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Old 03-19-2011, 06:18 PM
BoulderX45 BoulderX45 is offline
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Attaching Depth Finder Sensor to the Hull

What kind of adhesive should I use to attach the depth finder sensor to the hull? I found it coming off the hull this morning.

Thanks to everyone who helped with the collant question on the LQ9! Now if I can find this collant at a local location!
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Old 03-19-2011, 06:28 PM
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rgardjr1 rgardjr1 is offline
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I think you're going to want to use 3M 4200 or 5200. I think the 4200 can be removed at a future date if you need to and the 5200 is much harder to take off.
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Old 03-19-2011, 09:58 PM
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dapicatti dapicatti is offline
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I simply used marine rated adhesive caulk from a building supply store. Please note, if you get an air bubble between the hull and the sensor, you may misread. Apply a good amount and push down. I would not re-seat it. Leave it be.
07 X star PWT edition
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Old 03-19-2011, 11:41 PM
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Miss Rita Miss Rita is offline
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When this happened to me I called Humminbird and they told me to use plain old epoxy glue. They specifically told me to not use silicone. I wouldn't use 4200 or 5200 unless they recommend it. Call them.

Last edited by Miss Rita; 03-20-2011 at 10:12 AM.
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Old 03-20-2011, 09:03 AM
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bturner2 bturner2 is offline
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Not sure if things have changed but when I've installed "shoot through the hull" transducers it always been epoxy. I would think that using a caulking material would absorb the radio waves being sent/received and cause poor performance of the transducer.
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Old 03-20-2011, 10:42 AM
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CantRepeat CantRepeat is offline
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And I believe they say do not use fast dry epoxy as well.

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Old 03-20-2011, 11:56 AM
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macattack macattack is offline
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The 2004/2005 MC depth finder installation instructions (Steps 1-3) recommend using epoxy/hardner to attach the transducer to the hull...see attached. mac
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File Type: pdf Depthfinder.pdf (86.3 KB, 362 views)
2005 ProStar 197TT, #31/100; Tournament PB 1.5 @ 38 off, June 2012
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Old 03-20-2011, 06:43 PM
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Dawg Dawg is offline
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I used Marinetex for my transducer. It works great. It is oil\gas proof.
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Old 03-22-2011, 12:46 PM
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Barefooter92 Barefooter92 is offline
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I used marine grade epoxy from Lowes. Two part mix by hand, no air bubles. Worked great.
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Old 03-23-2011, 12:29 AM
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GoneBoatN GoneBoatN is offline
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On the instructions for the Tranducers that I have read have called for Epoxy. Slow cure epoxy as it is less prone to trap air bubbles. As mentioned before it is very important to not trap air bubbles otherwise you will get mis-reads.
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