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Old 17 May 2004, 11:34   #1
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mount fishfinder sensors in the hull.

Hi,

Can anyone - with pictures please, post how to do this with crappy Garmin sensors!!!

The sensor at the back on my boat works fine until I starting bouncing a bit!! It is just not rigid enough so if possible I'd like to mount itside the boat.
Will it still work even when the boat is bouncing from wave to wave?


Pete
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Old 17 May 2004, 12:31   #2
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Having just been throught his nightmare and do you mean for it to look through the hull or are you going to cut a hole and have it in the water?
Check here for the replies that I got...it may help.
Just to update I ended up machining a new collet to go from 61mm Od to 50mm Id and touch wood its not leaking!!!
Andy
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Old 17 May 2004, 12:59   #3
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Sensor placement

I mean for it to 'look through the hull'.

my little tub has enough problems without drilling holes in the bottom!!

Thats for the Avon boys (Phil D)

Pete
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Old 17 May 2004, 13:33   #4
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I have been considering the same thing with my Garbage, sorry Garmin
Anybody tried the Airmar P79 or the P319 and had good results?
The P79 is shoot thru and the P319 is thru hull. I reckon the P79 might fit well on the side of my well at the transom but it seems to be hard to get in the UK and even then only with a 1m cable. I want at least 4-5m so that there are no joins lying in wet bits to corrode
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Old 17 May 2004, 14:41   #5
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My garmin 100 f/f works fine sikoflexed(bathroom sealant) into the hull,34 knots plus it will sometimes lose a signal and occasionally in water with a lot of sediment,the humber has a flat keel anyway at the stern but my previous ribcraft worked similarly,sorry no pics as digital camera is broke.
It is sikoflexed into the rear well inside the shell of the boat alongside the bilge pump.
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Old 17 May 2004, 18:42   #6
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Is yours right in the middle of the well?
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Old 17 May 2004, 19:06   #7
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Anyone taken a garmin sounder head apart ? got a feeling that the stern mounted one has an outer shaped plastic moulding and the real sensor sits inside this with water filling the gap when you launch it. If so, then it might be worth smashing one apart.

Okay I will/might have a go because I cut my cable atempting to route it through the hull only to find 5 wires that are sheathed in ali foil and can't be bothered to try and solder it together. It might end up going to Daniel with a crate of the Amber liquid to be sorted.

Pete
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Old 18 May 2004, 01:43   #8
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Quote:
Originally Posted by Rupert Bear
Is yours right in the middle of the well?
Slightly to one side but still on the flat area-on the previous boat,it was dead central so as to "look" straight down.Installing was a big blob of sealant then work the sender into it so as to eliminate air bubbles,sticks quite well but I was able to remove from the previous boat without damage.
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Old 18 May 2004, 03:21   #9
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Have a look at another thread, bit more info.

http://rib.net/forum/showthread.php?...ansducer+epoxy
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Old 18 May 2004, 04:00   #10
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I wasnt going to tell but.....

When I tried my Raymarine Transducer (which incidently is made by airman) I sat it in some water and tried it as directed from my posting on here....magic it gave a clear reading and a depth of 5.7m, about right for the marina.
Next night armed with Osma pipe fittings etc etc I go down and thought just before I do this I'll take a run over one of the wrecks to check the clarity and if needed move the thing about. It still read 5.7m and gave a great picture....even although I was at around 40m
Moral of the story....be sure first
Andy
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