Installing bow thruster 260 Sundancer

Discussion in 'Installation Photos/Specs' started by Roland Illvesand, Nov 12, 2020.

  1. 270win

    270win Member PLATINUM Sponsor

    996
    Jul 12, 2009
    Atlanta, GA
    2001 Sea Ray 280 Dancer
    6.2 MerCruiser Bravo III
    For anyone interested. There's an option to ignore any specific member of the forum...nice to have sometimes.
     
  2. 270win

    270win Member PLATINUM Sponsor

    996
    Jul 12, 2009
    Atlanta, GA
    2001 Sea Ray 280 Dancer
    6.2 MerCruiser Bravo III
    This is something I've wondered about in the smaller cruisers. Just last weekend we had winds blowing 20mph plus 90 degrees to the slip. My single engine 280DA with the full camper canvas up was a BEAR to get backed in! It took about 5 shots, but I finally got it with a brief lull in the wind speed.
     
    Roland Illvesand likes this.
  3. Thornton69

    Thornton69 Active Member

    649
    Sep 15, 2014
    Northern BC
    1981 245 SDC
    2020 Solar 420
    '97 5.7 Bravo 2
    '20 Merc 25 EFI Jet
    I can think of more than a few times a bow thruster would have been handy self docking in a cross current or wind. That's in a 245. It would be nice to casually step on the dock and only have to worry about the rear cleat. Ignore any haters.
    Any updates?
     
  4. FishOn

    FishOn Member

    114
    May 2, 2018
    Washington State
    2000 260 Sundancer 260DA
    5.7 Mercruiser w/ Bravo3
    Definitely will be interesting to see the completed project. A few questions.
    - what is the purpose on the centerline beam that is in the picture? The one that you had to remove a section of.
    - Was there a layer of plywood/fiberglass on top of that beam that you had to remove?
    - Was there foam filling both void spaces (above/below the fiberglass)?
    - It looks like the carpeted platform that you sectioned out has screws holding it on.? I see 4 in the photo. My 2000 260 doesn't have these, but maybe they are hidden in the carpet. Would it of been easier to just remove the whole platform to get access to the compartment?
    It'll be good to see how you finish this off. Will you be sealing off the chamber to protect from water intrusion? Also I'll be curious to see the completed project on the exterior as well. It'd also be good to know if there's any effect on planning performance of course. I saw a 280 once with thrusters and the skipper of that vessel said the thrusters are above water when planing. Probably the same for you. Thanks for posting all of this.
     
  5. Roland Illvesand

    Roland Illvesand Active Member

    109
    Jan 14, 2019
    Stockholm Sweden
    Sea Ray 260 DA 2001 Mercruiser 5.7 EFI and Bravo 3
    Mercruiser 5.7 EFI and Bravo 3
    I will install the tunnel during the spring because it’s to cold now. I will update this tread when that work start.
     
  6. Roland Illvesand

    Roland Illvesand Active Member

    109
    Jan 14, 2019
    Stockholm Sweden
    Sea Ray 260 DA 2001 Mercruiser 5.7 EFI and Bravo 3
    Mercruiser 5.7 EFI and Bravo 3
    I’ll try to answer your questions.

    The centerline beam are a support for the floor and it did only have fiberglass in the bottom against the hull.
    Whole are where filled with foam and it was wet probably due to condensation.
    It’s not screws you see, it’s fastening points for a carpet.
    I will not seal this of because I need to reach the electric motor for maintenance so there will be a hatch in the floor.

    This installation will not affect planning because the tunnel will be over water when planning.
     
  7. FishOn

    FishOn Member

    114
    May 2, 2018
    Washington State
    2000 260 Sundancer 260DA
    5.7 Mercruiser w/ Bravo3
    I'm confused. There was a "floor" on top of the wood beam/piece? Or does it just sit on top of the fiberglass hull for unknown purposes?
     
