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Old 22 April 2007, 15:58   #11
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I don't think the angle matters. Afterall if its over 5m deep what are you worried about and if its less, then 20 degrees of angle ain't going to make a big difference. Even when we are diving, the club one set on an angle rarely differs much to a depth gauge worn by a diver. Pressing it down into a big dollop of silicone sealant should mean you can level it up within reason. Just stick it in and don't worry.

Pete
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Old 22 April 2007, 19:08   #12
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Quote:
Originally Posted by Pete7 View Post
Just stick it in and don't worry.

Pete



I think i'm going to buy an in-hull transducer and play about with it ie. angles etc.

I'll report back on my findings!
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Old 10 October 2007, 21:03   #13
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http://cgi.ebay.com/ws/eBayISAPI.dll...MEWA:IT&ih=007

Hi guys,
Going to go ahead and order the above, Garmin website says it's compatable with the Fishfinder 240. Going to try and get to the bottom of the bilge (well, as close as possible) and mount this using normal bathroom clear (well, not the white stuff) silicone that dries kinda squidgy (But sticks well)

Will try to eliminate all air bubbles and ill give it a day to set/dry... I reckon it should work, any opinions? The bilge is flat so hopefully should get a decent reading
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Old 11 October 2007, 03:42   #14
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Garmin

We fitted a new Garmin Fishfinder at the weekend, I have fitted the transducer in the engine bay forward of the engine

We made a well out of blue tac right in the v of the hull so its flush then filled it with epoxy resin and sat the transducer in that, gave it a move about to clear the air bubbles and away you go. Very easy to fit.

Julian
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Old 11 October 2007, 10:52   #15
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Although plenty of people have suggested silicone sealant, Garmin actually recommend using epoxy to mount the transducer in-hull.

Nos - there's still in-hull types that use an oil bath as well.

Plenty of the manuals also indicate it's fine to use the transom mount type in-hull as well.

Before you go ahead and buy another one, why not just try using it with silicone in the hull anyway?
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Old 11 October 2007, 11:03   #16
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Mike, for the sake of $50 I don't want to go messing with seals etc. through the transom (Its on a sports cruiser, not a RIB) so i'm just going go leave the old transducer in place

Julian - What epoxy did you use?

Would something like fibreglass filler do the job? (Like P40... or is it P38... you know the stuff im on about!)
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Old 11 October 2007, 13:23   #17
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The problem with using epoxy/fiberglass is that if the transducer fails you will have to saw cut/grind it out with the potential of damaging the hull. Silicoln works fine and you can remove it with a knife. Suggest a good clean of the hull area to be bonded to. Finish up with a light wipe of acetone. Clean the transducer surfaces to be bonded DO NOT use acetone. Dispense silicone slowly to the area of the hull, do this in multiple stages starting with the perimeter. You have plenty of cure time. leave for at least 1 hour before sticking the transducer down. You can finish off with an additional bead around the tranducer.
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Old 11 October 2007, 13:30   #18
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I was going to just cut the bottom of a cylinder of silicone so that when I pour it out it will come out as one big lump, then press the transducer down. Then test it out and leave it overnight to cure. If it still works fine the next morning I was going to give it a very light layer of fibreglass filler to 'secure' it, but i'd still be able to snap the layer if I ever needed to remove/move it .... opinions?
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Old 11 October 2007, 13:40   #19
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Sounds Ok but make sure you do the surface prep. well and you will not need to add any FG filler etc.
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