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  1. #1
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    Aug 2016
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    East Tennessee
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    Mega Thru-Hull Leveling

    I just received my XPTH 9 20 MSI T transducer, and the first thing I notice is the wedge shape. When leveling the install, which surface should I reference...top or bottom? Looks as though it will definitely make a difference.
    1992 Ranger 690
    1991 Johnson 150 Fastrike
    2014 Minn Kota Terrova 112 w/i-Pilot Link
    (Coming Soon) Humminbird Helix 10 Mega SI GPS G2N
    Humminbird Helix 7 DI GPS G2N
    Helix 5 DI

  2. Member Wayne P.'s Avatar
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    Jan 2010
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    #2
    The face of the transducer should be as close to parallel with the water's surface at idle speed as you can get. That is your only reference point other than the bottom of the body of water.
    Wayne Purdum
    Charlottesville, Va.
    Helix 12 CHIRP MEGA+ SI G3N/G4N, Helix 15 CHIRP MEGA SI+ GPS G4N
    SOLIX 12 SI/G3, Helix 8 CHIRP MEGA SI+ G4N, Ultrex 80/LINK, MEGA360,
    MEGA LIVE, LIVE TL

  3. Member
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    Aug 2016
    Location
    East Tennessee
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    #3
    Thank you. That's what I figured, but didn't think it a bad idea to ask...especially before I start drilling a 1 1/8" hole through the step of my hull. LOL

    I recall reading somewhere that they are sometimes installed backwards (curved end aft-ward). Is there anything to this and, if so, why?
    1992 Ranger 690
    1991 Johnson 150 Fastrike
    2014 Minn Kota Terrova 112 w/i-Pilot Link
    (Coming Soon) Humminbird Helix 10 Mega SI GPS G2N
    Humminbird Helix 7 DI GPS G2N
    Helix 5 DI

  4. Member Wayne P.'s Avatar
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    Jan 2010
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    Charlottesville, VA
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    #4
    You can install it reversed if you need to get the correct attitude. You can swap sides in the unit menu to offset doing that.
    Wayne Purdum
    Charlottesville, Va.
    Helix 12 CHIRP MEGA+ SI G3N/G4N, Helix 15 CHIRP MEGA SI+ GPS G4N
    SOLIX 12 SI/G3, Helix 8 CHIRP MEGA SI+ G4N, Ultrex 80/LINK, MEGA360,
    MEGA LIVE, LIVE TL

  5. Member
    Join Date
    Aug 2016
    Location
    East Tennessee
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    #5
    I see...work smarter, not harder. Thank you, sir.
    1992 Ranger 690
    1991 Johnson 150 Fastrike
    2014 Minn Kota Terrova 112 w/i-Pilot Link
    (Coming Soon) Humminbird Helix 10 Mega SI GPS G2N
    Humminbird Helix 7 DI GPS G2N
    Helix 5 DI