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Raymarine Type 2 Long Linear Drive Unit - 24V (M81134)
Take command of your sailing vessel with the Raymarine Type 2 Long Linear Drive Unit M81134, the industry's most trusted mechanical linear drive for boats up to 44,000 pounds. This professional-grade autopilot drive unit delivers exceptional steering control, combining powerful 1,050-pound thrust with whisper-quiet operation for confident navigation in any conditions.
Superior Performance for Serious Sailors
Engineered for sailing vessels up to 20,000kg displacement, this 24V linear drive system provides lightning-fast 14-second hard-over-to-hard-over response times while maintaining precise rudder control. The electromagnetic fail-safe clutch ensures smooth hand-steering when the autopilot disengages, giving you complete confidence whether under automatic or manual control.
Professional Marine Installation
Designed for below-deck mounting, the M81134 connects directly to your rudder stock via an independent tiller arm or rudder quadrant. The robust construction features a high-tensile belt drive and epicyclic gearbox system that delivers reliable performance season after season.
Technical Specifications
- Compatibility: ACU-400 Autopilot Control Unit
- Drive Type: Type 2 Long Mechanical Linear
- Input Voltage: 24 Volt DC
- Maximum Stroke Length: 400mm (16 inches)
- Peak Thrust: 480kg (1,050 pounds)
- Maximum Boat Displacement: 20,000kg (44,000 lbs)
- Hard-Over Time: 14 seconds
- Maximum Rudder Torque: 1,660 Nm (14,700 lb.in)
- Power Consumption: 48-72 watts
Key Features & Benefits
- Powerful Thrust Control: 1,050-pound maximum thrust handles large sailing vessels with authority
- Quiet Operation: Engineered for minimal noise during operation, preserving onboard comfort
- Fast Response: 14-second hard-over times provide responsive steering control
- Electromagnetic Clutch: Fail-safe design allows immediate manual override when needed
- Professional Integration: Direct connection to rudder system via tiller arm or quadrant
- Proven Reliability: Raymarine's most commonly used drive type for sailing applications
- Easy Installation: Below-deck mounting with structural member attachment points
Installation Requirements
The M81134 requires connection to your boat's rudder stock through an independent tiller arm. Your steering system must allow back-driving from the rudder position. Accessory fittings from your steering manufacturer may be required for optimal integration.
Warranty & Support
Backed by Raymarine's comprehensive 2-year limited warranty, this drive unit represents a long-term investment in your vessel's navigation capabilities.
Frequently Asked Questions
What size boats can use the Raymarine Type 2 Long Linear Drive?
The M81134 is designed for sailing vessels up to 20,000kg (44,000 lbs) displacement. This makes it ideal for mid to large-sized sailboats requiring robust autopilot steering control.
What autopilot control unit is compatible with this drive?
The Type 2 Long Linear Drive M81134 is specifically designed for use with the ACU-400 Autopilot Control Unit, ensuring seamless integration with Raymarine's Evolution autopilot systems.
Can I still steer manually when the autopilot is installed?
Yes, the electromagnetic fail-safe clutch allows smooth manual steering when the autopilot is disengaged. The system is designed with low backdrive force to minimize interference with manual steering.
Where is the linear drive unit mounted on the boat?
The M81134 is mounted below deck, with the fixed end secured to the boat's structural members and the dynamic end attached to the rudder stock or quadrant via an independent tiller arm.
What is the power consumption of this drive unit?
The Type 2 Long Linear Drive consumes 48-72 watts during operation, making it an efficient choice for extended cruising while maintaining powerful steering control.
Is professional installation required?
While designed for easier installation, professional installation by a certified marine technician is recommended to ensure proper integration with your steering system and compliance with ABYC standards.
