Technical protest |
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423zero ![]() Really should get out more ![]() Joined: 08 Jan 15 Location: United Kingdom Online Status: Offline Posts: 2539 |
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Rockatross, don't think it's class legal, so it's a blade you can buy that will fit a Merlin stock.
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Robert
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gbrspratt ![]() Posting king ![]() Joined: 26 Sep 11 Location: Felixstowe Online Status: Offline Posts: 169 |
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They come like that from one of the manufacturers if you want it. |
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423zero ![]() Really should get out more ![]() Joined: 08 Jan 15 Location: United Kingdom Online Status: Offline Posts: 2539 |
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Obviously it's added to blade, so it's a contrivance. You can't buy a Merlin rudder with a fence.
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Robert
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fudheid ![]() Far too distracted from work ![]() ![]() Joined: 21 Apr 11 Location: 51.53 N 01.28 E Online Status: Offline Posts: 235 |
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Put simply, the question still remains.... To me the fence is a contrivance?
So the rules state: Daggerboards, bilgeboards, double rudders, winged rudders and similar contrivances are prohibited. Is the fence a similar contrivance? |
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Cheers you
only me from over the sea...... |
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423zero ![]() Really should get out more ![]() Joined: 08 Jan 15 Location: United Kingdom Online Status: Offline Posts: 2539 |
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Lost train of thoughts now
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Robert
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gbrspratt ![]() Posting king ![]() Joined: 26 Sep 11 Location: Felixstowe Online Status: Offline Posts: 169 |
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Why do you need to draw a line? As you say they all improve performance? I don't really get your point. The point about the fence is how it fits in the rules?
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423zero ![]() Really should get out more ![]() Joined: 08 Jan 15 Location: United Kingdom Online Status: Offline Posts: 2539 |
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Fence is a performance enhancing device like,
Self bailers, they enable you to empty boat quicker than someone without. Mast head float, stops you turtling, quicker recovery. Duck under, stops you throttling yourself with mainsheet. Hiking straps, allows you to lean further without falling in. etc etc etc where do you draw the line ? |
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Robert
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Sam.Spoons ![]() Really should get out more ![]() Joined: 07 Mar 12 Location: Manchester UK Online Status: Offline Posts: 2960 |
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Pedant alert (sorry) ![]() Ventilation, not cavitation, cavitation doesn't happen at dinghy speeds (not even, I think, foiling Moth speeds).
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Spice 346 "Flat Broke"
Blaze 671 "supersonic soap dish" |
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JimC ![]() Really should get out more ![]() ![]() Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6358 |
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In practical terms there will be a gap between a fence that is bigger than it needs be to do the job, and a foil that's too small and too low aspect ratio to do anything significant. The difference will be obvious. But in any case any control to accurately change the angle of incidence of the foil on the water would be a dead giveaway. |
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Noah ![]() Really should get out more ![]() ![]() Joined: 29 Dec 04 Location: United Kingdom Online Status: Offline Posts: 587 |
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Sorry, 432Zero, I disagree. If the purpose of the fence is reduce cavitation it is, by definition a performance enhancement by virtue of the fact that the boat is easier to steer / more stable at high speed.
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