Empathy List Archives

N

Nunas@pacific.net.sg

Fri, Mar 16, 2001 2:29 AM

We are considering buying one of those combined GPS / chartplotter / fish
finders. We see that most come with transom mount transducers or none at
all. Through hull transducers seem to be an option.

Transom mount transducers appeal to us, as we would not have to pull the
boat out of the water to install one. Also, the transom is a long way from
the location of the existing through-hull and we believe that this would
minimize interference between the fish finder transducer and the depth
sounder transducer.

But, how well do transom mount transducers work on trawlers, more
specifically on Krogens, more specifically still, on Whalebacks?

Thanks!
Maurice & Louise-Ann Nunas
M/V AKAMA
Pier 2, Ponggol Marina
Singapore

We are considering buying one of those combined GPS / chartplotter / fish finders. We see that most come with transom mount transducers or none at all. Through hull transducers seem to be an option. Transom mount transducers appeal to us, as we would not have to pull the boat out of the water to install one. Also, the transom is a long way from the location of the existing through-hull and we believe that this would minimize interference between the fish finder transducer and the depth sounder transducer. But, how well do transom mount transducers work on trawlers, more specifically on Krogens, more specifically still, on Whalebacks? Thanks! Maurice & Louise-Ann Nunas M/V AKAMA Pier 2, Ponggol Marina Singapore

M

michaelg@seadreamer.net

Sat, Mar 17, 2001 5:35 AM

But, how well do transom mount transducers work on trawlers, more
specifically on Krogens, more specifically still, on Whalebacks?

Thanks!
Maurice & Louise-Ann Nunas
M/V AKAMA
Pier 2, Ponggol Marina
Singapore

Not too long ago a friend gave me a very nice fishfinder type depth
sounder. I will not be hauling out for at least another year so I decided
to mount it inside the hull. I located a spot away from too many through
hull fittings and sanded off the paint to get bare fiberglass. I then
constructed a three sided dam out of cardboard, tin foil, and plumbers
putty. As I had some "Git Rot" I used it, I just mixed it and poured it
into the dam. It leveled itself as it set. When it was set I removed the
dam, and sanded the top smooth. The transducer I glued down with silicon
rubber in case it didn't work and I had to remove it. It has worked
fine. I haven't been out in deep water since I did it but so far it works
fine down to around 75 feet on the minimum sensitivity setting. Since it
seems to work I will re-glue it with epoxy... someday... real soon now....

Where did I put that round tuit...

--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--
Michael Gibbons
http://www.seadreamer.net
40' Marine Trader
"Sea Dreamer"
--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--

>But, how well do transom mount transducers work on trawlers, more >specifically on Krogens, more specifically still, on Whalebacks? > >Thanks! >Maurice & Louise-Ann Nunas >M/V AKAMA >Pier 2, Ponggol Marina >Singapore Not too long ago a friend gave me a very nice fishfinder type depth sounder. I will not be hauling out for at least another year so I decided to mount it inside the hull. I located a spot away from too many through hull fittings and sanded off the paint to get bare fiberglass. I then constructed a three sided dam out of cardboard, tin foil, and plumbers putty. As I had some "Git Rot" I used it, I just mixed it and poured it into the dam. It leveled itself as it set. When it was set I removed the dam, and sanded the top smooth. The transducer I glued down with silicon rubber in case it didn't work and I had to remove it. It has worked fine. I haven't been out in deep water since I did it but so far it works fine down to around 75 feet on the minimum sensitivity setting. Since it seems to work I will re-glue it with epoxy... someday... real soon now.... Where did I put that round tuit... --|--|--|--|--|--|--|--|--|--|--|--|--|--|--|-- Michael Gibbons http://www.seadreamer.net 40' Marine Trader "Sea Dreamer" --|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--

M

michaelg@seadreamer.net

Sat, Mar 17, 2001 5:48 AM

Not too long ago a friend gave me a very nice fishfinder type depth
sounder. I will not be hauling out for at least another year so I decided
to mount it inside the hull. I located a spot away from too many through
hull fittings and sanded off the paint to get bare fiberglass. I then
constructed a three sided dam out of cardboard, tin foil, and plumbers
putty. As I had some "Git Rot" I used it, I just mixed it and poured it
into the dam. It leveled itself as it set. When it was set I removed the
dam, and sanded the top smooth. The transducer I glued down with silicon
rubber in case it didn't work and I had to remove it. It has worked
fine. I haven't been out in deep water since I did it but so far it works
fine down to around 75 feet on the minimum sensitivity setting. Since it
seems to work I will re-glue it with epoxy... someday... real soon now....

Where did I put that round tuit...

--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--
Michael Gibbons
http://www.seadreamer.net
40' Marine Trader
"Sea Dreamer"
--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--

A quick add-on to the above. The face of the transducer and the top of the
resin mount have to meet exactly, sand one or both as needed. When gluing
make sure there are no air bubbles present. I should mention that I used
"Git Rot" because it is very thin and you can pour it without getting air
bubbles in it.

I will also point out that the only cost is for the resin and there is
nothing to leak or that needs toping up occasionally.

Michael

> >Not too long ago a friend gave me a very nice fishfinder type depth >sounder. I will not be hauling out for at least another year so I decided >to mount it inside the hull. I located a spot away from too many through >hull fittings and sanded off the paint to get bare fiberglass. I then >constructed a three sided dam out of cardboard, tin foil, and plumbers >putty. As I had some "Git Rot" I used it, I just mixed it and poured it >into the dam. It leveled itself as it set. When it was set I removed the >dam, and sanded the top smooth. The transducer I glued down with silicon >rubber in case it didn't work and I had to remove it. It has worked >fine. I haven't been out in deep water since I did it but so far it works >fine down to around 75 feet on the minimum sensitivity setting. Since it >seems to work I will re-glue it with epoxy... someday... real soon now.... > >Where did I put that round tuit... > >--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|-- > Michael Gibbons >http://www.seadreamer.net > 40' Marine Trader > "Sea Dreamer" >--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|-- A quick add-on to the above. The face of the transducer and the top of the resin mount have to meet exactly, sand one or both as needed. When gluing make sure there are no air bubbles present. I should mention that I used "Git Rot" because it is very thin and you can pour it without getting air bubbles in it. I will also point out that the only cost is for the resin and there is nothing to leak or that needs toping up occasionally. Michael

S

scaramouche@tvo.org

Sat, Mar 17, 2001 1:28 PM

michaelg@seadreamer.net writes:

Since it
seems to work I will re-glue it with epoxy... someday... real soon
now....

Why bother? I used GE Silicone II direct to the hull for my
transducer at least four years ago. Just keeps ducing and ducing or
it that transing ... :-)

michaelg@seadreamer.net writes: > Since it >seems to work I will re-glue it with epoxy... someday... real soon >now.... Why bother? I used GE Silicone II direct to the hull for my transducer at least four years ago. Just keeps ducing and ducing or it that transing ... :-)

trawlers@lists.trawlering.com

TWL: Transom Mount vs Through Hull Transducers