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

Trim Tab Basics
This section is intended to provide a general overview of how trim tabs work.
For detailed information on operating your AutoTrim Pro, see page 32.
Bennett trim tabs most often attach to the bottom edge of the transom (although
other mounting variations are available). When the Helm Display is pressed,
the trim tabs move into position. Water-force on the trim tab creates 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. When operating your trim tabs
manually, the Helm Display 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. For information about operating ATP auto mode, see page 32.
Figure 1
Port Bow
Pitch Correction
Port
Tab
28 Bennett Marine AutoTrim Pro | Need help? Call (954) 427-1400
Stbd. Bow
Stbd.
Tab
inverse applies when lowering the stbd. tab independantly.
Lowers
Port
Bow
Raises
Port
Bow
Port
Tab
When the port tab is lowered independantly, an upward
force at the port stern of the boat is created. The
Lowers
Stbd.
Bow
Raises
Stbd.
Bow
Stbd.
Tab