Re: Sonar Sensor Location
Mac Davis (cgula@innet.com)
Tue, 10 Nov 1998 11:04:51 -0500
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West Wight Potter Website at URL
http://www.lesbois.com/wwpotter/
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Greetings, Tom, Eric et al:
There is a housing, available from marine supply houses, that is made of
plastic and designed to improve on the coffee can both structually and
performance-wise. I used one of my Cal 36 and it had the effect of reducing
the max depth performance of the depth sounder by about 10% - not a problem
to my mind. The instructions called for it to be filled with mineral oil
instead of water. The housing was made in two pieces. The part that was
epoxied to the hull was about 8" x 8" square and about 6 " deep. The other
piece was a lid with a hole thru which you installed the transducer - then a
whopping chunk of epoxy filled bronze. By using a tapered shim you could
mount the transducer vertically even though the hull was not horizontal.
Also, there was a plug for filling the closed assembly with mineral oil. It
should be noted that it won't work on a foam cored hull - again not a
problem.
Regards,
Mac
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>One method I've heard to test transducer placement and function is to take
a
>small coffee can and temporarily attach it to the inside of the hull using
>silicone. Fill it with water and drop the transducer in. This should allow
>the sonar signal to pass through the hull and into the water. If you like
>the results, remove the coffee can and silicone, dry the area, and epoxy
>the transducer to the hull. I used Marine-Tex. Don't apply the silicone to
>the coffee can until you're ready to try this on the water; it could be
>difficult to remove if you let it cure.
>
>--
>Eric L. Pederson
>P-19 #970, Necessity
>Bloomington, MN