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A new class of dinghy?
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Chris 249 View Drop Down
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Posts: 2041 		Post Options Post Options   Quote Chris 249 Quote  Post ReplyReply Direct Link To This Post Topic: A new class of dinghy?
    Posted: 26 Sep 18 at 9:29am
Originally posted by H2

Originally posted by Rupert

You'd need a good headline!

Or a bunch of old Sun page 3...

I know of one boat with centrefolds glassed in just under the inspection port.
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Post Options Post Options   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 26 Sep 18 at 9:56am
33 pages and the answer is paper mache rotomoulds 

Edited by mozzy - 26 Sep 18 at 9:56am
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PeterG View Drop Down
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Posts: 823 		Post Options Post Options   Quote PeterG Quote  Post ReplyReply Direct Link To This Post Posted: 26 Sep 18 at 10:37am
I had great fun making a papier mache model yacht somewhere over half a century ago. It was rubbish, but I've always liked the idea!

Rotomoulding it sounds fun - you would need a waterproof binder that melted at reasonable temperatures. Perhaps it could be the perfect way of recycling old newpapers and candle stubs? Just don't leave your boat out in the sun too long. And probably not quite as strong as epoxy or plastic, sadly.
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Daniel Holman View Drop Down
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Posts: 997 		Post Options Post Options   Quote Daniel Holman Quote  Post ReplyReply Direct Link To This Post Posted: 26 Sep 18 at 11:52am
I laminated a collage into the deck fwd of mast on punk boat ie d zero prototype. Not structural far from it in fact so would probably cause delamination and failure in a load bearing area.
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Posts: 245 		Post Options Post Options   Quote KazRob Quote  Post ReplyReply Direct Link To This Post Posted: 26 Sep 18 at 11:53am
In the same vein as using newspaper, there's a very well known Danish OK with postage stamps below a clear finish. Stunning but how much work must that have been!
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Posts: 145 		Post Options Post Options   Quote NickM99 Quote  Post ReplyReply Direct Link To This Post Posted: 26 Sep 18 at 12:12pm
I am amazed how in high tech industries using exotic materials, e.g. Rolls Royce aero engines, engineers can use just software (and massive computing power) accurately to work out likely performance, variables, material behaviour and everything else without needing to actually build and test a new engine to destruction in the design phase.

If that sort of computing power could be applied to dinghy design we would have some great new boats.  But then they would cost the same as an airliner engine....
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Posts: 6499 		Post Options Post Options   Quote iGRF Quote  Post ReplyReply Direct Link To This Post Posted: 26 Sep 18 at 1:38pm
Originally posted by KazRob

In the same vein as using newspaper, there's a very well known Danish OK with postage stamps below a clear finish. Stunning but how much work must that have been!


Ha that's a good idea... having trouble? Mail the boat to the finish line.
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Posts: 750 		Post Options Post Options   Quote H2 Quote  Post ReplyReply Direct Link To This Post Posted: 26 Sep 18 at 2:44pm
That dutch OK looks amazing!
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Daniel Holman View Drop Down
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Posts: 997 		Post Options Post Options   Quote Daniel Holman Quote  Post ReplyReply Direct Link To This Post Posted: 26 Sep 18 at 3:08pm
Originally posted by NickM99

I am amazed how in high tech industries using exotic materials, e.g. Rolls Royce aero engines, engineers can use just software (and massive computing power) accurately to work out likely performance, variables, material behaviour and everything else without needing to actually build and test a new engine to destruction in the design phase.
If that sort of computing power could be applied to dinghy design we would have some great new boats.  But then they would cost the same as an airliner engine....


Dinghies are far from high tech industry and you are better served by hands on trial and error with most things.
Quite a lot of analysis happens on bigger boats now as the cost of experimentation is greater than cost of analysis and optimisation.
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Posts: 267 		Post Options Post Options   Quote Oinks Quote  Post ReplyReply Direct Link To This Post Posted: 26 Sep 18 at 8:20pm
Laser Nationals c.1990 guy turns up from Brazil with his hull in a paisley pattern. Wouldn't take offers, and there were plenty!. Apparently - from what I can remember - it was wallpaper under a clear gelcoat. Wonder where that one went!
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