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Sand both the inside surface of the hull, where
the transducer is to be epoxied, and the face of
the transducer.
You may want to start with a rougher grit
sandpaper, such as 60 grit, and nish with a
smoother grit, such as 160 grit, sandpaper.
Sand the inside surface of the hull until it is
smooth to the touch.
The sanded area should be about 1-1/2 times
the diameter of the transducer. After sanding,
clean the hull and face of the transducer with
an alcohol wipe to remove any sandpaper grit
and dust.
Apply a thin layer of epoxy (about 1-16" or
1.5 mm) on the face of the transducer and the
sanded area on the hull. Make sure there are
no air pockets in the epoxy layers.
Press the transducer into the epoxy, twisting
and turning it to force any air bubbles out
from under the transducer face. Stop pressing
when it bottoms out on the hull.
Apply pressure to hold the transducer in place
while the epoxy sets. Be careful not to move
the transducer while the epoxy is setting.
Allow the epoxy to set before moving the
boat.
When nished, the face of the transducer
should be parallel with the hull with a
minimum amount of epoxy between the hull
and transducer.
On vee hulls try to place the transducer where
the deadrise is 10° or less.
Note: After the epoxy has set, route
the transducer cable to the sonar unit.
1: Sand
face of
transducer
and bottom
of hull.
2: Apply
epoxy to
face of
transducer
and bottom
of hull.
3: Epoxy transducer to hull.
Hull
Epoxy