Comments on: Boat Building; Carbon/Nomex International Moth

By: knutfheifer

knutfheifer — Tue, 19 May 2009 00:00:23 +0000

I am going to puke, there is no need for that sort of thing on you tube

By: mapiababy

mapiababy — Tue, 17 Feb 2009 15:27:24 +0000

how much money cost to make that

By: chickenpayback

chickenpayback — Fri, 26 Dec 2008 14:04:37 +0000

From Bill B,
Porosity is a problem. The best approach is to spray an ample coat of primer in the mold before starting the layup. Porosity will still exist, but it will be behind the impermeable primer. If the outer skin were bagged and cured in the mold before the nomex was added, the porosity problem would go away. Assuming you did neither of these things, the problem can still be solved by squegeeing three extremely thin coats of thickened resin over the entire surface.

By: chickenpayback

chickenpayback — Fri, 26 Dec 2008 13:58:47 +0000

Bill

From Bill B,

The carbon outer layer in the carbon inner layer were wet out on a separate table before placing in the female mold. The thin kevlar layer on the outer skin between the carbon and nomex was placed in the mold dry and wet out as required in place. By wetting the inner carbon skin on a table it only needed to be positioned on the nomex core and bagged down.

By: SKIFFSHOP

SKIFFSHOP — Mon, 22 Dec 2008 18:02:34 +0000

hi guys good effort – I was looking into wetlaying with nomex but gave up after these two problems (assuming you had a 1 core 1 layup.
A) Laying the resin in the final layers ontop of the nomex, without filling up the holes. Or prepregnating them off the job without them draining into the cells!? What did you do here.

B) With 1/core/1 layup you will get small holes in the laminate or will be porous. With will also fill up the nomex cells. What was your solution??

Cheers

By: thebunny31

thebunny31 — Thu, 03 Jul 2008 00:55:07 +0000

Great video. I’ve been thinking of getting into sailing and this looks like the most exciting way. How much did it cost to build the boat and where did you find the specs to follow?

By: jabousquet

jabousquet — Thu, 20 Mar 2008 14:53:41 +0000

jabousquet | March 20, 2008
The Nomex is 1/4″ thick, 3″16″ cell, overexpanded. Procured from Eurocomposites. The Nomex core is flexible enough on the long axis to roll into a tube about 8 inches in diameter. Bill’s half-hull molds allow the composite to be made in one lay-up. And the pieces are easily extracted from the mold! I suspect that laying up a hull would be much more difficult with a one-piece hull mold, both in speed required to get everything in before the resin kicks & in removal.

By: martianhop

martianhop — Mon, 17 Mar 2008 22:26:00 +0000

I just got around to weighing the pieces with an accurate scale and found the hull parts shown, trimmed and taped together weigh 19.4 lb. Adding bulkheads, transom and trunk brings it up to 20.9 lb. Filler and paint to go.

By: chickenpayback

chickenpayback — Sun, 16 Mar 2008 01:20:08 +0000

Hull with no wings weighs around 10 kg (22 lbs.)

By: bgulari

bgulari — Sat, 15 Mar 2008 13:57:30 +0000

i am amazed you can lay the nomex in and the inner skin in one layup good on you