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Weight equalisation |
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iGRF
Really should get out more
Joined: 07 Mar 11 Location: Hythe Online Status: Offline Posts: 6499 |
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Topic: Weight equalisationPosted: 02 Jan 22 at 5:42pm |
Surely the angle of the wire? A low hook gives a narrow angle, a high hook would give a bigger angle, need to do a drawing. ![]() Edited by iGRF - 02 Jan 22 at 6:05pm |
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ohFFsake
Far too distracted from work
Joined: 04 Sep 08 Location: United Kingdom Online Status: Offline Posts: 219 |
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Posted: 02 Jan 22 at 6:52pm |
Your drawing is a thing of beauty, and in itself perhaps justifies the existence of this entire thread. But it also demonstrates that in terms of mechanics it makes no difference where the hook attaches to the sailor, except in terms of their comfort.
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tink
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Joined: 23 Jan 16 Location: North Hants Online Status: Offline Posts: 789 |
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Posted: 02 Jan 22 at 7:16pm |
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Hook height (on the body i.e. crew always horizontal) makes no difference what so ever on a dinghy, the CoG of the crew will be the same. It is different on a windsurfer as the mast is canting to windward.
Edited by tink - 02 Jan 22 at 7:20pm |
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Tink
https://tinkboats.com http://proasail.blogspot.com |
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Posted: 02 Jan 22 at 8:46pm |
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What did you use to draw that?
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iGRF
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Joined: 07 Mar 11 Location: Hythe Online Status: Offline Posts: 6499 |
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Posted: 02 Jan 22 at 9:27pm |
I spent a lot of time drawing it on a special computer programme you should keep a copy it'll prabably be worth lots of money when I'm gone.
As to the physics of it, last time I tried to pull a lever, it certainly helped by standing further away from it than right under it. I'm not proposing this, I'm simply asking the question. If not, why not. If that were a static boat in the boat park and you wanted to pull it over, surely you would use the wire and walk further away, would it not be easier? Surely it's why tall sailors have more righting moment than short sailors because they extend the base of the triangle. Therefore it must make sense to extend the hook as far up the body as possible if you're short of that body length? Edited by iGRF - 02 Jan 22 at 9:33pm |
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Paramedic
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Joined: 27 Jan 06 Location: United Kingdom Online Status: Offline Posts: 929 |
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Posted: 02 Jan 22 at 9:34pm |
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It has to make a difference.
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Rupert
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Joined: 11 Aug 04 Location: Whitefriars sc Online Status: Offline Posts: 8956 |
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Posted: 02 Jan 22 at 9:53pm |
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Maybe just tie it round the neck?
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Firefly 2324, Puffin 229, Minisail 3446 Mirror 70686
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Do Different
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Joined: 26 Jan 12 Location: North Online Status: Offline Posts: 1312 |
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Posted: 02 Jan 22 at 10:53pm |
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Gawd bless you Tink for even trying.
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423zero
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Joined: 08 Jan 15 Location: United Kingdom Online Status: Offline Posts: 3420 |
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Posted: 02 Jan 22 at 11:41pm |
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Imagine lying on a plank with no wire, you would still have same effect.
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Robert
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Grumpycat
Far too distracted from work
Joined: 29 Sep 20 Online Status: Offline Posts: 497 |
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Posted: 02 Jan 22 at 11:42pm |
Love your logic,Rupert
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