in hull depth transducer- help needed

E

eastmed

Member
Joined
24 Jul 2003
Messages
23
Location
med
Visit site
my trough hull transducer stops working after a ligthning storm. I consider buying an in hull transducer to avoid the cost of lifting as the boat is afloat now in the med with new antifouling.
Any advise will be welcomed.
Thanks
 
You could purchase a new through-hull transducer, with the intention of fitting it properly at next lift out. But for now, mount it inside the hull in a tube of oil (easier than it sounds!)
 
As suggested you could fix a tube to the inside of the hull and fill it with oil.

I just bonded my transducer to the inside of the hull with a generous dollop of epoxy. Works well down to at least 50m. I sail on the North Sea so depths never more than that.
 
I fitted a garmin fishfinder transducer in a tube of fresh water and never had any trouble with it in a small grp boat. The transducer supplied was one of the transom fit type so needed a bigger tube than the round type transducer. It is important to test the location of the transducer first before going fo the permnanent fix.
 
You could just buy an Airmar P79 (about £80). They do various versions to suit different make sounders. Any decent chandler should be able to get one, or buy online at www.jgtech.co.uk . I have one connected to my Raymarine S60 instrument. Very easy to fit. Just need to get hold of a small quantity of castor oil.

Jerry
 
Why not just replace the transducer with the boat in the water? Lots of people lift theirs out regularly to clean the paddlewheel - just make sure you have a blanking plate or appropriate wooden bung in case there's a glitch.

- Nick
 
I have a through hull transducer and i stuck to the inside of the hull with silicone sealer! works great and many freinds have also done this with no problem's.
Just make shure you dont get any air bubbles.
won't cost much to try?
 
You can use a piece of plastic pipe with an inside diameter slightly larger than the width of the transducer head. Cut a length somewhat longer than the transducer. Shape one end so it sits vertically on the bottom of the hull in the chosen location. Seal it to the hull with Plastic Padding or some such filler. Put enough oil in so that the head of the transducer will be covered. Insert the transducer and find a way of holding it in place so that the head is just clear of the hull.

The advantage of doing it this way rather than just sticking the transducer to the hull is that it can be easily withdrawn and you wont get problems with air bubbles. Also these transducers are directional and should be located vertically for best performance.
 
Mine is just stuck to the inside of the hull with a big lump of Blu Tack. You can move it around to find the best place. I had intended to do something more permanent but it still works after 5 years and reads to better than 200ft so not inclined to change.
 
I fitted our Navman through hull transducer in a length of plastic pipe from the plumbing department of BQ. Pipe bonded to hull with Plasic Padding. The unit needs some kind of liquid to enable it to transmit properly, my liquid of choice is KY jelly, available from your friendly chemist. It does a brilliant job and doesn't slop around like oil or more fluid fluids. l
 
You must log in or register to reply here.

Share this page

Top