Who's building boats to the new rules

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pardo528
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Re: Who's building boats to the new rules

Post by pardo528 » Tue Jan 27, 2009 10:01 pm

Ditto - makes it look slick.

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MCR
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Re: Who's building boats to the new rules

Post by MCR » Tue Feb 10, 2009 4:22 am

This is the design I'm basing my model on. I say basing it on because I'm finding it hard to truly model the effects of tortured ply in the world of CAD software. I should have some model photos by next week.
Jethrow IC.jpg
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Jethrow
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wee mcp
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Re: Who's building boats to the new rules

Post by wee mcp » Fri Feb 13, 2009 11:24 am

MCR wrote:This is the design I'm basing my model on. I say basing it on because I'm finding it hard to truly model the effects of tortured ply in the world of CAD software. I should have some model photos by next week.
Jethrow IC.jpg
Hi Jethrow,
I totally agree, even using a one fifth scale model of Steve's ply design and laser scanning the sections into Rhino V.4 and lofting, the programme refuses to believe that you can develop the shape into a flat.
I guess we're at the cutting edge of technology here, so at least until someone can write code that can cope with these compound shapes, we'll need to play and model things - it's more fun that way, I think.

Looking forward to seeing the photos

Ian McP
GBR 253
"Sometimes its a boat, sometimes more of an accident .. It all depends" - Pooh Bear
IC GBR305

jimc
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Re: Who's building boats to the new rules

Post by jimc » Fri Feb 13, 2009 1:05 pm

wee mcp wrote:the programme refuses to believe that you can develop the shape into a flat.
I guess its the fact that the material is not quite dimensionally stable and thus can be persuaded to bend into three dimensions that confuses the program... After all its not called tortured for nothing!

Phil Stevenson
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Re: Who's building boats to the new rules

Post by Phil Stevenson » Sun Feb 15, 2009 12:31 am

We have been building impossible shaped hulls from tortured ply for at least 40 years and the computer nerds can still not cope. I hope John Mazzotti feels honoured.
Chronology AFI can remember:
Beginning with the Unicorn ACat, UK John M about 1965
Tornado 1967
Many ACats and other cats from 60s to 80s and the plastic cat revelution.
I did several 12ft skiffs in the 1970s and an 18 about 1975
Then moths, some wide ones in the 70s and lots of skinny ones from 1999 to 2005.
And finally the IC in 2006.
Best design method I have found is building models from cardboard at first and then thin ply.
Design perfection is achieved, not when there is nothing else to add but when there is nothing else which can be taken away.
http://philscanoes.blogspot.com/

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MCR
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Re: Who's building boats to the new rules

Post by MCR » Sun Feb 15, 2009 2:52 am

Here are the photo's of the model. I knew as soon as I had cut it out and had a bit of a bend that the ply was too stiff. I could only get 1.5mm and it's obviously too stiff. I increased the size of the model to try and compensate but it's not going to work. At least the cuts all came together and look about right. The hobby store guy said the factory that makes modeling ply (in Finland?) burnt down so there are supply problems right now. I think I'll have to go down stevo's cardboard route untill I can find some more. There's a company in Queensland that can mail order the stuff but they charge nearly as much for a 1200 x 300 sheet as I'm paying for my 2400 x 1200 gaboon. Oh well, hope these photos don't come out too big.
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Jethrow
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Phil Robin
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Re: Who's building boats to the new rules

Post by Phil Robin » Sun Feb 15, 2009 7:57 pm

The annual dinghy exhibition is to be held March 7/8 at Alexandra Palace, London. Its a great opportunity to publicise ICs built to the new development rule. On our stand will be Alan Powell's new boat Asbo, and also an AC.
I'm putting together some publicity material together to illustrate the new boats that have been built or are in build around the world. Would much appreciate if all the new rule IC sailors could email me a few images of their creation, plus details of boat number/name, designer, builder, owner etc. and perhaps a few words setting out the design philosophy. Please email any info to me at philip.robin@kingsturge.com.
Thanks : :)
Phil
K 41 Conquest
GBR 328 Little Scarlet

Phil Stevenson
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Re: Who's building boats to the new rules

Post by Phil Stevenson » Mon Feb 16, 2009 8:10 am

Jethrow,
I have some more 0.8 ply and some models you might like to look at. From the pics I would say you seem to have excess cut away for the keel forward and consequently will get heaps more spring than you really need.
Call me and drop around one day, I have learnt from lots of past mistakes and might save you making the same ones again.
Phil S
Design perfection is achieved, not when there is nothing else to add but when there is nothing else which can be taken away.
http://philscanoes.blogspot.com/

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MCR
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Re: Who's building boats to the new rules

Post by MCR » Mon Feb 16, 2009 8:50 pm

Hi Phil

Yeah, I'd come to the same conclusion about the cut out in the bow. I was trying to use sailmaker's broadseaming theory to determine the amount bit it doesn't work out the same. I've emailed you about meeting and will call later. Thanks
Jethrow
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MCR
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Re: Who's building boats to the new rules

Post by MCR » Tue Feb 24, 2009 7:20 am

OK, with much thanks to Phil Stevo for helping out with the ply, I was able to build the first decent model of the new MCR. I'm 90% happy with how it turmed out, just needs a bit more work on the rockerline to get to where I want to be. Hopefully the real thing will start soon...
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Christian AUS
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Re: Who's building boats to the new rules

Post by Christian AUS » Sun Mar 29, 2009 6:55 am

The first of the 'flatpacks' get wet
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jimc
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Re: Who's building boats to the new rules

Post by jimc » Sun Mar 29, 2009 10:17 am

Good stuff... Here she is right way up [grin]
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Christian AUS
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Re: Who's building boats to the new rules

Post by Christian AUS » Mon May 18, 2009 8:52 pm

The MECHAR designed flatpack AUS31 finally gets some video footage
http://icflatpack.blogspot.com/2009/05/ ... iling.html

Mudman
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Re: Who's building boats to the new rules

Post by Mudman » Tue May 19, 2009 6:35 pm

Hi Christian,

How have you attached your gnav to the mast? The pic just crops it out. Is is a bespoke or bought fitting? Any chance of seeing?

Cheers,

David
"No easy way to be free..."
IC 206 sailing out of Brightlingsea

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Christian AUS
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Re: Who's building boats to the new rules

Post by Christian AUS » Tue May 19, 2009 7:21 pm

Mudman wrote:Hi Christian,

How have you attached your gnav to the mast? The pic just crops it out. Is is a bespoke or bought fitting? Any chance of seeing?

Cheers,

David
I used the Proctor Gooseneck fitting (just the bit that bolts onto the Mast) and made the inside of the vang strut into a receiving tube for it. I used the Proctor one as a local shop here had a bunch of 505 masts that were delivered damaged and they were doing good deals on the stripped off fittings.

Cheers

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