Dinghy Davit

[osd9]

I've had a few requests for some dimensions of the davits I made. I decided to attach the drawings here. I made these drawings and then brought them to my local fabricator. If you choose to use them, use them at your own risk.

 

[mrsrobinson]

Hello,

I also made my "own" Dinghy Davit.
I used the idea from Dom, aldo I used a plastic support system.
The thickness of the plastic is 1 inch, and it's unbreakable and can resist heat and cold.
The rvs 316 receivers are also almost the same concept.
Here are some pics, after the weekend I post pics if they are mounted on the boat.
Cost $100,- total :smt001

Thanks Dom:smt038

The Mrs lets your store the ding on the kitchen table? Now that is money!

 

[King Paul]

Hurley,

Damage done. No Hurley products on my boats. Nor would I recommend them to others now.

Paul
BTW, if you repost and quote my words, it's plagiarism, and I take that very seriously.

 

[PMvdb395DA]

When I looked on the Hurley site, I saw some receiver brackets that looked familiar.....

Seems like Hurley liked your concept about using the weaver receiver Dom :wow:

Now who is copying who now???????????


Regards Peter.

 

[osd9]

:smt043:smt043I'll get my attorney on it right of way!!!.......:smt043:smt043

 

[Woody]

I don't know if the complete system is any good but the roller idea here looks like it would make things easier. http://www.trickdavit.com/index.html

 

[Hampton]

I don't know if the complete system is any good but the roller idea here looks like it would make things easier. http://www.trickdavit.com/index.html

That may be a player.

 

[Rich122]

I'm chimming in a little late but...

I have the Hurley system. For the few times I use the dink it was the best option at the price compared to spending 20K+ for a lift system, and then having the chocks block what is a great big patio on the water when the dink is not needed.

Dom. I noticed you had a tiedown strap hooked to those "searay" ports pressed into the swimplatform. How'd that hold up for you? I tried that and although they are screwed in mine began to pull up as the dink bounced in heavy seas. So I changed the strap and hooked it directly to the underedge of the platform. That worked.

Also Asureyus was correct in his statement about the Hurley. It works great on low platforms, but on his 460 or my 48 it is too high to pull up. I have a 310 RIB w/9.9 and at 200 lbs to slide it off and pull it up the dink goes vertical and you need to have a line tied to the outside tube or it will flip. My solution: I pull the dink bow to platform, and pull up. The weight is all in the back and the dink just slides up and then flip up on the cradle, then all I do is swing it around and it sits correctly. This works reasonably well.

Rich

 

[osd9]

Dom. I noticed you had a tiedown strap hooked to those "searay" ports pressed into the swimplatform. How'd that hold up for you? I tried that and although they are screwed in mine began to pull up as the dink bounced in heavy seas. So I changed the strap and hooked it directly to the underedge of the platform. That worked.

Rich:

I only used those straps once and without the motor on the dink. I switched and went to nylon ribbon tie downs that I hook to the port and stbd (fore and aft) D ring of the dink and then loop 'through' the searay ports. Works great.

 

[Rich122]

Dom

Glad it worked out. My ports began to pull up when I looped the strap around them. Maybe my dink is heavier then yours) I got under the platform and sure enough the self tapping screw had pulled out. I fixed it with a bigger screw. Like you I thought the ports were the perfect place to hold down the dink without adding ss hold downs onto the platform. I don't use the dink much and I like the free open space. The 2 hurley brackets (like your shoes) are really not in the way.

You did a great job fabricating the system.

 

[Four Suns]

I did a post some time ago... it may have been on SRO but.. those ports on the swim platform need to be maintained. When you come off plane, there is significant pressure put on them and the only thing holding them in is a few self-tapping small screws (of various sizes of course). There is a wood core in the platform around those holes for the screws to bite into and when they come lose, the core will get wet... I've had to have some fiberglass work done every year around those ports when my boat is hauled in the spring. This may because I do a lot of fishing and when you drift around in big seas or troll, that platform is not your friend.

 

[osd9]

Dom

Glad it worked out. My ports began to pull up when I looped the strap around them. ...

I didn't do a very good job of explaining how I secure, and I have no pics. Let me try again to clear it up....

I hook one end of the strap to the dinghy's stbd D-ring (the side closest to the transom of the big boat). I then drop the other end of the strap through the 'searay ports' and then reach under the outside of the swimplatform to grab it. I then take that end and hook it to the dinghy's port D ring. When I tighten up the strap, the stress is on the swimplatform and not the 'searay port' in the swimplatform.

I hope that clears it up.....:smt101

 

[Hampton]

Well, I'm really interested in adding davits right now, but I'm not excited about spending 1200 + accessories. Dom, any updates?

 

[osd9]

Hey John.....no update other than I love my davits. Having them as two seperate units, each with their own weaver receiver, makes storage of the davits when not in use a breeze. I bought my weaver receivers on ebay.

I have a 270 Mercury PVC airdeck with a 5hp Mercury 2 stroke. I can lift the whole unit onto the davits very easily. No issues what so ever. My platform is a little lower than yours, but I would bet I could lift my same set up even if my platform were higher.

A local fabricator made my hinges....Pete made a set for his 360, as did a few others here on CSR who I've PM'd over time.

Ask away with any specfic questions, and I'll be happy to try and help.

 

[Hampton]

OK, Thanks, Dom.

Based on reading other people's threads, it seems that I may have to pull the bow up first and tie it on, then pull the stern of the dinghy up. If so, would davits like your be able to support the side loads?

What do you think about making the plastic rails double-thickness? Any benefit? My dinghy is an all-inflatable 9'6" of about 85# with a 65# 8HP 2-stroke.

 

[osd9]

I've not pulled it up bow then stern. However, once I have the dink up on the davits, I 'bully' it all over the place and I've never had a problem. I've been in some rough seas, the Delaware, and everything just held beautifully.

I don't remember all the numbers, but I think my dink is about the same weight, 85#'s or so, and my motor is about 55#'s....give or take. I don't see doubling up the rails providing much benefit.....the more mathematically inclined may provide better advise.

One thing that 'may' help load/launch, would be to add some rollers alla the Nautley design.

 

[Hampton]

OK, what about this. In place of 1" Starboard (is that it?) use 1/2" - 3/4" Starboard in doubles with little wheels in between. What kind of wheels? Skateboard? Luggage rollers? Where do you get your Starboard?

EDIT: Instead of a double bracket at the base, I could use a single, thicker bracket/hinge with double boards on either side, then wheels at the peak and on the stern part. Man, I wish the manufacturers of these things had semi-affordable prices.

http://www.omniwheel.com/plastic-wheels.htm

 

[HavnFunYet?]

The Weaver Lever for the engine is a godsend...it is the easiest way to have the motor attached to the dinghy while underway that I have ever experienced. Easy to deploy and easy to engage. Be sure to take a look at what they have to offer.

 

[osd9]

Johh:

I didn't use starboard, I used the white composite 'plastic' stuff you buy at Home Depot. It was like $35 for a 12' length. There should be enough to make three dingy davits.

You may want to customize the mount a bit in an effort to extend and lower the davit for your higher platform. Something like this 'very' rough drawing....

I had actually made an alternate drawing to extend my davits utilizing two weaver receivers on each davit. However, it works great just the way it is for my application.

 

[Converse48]

I didn't use starboard, I used the white composite 'plastic' stuff you buy at Home Depot. It was like $35 for a 12' length.

Dom, that's brilliant... I've used that stuff at home (got it at Lowe's) but never thought about its potential marine applications. Starboard is outrageously expensive, this stuff seems like a good alternative. I mean plastic is plastic, right?