On Mon, 25 Feb 2008 07:50:00 +0700, Bruce in Bangkok
wrote:

On Sun, 24 Feb 2008 16:56:59 -0400, wrote:


"cavelamb himself" wrote in message
...
Bruce in Bangkok wrote:


It is a scow and pretty wide, have a look at:
http://www.bateau.com/proddetail.php?prod=D5

which is what I used as a model when I designed mine.

The boat is built of 1/8" ply and glassed inside and out with the
lightest cloth I can get. The bow and stern seats are flotation
chambers. The center thwart is not boxed in like the D5 to save
weight, and I made the seat tops from 1/8" ply with a "honeycomb" made
from 3/4" wide strips of ply on the bottom side. This makes the seats
stiff enough to sit or stand on and they are still lighter then
thicker ply.

I have a "Y" shaped sling that attaches to the corners of the transom
and the bow and handle the dinghy with the spinnaker pole lift and use
a boat hook to push it out so it doesn't rub on the topsides.

I'm in Bangkok at the moment and the working drawings are in Phuket
but I can probably scare up the offsets somewhere and email them if
your address is any good.


Bruce-in-Bangkok
(Note:remove underscores from address for reply)


I saw that on on the net and was immediately intrigued.
A very practical looking dink.

1/8" ply? Golly Bruce, that is pretty light construction.

I'm going to guess at about 55 pounds?
(Even 1.5 ounce deck cloth adds noticible weight)

If you have a chance I'd like to see the offsets.
This one could prove to be a good project.

Remove the X from earthlink for the correct address.


Richard


1/8" ply? That is light construction.
Yes it is. What I have used is 0.185" thick Meranti plywood.

Once the layouts have been done and the parts all cut out and labelled.

A coat of two parts epoxy is applied on each part individually and allows to
dry. Then the parts are assembled (dry) according to the drawing using the
stitching method. Afterward, the assembly is validated and corrected, as
needed it. After that, the epoxy fillets are applied with fibreglass tape
and let to dry.

Subsequently, a second coat to of two parts epoxy is applied inside out.
Before painting (for UV protection), a third and fourth coasts of epoxy is
applied. As you can see, the construction is light and strong. The
hardwood gunwales and keel also add to the stiffness of the boat

Not really. It is 1/6" ply glassed both inside and outside. If you are
using four coats of epoxy, inside and outside, the weight is likely
much the same - depending or course how thick you apply the epoxy.


Bruce-in-Bangkok
(Note:remove underscores
from address for reply)


must have hit the wrong key - should read i"It is 1/8"....."


Bruce-in-Bangkok
(Note:remove underscores
from address for reply)