How Trim Tabs Work - Bennett Marine BOLT129 Installation & User Manual

How Trim Tabs Work

Bennett trim tabs most often attach to the bottom edge of the transom (although
other mounting variations are available). When the helm control is pressed,
the trim tabs move up or down. Water-force on the trim tab creates an upward
pressure, raising the stern and lowering the bow. Properly sized trim tabs improve
the performance of your boat in a wide range of weight, weather and water
conditions.
In general, trim tabs operate in reverse of what you may think (Figure 1). The port
(left) trim tab controls the starboard (right) bow. Conversely, the starboard (right)
trim tab controls the port (left) bow. The helm control is wired so that all you have
to do is press the control in the direction you want the bow to move. Don't worry
about which trim tab is moving. The proper use of Bennett Trim Tabs becomes
second nature after a short time.
Port Bow
Pitch Correction
Port
Tab
6
Figure 1
Stbd. Bow
LEDs indicate
position of tabs
Stbd.
Tab
inverse applies when lowering the stbd. tab individually.
Bennett Marine | Bolt Electric Trim Tab System
Lowers
Port
Bow
PORT
Raises
Port
Bow
Port
Tab
When the port tab is lowered individually, an upward
force at the port stern of the boat is created. The
STBD
DOWN DOWN
UP UP
Controls the brightness of
the helm display LEDS
Lowers
Starboard
Bow
Raises
Starboard
Bow
Stbd.
Tab