible with spokes in 3, 4, 5, 6, 7 or 8 spokes.

What are the dimensions of the drive unit included in the E12093 kit?

The drive unit has a front cover diameter of 228 mm (9.0 in) and an overall diameter of 361 mm (14.2 in). Its height is 135 mm (5.3 in). The motor tube has a diameter of 48 mm (1.9 in) and a length of 171 mm (6.7 in), requiring an additional 60 mm (2.4 in) clearance for the cable.

Is this kit a complete replacement for the ST4000 autopilot system?

No, this kit is a targeted upgrade. It replaces the power unit with a Mk II wheel drive and integrates with the existing ST4000 autopilot controller, but does not constitute a complete system replacement.

Which components are included in the E12093 update kit?

The E12093 kit includes the following items:

The wheel drive unitA pedestal mountThree 16 mm spoke clamping insertsThree 12 mm spoke clamping insertsSix spoke clampsSix M5 x 16 mm clamping screwsFour #10 x ¾ in support screwsA 6 mm drill bitA 4 mm drill bitA 3 mm Allen keyTwo ball jointsOne tiller pinThree #8 x ¾ in socket head screwsOne studTwo nutsTwo #8 x ¾ in countersunk screwsA 4.5 m (15 ft) power cableOne cable clip and one #6 x ½ in screw

What are the main steps to install the drive unit?

Installing the drive unit involves four main steps:

Drilling the spoke clamping holes in the front cover.Attaching the drive unit to the wheel.Attaching the pedestal bracket.Connecting the drive to the existing control unit.

Is the drive unit compatible with all steering systems?

The unit is designed to operate with steering systems having between 1 and 3.5 turns lock-to-lock.

Should the cover be removed from the drive unit before installation?

Yes, the cover must be removed from the drive unit. The cover is held by three "push-fit" posts that insert into three sockets on the drive ring. To remove it, hold the motor with one hand and pull the cover upward and away from the drive unit.

How to identify the correct spoke holes for tightening on the front cover?

The spoke holes are numbered inside the cover. Position the cover arrow upwards and refer to the diagrams in the manual to identify the correct locations based on the number of spokes on your wheel (for example, for a 5-spoke wheel, drill the 4 holes marked '5'). It is recommended to mark the holes and check their alignment by placing the cover against your wheel.

Is it necessary to cut or modify the supplied cables?

Raymarine installation guidelines recommend using the cables specified by Raymarine. Cutting and reconnecting these cables can compromise EMC performance and should be avoided unless detailed in the installation manual.

Are there any precautions to take regarding the electrical power supply during installation?

Yes, it is crucial to ensure the electrical power is cut off before making any electrical connections for safety reasons.

Does the product require calibration after installation?

Yes, although the product is supplied with default settings, it is necessary to complete the commissioning procedures detailed in the "Commissioning" section of the relevant autopilot controller manual to ensure optimal performance on your boat.

Where should I register my Raymarine product for warranty?

To register your new Raymarine product, you can do so on the Raymarine website at www.raymarine.com/warranty.

What are the recommendations to avoid electromagnetic interference (EMC)?

For optimal EMC performance, Raymarine equipment and connected cables should be:

At least 1 meter (3 feet) away from any equipment transmitting or cables carrying radio signals (e.g., VHF radios, cables, and antennas). For SSB radios, this distance must be increased to 2 meters (7 feet).More than 2 meters (7 feet) from the path of a radar beam.Equipment should be powered by a separate battery from the one used for engine starting, to avoid voltage drops and starter transients that could cause equipment to reset.

What is the role of this kit in relation to Raymarine's Evolution technology?

This kit integrates Raymarine's Evolution autopilot technology into an existing ST4000 system by replacing the power unit with an Mk II wheel drive.

Is the E12093 kit compatible with other autopilot controllers than the ST4000?

The kit is specifically designed as an "ST4000 autopilot power unit upgrade kit to MKII" and integrates with the existing ST4000 autopilot controller. No compatibility with other controllers is mentioned.

What is the length of the power cable supplied with the kit?

The kit includes a power cable 4.5 metres (15 feet) long.

Is the kit supplied with the necessary tools for drilling?

Yes, the kit includes a 6 mm drill bit and a 4 mm drill bit, as well as a 3 mm Allen key, required for certain installation steps.

What is the function of the pedestal mount included in the kit?

The pedestal mount is a component included in the kit, essential for securing the drive unit to your boat's helm pedestal, ensuring a stable and secure installation.