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Shield to block water spray from transducer

Old 02-02-2007, 11:53 AM
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Default Shield to block water spray from transducer

In order for me to get a consistent depth reading from my transom mount transducer, I must submerge it deeper in the water than the "text book" recommended level. This level of submersion causes a massive spray of water to shoot upwards into the starboard side of my 75 Etec. I do plan on correcting the problem, but until then I am wondering if my motor can tolerate that kind of treatment without ill effect. I don't mean the paint or finish, rather if certain components could be getting "more wet" then what is expected through normal operation.
I have a few ideas on fabricating some sort of shield to block the water spray, but would welcome any suggestions that you may have. When I do try adhereing something to my transom, is 4200 adequate or should I use 5200 (or something else)?
(16 foot aluminum custom (very pimp) semi-V flat boat with 75 HP Etec)
thanks
Old 02-02-2007, 12:01 PM
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Default Re: Shield to block water spray from transducer

Well If you want something kind of permanent then I would fashion a shield out of starboard and screw it one (I assume your boat transom does not have a core). Otherwise, You might get good results from doing a shoot through installation on the transducer.
Old 02-02-2007, 12:20 PM
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Default Re: Shield to block water spray from transducer

Take a piece of aluminum plate, about 4"x5"x1/16" thick. On the long side, bend 5/8" inch of the edge 90 degrees. Drill holes to match the holes on the transducer mount. Remove the transducer mount screws on the left side of the mount, (assuming you mounted the xducer on the starboard side). Place plate over the mount and replace the screws. You now have a shield that will deflect the spray and will not interfere with your transducer readings.
Old 02-02-2007, 02:40 PM
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Default Re: Shield to block water spray from transducer

Hooked - if you end up spending 50 bucks in gear to fix this , I suggest you go antohr 30 and just put the transducer insdie. See my post here:

http://www.thehulltruth.com/forums/t...134417&posts=8

it has several advantages:
never gets crud on it
does not spray anything
better looking - no wires exposed anywhere
seems to be a bit brighter picture for me
super easy inside the boat install
Old 02-03-2007, 04:51 AM
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Default Re: Shield to block water spray from transducer

Hooked1- PM Bailey Boat on this board. He has a very nice setup for his transducer as you are mentioning that you would like.
Old 02-03-2007, 02:43 PM
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Default RE: Shield to block water spray from transducer

Thanks for the "shoot thru" suggestions, but rembember this boat is aluminum. I've tried mounting it "shoot through" style but with unacceptable results.

As far as the shield that Cat O Lies described...it would be submerged if I install it on the bracket won't it? That won't cause any more extra turbulence or drag right (since it won't be "under" the hull like the ducer)? I was originally thinking that I needed to mount it higher up above the water line. Please confirm or refute this.

Any ideas where I can get the aluminum? I struck out at Lowes and Homedepot (unless I didn't look in the right place). I live in the New Orleans area.
Old 02-06-2007, 01:02 PM
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Default RE: Shield to block water spray from transducer

here is an illustration
http://www.thehulltruth.com/photos/s...&photoid=23899
Old 02-08-2007, 05:46 PM
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Default RE: Shield to block water spray from transducer

Sweet!!! How did you do that diagram?

Well, I built and mounted a shield (before seeing your photo), but I put it above the transducer horizontally (not vertically like your pic) with the shield extending further towards the motor and less of it towards the starboard side of the boat. I haven't tested it yet, but will post results.
thanks
Old 06-02-2015, 01:02 AM
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Default can you repost ?

Originally Posted by Cat O Lies View Post
I cannot find the sketch
would appreciate any help
Thanks
Dave (In Australia)

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