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iGRF View Drop Down
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    Posted: 05 Apr 13 at 4:24pm
I'd sold it before that came out but why? 7.4 is pathetic, how is it I can compete with a 9.5 holding it in my bare hands, an 8.5 is a change down sail, why should I have to have a 7.4 that girls and small children use to windsurf race with?

Why, somebody tell me why that is, sensibly now it's an honest question, why can someone my weight happily cope with an 8.5 on a sailboard but not on a dinghy?

If the answer isn't that they are better designed and more fit for purpose?

Edited by iGRF - 05 Apr 13 at 4:25pm
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pondmonkey View Drop Down
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Posts: 2202 		Post Options Post Options   Quote pondmonkey Quote  Post ReplyReply Direct Link To This Post Posted: 05 Apr 13 at 4:36pm
because it's more efficient?   8M is the max allowed on a Moth...
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Posts: 116 		Post Options Post Options   Quote robin34024 Quote  Post ReplyReply Direct Link To This Post Posted: 05 Apr 13 at 4:42pm
Windsurfing rigs, granted are probably higher tech than those on dinghies, but the sails are so much flatter, and doesn't the top third or so just bend off downwind in the gusts? besides, all the power generated in a dinghy is transferred straight into the hull, generating only sideways and forwards forces when split into vector quantities, unlike on a windsurfer where there is a significant upwards component and not such a great sideways component if my understanding is correct... which really is quite a big if :/
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Posts: 116 		Post Options Post Options   Quote robin34024 Quote  Post ReplyReply Direct Link To This Post Posted: 05 Apr 13 at 4:45pm
plus, since the rig is not rigidly attatched to the board, you have far more leverage against the sail, since you are leaning against the force far closer to the centre of effort of the sails than in a dinghy.
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fab100 View Drop Down
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Posts: 1005 		Post Options Post Options   Quote fab100 Quote  Post ReplyReply Direct Link To This Post Posted: 05 Apr 13 at 4:52pm
Originally posted by iGRF

I'd sold it before that came out but why? 7.4 is pathetic, how is it I can compete with a 9.5 holding it in my bare hands, an 8.5 is a change down sail, why should I have to have a 7.4 that girls and small children use to windsurf race with?

Why, somebody tell me why that is, sensibly now it's an honest question, why can someone my weight happily cope with an 8.5 on a sailboard but not on a dinghy?

If the answer isn't that they are better designed and more fit for purpose?

Come on, think about it. 

You keep telling us we don't understand the physics of forces, moments and vectors but you cannot work this one out?? You can't have it both ways Graeme. You may think you can, but you can't. Either withdraw all the silly arguments about apparent wind or work it out and explain this one to us. It ain't hard and you've already been given most of the answer.
Great book for Club Sailors here
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AlexM View Drop Down
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Posts: 857 		Post Options Post Options   Quote AlexM Quote  Post ReplyReply Direct Link To This Post Posted: 05 Apr 13 at 4:56pm
How heavy are you?
You come across like the character Tyrion Lannister.
I think the rigs have quite a broad range, smaller 75-92 and bigger 95-115

Edited by AlexM - 05 Apr 13 at 5:00pm
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Do Different View Drop Down
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Posts: 1312 		Post Options Post Options   Quote Do Different Quote  Post ReplyReply Direct Link To This Post Posted: 05 Apr 13 at 5:47pm
Come on GRF, make your mind up, either you are talking sense or being an agent of provocation.
Your contributions on the Sails & Sailmakers thread were both refreshing and informative.
Now it's back to Boards are 21st Century and Dinghies are Stone Age.
You know very well they very different animals having to work to totally different parameters.
Of course a board can carry a big rig. As said it's flatter and having to drive a fraction of the mass & drag of a dinghy. Opposite and equal forces an' all that. A low resistance craft will need ...................., hang you know all this!!! or did when you did O Level physics back at school. Well I did O levels, I guess you did.    
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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: 07 Apr 13 at 5:11pm
Which is why dingies need to be lighter so they're not so heavy to drive and have reduced wetted area so they don't have so much drag, then perhaps I will be able to handle a big sail..
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Medway Maniac View Drop Down
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Posts: 2788 		Post Options Post Options   Quote Medway Maniac Quote  Post ReplyReply Direct Link To This Post Posted: 07 Apr 13 at 6:11pm
But the key to reducing wetted area is to reduce the waterline beam, then the boat becomes too tippy (vide Moth).  The fatties don't have this problem - they can have a good sail area/wetted area ratio for light airs merely by being able to 'support' a load more sail area.  You can, as a lightweight, increase the sail area by using sitting out aids à la IC, but then again you are into handling problems.

The answer would be a 15 foot version of the tunnel hull scow Moth, and that was the tragedy of watching your V2 folly unfold.  If you'd only stretched one of these up to a decent waterline length, kept the weight minimal and put a Halo rig on it, you'd have had a viable, easy s'hander with a PY of maybe 920, even without the kite:
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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: 07 Apr 13 at 6:30pm
Well I was after an offshore fast planing thing and didn't appreciate just how heavy it would end up, and the planned waterline on the Original spec was the same as a Contender, things just didn't work out exactly as they should have, but then the chances of getting it right first time....

If I can find someone a little closer to home that i can oversee what they're up to, I won't get it wrong next time.
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