  8. Blueone

    Blueone Well-Known Member SILVER Sponsor

    Jan 24, 2007
    Lake Erie, Ohio
    2004 420 Sundancer
    Cummins 6CTA 450's
     
  9. Henry Boyd

    Henry Boyd Well-Known Member GOLD Sponsor

    Apr 24, 2007
    Newburyport, on the peaceful and serene Merrimack
    ‘09 Sabre 38 Hardtop Express “Serenity”
    Volvo D6 w/IPS450 Pods
    I believe he is talking about the little step up under the vee berth where vee berth table mount is. You can see it in the the pictures in the first post(s). It separates two foam sections and looks like it supports the table leg mount.
     
  10. FishOn

    FishOn Member

    114
    May 2, 2018
    Washington State
    2000 260 Sundancer 260DA
    5.7 Mercruiser w/ Bravo3
    Hmm, in the pictures it looks too low to support the carpeted platform with the table mount on it. Maybe it's an odd perspective or something?
     
  11. FishOn

    FishOn Member

    114
    May 2, 2018
    Washington State
    2000 260 Sundancer 260DA
    5.7 Mercruiser w/ Bravo3
    Roland, I noticed when looking into some fiberglass stuff for my growing list of projects and noticed that they sell "fiberglass tunnels" for bow thruster installations. Might be worth a look. My understanding is that these thruster units are pretty much seal and maintenance free. If so I'd be inclined to seal the whole thruster unit in a fiberglass tube and bond it with the hull. That way you can still have access to the battery and what not but are protected against water intrusion. Just a thought. There also seems to be a science to the exact location of the thrusters. I know the one 280da i saw that had these installed seemed to be sucking air into the thrust so likely wasn't very effective. Good luck on the project when you get back to it. Itll be great to see how it all turns out and performs.
     
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  12. Chris-380

    Chris-380 Well-Known Member

    Jan 20, 2019
    Pontoon Beach IL
    2000 380 Sundancer
    7.4L Horizon w/V drives
    this is still one of my favorite posts on this Forum!
     
  13. Espos4

    Espos4 Well-Known Member

    Jan 1, 2017
    Long Island NY
    2007 240 Sundeck
    350 MAG Bravo 3 W/DTS
    One of the few times that the sarcasm came through in a post.
     
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  14. Roland Illvesand

    Roland Illvesand Active Member

    109
    Jan 14, 2019
    Stockholm Sweden
    Sea Ray 260 DA 2001 Mercruiser 5.7 EFI and Bravo 3
    Mercruiser 5.7 EFI and Bravo 3
    If you are interested you can read the installation manual here: https://public.sleipner.no/documents/5408/download/
    The tunnel shall be mounted as low as possible to prevent the thruster to sucking air.
    I bought a glass fiber tunnel together with all other parts for this installation.

    89BFDE8D-302C-418E-A018-28D745C25B49.jpeg
     
  15. carterchapman

    carterchapman Well-Known Member TECHNICAL Contributor SILVER Sponsor

    Mar 25, 2008
    Lake Chickamauga/Marietta, GA/Ft. Myers, FL
    2006 Sea Ray 58 DB
    MAN CRM V8-900s, Twin Disc Drives; Onan 21.5 Generator
    Hej Roland,

    Impressive work! Looking forward to seeing the competed project!

    Glöm inte att lägga upp några vackra bilder av den svenska skärgården i sommar? Jag har inte sett det på över 20 år och jag saknar det. (Translation - Please don't forget to send some beautiful pictures from the Swedish Archipelago this summer - it's been over 20 years since I have visited).

    Vänliga hälsningar,

    Carter
     
  16. Roland Illvesand

    Roland Illvesand Active Member

    109
    Jan 14, 2019
    Stockholm Sweden
    Sea Ray 260 DA 2001 Mercruiser 5.7 EFI and Bravo 3
    Mercruiser 5.7 EFI and Bravo 3
    Carter! I promise that I will show pictures of the archipelago :)
     
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  17. FishOn

    FishOn Member

    114
    May 2, 2018
    Washington State
    2000 260 Sundancer 260DA
    5.7 Mercruiser w/ Bravo3
    Ah, you read the instructions. Well that's smart indeed, . Sounds like you have it all figured out. It'll be interesting to see how it all turns out and performs for you! Thanks for posting it!
     
    Roland Illvesand likes this.

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