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iGRF View Drop Down
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Posts: 6499 		Post Options Post Options   Quote iGRF Quote  Post ReplyReply Direct Link To This Post Topic: R Speculation
    Posted: 25 Oct 13 at 7:20pm
Originally posted by yellowwelly

had a woman carrying the hull like a surfboard- .


Right up your street then? Save for some flowery graphics designed to attract italian sheep (in joke referring to YW's dubious windsurf brand preference)
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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: 25 Oct 13 at 7:24pm
Originally posted by yellowwelly

Pretty sure the Hoot early publicity had a woman carrying the hull like a surfboard- attach wings, foils and rig on the beach...

Narrower hull, portability designed in from the start, think it has a wheel built in. Its narrower and lighter too- seem to remember 25kg hull
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yellowwelly View Drop Down
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Posts: 2003 		Post Options Post Options   Quote yellowwelly Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 13 at 7:47pm
Originally posted by iGRF

Originally posted by yellowwelly

had a woman carrying the hull like a surfboard- .


Right up your street then? Save for some flowery graphics designed to attract italian sheep (in joke referring to YW's dubious windsurf brand preference)


I no longer have an Italian sheep, and the only flowery board ever owned came from your warehouse!
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alstorer View Drop Down
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Posts: 2899 		Post Options Post Options   Quote alstorer Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 13 at 9:42pm
Originally posted by Daniel Holman


Carbon content is a funny one - never worked out in w/surf masts if a 10% carbon mast was actually (by volume) say 10% carbon, say 40% glass 50% resin, or the 10% part referred to the percentage of the fibers that were carbon ass opposed to glass - in the above instance 20% carbon (1/5 of the fibres carbon)
I guess 100% carbonmasts are, even with posh prepreg, only up to 65% carbon as the rest is resin. 
we make life tricky. In pre-preg product descriptions we will quote a fibre area weight (ie grams per square metre) and a resin content that is a % of the total areal weight.

When it comes to cured laminates however, the measure we use and quote is Fibre Volume Fraction. So 55% carbon would mean that 55% of the total volume is fibre. Note that this is more than 55% of the weight, as carbon fibre is around 1.8g/cm^3 whilst resin is less dense at about 1.2-1.4g/cm^3 (depending on compostion, and if you've got lots of air in it it'll be rather less!)

We measure this on glass products by burning the resin away. On carbon, that would destroy the fibres, so we carefully remove the resin using boiling concentrated nitric acid. In a microwave

However, I'd guess that if it's a mixed-fibre product that's being talked about, then a 10% carbon would mean that 10% of the total dry fibre weight is carbon.

I realise that tech talk is tragic at this time on a Friday, but I do need to be up early, so I'm not out at the pub...
-_
Al
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yellowwelly View Drop Down
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Posts: 2003 		Post Options Post Options   Quote yellowwelly Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 13 at 10:18pm
No- that's great Al, cheers
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Oatsandbeans View Drop Down
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Posts: 382 		Post Options Post Options   Quote Oatsandbeans Quote  Post ReplyReply Direct Link To This Post Posted: 26 Oct 13 at 5:22pm
We gave up with nitric acid digestion ( I like the microwave idea though), years ago -the numbers were often rubbish and who wants to boil up nitric acid /peroxide mixes? We use microscopy and image analysis for getting Resin, fibre and void contents. You get more sensible numbers and you can get a much better idea of the laminate quality from the section micrographs.
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laser193713 View Drop Down
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Posts: 889 		Post Options Post Options   Quote laser193713 Quote  Post ReplyReply Direct Link To This Post Posted: 28 Oct 13 at 9:23am
What? Still no pictures? Where are people getting this "angular cross between a vareo and 700" info from?
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iitick View Drop Down
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Posts: 392 		Post Options Post Options   Quote iitick Quote  Post ReplyReply Direct Link To This Post Posted: 28 Oct 13 at 9:32am
We need an Edward Snowdon.
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yellowwelly View Drop Down
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Posts: 2003 		Post Options Post Options   Quote yellowwelly Quote  Post ReplyReply Direct Link To This Post Posted: 28 Oct 13 at 3:21pm
I am reliably informed that any pictures that may have been submitted to the Guardian are very out of date anyway.... the ones I have seen are without the sail on it, which to me are pretty useless, as an RS Hull is pretty much an RS Hull.... blend the 700 with  the Vareo, thinking 21st Century Laser and you'd arrive at a similar concept drawing.
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iGRF View Drop Down
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Posts: 6499 		Post Options Post Options   Quote iGRF Quote  Post ReplyReply Direct Link To This Post Posted: 28 Oct 13 at 3:30pm
I blame david yacht for dozing off in his Solo instead of rolling cameras..
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