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 Capri 25 Specific Forum
 Depth Transducer		  New Topic  Topic Locked
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1981capri
Navigator

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USA
175 Posts
Initially Posted - 12/27/2007 :  12:38:52  Show Profile
Has anyone tried an in-hull depth transducer on a CP25? They say they work on solid fiberglass, but not on "cored hulls", meaning wood or foam core I assume. The Capri hull lamination uses the fiberglass coremat and is solid resin, but I don't know if it would affect the "shoot thru hull" transducer.
Edited by - 1981capri on 12/28/2007 17:00:30

GaryB
Master Marine Consultant

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USA
4304 Posts
Response Posted - 12/27/2007 :  15:30:08  Show Profile
Dan,

From what I've read and heard it does effect the readings if shooting through a cored hull, but then again, I haven't stayed in a Holiday Inn Express in a while. :):):)

GaryB
'89 SR/WK #5862
Kemah,TX
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Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts
Response Posted - 12/27/2007 :  15:45:25  Show Profile
I think Coremat (if that's the product you're referring to) has something like microspheres imbedded in it, so in effect it has thousands of little bubbles--probably not a good bet. The builder of my boat, which has one layer of Coremat but no other coring, said thru-hull transducers don't work well in their hulls.
Edited by - Dave Bristle on 12/27/2007 15:48:33
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chuck leonard
Deckhand

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Canada
15 Posts
Response Posted - 12/28/2007 :  11:53:50  Show Profile
I installed an in hull transducer in my capri 25. I just drilled a hole to the core and cleaned out the core. Then I filled it with west system epoxy and the transducer. It has been working fine for five years.
Chuck
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1981capri
Navigator

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USA
175 Posts
Response Posted - 12/28/2007 :  16:59:30  Show Profile
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">I just drilled a hole<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">

Chuck - Do you remember what size hole you needed to drill?
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chuck leonard
Deckhand

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Canada
15 Posts
Response Posted - 12/28/2007 :  20:01:46  Show Profile
Dan,
I am having some computer troubles so I hope this gets posted. The Standard Horizon depth sounder came with a transducer that was meant to be installed inside the boat. I used a holesaw with a short mandrel that was larger than the transducer to cut through the first layer of fibreglass and then cleaned out the foam until I reached the inside of the outer layer. Once I had the hole cleaned out and roughed up I mixed the epoxy being careful not to have any bubbles. I put about 1/4 inch of epoxy in the bottom of the hole and then placed the transducer in the hole. I used the west system just by itself without any silica or microballoons. I then filled the hole with the epoxy and it worked very well ever since. When I can get at my boat I can send you a picture if you want. It is beneficial to try to get the transducer as level as you can. I hope this helps.
Chuck
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.