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Foil lift / tracking |
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Steve411
Really should get out more Joined: 09 Sep 08 Location: Cheddar, Somerset, England Online Status: Offline Posts: 705 |
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Topic: Foil lift / tracking Posted: 15 Feb 13 at 10:31am |
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I think 6 knots may be a bit on the high side, perhaps 5? Fully powered up and hiked I get 6 to 6.5 knots upwind in the 300 (according to the GPS). However, this speed doesn't increase much as the wind increases, though possibly does a bit in a Solo??
Windward heel can be devastating upwind in a 300 as maxi says.
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sargesail
Really should get out more Joined: 14 Jan 06 Location: United Kingdom Online Status: Offline Posts: 1459 |
Post Options Quote Reply Posted: 15 Feb 13 at 10:38am | |
Steve - remember that winters at BCYC when it was just you and me doing it? Good days!
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pondmonkey
Really should get out more Joined: 12 Aug 11 Online Status: Offline Posts: 2202 |
Post Options Quote Reply Posted: 15 Feb 13 at 10:42am | |
oi oi... no 300 love-in thanks Matt... salt into the wounds n' all that.
OKay so six knots optimistic... I'll have to take a GPS out a recalibrate my perceptions. Of course I will retire from any club results I achieve as I will be technically out of class by carrying it ;-)
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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: 15 Feb 13 at 11:21am | |
A Solo for all its charms cannot plane upwind. To achieve a displacement sailing speed of 6 knots it would need to have a waterline length of at least 20 feet. In reality its maximum displacement speed is going to be in the region of 4.5 knots.
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Best wishes from deep in the woods
SB |
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pondmonkey
Really should get out more Joined: 12 Aug 11 Online Status: Offline Posts: 2202 |
Post Options Quote Reply Posted: 15 Feb 13 at 11:34am | |
thanks... as I said it was guess, what I'm interested in doing is replicating the feeling of being sucked to windward.... there's a friday afternoon gag for Mr Holman there too, oops, and another one.
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Daniel Holman
Really should get out more Joined: 17 Nov 08 Online Status: Offline Posts: 997 |
Post Options Quote Reply Posted: 15 Feb 13 at 12:12pm | |
Just bear off to 85 deg TWA and you might coax 6 knots out whilsts still technically achieving some upwind progress. I would bet that you like to "reach around" |
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Daniel Holman
Really should get out more Joined: 17 Nov 08 Online Status: Offline Posts: 997 |
Post Options Quote Reply Posted: 15 Feb 13 at 12:15pm | |
Steve is a good orator but questionable physicist/engineer. By definition a boat without a gybing board or trim tab must make leeway in order to generate sideforce to counter righting moment. There are a lot of boats for which ww heel is good in the right circumstances, in a few ways enhancing the efficiency of the foils. This means that the boat may achieve the same sideforce (countering the same righting moment) at a slightly lower leeway angle, meaning less induced drag and seeming to climb up on other boats. |
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pondmonkey
Really should get out more Joined: 12 Aug 11 Online Status: Offline Posts: 2202 |
Post Options Quote Reply Posted: 15 Feb 13 at 12:16pm | |
in a pink solo, it would be rude not to... 'god damn common courtesy' according to my drill sergeant.
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Daniel Holman
Really should get out more Joined: 17 Nov 08 Online Status: Offline Posts: 997 |
Post Options Quote Reply Posted: 15 Feb 13 at 12:18pm | |
?????? Cue lilting guitar music... Summer turned to autumn, ah thought ah'd never see him agin. Then one day I was stroking the steer in the yard an there he was, sunlight glinting on his mus - tache. Ah grabbed him by the waistcoat an we musta rolled around in the mud for good 2 hours. Ah gripped him tight to me an said to him: "Don't you ever leave me boy!" |
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Steve411
Really should get out more Joined: 09 Sep 08 Location: Cheddar, Somerset, England Online Status: Offline Posts: 705 |
Post Options Quote Reply Posted: 15 Feb 13 at 3:06pm | |
You were there?
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