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Debunking Dodgy Sailing Theories |
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Roger
Really should get out more Joined: 23 Mar 04 Location: Somerset Online Status: Offline Posts: 524 |
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Topic: Debunking Dodgy Sailing Theories Posted: 14 Nov 11 at 5:21pm |
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I thought the question was with regards to the theory that heeling a boat to windward on the beat would make it point higher! at least for the same speed anyway. I seem to recall some thinking the hull shape in the water made a difference when heeled to windward, and others believed the rig performed better when heeled to windward, hence canting rigs to windward in Melins (recently) and Flying Dutchman (many years ago) There is of course always the theory that what you think is flat isnt, and you should always feel that the rig is pointing to windward, but thats different. |
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Rupert
Really should get out more Joined: 11 Aug 04 Location: Whitefriars sc Online Status: Offline Posts: 8956 |
Post Options Quote Reply Posted: 14 Nov 11 at 5:38pm | |
One of the Rooster vids goes into it in some detail. Easier to see it happening than to explain, at least for me...
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Firefly 2324, Puffin 229, Minisail 3446 Mirror 70686
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themeaningoflife
Far too distracted from work Joined: 06 May 11 Location: Essex/ Kent Online Status: Offline Posts: 212 |
Post Options Quote Reply Posted: 14 Nov 11 at 6:30pm | |
Plus if a gust hits when the boat is heeled to windward, as it comes flat it is in the best position to accelerate from and thus more speed and height!
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SoggyBadger
Really should get out more Joined: 26 Oct 10 Location: The Wild Wood Online Status: Offline Posts: 552 |
Post Options Quote Reply Posted: 14 Nov 11 at 7:08pm | |
Kevin Haynes was doing that in the 70s, which is recent on a geological scale of course |
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Best wishes from deep in the woods
SB |
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zippyRN
Far too distracted from work Joined: 14 Sep 06 Online Status: Offline Posts: 437 |
Post Options Quote Reply Posted: 22 Dec 11 at 11:44pm | |
exactly keeping flow attached , it also depends, as you say on the rig - with the extremes of the laser / topper style shroudless una rig at one end and the all singing all dancing 27 pieces of string of a merlin or somesuch at the other as to what influence the outhaul and the cunningham has - basically by what opposes it's actions
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zippyRN
Far too distracted from work Joined: 14 Sep 06 Online Status: Offline Posts: 437 |
Post Options Quote Reply Posted: 22 Dec 11 at 11:46pm | |
(some) pond sailors will sail if there's one wind ripple per square metre of water's surface or less, where in tidal waters you 'd just be being pushed around by the tide
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zippyRN
Far too distracted from work Joined: 14 Sep 06 Online Status: Offline Posts: 437 |
Post Options Quote Reply Posted: 22 Dec 11 at 11:48pm | |
exactly ...
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JohnW
Really should get out more Joined: 17 Jul 07 Location: United Kingdom Online Status: Offline Posts: 552 |
Post Options Quote Reply Posted: 23 Dec 11 at 11:01am | |
That's blowing a hoolie on our lake! The other week the race was run (by popular request) when the only ripples were caused by fish jumping and ducks swimming! (and it was foggy). I was glad I was on race duty that day. I dont recall how many boats had their clew outhaul on hard though. |
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Post Options Quote Reply Posted: 28 Dec 11 at 10:51pm | |
The rudder will always have drag, just like the centreboard. A light helm does not mean no drag, it just means it is better balanced. Edited by Peaky - 28 Dec 11 at 10:51pm |
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RS400atC
Really should get out more Joined: 04 Dec 08 Online Status: Offline Posts: 3011 |
Post Options Quote Reply Posted: 29 Dec 11 at 7:16pm | |
A rudder that is continuously providing lift to counteract weather helm will create more drag than one which is not. |
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