Transducer

[mflood]

I have a 1992 four winns 190 H. I want to install my fishfinder but would like to avoid drilling a hole in the stern. I've seen you can mount the transducer as a shoot through hull if there is no core and if the hull is less than 1/2 inch. I'm having difficulty determining how thick the hull in the bottom of the boat is to know if this would work on my boat. Does anyone know wether a shoot through hull mount would work?

 

[gm280]

mflood, very good question you asked. I have used a lot of depth finders and such, but never used one that the transducer shot through the hull. I see some use them with great results and like them. Then I hear others talk about it reduces the capability. I can't confirm or deny either claim myself. I would think that having to shot through fiberglass and resin would reduce some capability, I can't say it would seriously matter if you're not working at the max limits to start with though. Others will chime in here and offer their experiences, but I would certain think about such a set up if not wanting to drill holes in your transom... JMHO!

 

[JASinIL2006]

If you're really worried about holes in the transom, you could always use something like this: http://www.sternmate.com/

I know of at least one iboats member who used this and was happy with it.

 

[Watermann]

:welcome: to the iboats forum mflood!

I can see the aversion to putting a few holes in the transom and this topic comes up constantly. Although I would like to take this opportunity to voice my opinion on the subject and give it some perspective. If you have a IO there's a massive hole cut in the transom. An OB has a bunch of 1/2" holes bored through. Next comes the speedo pitot mount, livewell intake 1" hole, bilge drain hole, clam shells for the cable/tubes to pass through, kicker motor mount, trim tabs and some even have a fuel tank vent back there.

Then comes along the ominous transducer and it's 2 x 3/16" holes everyone is fearful of adding.

Now to your question. The through the hull puck you'll need to have access to the inside bottom of the hull, grind the glass back clean apply the epoxy and set the transducer puck. Then hope you have NO air bubbles between the puck and the water in the glass or epoxy.