Bennett 129ATP Hydraulic Trim Tab Complete Kit with Auto Trim Pro
Trim Tab Sizing Guidelines
What size trim tab is right for me? Many factors affect the choice of properly sized trim tabs, and the
ultimate responsibility for selection is up to you, the boat owner. To help
you decide, Bennett Marine offers you a few guidelines below. If you still
have questions about the size you need, just contact us and we’ll be happy
to walk you through it.
General
Guidelines
These sizing recommendations are based on average performance. Your choice
may vary based on power, engine configuration, weight distribution, type of
boat, and use. The greater the surface area, angle of deflection and/or
speed of the water flowing under the trim tab, the greater the lift.
When making a choice between trim tab sizes, remember that the
largest trim tabs that will comfortably fit on the transom will be the most
efficient.
As a rule, choose at least one inch of trim tab span (per side) for every
foot of boat length. (Examples: 22-foot boat = no less than 24″ x 9″,
36-foot boat = no less than 36″ x 9″.
Span = side to side measurement Chord = fore to aft measurement
Whenever possible, choose a 9″ chord trim tab, and gain lift through a
longer span. The span of the trim tab has more of an effect on the amount of
lift. However, a longer chord can be used effectively, and there are
situations where you may need to use a 12″ chord. Click Here to See When to
Use a 12″ Chord
Measuring
Choose the approximate tab size for your boat using this sizing chart. Make
sure the tabs will fit your transom using the diagrams below as a guideline.
When measuring, disregard the strakes and follow the Vee of the hull.
The sizing guidelines below are intended to assist in the selection of
tab sizes for vessels that do not currently have tabs installed by the boat
manufacturer. For assistance with unique applications not outlined
below, please call us.
Boat Length
Trim Tab Size (span x chord)
15’-19’ (4.5-5.8 m)
8” x 10” (20 x 25 cm) M80
17’-19’ (5.2-5.8 m)
10” x 12” (25 x 30 cm) M120
19’-24’ (5.8-7.3 m)
12” x 9” (30 x 23 cm)
19’-24’ (5.8-7.3 m)
12” x 12” (30 x 30 cm)
20’-23’ (6.0-7.0 m)
18” x 9” (46 x 23 cm)
22’-27’ (6.7-8.3 m)
18” x 12” (46 x 30 cm)
22’-27’ (6.7-8.3 m)
24” x 9” (61 x 23 cm)
25’-31’ (7.6-9.1 m)
24” x 12” (61 x 30 cm)
25’-31’ (7.6-9.1 m)
30” x 9” (76 x 23 cm)
25’-31’ (7.6-9.1 m)
30” x 12” (76 x 30 cm)
32’-38’ (9.7-11.6 m)
36” x 9” (91 x 23 cm)
32’-38’ (9.7-11.6 m)
36” x 12” (91 x 30 cm)
36’-44’ (11.0-13.4 m)
42” x 9” (107 x 20 cm)
36’-44’ (11.0-13.4 m)
42” x 12” (107 x 30 cm)
42’-50’ (12.8-15.2 m)
54” x 9” (137 x 23 cm)
Why do I need Trim Tabs?
You may not be familiar with them, but you’ve probably experienced the
problems that trim tabs solve for boaters all over the world. After using
Bennett systems for years – and discovering just how durable and serviceable
they can be – our customers can’t imagine boating without them.
Do These Conditions Sound Familiar?
As
your boat slows from maximum speed, it begins to settle at the stern or
“squat,” creating an inefficient, untrimmed condition. At this attitude you
use more fuel to drive the boat.
As the boat pushes forward, it creates a “hill of water.” In this
bow-high position, visibility is limited and the hull bottom is pounded.
Also because of significant hull drag and extreme prop angle, fuel economy
is poor.
Uneven weight distribution makes your boat harder to handle, even harder
to get up on plane, and it causes your boat to list to one side. Your
passengers complain when you tell them to move from one side to the other.
As a boater you know that no two boating days are ever alike thanks to
ever-changing weight, weather and water conditions. Bennett Trim Tabs are
designed to adjust for these changing conditions and provide lift in order
to give you the best possible running attitude.
Get the Best Ride Possible
Bennett
Trim Tabs help your boat operate as intended over a broader range of
conditions. They give you more control than you ever had before. You can
improve the performance of your boat through properly sized trim tabs that:
Get you up on plane quickly
Allow you to plane at speeds lower than designed planing speed
Adjust the boat’s attitude for changes in speed, sea conditions and
shifting weight
Correct listing on either side of the boat
Bennett Trim Tabs reposition the boat’s bow to cut through the water.
This gives you several advantages:
Less drag and engine laboring, which translate into increased
performance, greater speed, and reduced fuel consumption
Reduced pounding, which means greater comfort
Greater visibility, which increases safety
Bennett Trim Tabs help your boat operate as intended over a broader range
of conditions. They give you more control than you ever had before. You can
improve the performance of your boat through properly sized trim tabs that:
Get you up on plane quickly
Allow you to plane at speeds lower than designed planing speed
Adjust the boat’s attitude for changes in speed, sea conditions and
shifting weight
Correct listing on either side of the boat
Bennett Trim Tabs reposition the boat’s bow to cut through the water.
This gives you several advantages:
Less drag and engine laboring, which translate into increased
performance, greater speed, and reduced fuel consumption
Reduced pounding, which means greater comfort
Greater visibility, which increases safety
Did We Mention Savings on Fuel?
