Reply
 
Thread Tools Search this Thread
 
Old 13 December 2008, 03:56   #1
Member
 
Country: UK - England
Town: Towcester
Boat name: TBA
Make: Delta
Length: 6m +
Engine: Suzuki 175
Join Date: Nov 2002
Posts: 328
Leaky depth transducer

Hi
We have a depth transducer inserted within an oil filled hull attachment.
Gradually over a 3 month period the oil leaks out and depth reading cease.
The leak is around the top seal. I have tried vasaline on the seal ahead of re attachment.
Is ther anything less viscous that I can use, to replace the oil - which will work?
thnaks
Paul
__________________

__________________
Paul Beaurain is offline   Reply With Quote
Old 13 December 2008, 15:28   #2
Member
 
Country: UK - England
Town: Gloucestershire
Boat name: Osprey
Make: Osprey Vipermax
Length: 5m +
Engine: E-tec 300 G2
MMSI: TBC
Join Date: Dec 2006
Posts: 4,013
Thicker Oil
__________________

__________________
---------------------------------------------------
Chris Stevens

Born fiddler
Chris is offline   Reply With Quote
Old 13 December 2008, 15:29   #3
Member
 
Country: UK - England
Town: Gloucestershire
Boat name: Osprey
Make: Osprey Vipermax
Length: 5m +
Engine: E-tec 300 G2
MMSI: TBC
Join Date: Dec 2006
Posts: 4,013
Serioulsy though why not silicone the top on
__________________
---------------------------------------------------
Chris Stevens

Born fiddler
Chris is offline   Reply With Quote
Old 14 December 2008, 13:25   #4
Member
 
Pete7's Avatar
 
Country: UK - England
Town: Gosport
Boat name: April Lass
Make: Moody 31
Length: 9m +
Join Date: Aug 2001
Posts: 4,850
Is the o ring in the right place?

Pete
__________________
.
Ribnet is best viewed on a computer of some sort
Pete7 is offline   Reply With Quote
Old 14 December 2008, 14:39   #5
Member
 
Country: UK - England
Town: Towcester
Boat name: TBA
Make: Delta
Length: 6m +
Engine: Suzuki 175
Join Date: Nov 2002
Posts: 328
Can I fill with say vaselene or silicon?

Hi Chris
When you say put silicon around it, were you meening with the oil already in?
To get the device full of oil you end up overfilling the base and then when you insert the transducer the spare oil runs out just as you tighten it up.
With oil everyehere and no easy access putting a bead of silicon around it would be impracticle.
Pete 7 Hi yes the rubber o ring is integral with the 'lid'
at a refill rate of 3 or 4 times a year it only just on the 'todo' list.
Can I take out the oil and use anything else?
__________________
Paul Beaurain is offline   Reply With Quote
Old 14 December 2008, 15:18   #6
Member
 
Nasher's Avatar
 
Country: Other
Town: Principalite d'Chaos
Boat name: The Nashers Revenge!
Make: Ocean & Bombard
Length: 6m +
Engine: Suzi DT200EFI, DT9.9
MMSI: "Mmmmm SI" she said!
Join Date: Jan 2004
Posts: 4,147
Paul

Can't actually be of any real help, but I've wondered the same thing as I have a Raymarine/Airmar in hull transducer that I presume is very similar to yours.
I filled it with Mineral oil, and got the top on good and tight, however the oil does still appear to evaporate or leak out somehow.

In theory any oil should do, as long as the signal is transmitted to the hull rather than having a pocket of air under it.
I think the reason mineral oil is used is because it's so inert, and doesn't contain anything that will attack the transducer, but there must be something a little less viscous.

At one stage I thought about using some kind of two pack jelly to fill it that you pour in liquid and allow to set, but didn't know how to get hold of any Ballistics jelly, and couldn't think of anything else that wouldn't glue everything together solid, even if you did coat everything with a release agent before hand.

Nasher.
__________________
RIBBED For extra pleasure.
Member of the ebay Blue RIB cover club.
Member of the Bombard 380 Aerotec club
Nasher is offline   Reply With Quote
Old 14 December 2008, 16:09   #7
Member
 
Country: UK - England
Town: Poole
Boat name: Exodus
Make: Tohatsu
Length: 7m +
Engine: Evinrude 150
Join Date: May 2007
Posts: 275
If I remember rightly Airmar, the transducer manufacturer now recommends using a Propylene glycol filler rather than oil. Perhaps it stops or slows the evaporation rate?
The link here is the installation instructions for Nashers transducer, might be the same for others though

http://www.airmartechnology.com/uplo.../17-217-01.pdf
__________________
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former --- Albert Einstein
Into The Blue is offline   Reply With Quote
Old 14 December 2008, 22:43   #8
Member
 
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,653
If I recall correctly, many of the offshore fishing guys here glue the transducer to the hull using silicone sealant. Often they do this when mounting an external (transom mount) transducer in the hull.

You'd have to degrease all the surfaces prior to using the silicone, and make sure you don't get air bubbles when you glue the ducer in.

If you want to try it before committing, glue to a slightly different spot and see how it works.

jky
__________________
jyasaki is offline   Reply With Quote
Old 15 December 2008, 12:31   #9
Member
 
biffer's Avatar
 
Country: UK - England
Town: swanwick/hamble
Boat name: stormchaser
Make: custom rib
Length: 8m +
Engine: inboard/diesel
Join Date: Aug 2007
Posts: 3,848
have to make sure there are no air bubbles underneath as well, sorry you've already said that, cant use a mobile and read it seems
__________________
biffer is offline   Reply With Quote
Old 16 December 2008, 11:51   #10
Member
 
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,653
Quote:
Originally Posted by biffer View Post
have to make sure there are no air bubbles underneath as well, sorry you've already said that, cant use a mobile and read it seems

:d
__________________

__________________
jyasaki is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 08:21.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.