The reason lighter cats are safer?

[Chotu]

Are we sure it’s infusion?

[CatNewBee]

Originally Posted by Chotu

Are we sure it’s infusion?

Lagoon, Fountaine Pajot definitely.

[Chotu]

Originally Posted by CatNewBee

Lagoon, Fountaine Pajot definitely.

Ok, because some of the posts above, while also cryptic, wouldn’t be able to be done in a single infusion.

[CatNewBee]

https://youtu.be/5Im5DC2vu4Q

https://youtube.com/watch?v=5Im5DC2vu4Q

[arsenelupiga]

Originally Posted by CatNewBee

https://youtu.be/5Im5DC2vu4Q

impressive innovation !

[arsenelupiga]

Here you go, here they made our L 400.

If one is really interested about weight, last minute shows basically empty lagoons and their waterline which should well correspond to EMPTY weight. Then yo measure distance and can get your weight withiut these useless lifts.

https://youtu.be/y-_aNM8nYPg

[Sand crab]

I’m trying to figure out the process. Is it one infused vinylester layer, the bagging etc. is stripped away, the core attached, more glass attached then infused again with polyester? Or can they do this in one shot?

[44'cruisingcat]

Originally Posted by CatNewBee

Well, below the waterline, solid GRP. Above the waterline Balsa blocks cored. All infusion bagged and Vinyl-Ester soaked, on the outside is gelcoat and then antifouling (in my case Coppercoat - epoxy based and a good osmosis barrier.

All furniture is marine plywood, most is glued and bolted but some of this can squeek, especially panels, bulkhead decoration panels and frames, they are only screwed on for easy removal and tend to become noisy. Many structural enforcements / bulkheads are marine ply. Some are laminated, some are glued on. Deck and hulls are glued and screwed to each other.

What do you think my boat is made of?

Sounds like it's wood, mostly. I guess that explains the creaks.

[CatNewBee]

Originally Posted by Sand crab

I’m trying to figure out the process. Is it one infused vinylester layer, the bagging etc. is stripped away, the core attached, more glass attached then infused again with polyester? Or can they do this in one shot?

It is only one shot. Everything layed up and fixed, then bagged and vacuum infused.

This is mass production, every additional step costs time and money.

[Chotu]

Originally Posted by CatNewBee

It is only one shot. Everything layed up and fixed, then bagged and vacuum infused.

This is mass production, every additional step costs time and money.

So we are saying they have an infusion for the vinylester on the outside (below the gelcoat spray) AND a polyester infusion going at the same time? 2 different feeds of 2 different resins, in 2 different parts of the laminate,, separated by only by balsa?

How is the vinylester and polyester kept from traveling through the balsa and mixing? Balsa has air gaps through it because it’s cut into blocks or similar to take the curves. These act as raceways during an infusion process and fill with resin.

Source: I infused an entire 50ft catamaran. Including some balsa parts such as parts of the deck where hardware was going. The rest was corecell infused. This concept doesn’t seem possible without a water(resin) proof layer separating the vinylester and polyester. Balsa isn’t resin proof.

[sailjumanji]

Originally Posted by arsenelupiga

Here you go, here they made our L 400.



If one is really interested about weight, last minute shows basically empty lagoons and their waterline which should well correspond to EMPTY weight. Then yo measure distance and can get your weight withiut these useless lifts.



https://youtu.be/y-_aNM8nYPg

Except the empty weight requires a useless lift. And what stage of finish is empty weight? Most times before mast and rigging put on, because weight taken before the boat leaves the shed. Other times it's just the hull and bulkheads before any equipment even installed. It's very inconsistent, based on my discussion with builders.

[CatNewBee]

Originally Posted by Chotu

So we are saying they have an infusion for the vinylester on the outside (below the gelcoat spray) AND a polyester infusion going at the same time? 2 different feeds of 2 different resins, in 2 different parts of the laminate,, separated by only by balsa?

How is the vinylester and polyester kept from traveling through the balsa and mixing? Balsa has air gaps through it because it’s cut into blocks or similar to take the curves. These act as raceways during an infusion process and fill with resin.

Source: I infused an entire 50ft catamaran. Including some balsa parts such as parts of the deck where hardware was going. The rest was corecell infused. This concept doesn’t seem possible without a water(resin) proof layer separating the vinylester and polyester. Balsa isn’t resin proof.

Nope. Hulls Vinylester, Deck structures and heads Polyester. No mixing

[arsenelupiga]

Originally Posted by sailjumanji

Except the empty weight requires a useless lift. And what stage of finish is empty weight? Most times before mast and rigging put on, because weight taken before the boat leaves the shed. Other times it's just the hull and bulkheads before any equipment even installed. It's very inconsistent, based on my discussion with builders.

For Lagoons that use EC methodology, empty weight is boat with minimum factory options but able to sail/motor. that is the one you see on pic at around 3:30.

Light weight, this is one that you read about is as above boat able to sail and motor + 1/2 filled water tanks, 1/2 filled fuel tanks, 1/2 filled holding tanks.

For Lagoon 400 empty is 10.0T, lightweight is 10.6T. Full is 15.34T.

So EMPTY boat 10.0 T can be loaded up to 5.34T. One on pic would sink close to where antifoul ends if loaded 5.3T which is around 20 cm.

[mikereed100]

Originally Posted by Sand crab

So is the vinylester just sprayed on the mould and not infused into the glass?
How does Seawind do it?

I suspect so. Like a poor man's epoxy barrier coat. The advantage being that the vinylester would not require sanding before laying down the polyester.

[Sand crab]

So this older thread has a few posts about Lagoons having sprayed in vinylester on the exterior of the hills only. I imagine they could have gone all vinylester in the hull construction by now. Can someone point to data by Lagoon that says this is so?
https://www.cruisersforum.com/forums...ns-121282.html