In-Hull transducer

[RestlessL]

I am installing an in-hull depth transducer (Airmar P79). This has a tubular base which seals to the hull, and is filled with liquid to bridge the gap between transducer and hull.

Airmar recommend propylene glycol. A search shows a number of alternatives, including olive oil and "mineral oil" (which I think is another term for liquid paraffin).

Does anyone have any pointers as to what works best ? Or does it not really matter what I use ?

Thanks

John.

 

[Malcb]

The usual oil is castor oil, available from chemists.

 

[sarabande]

A cheap alternative is KY Jelly (which is propylene glycol, IIRC, with a bit of glucose.)

ahem....
(Just going down to lubricate the transducer, dear )

 

[samwise]

Agree on KY jelly. We have a Navman transducer installed in a plastic pipe ( didn't fancy drilling any more holes in the boat and the original Westerly fitment would be hard to get out) Anyway, the KY works very well and most importantly will not spill out as the boat bounces about in a seaway. The assistant in Boots gave me a funny look when I presented two tubes of the stuff at the counter and an even funnier look when I told her "It's for the boat."

 

[RestlessL]

Thanks for the replies. - KY Jelly it is.

Now I have got to find some way of disposing of the surplus /forums/images/graemlins/wink.gif

John

 

[JKay]

Stick it in your.................................






















pipe /forums/images/graemlins/grin.gif

cheers Joe

 

[ex-Gladys]

[ QUOTE ]
The assistant in Boots gave me a funny look when I presented two tubes of the stuff at the counter and an even funnier look when I told her "It's for the boat."

[/ QUOTE ]

Donkey's years ago first lady wife was into horses, and we had a mare in foal. The vet said to get loads of KY for the event... 10 tubes... cleared out the local chemist and get a very funny look too. It did take about a tube an arm though....