| Re: Nacra not righted
[Re: DennisMe]
#236465 08/18/11 03:33 PM 08/18/11 03:33 PM |
Joined: Jul 2005 Posts: 267 Ocean Springs, MS Capt_Cardiac
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Posts: 267 Ocean Springs, MS | Goose, I'm gonna put on the breaks and he'll fly right by...
Capt Cardiac Ocean Springs Yacht Club Sailor Nacra20 - Flight of Ideas #5 | | | Re: Nacra not righted
[Re: Capt_Cardiac]
#236472 08/18/11 04:24 PM 08/18/11 04:24 PM |
Joined: Jun 2001 Posts: 12,310 South Carolina Jake
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Posts: 12,310 South Carolina | Goose, I'm gonna put on the breaks and he'll fly right by... Ted and I have recently being quoting a lot of top gun lately...including that one. That would be hilarious.
Jake Kohl | | | Re: Nacra not righted
[Re: Baltic]
#236502 08/19/11 03:36 AM 08/19/11 03:36 AM |
Joined: May 2006 Posts: 1,383 Kingston SE South Australia JeffS
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Posts: 1,383 Kingston SE South Australia | As an experiment try facing your boat directly into wind on the beach without any main sheet on, now tighten the downhaul and see what happens, you maybe surprised. Mine becomes like a cat on a hot roof, bouncing around all over the place.
Any idea why this is the case? Pulling the downhaul should flatten the sail, reducing the camber. I think it depends on what shape your sail takes when you pull the downhaul on. With really light wind, not enough to give the sail shape on my Taipan 5.7 I pulled the downhaul on hard until it pulled the sail into shape and it would look like it was full of wind and not flop around, that way I could use the little puffs. So if the downhaul is still on hard in a capsize you may still get lift from the sail as your trying to right the boat but unfortunately it is sucking the sail back to the water. When you leave the downhaul on when on the beach the front of the sail has shape so the wind latches on but then goes around into the loose cloth and flaps the sail around.
Jeff Southall Current boats Nacra 5.8 1703 Animal Scanning Services Nacra 5.8 1667 Ram Raider Nacra 18 Square Arrow 1576
| | | Re: Nacra not righted
[Re: DennisMe]
#236523 08/19/11 09:20 AM 08/19/11 09:20 AM |
Joined: Feb 2009 Posts: 678 Palm Beach County TheManShed
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Posts: 678 Palm Beach County | I use to right my 5.2 by leaving the dagger boards extended and standing on the ends of them, jib usually still sheeted in and the main loose. In light winds you can leave the main sheet tight as long as you have the sheet in your hand. Of course I was much younger back then, in good shape at 5' 11" @ 190 lbs. I was always flying the hulls it was just about the best thrill and a great boat to single hand for my size.
Mike Shappell www.themanshed.comTMS-20 Builder G-Cat 5.7 - Current Boat NACRA 5.2 - early 70's | | | Re: Nacra not righted
[Re: Baltic]
#236526 08/19/11 11:32 AM 08/19/11 11:32 AM |
Joined: Jan 2004 Posts: 330 srm
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Posts: 330 | As an experiment try facing your boat directly into wind on the beach without any main sheet on, now tighten the downhaul and see what happens, you maybe surprised. Mine becomes like a cat on a hot roof, bouncing around all over the place.
Any idea why this is the case? Pulling the downhaul should flatten the sail, reducing the camber. Because when the downhaul is completely off, there is no camber in the sail. The sail material is allowed to relax and align itself to the wind, especially along the leading edge. Once you pull on the downhaul, you are forcing shape into the sail and so the sail can never actually align itself to the wind, therefore it can never go fully into "neutral". You crank on the downhaul to reduce sail power while underway, but whenever you want to park, you should let off the downhaul completely (so there is no tension along the leading edge of the sail). sm | | | Re: Nacra not righted
[Re: srm]
#236578 08/21/11 05:22 AM 08/21/11 05:22 AM |
Joined: Nov 2005 Posts: 246 Kiel, Germany Baltic
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Posts: 246 Kiel, Germany | Because when the downhaul is completely off, there is no camber in the sail. The sail material is allowed to relax and align itself to the wind, especially along the leading edge. Once you pull on the downhaul, you are forcing shape into the sail and so the sail can never actually align itself to the wind, therefore it can never go fully into "neutral".
You crank on the downhaul to reduce sail power while underway, but whenever you want to park, you should let off the downhaul completely (so there is no tension along the leading edge of the sail).
sm This is a very comprehensible explanation - addressing both the righting issue and parking at the beach. Thanks!
F18: C2 / A-Cat: Minelli
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