Dinghy Davit

Discussion in 'Dinghies' started by osd9, Jun 10, 2007.

  1. 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
    I agree. I researched this thread before I designed my own dinghy davit system. I posted lots of pics of it on my blog, so I won't waste time re-posting here, but if you need any fabrication work done to make a set, let me know.

    Dale
     
  2. Mmt

    Mmt New Member

    10
    Jun 19, 2013
    North Miami Beach FL.
    2008 310 Sundancer I/O .
    Raymarine C80 GPS
    5 KW Kohler Generator
    Mercruiser 350 MAG MPI 5.7 L.
    Bravo III Drives
    What kind of Davit ?
    I just bought a 2008 310 Sundancer which will be deliver to me next week ,and I wanted to know if the Hurly h20 davit will fit in my boat ? And any other advice concerning this boat will be appreciated​
     
  3. TimTech

    TimTech Member

    90
    Aug 26, 2013
    Gibraltar, Michigan
    1997 330 Sundancer
    Mercruiser 7.4L MPI Blue Water V-drives
    Does anyone have a copy of the Dom's Dinghy Davit drawings that they could share with me? Dom hasn't been on this site for a while and I'm having no luck contacting him. I just bought a dink and would like to take a crack at making my own davits.
    Thanks...
     
  4. HUMPH

    HUMPH Well-Known Member

    Nov 4, 2009
    SF BAY AREA
    2003 410DA
    2009 Walker Bay 13’
    CAT 3126TA's 350HP/
    50HP Honda
    RIP Dom... You are missed.
     
  5. mistercomputerman

    mistercomputerman Active Member PLATINUM Sponsor

    Jan 6, 2008
    Virginia Beach, VA
    410 Sundancer - 2001
    Twin 8.1L Mercruisers - 2009
  6. TimTech

    TimTech Member

    90
    Aug 26, 2013
    Gibraltar, Michigan
    1997 330 Sundancer
    Mercruiser 7.4L MPI Blue Water V-drives
    I searched his posts but not his name.
    Rest In Peace Dominic - You are are still inspiring others
     
  7. 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
    He sure is. Tim I don't recall seeing the davit plans in his documents that Linda gave me with the boat, but I'll look again after the holidays.
     
  8. sb in gp

    sb in gp Active Member

    814
    Oct 10, 2006
    Grosse Pointe, MI
    2017 460 Sundancer
    Cummins QSB-550 w/Zeus Pod Drives
    RIP Dom.

    I'm in the process of building my own set of Dom's Dinghy Davits. Masterfab is making the hinges with extensions. I'm mounting a Baltik 8.5 on the back of my 44DB. Wondering what the optimal length for the bunks might be. Dom's look to be about 3' or so. My dinghy is about 5' wide. I'm using 1" starboard, so it will be pretty sturdy. I was thinking that about 3.5' to 4' would be good and stable. Any thoughts?

    Can others post pictures of their designs and any improvements they may have made?

    Scott
     
  9. magstang1

    magstang1 Active Member

    May 30, 2010
    Lake St.Clair
    1998 31 Sedan Bridge
    Twin 350 Marine Power
    [​IMG]
     
  10. my3sons

    my3sons Well-Known Member GOLD Sponsor

    Feb 24, 2009
    NY (Lake Erie)
    2004 400DB, Onan 9 kw Gen, Highfield RIB,
    Cummins 6CTA
    Scott,

    Dom's original davit arms were 32". I made mine 36". My Walker Bay RIB is 62" wide and weighs about 200# with the outboard and fuel tank. I made the mounts that I welded to the plates that slip into the weaver davits 10" long to give me extra room to walk between the dink and the transom. There was 9" there. Dom's mounts were 5" long.
    I had them on our 360 for 4 years. Swim platform height on the 360 was 17" off the water. When I bought the 400, I cut the mounts off the plates and made up a raised and extended pair of brackets and added a second set of weaver davits because of the weight being up and back. I welded the same mounts to the top of the brackets. The 400 is stern heavy and has the much lower platform than yours, (it is only 6" off the water) if forced to come off plane in a hurry for some reason, the wake rolls a foot over the top of the platform, so I had to get the dink up above. After 4 years on the 360 and 1 year on the 400, the system has had no problems.
    Here's a few pics, hope it helps, good luck.


    On the 360
    [​IMG]

    Drill over size and wet out with epoxy, then fill with thickened epoxy and then drill smaller correct size holes centered through epoxy
    [​IMG]


    [​IMG]


    [​IMG]


    [​IMG]



    [​IMG]


    Keep in mind being able to move quickly between transom and dink, and room to get locker door open
    [​IMG]
     
  11. sb in gp

    sb in gp Active Member

    814
    Oct 10, 2006
    Grosse Pointe, MI
    2017 460 Sundancer
    Cummins QSB-550 w/Zeus Pod Drives
    Thanks mark. Interesting Davits you engineered. Dom would be proud. I'll keep my bunks around 36". I'll post some pics when I get them ready.
     
