I have a Raymarine ST40 Bidata with a through the hull sensor, will the sensor loose to much efficiency if I fibre glass it onto the inside of the hull. any ideas please.
Transducer is what your on about. Can be glassed to the hull but you need to make doubly sure that there are no air bubbles trapped under it.
The best way I've found of doing it is to glass in a tube, 4 inch waste pipe works well, then put the transducer in that and fill with castor oil.
That way you can remove it if needs be, whereas if you glass the thing direct to the hull. Its fixed there for good.Even if it goes wrong.
Yes fixing a tube to the inside of the hull works well, but intead of using a large dia I have used a pipe only 1/8" larger than the transducer and about 2" high. Also I was recommended to use a KY type jelly as a sounding fluid, it doesn't run as much as castor oil if you spill it. I am told that is what Doctors use for ultra sound scans now apparently. You carefully squeeze the jelly into the tube and gently lower the transducer into it. It can then be retained with tape, it is then easy to remove, should that be necessary.
Yeh I agree use a KY if your posh, Vaseline if your not -). Can't really see the need for a tube, just slap it on the jelly and tape it if required until your sure it is working ok then glass it in permanently.
Ian
<hr width=100% size=1>Play the best game you can with the cards you've been dealt ! ! !
Yes I epoixed mine to the hull and it works really well !
First do a temp fixing by using some of that white stuff for bath rooms and test it out ! The location that is there are places on the hull where you would get interfirence from props !
I have mine about midship !
Once you are happy with postion and reading just epoxy down !