Dingy on a 560

Update on the swim platform mod:

Before the 2010 season started, I removed the "skirt" and adjusted the swimplatform to counter the "droop". There are threaded rods underneath that can be adjusted for this purpose.

I had also wanted to have the platform raised, however I had difficulty locating the materials last year and ran out of time before launch. So renewed the effort this winter and located what I was looking for - 3" x 3" square aluminum tube, with 1/4" thick walls.

IMG_0789.jpg


I had the marina do the installation and here's a couple of shots of it installed between the hyraulic forks and the swimplatform.

IMG_0775.jpg


I think it will be plenty strong, however I'll keep an eye on it though the summer. I bought a couple of extra pieces, so I could double up on each fork, however I don't want to add weight needlessly.

IMG_0777.jpg


Now just lookiung forward getting back into the water in a couple of weeks!

Paul
 
Are you putting a 23 foot center console on the back......That looks more engineered than the "Big Dig" up here in Boston
 
Paul, Just curious.. does the platform have any flexing due to removing the skirt? I would think that it acts as a perimeter support beam, however I see in the pictures the plaform has framing support members running parallel with the transom.
 
Hi Cod,
There was definitely nothing structural about that skirt - all cosmetic. I was pretty light fiberglass with small screws keeping it in place.

Paul
 
Paul, I do not know much about platforms, but what I see is that you...just turned 6" of support beams into 3"s... not good for a 700 lb dinghy. I would put in the second set, it's not that much weight added, it's not like it's steel and I'd use 316 Stainless fasteners.
 
5" down to 3" actually. It's a done deal and I'll update as to how it works out. I'm confident it'll be fine.

Paul
 
Here's the swim platform post modification.

SwimPlatformNow.jpg



I'm pleased with the result as the swim platform is also pretty close to even with the step heading into the cockpit. If I raised it any more, I'd have problems loading the dingy with the platform fully submerged.

Paul
 
We raised platform on our 580 Sedan Bridge by two inches toward bow and raised the back by 7 inches. Underway platform is now level and no longer scoops water

Regards

Richard
 
I would recommend that you go full width with the spacer piece to avoid stress. This will spread the force.

Regards

Richard
 

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