what oil?

[jeffro]

may have come ip before but i cant find it .A friend has a sealine and has just converted it to diesel and has removed all the skin fittings in the engine room {less holes he says} and now has glassed in a tube internally for his depth sounder tranducer anyway someone told him to put a special oil in the tube but didnt know what oil it was any ideas ta Jeffro

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[Becky]

Extra virgin olive oil?

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[Becky]

HWMBO says I shouldn't have said that. It should be silicon oil. /forums/images/icons/blush.gif

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[Anonymous]

>>HWMBO says I shouldn't have said that. It should be silicon oil.<<

Silicon chips fried in extra virgin olive oil, maybe?

I'm sure he meant silicone oil.

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[Talbot]

These tubes used to be filled with MINERAL oil. This works well, but is very messy if you get a leak! These days recommendation from SILVA (one of the few that make an in-hull kit) is that fresh water with some antifreeze will do just as well.

Some people advocate epoxy directly to the hull. This can make the epoxy depth rather toomuch and if you get bubbles inside the epoxy, will cause false readings.

You can really only mount inside the hull provided your hull is a solid construction GRP.

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[Guest]

Castor Oil

available from chemists ....... about 200 ml's is more than enough. A spare bottle etc. can last for years.

<hr width=100% size=1>Cheers Nigel ..... <A target="_blank" HREF=http://www.geocities.com/solentlifeuk/>http://www.geocities.com/solentlifeuk/</A>

 

[ccscott49]

Castor oil, or sikaflex it directly to the hull, making sure there are no bubbles in the sika. If you fibreglass the tube to the hull, make sure its vertical, ie 90 degrees to the water. same with the sika, prop it up, ntil the sika f]goes off. Some say silcon sealant is ok aswell.

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[tugboat]

It has always been recommended to use Castor Oil. Don't use anything that would be difficult to clean up in case of mishap.

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[oldharry]

Olive oil (whether wise or other) was what we used to use - and a filthy mess it made of the bilges too if it leaked! Modern tranducers can sit quite happily in water (with antifreeze to avoid problems during winter). One of the ways to check for the best position for the transducer is to build a plasticine or blue tack dam round the area you are considering bonding to, fill it with water and lay the transducer in it. One chap I know left it like that all season - worked perfectly, and he saw no significant improvement when he finally got round to bonding it in properly.

Humminbird suggest this technique for choosing a location for an in hull mounted sounder.

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[jeffro]

Thank you all a real minefield of information Merry xmas jeffro

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[VicS]

Re: Castor Oil

The transducer should be mounted in the tube so that it is only just clear of the hull so very little oil is actually needed. If a decent job has been made of bonding the tube it won't leak so 50 cc is plenty.

<hr width=100% size=1><font color=purple>Ne te confundant illegitimi.</font color=purple>