Can I glue lower trim tab mount to transom

Discussion in 'Boat Design' started by the brain, Mar 24, 2017.

  1. the brain
    Joined: Sep 2016
    Posts: 365
    Likes: 1, Points: 16, Legacy Rep: 10
    Location: AL

    the brain Senior Member

    Can I glue lower trim tab mount to transom?

    even though upper shock mount is under water level I'll thouh hull bolt just incase glue doesn't hold.

    I don’t want any holes though my aluimuin skinned hull. Certainly don’t want 6 per trim tab )just for bottom 2 more for top of shock).

    ?1.Can I glue blocks of marine plywood to hull then screw tabs into blockand expect 5200 to hold?

    I plan secondary (kicker)10hp engine, so now am concerned w/ rear mounting
    Ray marine depth/sounders transducer.

    Since my engine is setback 21”. I could fab an adjustable bracket?

    ?.2 To avoid trubulant waters will the transducer need to be mounted to engine POD?

    ?.3 can ducer be mounted under front/center of POD? or side middles way to mount to POD,

    ideally I'd like a wingnut holding ducer for easy removal to hide.

    Thanks TB
     

    Attached Files:

    • tt1.jpg
      tt1.jpg
      File size:
      191.4 KB
      Views:
      350
    • tt2.jpg
      tt2.jpg
      File size:
      156.1 KB
      Views:
      407
  2. 7228sedan
    Joined: Nov 2009
    Posts: 342
    Likes: 11, Points: 18, Legacy Rep: 60
    Location: New Jersey USA

    7228sedan Senior Member

    I'd think that there is a significant force on the tabs to not rely solely on some 5200. If it were me, it'd be through bolted with adhesive sealant. likewise with the transducer. For proper functionality, I'd stick to the tried and true. If you use adequate hardware & sealant you should not have any problems.
     
  3. the brain
    Joined: Sep 2016
    Posts: 365
    Likes: 1, Points: 16, Legacy Rep: 10
    Location: AL

    the brain Senior Member

    ok sounds good

    still waiting on response to ?s 2/3
     
  4. 7228sedan
    Joined: Nov 2009
    Posts: 342
    Likes: 11, Points: 18, Legacy Rep: 60
    Location: New Jersey USA

    7228sedan Senior Member

    Typically with outboard powered boats, the transducer is attached to the transom. It needs to be in "clean" non turbulent water in front of the prop.
    Do you have a picture of the transducer you are using?
     
  5. the brain
    Joined: Sep 2016
    Posts: 365
    Likes: 1, Points: 16, Legacy Rep: 10
    Location: AL

    the brain Senior Member

    not my boat. but heres the transducer(the black one) I'll be using
     

    Attached Files:

  6. 7228sedan
    Joined: Nov 2009
    Posts: 342
    Likes: 11, Points: 18, Legacy Rep: 60
    Location: New Jersey USA

    7228sedan Senior Member

    That's where I'd expect it to be. What were you referring to with "engine POD"?
     
  7. the brain
    Joined: Sep 2016
    Posts: 365
    Likes: 1, Points: 16, Legacy Rep: 10
    Location: AL

    the brain Senior Member

    pod holds main engine

    trim tab flaps and a kicker where should I mount ducer?
     

    Attached Files:

  8. 7228sedan
    Joined: Nov 2009
    Posts: 342
    Likes: 11, Points: 18, Legacy Rep: 60
    Location: New Jersey USA

    7228sedan Senior Member

    Cool video BTW, motor sounds awesome!
     
  9. 7228sedan
    Joined: Nov 2009
    Posts: 342
    Likes: 11, Points: 18, Legacy Rep: 60
    Location: New Jersey USA

    7228sedan Senior Member

    If it were me, I'd put the transducer down by the drain plug. Either side, wherever there was clearance
     
  10. the brain
    Joined: Sep 2016
    Posts: 365
    Likes: 1, Points: 16, Legacy Rep: 10
    Location: AL

    the brain Senior Member

    I think the engine is mounted a tad low?

    yes down by the drain plug would be the safest spot

    how about the transducer mounted under front/center of POD? or side middles way to mount to POD,
     
  11. 7228sedan
    Joined: Nov 2009
    Posts: 342
    Likes: 11, Points: 18, Legacy Rep: 60
    Location: New Jersey USA

    7228sedan Senior Member

    The transducer attached to the pod would only allow the sounder to work at sub planing speeds. Also there would likely be considerable sonar disruption; there's a lot of turbulence that swirls behind a boat. And depending on the shape of the sonar beam, it may bounce off the transom. The bottom of the transducer should be right at, or below the hull.
     
  12. Mr Efficiency
    Joined: Oct 2010
    Posts: 10,384
    Likes: 1,020, Points: 113, Legacy Rep: 702
    Location: Australia

    Mr Efficiency Senior Member

    I'd use chewing gum, have you ever seen it lift off anything ? Seriously, though, if you have a visceral dislike of drilling holes underwater, you could possibly construct a bracket that is bolted through the hull only above the waterline, to which your tabs are attached.
     
  13. the brain
    Joined: Sep 2016
    Posts: 365
    Likes: 1, Points: 16, Legacy Rep: 10
    Location: AL

    the brain Senior Member

    I’m starting to think the orginale ducers position mite work fine because

    The trim tab will only enguage itself (createing extra turbulence) when underway at probabelly Over 15Knt.s
    the whole objective is to have the tabs help minimize unstableness at WOT which is 53MPH equivelant to 46knts (remember I used a autmomoblie GPS to as speedo).


    w/ more adjustments more speed because I have about 250 300 unused of my 5500RPMs

    Edit I still think the engine is a tad high notice when I trim up how the cav.plate starts to plow.
    ?1.will tabs help lift the stern to prevent the plow?

    ?2.should I be observeing the depth.finder at this 15 and higher Knt.s speed? I troll slow in fresh water faster in SW upto 15Knt.

    When I mount the ducer I will use a long ruler placed on lowest part of boat Keel then have the ruler exactly in the middle of ducers foot.

    ?3.this means the ducer will be submerged by about 12” (that’s how high the waterlevel is.

    Edit the ducer is little light it would be easy to fabup a bracket w/ adjustment .
    Thanks Guy's for advice TB
     

    Attached Files:


  14. the brain
    Joined: Sep 2016
    Posts: 365
    Likes: 1, Points: 16, Legacy Rep: 10
    Location: AL

    the brain Senior Member

    what I should have wrote was when The transducer attached to the pod I would fab a bracket bolted to POD ducer would be located in it's orginale spot.

    TB
     
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.