Tab switch confusion

Discussion in 'Bennett Trim Tabs Vendor Forum' started by Seapig, Oct 18, 2019.

  1. Seapig

    Seapig Member

    63
    Dec 25, 2018
    Oakham MA or Winnipesaukee NH
    12 Sundancer 310 w Axius
    Twin 350 Mags w Bravo drives
    This was my first year with our 2012 310 Dancer (twin Bravos). My former boat was a 2005 260 with a single Bravo. The older Dancer had 2 rocker switches for the tabs. For “bow down” the indication was to push the switch at the top or “up”. Our 310 has toggle switches with a boat icon and arrows pointing upward and downward at the bow next to the toggle switches. I assumed that to “bow down” I’d push the switch down (as indicated by the arrows) or “bow up” I’d lift the toggle. They seemed to me to work backwards all season.

    Today, while on the hard I experimented and indeed the toggles work opposite of their arrows. To extend the actuator (tab down or bow down) I lift the toggle.

    Can I assume that they are working as intended and I simply misinterpreted the labeling (arrows)?
     
  2. Creekwood

    Creekwood Well-Known Member GOLD Sponsor

    Apr 26, 2009
    Oakville and Georgian Bay, Ontario
    '97 330 Sundancer, Raymarine C80 suite with radar, Mercury 310 Hypalon w/8hp Yammie 2stk
    2X 454 carbs w/ vDrives
    The way they are supposed to work is that the toggle moves the way you want that side of the boat to move.

    So if you push the top of the port (left) switch, that will push the port side bow down (by engaging the starboard side tab, interestingly). If your switches are mounted on a flat surface it is easier to visualize.

    As an example, if your boat is running with a list such that the port side is low, then the starboard bow will be high. So you would push the right switch top to push the bow down on the starboard side. The system will be deploying the port tab, which will lift the port stern up, which will drop the starboard bow, and level the boat.

    Hmmm. Maybe it isn't that obvious....:confused:

    I have installed a Bennett Auto Tab Control which makes it almost idiot proof and automatically sets the tabs at the right way to maintain the preset leveling and adjusts them as you drive. Its very handy.
     
    Last edited: Oct 18, 2019
    Chris-380 likes this.
  3. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass, cape coral fl
    1999 Powerquest legend 260 sx
    502 mpi Bravo 1
    SeaRay ass backwards approach to trim tab controls.
     
    bbwhitejr likes this.
  4. Creekwood

    Creekwood Well-Known Member GOLD Sponsor

    Apr 26, 2009
    Oakville and Georgian Bay, Ontario
    '97 330 Sundancer, Raymarine C80 suite with radar, Mercury 310 Hypalon w/8hp Yammie 2stk
    2X 454 carbs w/ vDrives
    Its not just Sea Ray. Its the way recreational boats tabs are set up.
     
    Chris-380 likes this.
  5. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    They should actually be acting the same way the rocker switches did on your 260DA (which also had little pics directly on them, but probably had worn off). Imagine the "toggle" was glued to the center of the rocker switch.

    Another way you can think about this is to imagine the toggle switch is the "stick" of an airplane. Imagine you had your hand on the stick. Just like on an airplane, if you push forward on the stick (lift the toggle), the nose/bow goes down (extending the tab). Pull back on the stick (push the toggle downwards) and the nose/bow comes up (retracting the tab).
     
    Chris-380 likes this.
  6. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass, cape coral fl
    1999 Powerquest legend 260 sx
    502 mpi Bravo 1
    Not true. The "go fast" I have now and some other past boats of mine were set up in a more understandable configuration. 2 toggle switches side by side. Toggle up on the left hand switch and the port tab goes up. Same for the switch on the right, toggle down , stb tab goes down. Nice and freakin simple.
     
  7. Boat Guy

    Boat Guy Well-Known Member

    I had the same issues when thinking logically that the controls represented the trim tabs. But they don't...They represent the vessel in a similar way a trim wheel works in a plane...

    So push down and nose down, push up, nose up...
     
  8. Seapig

    Seapig Member

    63
    Dec 25, 2018
    Oakham MA or Winnipesaukee NH
    12 Sundancer 310 w Axius
    Twin 350 Mags w Bravo drives
     
  9. Seapig

    Seapig Member

    63
    Dec 25, 2018
    Oakham MA or Winnipesaukee NH
    12 Sundancer 310 w Axius
    Twin 350 Mags w Bravo drives
    Thanks. That’s quite helpful.

