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Transducer placement Garmin echomap

Discussion in 'Ask A Macgregor Owner' started by Wakulla212, Dec 12, 2018. Add this thread to a FAQ

  1. Wakulla212

    Wakulla212

    Joined Nov 5, 2014
    27 posts, 2 likes
    MacGregor 25
    US St Marks FL
    I recently pulled the trigger on a garmin echomap Chirp 50 chartplotter/depthfinder for my Mac 25. My question regards the transducer for the depthfinder. I would most prefer to mount it inside the hull and shoot the signal through the fiberglass, thus eliminating having the transducer outside to provide a surface for marine growth, and be subject to impact damage. I have seen the hockey puck style transducers epoxied into boats and work nicely. My transducer is more torpedo shaped
    [​IMG]
    Does anyone have any experience in epoxying one of these into the hull of their boat? What is the best location? I would expect you wouldn't want it anywhere near the swing keel. I was thinking of mounting it forward under the vberth.
     


  2. LeslieTroyer

    LeslieTroyer

    Joined May 20, 2016
    2,160 posts, 868 likes
    Catalina 36 MK1
    US Everett, WA
    Try different locations using a ziplock bag of water or toilet bowl wax. Pick the best.
     


  3. jjsbiggs

    jjsbiggs

    Joined Jun 24, 2010
    178 posts, 9 likes
    Macgregor 25
    US South Hero. VT
    I mounted the hockey puck style transducer for my Garmin GPS under the V berth in front of the keel. It seems to work fine there at the bottom of the hull. I don't think the style transducer you show will work inside the hull but I have not tried it. I would think Garmin would make a hockey puck style for the chart/plotter that you have.
     


  4. Sumner

    Sumner

    Joined Jan 31, 2009
    5,180 posts, 227 likes
    Macgregor 26S/Endeavour 37 .
    US Utah's Canyon Country
    [​IMG]
    Toilet bowl wax holds the transducers in the Mac and the Endeavour and has worked fine. In the Mac with a somewhat flatter hull shape we have a transducer just ahead of the ballast tank in the bow held in with the wax. The transducer shoots at a slight angle.
    [​IMG]
    The hull forward on the Endeavour is a lot steeper so I created a more vertical shoot through the hull by epoxying a piece of PVC pipe cut at an angle and then filled it up with epoxy and ...
    [​IMG]
    ... then used the wax on top of that. This is an under $100 fish/depth finder that is shooting through all that epoxy and the 1/2" hull just fine. If the transducer/depth finder ever has to be replaced it will be quite simple to pull it out of the wax and put on a new one. More here ....

    http://1fatgmc.com/boat/end-1/Endeavour-electronics/page-2.html

    Sumner
    ==============================================================================
    1300 miles to The Bahamas and Back in the Mac...
    Endeavour 37 Mods...

    MacGregor 26-S Mods...
    Mac Trips to Utah, Idaho, Wyoming, Canada, Florida, Bahamas
     



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