Zero Torque Tiller steering system
Tiller steered boats are labor intensive to steer due to the constant load on
the tiller from propeller torque, and the fact that the operator is positioned
(while driving the boat) in such a way that maintaining control requires
physical effort not customary in everyday activities.
The higher torque of today’s four stroke engines has naturally increased the
load on the tiller as compared to two strokes. Though engine horsepower on
tiller steered boats may not have changed, the difficulty in controlling these
boats has increased. Having a system that locks out the torque while the boat is
not actively being steered, during fishing, is a desirable feature that has been
implemented on larger engines by engine manufacturers.
The solution is the ZERO TORQUE Tiller System which consists of a hydraulic
cylinder with a control valve that opens and closes following the operation made
on the handle. The valve closes when the steering effort by the driver is
stopped; as a consequence the cylinder locks the steering position.
HOW THE ZERO TORQUE SYSTEM WORKS:
• Suitable for boats up to 150 HP
• Hydraulic torque lockout
• Safer boat handling operations
• Consistent boat direction
• Fatigue reducer
• Includes Mercury® “BIG TILLER”
When the handle is operated it swivels around its pivot and moves the linkage
bar which will operate the valve.