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List classes of boat for sale |
Mast Head T Foil? |
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Jack Sparrow 
Really should get out more 
Joined: 08 Feb 05 Location: United Kingdom Online Status: Offline Posts: 2965 |
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 Topic: Mast Head T Foil?Posted: 29 Oct 14 at 1:12pm |
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If you are going to do anything like that. Don't put winglets on the mast, put a fence on the sail head (would only really work on a square head). Although this will be illegal in just about all class rules.
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Medway Maniac
Really should get out more
Joined: 13 May 05 Location: United Kingdom Online Status: Offline Posts: 2788 |
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Posted: 29 Oct 14 at 1:24pm |
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Sorry, I thought that was what people had in mind. I can't see the masthead idea working at all. Then again:
I am often amazed how little effect the huge bags our local 2k's use have on upwind performance. I'd have expected them to be real speed-killers, but i've seen bag-men beat equally competent non-bag men on many occasions.
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iiitick
Far too distracted from work 
Joined: 04 Jun 14 Location: gb Online Status: Offline Posts: 478 |
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Posted: 29 Oct 14 at 5:17pm |
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Actually it would be quite easy to set up a test rig and look into this. Broom pole, bed sheet, cardboard, hairdryer and Havana Cigar.
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Medway Maniac
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Joined: 13 May 05 Location: United Kingdom Online Status: Offline Posts: 2788 |
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Posted: 29 Oct 14 at 5:35pm |
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What are you on today, tick? Can you sue Grumph for messing with your head?
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iiitick
Far too distracted from work
Joined: 04 Jun 14 Location: gb Online Status: Offline Posts: 478 |
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Posted: 29 Oct 14 at 6:08pm |
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Ah, now. Just recovering back home from a very pleasant lunch in nice Peak District hotel, relaxing and thinking up 'bright' ideas.
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I luv Wight
Really should get out more
Joined: 28 Jan 05 Location: United Kingdom Online Status: Offline Posts: 628 |
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Posted: 29 Oct 14 at 6:09pm |
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I was thinking of doing this on the moth a few years ago - with a triangular ply board to make an end plate, the sail square head being about the right angle.
OK a longer mast does the same thing, but class rules limit the length of the mast and luff length. There is ( or was ) an allowance of 10% of the sail area that isn't measured if it's at 90 degrees to the mast, so it could have worked as an addon - free area :-). But moths now need lower drag , not more power. |
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iiitick
Far too distracted from work
Joined: 04 Jun 14 Location: gb Online Status: Offline Posts: 478 |
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Posted: 29 Oct 14 at 6:12pm |
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So the search is on for lower drag rigs....how did the wing sail go in the end?
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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: 29 Oct 14 at 8:15pm |
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Well if it was marketed as a mast head float?
Would it be legal 
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Medway Maniac
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Joined: 13 May 05 Location: United Kingdom Online Status: Offline Posts: 2788 |
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Posted: 29 Oct 14 at 8:27pm |
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Provided it actually functioned as a masthead float, it would be tricky to ban it without banning something that many find very necessary in some modern designs. That would set the cat among the pigeons
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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: 29 Oct 14 at 8:46pm |
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Well fundamentally it's kind of a cooler more efficient mast head float and was how it evolved in my thinking.
Originally I was going to run an old kite leading edge up the mast, then I got to thinking about extending it, then the T foil thought process came into play, you know how these things go... |
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