Transom Transducer Installation; Mounting The Bracket - Humminbird Matrix 10 Install Manual

TRANSOM TRANSDUCER INSTALLATION

1.
Determine Transducer Mounting Location
NOTE: If transom mounting is not possible because of a stepped hull or cavitation noise, and you have
a single layer fiberglass hull, In-hull installation is an option. See Inside the Hull Transducer Installation
for more information.
First, determine the best location on the transom to install the transducer. Consider the following to find
the best location:
• It is very important to locate the transducer in an area which is relatively free of turbulent water. As
a boat moves through the water, turbulence is generated by the weight of the boat, and the thrust
of the propeller(s) - either clockwise or counter-clockwise. This turbulent water is normally confined
to areas immediately aft of ribs, strakes or rows of rivets on the bottom of the boat, and in the
immediate area of the propeller(s) (Figure 14). Clockwise propellers create more turbulence on the
port side. On outboard or inboard/outboard boats, it is best to locate the transducer at least 15"
(380 mm) to the side of the propeller(s).
• The best way to locate turbulence-free water is to view the transom while the boat is moving. This
method is recommended if maximum high-speed operation is a high priority. If this is not possible,
select a location on the transom where the hull forward of this location is smooth, flat and free of
protrusions or ribs.
• The hydrodynamic shape of your transducer allows it to point straight down without deadrise
adjustment (Figure 15).
• On boats with stepped hulls, it may be possible to mount the transducer on the step. Do not mount
the transducer on the transom behind a step to avoid popping the transducer out of the water at
higher speeds; the transducer must remain in the water for the control head to maintain the
sonar signal (Figure 16).
• If the transom is behind the propeller(s), it may be impossible to find an area clear from turbulence,
and a different mounting technique or transducer type should be considered (see Inside the Hull
Transducer Installation).
2.

Mounting the Bracket

1. Remove the transducer mounting template from this sheet.
NOTE: Please make sure that you use the correct drill holes for the hull composition of your boat.
2. Hold the template on the transom of the boat in the location where the transducer will be
installed (Figure 15). Align the template vertically, matching the lower edge of the transom with
the bottom corner of the template. If your propeller moves clockwise as the boat moves forward,
mount the transducer on the starboard side, and use the bottom left corner of the template. If your
propeller moves counter-clockwise as the boat moves forward, mount the transducer on the port
side, and use the bottom right corner of the template.
3. Using a pencil or punch, mark the two mounting holes (shown on the template for your type of
hull) on the transom. Do not mark or drill any other holes at this time.
4. Using a " (3.5 mm) bit, drill the two holes to a depth of approximately 1" (25 mm).
Support Plate
Figure 11
Figure 12
Firmly Press
Latch to
Remove
Unit
Figure 13
Figure 14
Use 5/32" drill bit
Drill Drill
INTERSECT THIS LINE DO NOT LET DEADRISE
ON DEADRISE ANGLE PLACE EITHER CORNER
Use 5/32" drill bit
Drill Drill
PLACE EITHER CORNER
ON DEADRISE ANGLE
Figure 15
Step
Figure 16
Toothed Lock
Washer
Pivot
Knuckle
Nyloc
Nut
Pivot Bolt
Transducer Arms
Figure 17