Afishionado Posted June 21, 2005 Report Share Posted June 21, 2005 OK guys here is the problem........ My new Samurai (Warrior 165 hull) has a double skinned hull/deck set up. Nowhere is the actual hull skin 'get at able' from inside the boat. So to fit a transducer either one has to cut a hole in the floor skin and another in the hull skin. fit the transducer through the hull and then make good the access hole one cut in the floor. OR Make some sort of bracket to transom mount the transducer on the back end of the boat. My worry here is should the transducer head protude below the hull bottom to ensure good transmission of signal when motoring along? OR Is there another way I have not thought of? Advice on a Quote Link to comment Share on other sites More sharing options...
Sam Posted June 21, 2005 Report Share Posted June 21, 2005 dont the warriors have a bracket on the back just out the water. sam Quote Link to comment Share on other sites More sharing options...
Bob F Posted June 21, 2005 Report Share Posted June 21, 2005 Mike, The transducer is fitted to a special bracket that's mounted on the outer skin on the transom. It hinges up if the back of the boat hit the sea bottom, so preventing damage to the transducer. The transom mounted transducer is specially shaped to reduce air bubbles when travelling at speed, but you will still have difficulty getting a good picture of the bottom when the boat is moving fast. Not sure if a through-hull will be any better from that point of view. People do epoxy the transducers to the floor and get a signal without having to drill holes in the skins. You need to make sure there is no air bubbles in the epoxy and that you have positioned it at a point where there are no air gaps under the floor. Any air kills the signal. To try it out, you can stick it into a big blob of plastercine to see if the location is any good before permanently fixing it. In the sump of my Alaska there's a mounting block which has been put there for floor mounted transducers. But if a mounted a transducer here it would prevent the fuel tank from sitting in the sump. Mine works fine with the transom mounted bracket. BF Quote Link to comment Share on other sites More sharing options...
plaicemat Posted June 21, 2005 Report Share Posted June 21, 2005 On my Micro-plus, I mounted the transducer as shoot-thru-hull, i.e. fixed to the inside of the hull, and it worked fine. I used an empty plastic bottle to cut a collar that fitted around the transducer, placed the transducer in it and filled with araldite to cover the head. Move it around a bit to get rid of air bubbles and wait for it to dry. Obviously, being quite dense, this takes a little time. You will, of course, still have to cut the floor to access the inner hull. On my Warrior, I have used a transom mount transducer which is much easier to fit and this has proved equaly as effective. Hope this advise from one still learning is helpful. Quote Link to comment Share on other sites More sharing options...
Paul J Posted June 21, 2005 Report Share Posted June 21, 2005 Mike, transducers normally come with a paper template to position the bracket so you get the right level. Paul Quote Link to comment Share on other sites More sharing options...
Maverick Martin Posted June 21, 2005 Report Share Posted June 21, 2005 Mike Knowing your sounder (if its still the furuno) I would cut a hole in the inner skin then close the gap between the floor skin and the hull. Drill the appropriate hole through the hull and fit the tranducer as described in the sounders manual. You could fit the tranducer as Bob described but you would still need to cut the floor as your transducer will not send and receive through a void as they dont like air. The other alternative is to purchase a skimmer transducer. These fit on the transom in the clearest availble space where it wont be affected by air/water turbulance and a minimum of 350mm from the engine. Wherever you fit it it must have clear water with no turbulence or it will show up as fish/weed or clutter Martin Quote Link to comment Share on other sites More sharing options...
Afishionado Posted June 21, 2005 Author Report Share Posted June 21, 2005 dont the warriors have a bracket on the back just out the water. sam Funuro (that's the make of the fish finder) do a fancy transom bracket Sam. The trouble is that it costs a fortune. I am trying to find a less expensive way. I think I am going to follow Martins advice and go through the double skin and through mount in the outer hull. Mike Quote Link to comment Share on other sites More sharing options...
Paul D Posted June 21, 2005 Report Share Posted June 21, 2005 Mike, On the Orkney there is an access hole ( not sure of the proper technical term ! ) with a plastic lid - screws on - allowing access to the bilge ( ie. outer skin ). I presume your boat must have the same ( how else will you pump water from the bilge otherwise ? ) - why not try the transducer in a position accessible from the bilge hole ( or whatever it is called ) and then drill hole through the floor/outer skin to access the outer skin ? I use the transom mounted bracket - save drilling all them holes through your lovely new floor Quote Link to comment Share on other sites More sharing options...
Manic Moore Posted June 21, 2005 Report Share Posted June 21, 2005 Plaicemat, why does the glue take a long time to cure just because your dense? Quote Link to comment Share on other sites More sharing options...
Coddy Posted June 22, 2005 Report Share Posted June 22, 2005 dont the warriors have a bracket on the back just out the water. sam Funuro (that's the make of the fish finder) do a fancy transom bracket Sam. The trouble is that it costs a fortune. I am trying to find a less expensive way. I think I am going to follow Martins advice and go through the double skin and through mount in the outer hull. Mike Mike Why not fit the transducer in the well area at the back of the boat, where all the excess water drains into or where you keep the fuel tanks. I had one mounted there in my old Seahog and it worked fine, I used epoxy rather than silicone as it did not have any bubbles in it. Coddy Quote Link to comment Share on other sites More sharing options...
Afishionado Posted June 22, 2005 Author Report Share Posted June 22, 2005 Coddies crafty plan........ Why not fit the transducer in the well area at the back of the boat, where all the excess water drains into or where you keep the fuel tanks. I had one mounted there in my old Seahog and it worked fine, I used epoxy rather than silicone as it did not have any bubbles in it. Coddy Coddy great minds and all that That is where I was thinking of putting it, subject to a further check of the exact hull skin/ floor set up. Mike Quote Link to comment Share on other sites More sharing options...
Maverick Martin Posted June 22, 2005 Report Share Posted June 22, 2005 Mike The most important thing to remember when fitting your transdsucer is it needs clean water to function properly. So make sure there is nothing underwater forward of the proposed location that might cause turbulence Martin Quote Link to comment Share on other sites More sharing options...
Coddy Posted June 22, 2005 Report Share Posted June 22, 2005 As Martin said the trasnsducer needs to be covered in water to work at is best so make up a small tub/box, epoxy the t/ducer into tub/box, fix tub/box to lower skin, fill tub with water and fit a water tight lid with the wires sealed with silicon or grease. Make sure the transducer is level with the sea water otherwise you will not see straight down Job done Coddy Quote Link to comment Share on other sites More sharing options...
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