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| Downhaul kit http://www.hobie.com/au/en/forums/viewtopic.php?f=9&t=11853 |
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| Author: | spinfly [ Fri Feb 27, 2009 9:19 am ] |
| Post subject: | Downhaul kit |
Hi, am wondering what the downhaul does how it helps i quess pros and cons.Normally when i go out i just pull the rope down to where its tight but not loose and cleat it.What is the difference with adjusting it.dont know thats why im asking the expert would i need a downhaul kit.This would be for a H14T.Any help would be appreciated. |
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| Author: | mmiller [ Fri Feb 27, 2009 9:43 am ] |
| Post subject: | |
A sail is like an airplane wing, but is flexible... The downhaul (and outhaul) control the shape of the foil that gives it lift, or in the case of a sailboat... forward power. The position of the deepest part of the draft is critical to highest performance. Without the controls, the sail will still work, but not to the efficiency and power that is possible. Generally, you pull the downhaul to remove horizontal wrinkles in the sail. The harder you sheet, the more downhaul required to keep the material smooth. Performance wise, you have to measure the draft and try to place the deepest portion not further aft than around 45% aft of the mast or ahead of mid sail. As the wind comes up the air forces the draft further aft, so more downhaul pulls it forward. Lots of downhaul can also cause the top of the sail to twist off and de-power. This is a common way to de-power in high winds. Outhaul is also increased as the wind increases. The outhaul helps to flatten the sail. Higher wind more of both... lighter wind... less. So... do you need a kit? Sure makes the adjustments easier, but the standard 3:1 certainly works. I would get one. |
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| Author: | spinfly [ Mon Mar 02, 2009 7:38 pm ] |
| Post subject: | |
Thank you much that sheds alot of light on it,just thought that it kept the gooseneck assy from from coming up and out.Again Thank you. |
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