2520XL Roof Mounted Davit ?

[Ludicrous40]

I'm considering the installation of a retractable davit from LDmarine (http://www.ldmarineproducts.com/products.html), and want to know more about the construction of the 2520 cabin roof before moving forward. This davit is installed horizontally with backing plates inside the cabin. The intended use would be as an aid to get a Giant Bluefin over the side, as well as hauling pots. Seems like a slick idea, but I don't want to peel the roof off my cabin trying to get a monster over the side.

Does anyone know the thickness of the roof (2003) as well as how it is mounted and/or secured to the sides of the cabin?

Comments? Concerns?

Thanks in advance

 

[DaleH]

Roof construction has changed, so I wouldn't guess, but would call the factory and talk to Eric.

I'd prefer a washboard-mounted davit that tied into the cabin bulkhead, see link below:

http://store.hamiltonmarine.com/browse. ... 34955.html

 

[Ludicrous40]

Thanks Dale,

Just spoke with Eric. The construction of the roof is a non-issue. Basically he said you would pull the boat over before peeling the roof.

The concerns that he expressed would apply to any davit, that being a capsizing risk given the sea conditions when trying to pull ~500 to 800lbs over the side with 4 guys also hanging on that same side. Valid point that everyone should think about in advance........

 

[HOTPURSUIT]

This is a core I took out of the top of my 2003 2520 when I installed a dorado ventilator. Hope it helps, Mike

 

[Ludicrous40]

Thanks Mike, So glad I found and joined this site!!

Eric described that there are two parts to the roof, and you can see them in your picture. The bottom section is fully integrated into the sides and cabin during installation. It is basically a one piece shell. The top section that overhangs is glued to the bottom section, but is also secured via the rails and other hardware that are bolted thru to the inside of the cabin. It's solid as long as you bolt thru with the appropriate backing plates.

Rob

 

[DaleH]

My concern wasn't for strength per se, but for mounting ease and placement. I'd rather have a gunwhale-mounted davit that would swing into the cockpit.

FWIW when I put on my roof-top out-riggah mounts, I drill 1/2" holes thru, wet them out w/ penetrating epoxy, then filled them completely with a thickened mix. Then drilled thru for the bolt hole needed.

That process should be used on any cored penetration ...

 

[Bryan 2530]

Interesting post, I was thinking about doing the same thing on mine the other day.

Lou makes some great stuff, talked to him a few times about various parts that will be on my next boat.

Post up some pics of your project, you may motivate me to install one on my Parker.

 

[Ludicrous40]

Hey Dale, just want to confirm.....

So you drill a 1/2" hole for the sole purpose of sealing, then drill the appropriate hole through the hardened sealing material? Such that you know the hole is completely sealed?

The swinging into the cockpit is a great point....

 

[DaleH]

So you drill a 1/2" hole for the sole purpose of sealing, then drill the appropriate hole through the hardened sealing material? Such that you know the hole is completely sealed?

Yes, that's it! Try the epoxy sample kit from Larry at Raka Epoxy, only $18 before shipping, see http://store.raka.com/epoxysamplekit.aspx.

The kit includes 12-ounces of their standard marine epoxy Resin 127 with fast 610 and slow 606 hardeners, a small sample of silica, micro-bubbles, and a sample of standard 6-ounce fiberglass.

Their mix is a std 2-parts resin to 1-part hardener, so no expen$ive pumps needed. I've used everything from bottle cap tin sizes to small cat food tins ...

 

[SPUDFL]

Search "Tunacious" in the 'Introduce yourself' forum to see how we solved the problem of lifting in tuna. It swings in over the deck so you can lay the tuna down gently onto the deck. Put the crew on the opposite side of the boat with the ropes to counter the weight of that thousand pounder.

 

[Ludicrous40]

Hey SPUDFL, That's a nice looking configuration. I'm assuming that the top portion is stored when not in use?

Did you get to lift any Tuna last year, or did you just get that done this past winter?

 

[SPUDFL]

Hey SPUDFL, That's a nice looking configuration. I'm assuming that the top portion is stored when not in use?

Did you get to lift any Tuna last year, or did you just get that done this past winter?

We did it this past winter after struggling to lift in tuna over the side last summer. Redmond Marine in Eliot, Me made it up for us. The top can be detached but is generally just secured in over the top. Noelle can make the whole unit detachable if desired but we opted not to as it really is not in the way of anything we do on our boat. Noelle has this style unit on his boat and lifted in an 800# tuna with it last summer with no problem. The 2520 makes for an easy installation with just a base ring mounted to the floor and 2 braces on the roof as shown in the photo. We are hoping to give it a workout very soon now. :lol:

 

[DaleH]

Here's that post with the pictures of their gin pole ...

viewtopic.php?f=15&t=12941&p=89394&hilit=Tunacious#p89394

 

[Ludicrous40]

Spudfl,

Does your 2520XL have the two molded steps in the forward corners of the cockpit. From your picture, it looks like the base of the pole would be attached on top of one of those steps. I'd show you a picture if my boat was home....

 

[Phil]

Here's mine mounted on the step and tied to the hardtop. I cut a piehole on the step to thru-bolt it with backing plate. It also allow me to run power cables to mount a 2000lb winch with wing nuts so I can remove it when not in use. You can buy these winches at Harbor Freight for about $80 which is 1/3 of the block & tackle. The wired remote allows me to lift the fish on the other side of the boat. The 3rd pic is a 700lb++ fish note the lean. I have a 23 dv so I don't think a 25 will have any problems lifting a 1000lb fish in calm seas. In rough seas, I would move all the weight to the otherside of the boat, cleat the tail as high as you can in the stern, then lift the head just high enough to clear the gunnels.

 

[SPUDFL]

:?:

Spudfl,

Does your 2520XL have the two molded steps in the forward corners of the cockpit. From your picture, it looks like the base of the pole would be attached on top of one of those steps. I'd show you a picture if my boat was home....

We have the standard cab so we don't have the steps. The base is connected directly to the floor. The nice thing is the setup does not effect our ability to go forward. Phil, nice setup and nice tuna. Shows how well the setup will work. We have considered the winch setup but thought the salt would screw up the winch too quickly. How long have you had the winch in use? I have several of those winches kicking around the farm and I guess you are right. For the price, if it only lasted a season one wouldn't be out much. May have to reconsider.

 

[Phil]

It's about 7 years old. I keep it in the cabin and mount it when I'm ready to pull the fish. All it takes is 2 wing nuts then plug in the quick-connect power plug. The single block is already on the cable so all I have to do is snap the caribiner to the head of the ginpole. When I'm ready to head in to port, I break it down and store it back in the cabin. It replaces the strength of 4 men and follows your directions to a T...

 

[Ludicrous40]

Phil,

That's a nice setup. Did you make the pole, or have it made?

It's pretty obvious now that the horizontal davit isn't going to work (or more correctly I'd never be happy with it). It doesn't offer enough height, and would force me to pull up the front of the fish adjacent to the cabin and not the cockpit.......a cluster for sure!

Thanks for all the feedback, I really appreciate it.

Rob

 

[Phil]

My buddy Mark welded it up for me. I bought the 4" alum pipe and he welded a base and bracket for the hardtop to the pipe out of some scrap stock. Any decent welding shop can fab one up in a couple of hours.

 

[ctown67]

Wow, i love that pic of the tuna. That is fantastic. I guess i can rest now that i worry about my buddies staying in the tower in rough seas.