Need advice please - sounder reading stuffed

[2DKnBJ]

G'Day Tony

The wet box i made for my Haines was pretty damn simple.I know there was a thread on here somewhere about a wet box and was a good set up but you think i could find it So i set about making my own and so far it has worked.

To start with i cut a hole in the floor to give access to the inside of hull.
Then i have used 110mm pvc with a screw top as the wet box.The pipe is cut to match the angle of the hull then mounted to the inside of the hull with sikaflex.Make sure you rough up the pipe with sandpaper otherwise it wont stick (trial and error)I have then mounted the trans to the screw top with a hole in the top for the cable to go through,when in place this can be sealed with sikaflex.I did a test run with the box filled with water.Once i was happy with everything i have removed water and filled with glycerine.Important not to have any air inside once sealed.
Will add a few pics.

Cheers Dazza

[2DKnBJ]

Another one

[2DKnBJ]

General idea

[seabug]

Looks a great idea.

But what happens if the hull develops a crack?

Would it sink the boat?

Regards
Seabug

[Tony_N]

OK Dazza - I get the idea thanks a lot for taking the time. Its early morning and I'm not thinking tooo sharply, but how do those two bolts work? Through the hull? Now thats a scary thought - or have you set up a wedge to hold a nut on the inside of the hull?
thanks again
Tony

[seabug]

Not knocking the idea ,it is good.
And perhaps I am mistaken in thinking that the round hole in floor is exposing the Flotation cavity.

But if this is the case would it be possible to use a short length of larger diameter pipe to seal the underfloor cavity.Meaning insert the larger pipe first to seal of the cavity ,and then put the sounder unit inside this sealed off area.
Regards
Seabug

[2DKnBJ]

Tony
The 2 bolts that you see only hold the transducer to the inside of the screw top.The only way the setup is fixed to the hull is with the sikaflex.

Seabug
The hole i have made gives me access to the bilge area in the very bottom of the hull.This area also has a few other drain holes that direct water off the deck into it.This hole is also covered with a screw in inspection hatch so this in itself should reseal the hull.

Cheers Dazza

[Tony_N]

Tony
The 2 bolts that you see only hold the transducer to the inside of the screw top.The only way the setup is fixed to the hull is with the sikaflex.

[smiley=blush.gif] That did occur to me later in the day - gotta stop responding to posts in the early morning or if I've had a couple of cleansing ales in the evening

thanks again for the info

Tony

[Tony_N]

Note to Moderator: cute gentle change to post title

Rang Taylor Marine today - as ever they were really helpful. (Must say the service from these people {the Qld agents for Furuno} has always been brilliant). Their first suggestion is to purge the system ie clear all memory and start again. I'd forgotten that this option was available. Anyway he said to try this and then get back to him. Great stuff. He also suggested that our habit of leaving the sounder on all day and starting the boat with the sounder switched on might leave the sounder susceptible to corrupt messages that might give the bodgey readings that we have been getting. Anyway will keep posting updates in case something like this happens to someone else.

cheers

Tony