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Hydraulic:
Bennett hydraulic actuator connections are made inside the boat with the mounting portion of the actuator providing a positive seal and strain relief. When properly installed this design eliminates the risks of leaks and water intrusion into the transom core.
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Electric:
Lenco's electrical wires are exposed outside the boat where they may be damaged. The wires from each actuator pass through a hole in the upper hinge and through the transom with no positive seal or strain relief. Without strain relief, any movement of the wire will break the seal, resulting in a leak as well as water intrusion into the core of the transom.
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Hydraulic:
Bennett utilizes an exclusive interlocking hinge that is not welded, does not have a pin to corrode, and does not allow water to pass through. This type of hinge is much stronger and durable than a welded piano hinge. Bennett's hinge design makes it more suitable for saltwater applications.
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Electric:
Lenco's tabs use piano hinges welded onto the trim planes. Welding stainless steel alters the properties of the metal, making it more susceptible to corrosion. The pin used in a piano hinge is also prone to corrosion. Additionally piano hinges allow water to squirt through the hinge creating mist behind the boat.
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Hydraulic:
Bennett Trim Tabs carry a flat surface out to the edge of the trim tabs. This maintains the highest pressure across the surface of the trim tab for maximum lift.
Up fins - On some trim tabs, Bennett turns the sides up 90 degrees to increase the stiffness of the tab.
Drop fins - On other trim tabs, Bennett bends the edges down 90 degrees to capture water that would normally escape out of the sides of the tabs and channels it aft.
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Electric:
Lenco Trim Tabs have the inboard and outboard edges of the trim tabs bent upwards at a shallow angle. This upward bend does not significantly contribute to the stiffness of the trim tab. Bending the edge of the trim tab up at a shallow angle creates low pressure along the edges of the trim tab. These areas of low pressure cause the water pressure in the middle of the trim plane to be pulled to the sides and lost out the edges, reducing the lift generated.
Drop fins are not available.
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Bennett Advantage:
On the key areas of trim tab design, Bennett has developed a system that is stronger, more durable and showcases the best in trim tab engineering. Shielded connections and non-welded hinges protect the trim tabs from damage. And with options such as drop fins and up fins, this hydraulic system can suit the needs of almost any hull.
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