  12. magstang1

    magstang1 Active Member

    May 30, 2010
    Lake St.Clair
    1998 31 Sedan Bridge
    Twin 350 Marine Power
    Here you can see the size of my bunks on the bottom of my inflatable. I have a Raider 10' RIB.

    [​IMG]

    The length of the bunk has more to do with the height of your platform off the water than the hull of the dink itself. As long as your bunks reach the surface of the water then you are all set.

    [​IMG]
     
    Last edited: Apr 11, 2015
  13. my3sons

    my3sons Well-Known Member GOLD Sponsor

    Feb 24, 2009
    NY (Lake Erie)
    2004 400DB, Onan 9 kw Gen, Highfield RIB,
    Cummins 6CTA
    I couldn't resist....with our past history here of posts about certain animal on boats...
    This is an actual post in todays AGLCA's Daily Digest.
    I guess seriously though, if someone is looking for some St Croix parts, this could be a good find.

    [h=4]Reply: Davit for sale[/h]
    By: jetstream on April 12th, 2015, 10:44 am
    Anyone need a St. Croix heavy duty lift davit? It is 1/2 a set. The other 1/2 was lost at sea. The pair cost in the neighborhood of $2000. I am selling the single davit for $200. complete with mounting hardware. Great for lifting large animals onto the boat. Call for details and pictures. 775 351-6683
     
  14. worzy1014

    worzy1014 Member

    99
    May 12, 2011
    Live in Neenah, WI- Boat in Sheboygan and Sturgeon
    1989 300 Sundancer
    1981 245 Sundancer Sold)
    260's
    Mark,

    How do you pull the dink up so high? I have a low swim platform on my 300 and have built a set of davits to raise the raft up high enough to ride safely. Everything works well with my setup but it is hard to pull the raft up and mine isn't as high as yours.
     
  15. The Bill Collector

    The Bill Collector Well-Known Member GOLD Sponsor

    Jun 2, 2008
    Tacoma, WA
    1998 450 Sundancer, Achilles dinghy
    3126 Cat's
    mine is a little different... 2015-04-11 14.00.17.jpg 2015-04-11 14.00.38.jpg
     
  16. my3sons

    my3sons Well-Known Member GOLD Sponsor

    Feb 24, 2009
    NY (Lake Erie)
    2004 400DB, Onan 9 kw Gen, Highfield RIB,
    Cummins 6CTA
    I have block and tackle that I clip to a loop on the back of the bridge overhang. I can load the dink by myself if I have to, but it's easier if the admiral helps.
     
  17. searay495

    searay495 Active Member

    534
    May 26, 2008
    Long Island Sound
    2004 420 Sedan Bridge
    Twin Cummins CTA 8.3m
    480 HP
    Has anyone used the Harbormarine Dinghy sling davit system. Kind of looks like a cargo net? I bought mine over the winter and never had a chance to try it until now. For the life of me I can't pull up the dingy on to the swim platform. Is there a trick? If this system wasn't the best choice, is anyone using the traditional Weaver Dinghy davits. The swim platform is very high on my 340 Sundancer and was wondering if these might be a better option.
    Thanks,
    Mark
     
  18. BritLady

    BritLady Active Member

    Jul 30, 2011
    FL West Coast
    2006 - 340 SeaRay Sundancer, Garmin 840XS GPS & Garmin 7401XS GPS
    2019- Zodiac 300 RIB Dink 10'- 5"
    Inboard 8.1 Horizon Mercruiser & 2015 6HP Tohatsu O/B.
    Don't know anything about the Harbormarine system, we have Nautley davits and having issues pulling our dinghy back on nowadays so we are in the midst of installing a pulley system. Had hoped to finish it off last week-end but we didn't get the time, will be about 3-4 weeks away now as we are going away shortly. The link I detailed it in is here: http://clubsearay.com/showthread.php/73373-Finally-succumbed-to-a-dinghy-pulley-) which may be of interest to you because the 340 SP, as you state, is pretty high off the water and this helps a bunch.
     
  19. searay495

    searay495 Active Member

    534
    May 26, 2008
    Long Island Sound
    2004 420 Sedan Bridge
    Twin Cummins CTA 8.3m
    480 HP
    Hey Britlady,
    Thanks for responding. I remember reading that post. I appreciate the info. I spoke to the owner of the sling system and he gave me some pointers on how to (try) to make it work. I'll leave an update later.
     
  20. Smokeio

    Smokeio Member GOLD Sponsor

    88
    Aug 29, 2013
    Branford, CT
    2008 47 Sedan Bridge
    Achilles HB-315DX RIB
    600 QSCs
    Thanks to everyone who has posted on this and the other threads regarding DIY davits. Based on everything that has been posted, it was easy to make up my own set!


    [​IMG]
    [​IMG]
     

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