Linear drivesHydraulic and mechanical linear drives are available for sailboats. When attached to the quadrant or tiller they have direct control of the rudder and the effect of slack in cables and wires are avoided. For stern drive boats with power assisted steering Simrad offers a special linear drive with built in rudder feedback and several mounting kits. Model | MAX DISPL. kg(lb) | TILLER ARM mm (in.) | PWR CONSUMP. | H.O. TIME sec. (30% load) | MAX RUDDER TORQUE Nm (lb.in.) | PEAK THRUST kg (lb.) | MAX STROKE mm (in.) | Autopilot Computer | MOTOR VOLTS | NOTE 5 | NOTE 4 | NOTE 3 | DD15 | 10.500 (23.000) | 250 (9,8) | 1 - 4A | 8 | 1370 (12.000) | - | - | AC10 J3000X AC20 J300X NOTE2 | 12V NOTE 1 |
NOTES: 1. Except for the DD15 drive unit the motor voltage is transformed by the Autopilot computer when operating from 24V or 32V battery. 2. The specified Autopilot computer is necessary to achieve max drive unit capacity (Use of AC20 will increase the output current and maximum torque by 8 - 10%) 3. Recommended operational thurst or torque is 70% of listed value. 4. Typical average power consumption is 40% of listed maximum value.# 5. Length of tiller arm is based on +/-35% lock to lock. | 
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