Dinghy Davits – Dom’s Ramps and Alex’s Mounts

Discussion in 'Dinghies' started by Alex F, Feb 26, 2011.

  1. firecadet613

    firecadet613 Active Member

    May 10, 2007
    Indiana
    '08 H240
    5.7
    Looks fantastic. Dale still be making me a set as well one I get the dinghy on my platform and figure out the best placement.

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  2. AFD

    AFD Active Member

    Jul 29, 2012
    Boston Harbor/Falmouth Ma
    1997 Sundancer 290 The fat beam version
    twins.
    Starboard 5.0 alpha 220HP
    Port 357 alpha 275hp
    4HP Yamaha for Dinghy
    I'm just spit balling here but...could you take the weaver mounts and mount them vertically in the rear face of your platform and alter the "leg" with a 90* bend to keep the platform completely flush when the dinghy isnt to here?

    I know the "anything can be done" saying but structurally, the dinghy actually rests on the platform not the mounts so it wouldn't be transferring the load any differently just changing the actual mounting face. That would keep from smashing toes if the dingy and levers weren't on it.
     
  3. AFD

    AFD Active Member

    Jul 29, 2012
    Boston Harbor/Falmouth Ma
    1997 Sundancer 290 The fat beam version
    twins.
    Starboard 5.0 alpha 220HP
    Port 357 alpha 275hp
    4HP Yamaha for Dinghy
    Magstang, I'm in no rush but I am considering doing this when I pick up a dinghy. I am buying a friends Achilles but it is burried in his summer cottage so I won't have it for a while, when I get it I'll let you know if there is any room.
     
  4. Havana Shamrock

    Havana Shamrock Well-Known Member SILVER Sponsor GOLD Sponsor

    Sep 9, 2008
    Long Island. N.Y.
    2005 500DB
    Furuno Tztouch2 12” MFD x2
    Furuno NXT radar
    Furuno Navpilot
    QSM11's,
    Honda 30HP
    Sea Doo 90 HP H.O.
    I wouldn't mount anything on the face of the platform, the pressure alone I think would damage it eventually. I had a set of tie down rings on my 320 for the dinghy , the wind blew the boat back into the dock and pushed the rings through the face of the platform. $1200 glass repair. The weaver davits are actually pretty low profile. And when the dinghy is off the arms I leave the arms I'm so people would not walk on the weavers. Hope this helps


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  5. magstang1

    magstang1 Active Member

    May 30, 2010
    Lake St.Clair
    1998 31 Sedan Bridge
    Twin 350 Marine Power
    I routinely pull my 10' rib on to my platform and tie it in place with some dock lines when we head out for the weekend. I'm sure it can be done. It just takes time and $$$.

    Its quite a process taking the motor off and tying up a spider web of dock lines. The davit would be a welcome relief.
     
  6. AFD

    AFD Active Member

    Jul 29, 2012
    Boston Harbor/Falmouth Ma
    1997 Sundancer 290 The fat beam version
    twins.
    Starboard 5.0 alpha 220HP
    Port 357 alpha 275hp
    4HP Yamaha for Dinghy
    I wasn't thinking about the torque during lifting, I guess it could crack or cause stress. I was only thinking about while it was in the upright position. That makes sense.
     
  7. tlrlc

    tlrlc Member

    199
    Sep 13, 2013
    Long Island, NY
    2007 310 sundancer
    mercury 6.2 horizon x 2
    vdrive/bow thruster
    Alex F would you recommend the starboard davits you mounted to the face of your old boat?


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  8. tlrlc

    tlrlc Member

    199
    Sep 13, 2013
    Long Island, NY
    2007 310 sundancer
    mercury 6.2 horizon x 2
    vdrive/bow thruster
    @havanashamrock did you ever get the mounts electro polished and if so who did you have do the work ? I'm also a LI'er


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  9. tlrlc

    tlrlc Member

    199
    Sep 13, 2013
    Long Island, NY
    2007 310 sundancer
    mercury 6.2 horizon x 2
    vdrive/bow thruster
    Alex F did you ever copy the template I would love a copy.


