Transducer Woes - SailNet Community
View Poll Results: What would you/should I do?
keep transducer as a backup, get a fiberblass plate made 1 33.33%
keep transducer as a backup, get a wooden plate made 0 0%
glass over the hull yourself 1 33.33%
pay the $300 to have one of those guys do it 0 0%
try to find someone under $300 0 0%
drill a hole in the other side of the boat to let the water out 1 33.33%
Multiple Choice Poll. Voters: 3. You may not vote on this poll

 
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post #1 of 3 Old 03-23-2012 Thread Starter
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Transducer/Thru-Hull Woes

I've been letting a little 'ole hole in the hull get on my back recently. The boat I recently purchased had a (functional?) thru-hull transducer mounted on a wooden fairing block that was rotted out and fell off with a couple pokes of the finger. It is 1" at one end and 1/4" at the other.



Any of you who knows me will know (for better or for worse) I spend a ton of time researching my questions on forums, which almost always leads to conflicting opinions.

I was under the impression that if I just made a new wooden fairing block, I would be taking a short cut and subject to lashings. So I looked into fiberglass but no one makes sheets 1" thick and I don't have the tools to cut it or create such a slope.

The next trend in my thinking was to just glass over the hole and use a in-hull transducer. Excellent. That is easy enough to rationalize, one less hole = good.

I received two quotes from local guys to do this fiberglass job (2" hole). $250-$300. Seems a little steep to me. I'm not entirely familiar with their workmanship either, one was mentioned on sailnet as being a local fiberglass person, the other was on the boat yard guy's phone list...



Seems a lot of people online are advocates for doing the job yourself. Doing a 12:1 taper and then laying up the glass in circles from largest to smallest. I have never done anything with fiberglass so as soon as people start mentioning different resins and fiber types I immediately begin to worry this is over my head or I'm otherwise going to choose something that is not optimal and I'll have a preventable weakness below the waterline.

In anticipation of needing an in-hull transducer and GPS, I bought a chartplotter, transducer, gps combo to save some money, so I don't need the transducer, though I suppose I keep it for a backup?

What would you do in my position?

Thanks so much!
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1975 27' O'Day "Ice Breaker"
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Last edited by maine89; 03-23-2012 at 09:20 PM.
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post #2 of 3 Old 03-23-2012
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Go to Jamestown Distributors in Bristol and get the materials. They may have a video on their website on how to do it.

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post #3 of 3 Old 03-23-2012 Thread Starter
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Re: Transducer Woes

Quote:
Originally Posted by jsaronson View Post
Go to Jamestown Distributors in Bristol and get the materials. They may have a video on their website on how to do it.
I've watched several video videos and read guides and understand the process but I'm still not sure if tapering a 12:1 around this hole below the water line is a good way to start my first fiberglass project.

I know after some practice I'll be more confident but the issue at hand in the hole below the waterline keeping me from splashing. Plenty of time for practice on less critical parts later.

1975 27' O'Day "Ice Breaker"
Heart is in Maine
Boat is in Rhode Island
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