    The SeaRay switch illustration arrows are ass-backwards
     
  10. Seapig

    Seapig Member

    63
    Dec 25, 2018
    Oakham MA or Winnipesaukee NH
    12 Sundancer 310 w Axius
    Twin 350 Mags w Bravo drives
    Nope. Nose down is push up.
     
  11. Seapig

    Seapig Member

    63
    Dec 25, 2018
    Oakham MA or Winnipesaukee NH
    12 Sundancer 310 w Axius
    Twin 350 Mags w Bravo drives
    Thanks for that.

    It justifies SeaRay’s ass-backwards lablying
     
  12. Seapig

    Seapig Member

    63
    Dec 25, 2018
    Oakham MA or Winnipesaukee NH
    12 Sundancer 310 w Axius
    Twin 350 Mags w Bravo drives
    So tabs fully retracted is holding both switches “down”
     
  13. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    Correct. But only think about what you want the bow to do. If you start thinking about the actual tab movement, then you also need to remember that the port switch controls the stbd tab and the stbd tab controls the port switch. Get's more confusing than just thinking about what the bow does.

    It's funny... I don't think I've ever looked close enough at the little pictures. Do you have a picture of yours, by chance?
     
    Last edited: Oct 19, 2019
    Chris-380 likes this.
  14. Express 390

    Express 390 Active Member GOLD Sponsor

    305
    Sep 14, 2018
    South Shore of Long Island NY
    1986 SeaRay 390 EC
    1993 SeaRay 290 DA single 7.4 /Bravo 2
    Twin 454 Crusaders inboards 4 blades
    Nope that is correct when the tab goes down so does the bow and that's on my rocker switch's from Bennett
    bow down push switch up
     
  15. Seapig

    Seapig Member

    63
    Dec 25, 2018
    Oakham MA or Winnipesaukee NH
    12 Sundancer 310 w Axius
    Twin 350 Mags w Bravo drives
    It's funny... I don't think I've ever looked close enough at the little pictures. Do you have a picture of yours, by chance?[/QUOTE]

    From my owners manual.
     

    Attached Files:

  16. Express 390

    Express 390 Active Member GOLD Sponsor

    305
    Sep 14, 2018
    South Shore of Long Island NY
    1986 SeaRay 390 EC
    1993 SeaRay 290 DA single 7.4 /Bravo 2
    Twin 454 Crusaders inboards 4 blades
    From my owners manual.[/QUOTE]
    I'm sorry no i don't But here's the typical switch BENLS3000-2.jpg t
     
  17. Creekwood

    Creekwood Well-Known Member GOLD Sponsor

    Apr 26, 2009
    Oakville and Georgian Bay, Ontario
    '97 330 Sundancer, Raymarine C80 suite with radar, Mercury 310 Hypalon w/8hp Yammie 2stk
    2X 454 carbs w/ vDrives
    From my owners manual.[/QUOTE]

    Next time you are on the boat, can you check if the switch labeled as "port" controls the port or the starboard tab.

    I checked the Bennett web site info and they make it clear that the port switch controls the starboard tab. But maybe it is just the Bennett standard and others do it differently. Are yours bennett tabs?

    Bennett.JPG
     
  18. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass, cape coral fl
    1999 Powerquest legend 260 sx
    502 mpi Bravo 1
    A couple of searay's ago I had a similar switch. Unscrewed it, turned it end for end and screwed it back down. Now it worked like my description in post 6
     
  19. Seapig

    Seapig Member

    63
    Dec 25, 2018
    Oakham MA or Winnipesaukee NH
    12 Sundancer 310 w Axius
    Twin 350 Mags w Bravo drives
    Next time you are on the boat, can you check if the switch labeled as "port" controls the port or the starboard tab.

    I checked the Bennett web site info and they make it clear that the port switch controls the starboard tab. But maybe it is just the Bennett standard and others do it differently. Are yours bennett tabs?

    View attachment 76057 [/QUOTE]
    Mine are Bennett tabs and now that I’ve gotten “straightened out” on this thread, I’ll be operating them correctly next season.
     

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