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  10. Alex F

    Alex F Well-Known Member

    Nov 14, 2006
    East Coast
    2005 420DB with AB 11 DLX Tender, Raymarine Dual E120 MFD/Radar/XMWeather, ST7001 A/P, AIS, SeaLift
    T-Cummins 450Cs Straight-Drives, 9KW Onan Generator, 40HP Yamaha for tender.
    Starboard worked like a charm for me. It's been a while, but I may have a template.
     
  11. Irie308

    Irie308 Active Member SILVER Sponsor

    967
    May 28, 2013
    CT
    2004 420 Sedan Bridge, GHS Hydraulic Lift
    Dual Raymarine E120W
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
    I just had Masterfab (CSR member) fabricate this setup for me. He had them electro polished. Looks and works great. I need to post some pics when I have a chance but couldn't be happier.
     
  12. Havana Shamrock

    Havana Shamrock Well-Known Member SILVER Sponsor GOLD Sponsor

    Sep 9, 2008
    Long Island. N.Y.
    2005 500DB
    Furuno Tztouch2 12” MFD x2
    Furuno NXT radar
    Furuno Navpilot
    QSM11's,
    Honda 30HP
    Sea Doo 90 HP H.O.
    Yes they where electroplolished and looked and held up great. The key here is to have a fabricator make them from 316L SS as Dale did for me with SS welding rods etc. then had them electropolished.


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  13. MasterFab

    MasterFab Active Member TECHNICAL Contributor

    Aug 17, 2010
    Wallkill, NY
    2002 340 Sundancer, Rescued, Restored, Modernized, and now Sold
    8.1L Horizons, ZF 63 V Drives
    Dean, really? No pics?

    Dale
     
  14. tlrlc

    tlrlc Member

    199
    Sep 13, 2013
    Long Island, NY
    2007 310 sundancer
    mercury 6.2 horizon x 2
    vdrive/bow thruster
    Yeah we want pics... When u can that is...


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  15. tlrlc

    tlrlc Member

    199
    Sep 13, 2013
    Long Island, NY
    2007 310 sundancer
    mercury 6.2 horizon x 2
    vdrive/bow thruster
    Yes please do look when you can


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  16. Irie308

    Irie308 Active Member SILVER Sponsor

    967
    May 28, 2013
    CT
    2004 420 Sedan Bridge, GHS Hydraulic Lift
    Dual Raymarine E120W
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
    Hehe...they work so well and your measurements were spot on, I don't need to remove the dink to fit in my slip. I watch my dock mates struggle with loading and unloading their dinks at the docks. The next time we head out I'lll get some pics
     
  17. tlrlc

    tlrlc Member

    199
    Sep 13, 2013
    Long Island, NY
    2007 310 sundancer
    mercury 6.2 horizon x 2
    vdrive/bow thruster
    Any luck finding templates?
    Or a least measurements for the actual mount in transom?
    Thinking I'm going to do mount in 1"
    And rest in 3/4"...


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  18. Alex F

    Alex F Well-Known Member

    Nov 14, 2006
    East Coast
    2005 420DB with AB 11 DLX Tender, Raymarine Dual E120 MFD/Radar/XMWeather, ST7001 A/P, AIS, SeaLift
    T-Cummins 450Cs Straight-Drives, 9KW Onan Generator, 40HP Yamaha for tender.
    PM me your address and I'll send you a copy of the templates.
     
  19. Daves270

    Daves270 New Member

    6
    Jul 23, 2012
    New England
    320 Sundancer 2005
    270 Sundancer 1994
    Twin Mercruiser 6.2L MPI Horizons
    7.4L Mercruiser w/ Bravo II drive
    Hi Alex. I came across your dinghy davit thread and like your mounting idea. I also have a 05' 320 Sundancer with a swim platform like yours and was wondering how your mounts and davits were holding up? Have you made any changes over the years?
    Thanks
     
  20. Alex F

    Alex F Well-Known Member

    Nov 14, 2006
    East Coast
    2005 420DB with AB 11 DLX Tender, Raymarine Dual E120 MFD/Radar/XMWeather, ST7001 A/P, AIS, SeaLift
    T-Cummins 450Cs Straight-Drives, 9KW Onan Generator, 40HP Yamaha for tender.
    I made a minor change by moving up to 420DB with hydraulic lift. :)

    The mounts worked fine to the last day. My dink was light with inflatable floor and 4HP engine, so my setup handled it pretty good.
     

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