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Can I use a NYLON Transducer in a WOOD Hull ???
"Jim Kelly" wrote in message ... Other than cost, is there any reason why you chose the plastic over the bronze? In your case, I understand that you have a wood hull and are concerned about stress cracking but I have never seen a good explanation on why you would use a bronze transducer over plastic on a fiberglass hull, yet bronze seems to be more popular. Gary Warner wrote: FROM THE INSTALLATION INSTRUCTIONS: - Plastic housing recommended for fiberglass or metal hulls only. NEVER install a plastic thru-hull sensor in a wood hull, since swelling of the wood may overstress the plastic causing a fracture. - Bronze housing recommended for fiberglass or wood hulls only. NEVER install a bronze housing in a metal hull, because electrolytic corrosion will occur. - Stainless steel housing recommended for metal hulls to prevent electrolytic corrosion. - NEVER install a metal housing in a vessel with a positive ground system. MY THOUGHTS: I'm pretty much a boating novice in many ways. When choosing between the bronze and nylon I tried to ask lots of questions here, to other knowledgable boating people, and do research on the net. I didn't find ANY reasons to use Bronze in my situation. My understanding after the research was that bronze would be better in situations where the transducer would have to be mounted on a steep angel portion of the hull and hence have much fairing-block around it. The bronze would be stronger in that situation. I got the general feeling that, of course, bronze is just "better" and that if money was no object...go bronze. (Unless you have steel/metal hull or a positive ground electrical system, then issues of electronic corrosion must be considered). In my case, it seemed nylon would be equally as good. I have a tendency to want to by "The Best" just for it's own sake. But the bronze was going to be around $115 where the Nylon was around $55. I could find no reason to pay twice the price. But, as I said, the instructions with the nylon say not to use in wood. Had I read that first, I probably would have pluncked down the $60 more for the bronze. And I still would do that if I felt it was a safety issue. But I do not believe the ply-wood is going to swell. I think I will make the hole just slightly bigger than need be so that any small swelling of the wood will not put pressuse on the transducer. I will - whether via glass or other method - make sure the transducer is in there VERY solidly. I do know that I don't want it coming out and leaving me with water pouring in. Gary |
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