Maintaining plane at a lower RPM is where the boat starts to achieve its
maximum efficiency. Trim tabs provide the additional lift so that the
throttle can be decreased without losing plane, adding both fuel economy and
range. Some boaters have experienced as much as 30% fuel efficiency gains.
With all the advantages and efficiencies created, Bennett Trim Tabs
virtually pay for themselves.
The Bennett Advantage
Performance:
Turn a teeth-jarring experience into a more comfortable ride.
Increase Speed
Reduce Pounding
Correct for Listing
Eliminate Porpoising
Offset Prop Torque
Efficiency:
Bennett Trim Tabs are one of the few boat accessories that can pay for
themselves. Some boaters have experienced as much as 30% fuel efficiency
gains.
Reduce Fuel Consumption
Reduce Engine Laboring
Eliminate Squatting
Reduce Engine Laboring
Safety:
Relax at the wheel thanks to greater control over your bow high position.
Improve Visibility
Reduce Wake
Improve Handling
Reduce Hull Stress
129ATP Hydraulic Trim Tab Complete Kit with Auto Trim
Pro
Hydraulic trim tabs are known for power, precision and durability. Get the
most from your boat, no matter what the load, speed or sea conditions. Using the
helm control, you can adjust the tabs individually or in unison to create the
perfect cruising attitude. Increase speed and fuel economy, smooth a rough ride
and get on plane faster.
Kits Include:
(2) Trim plane assemblies
(2-4) Hydraulic actuators
(1) Hydraulic Power Unit
Hydraulic tubing and hardware
helm control
Features:
Get on plane fast and stay on plane at intermediate speeds
Correct listing and uneven loads
Improve visibility and safety
Reduce pounding and eliminate porpoising
Low maintenance, long-term value and ease of service
Exclusive transom mount interlocking tab design
Sport batwing option (M80/M120) provides 30% more lift
Bottom and piano hinge mounts are available for custom order
Introducing the new AutoTrim Pro for Electronic & Hydraulic Systems
AutoTrim Pro is an all-in-one trim tab control system designed for boats of
all sizes–packing in a boatload of essential features into an easy-to-use,
space-saving keypad.
How it Works
AutoTrim Pro automatically levels the pitch and roll of your boat, adjusting
your trim tabs to changes in vessel speed, sea conditions and shifting weight.
Enjoy the convenience of riding in auto mode, or shift to full manual mode
anytime.
Ready to run more efficiently?
Smart Features for a Smoother Ride
Auto Trim Tab Control automatically
reduces bow rise and corrects listing.
Manual Tab Control puts you back in manual control at the
touch of a button.
Trim Tab Position Indication alerts you to the position
and activity of the trim tabs.
“All Up” and “All Down” Buttons allow for one-touch
manual adjustments.
Automatic Tab Retraction protects tabs during storage
and trailering.
OEM Customizable Response Time enables boat
builders to pre-configure reaction time.
The Convenience of Compatibility
Whether you have electric or hydraulic tabs, AutoTrim Pro can be added to all
existing Bennett systems (with minor modifications in some applications), and
most others as well. AutoTrim Pro is both 12 & 24 Volt capable
Installation at Your Fingertips
Download our Installation & User’s Guide for instruction on how to set up
your new ATP system. If you need further assistance with installation, we’re
just a phone call away.
The Ease of Plug and Play
With plug and play waterproof snap-on connectors, assembly is easy and
straightforward. Simply connect the helm display and the control unit.
Introducing the new AutoTrim Pro for Electronic & Hydraulic Systems
AutoTrim Pro is an all-in-one trim tab control system designed for boats of
all sizes–packing in a boatload of essential features into an easy-to-use,
space-saving keypad.
How it Works
AutoTrim Pro automatically levels the pitch and roll of your boat, adjusting
your trim tabs to changes in vessel speed, sea conditions and shifting weight.
Enjoy the convenience of riding in auto mode, or shift to full manual mode
anytime.
Ready to run more efficiently?
Smart Features for a Smoother Ride
Auto Trim Tab Control automatically
reduces bow rise and corrects listing.
Manual Tab Control puts you back in manual control at the
touch of a button.
Trim Tab Position Indication alerts you to the position
and activity of the trim tabs.
“All Up” and “All Down” Buttons allow for one-touch
manual adjustments.
Automatic Tab Retraction protects tabs during storage
and trailering.
OEM Customizable Response Time enables boat
builders to pre-configure reaction time.
The Convenience of Compatibility
Whether you have electric or hydraulic tabs, AutoTrim Pro can be added to all
existing Bennett systems (with minor modifications in some applications), and
most others as well. AutoTrim Pro is both 12 & 24 Volt capable
Installation at Your Fingertips
Download our Installation & User’s Guide for instruction on how to set up
your new ATP system. If you need further assistance with installation, we’re
just a phone call away.
The Ease of Plug and Play
With plug and play waterproof snap-on connectors, assembly is easy and
straightforward. Simply connect the helm display and the control unit.
**The price is subject to change at anytime without any notice. We
are not responsible for any typographical errors. Any products can be
cancelled from sale at any time.
** All Products sold here are Brand New unless specified
Otherwise and come with Full Manufacturer's Warranty
WARNING:
This product can expose you to chemicals including Di-n-hexyl Phthalate (DnHP)
which is known to the State of California to cause reproductive harm, and
Vinyl Chloride which is known to the State of California to cause cancer. For
more information go to P65Warnings.ca.gov.
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