Quote:
Originally Posted by MatFromPoland
A) Any more details about "advanced hull"
B) "Boat Weight as Tested 2700 lbs" == 1225 kg. Trailer 400 kg so it looks like minimum GVW for trailer is 1600 kg 
Do you know real weight of 650 Open PRO ? |
A.) the hull deck joint is very different. It has the same captive joint that is used on the 750, 850, and NZO models. Basically, the deck is a male, and the hull is female. The deck is slightly smaller than the hull. So when the two pieces are mated (with the stringer setup inside), the deck sits inside the hull. Because of the way the joint is formed, it sees very little horizontal shearing stress.
With a sandwich style joint, it sees a LOT of horizontal shear, due to flexing as you bounce off waves, so you have to use a strong adhesive with some flexibility to ensure your hull/deck adhesive doesn't fail, and your fiberglass hull doesn't peel apart. Or, you can fiberglass over the the edge of the sandwich joint to add more tensile strength, but this takes a lot of time (cost) since it cannot be done in the mold...it has to be done in the open air, so there's a lot of sanding and polishing.
I believe the hull also uses a lot of vinylester resin and infusion processes? Not 100% on that though, that was "through the grapevine".
B.) I would not trust that weight. Usually, tweaks happen once boats go in to full production, and weight goes up and down..plus, since the number is so round, it's probably an engineering estimate anyways.
