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#1
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Cat's Meow is sailng with a new mainsail this year. The sail has a separate
grommet for a downhaul (Cunningham) in additional to the tack. Given I'm working with a single winch on the mast, does it make more sense to use the winch for the main halyard and tighten the downhaul by hand, or raise the main by hand and use the winch for the downhaul? I tried raising the main by hand yesterday in a relatively* brisk wind, ~15 knots, and it didn't seem like the main got raised enough. *Relative to the usual Long Island Sound light air. S/V Cat's Meow http://www.catsmeow.org |
#2
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Real boats have a sliding gooseneck so one can raise the
mainsail to the top black line and allow the boom to slide up for ease of uphauling without a winch. Once the halyard is made fast, tension along the luff can easily be made by drawing down on the boom using the mainsheet so the downhaul can be cleated off. Cunningham cringles and tackle are something that are totally unnecessary on any boat with a sliding gooseneck. This is but another advantage of a boat that is set up to cruise instead of to race. Cunningham gear is just a way to get around the rules of racing and as such should be used only on racing yachts. "Gerard Weatherby" wrote in message ... Cat's Meow is sailng with a new mainsail this year. The sail has a separate grommet for a downhaul (Cunningham) in additional to the tack. Given I'm working with a single winch on the mast, does it make more sense to use the winch for the main halyard and tighten the downhaul by hand, or raise the main by hand and use the winch for the downhaul? I tried raising the main by hand yesterday in a relatively* brisk wind, ~15 knots, and it didn't seem like the main got raised enough. *Relative to the usual Long Island Sound light air. S/V Cat's Meow http://www.catsmeow.org |
#3
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"Simple Simon" wrote in message
... Once the halyard is made fast, tension along the luff can easily be made by drawing down on the boom using the mainsheet so the downhaul can be cleated off. Would I be right in thinking that the kicking strap could be used to pull a sliding gooseneck downwards? -- Wally I demand rigidly-defined areas of uncertainty! www.art-gallery.myby.co.uk |
#4
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I don't see why not.
"Wally" wrote in message ... Would I be right in thinking that the kicking strap could be used to pull a sliding gooseneck downwards? |
#5
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"Simple Simon" wrote in message news:yqGdnfnqrp-
I don't see why not. Cheers. My boat (not in the water yet) has one and I've been wondering if perhaps another bit was missing. (The previous owner seemed to think that a tiller and a kicking strap were unneccesary luxuries.) -- Wally I demand rigidly-defined areas of uncertainty! www.art-gallery.myby.co.uk |
#6
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On Thu, 17 Jul 2003 18:42:40 -0400, "Simple Simon"
wrote: Real boats have a sliding gooseneck so one can raise the mainsail to the top black line and allow the boom to slide up for ease of uphauling without a winch. Once the halyard is made fast, tension along the luff can easily be made by drawing down on the boom using the mainsheet so the downhaul can be cleated off. Cunningham cringles and tackle are something that are totally unnecessary on any boat with a sliding gooseneck. This is but another advantage of a boat that is set up to cruise instead of to race. Cunningham gear is just a way to get around the rules of racing and as such should be used only on racing yachts. Real "little" boats use a sliding goosenecks and downhauls, real big boats use riveted goosenecks and cunninghams. When I race a San Juan 21 we use both a downhaul for rough sail shape and a cunningham to fine tune. The larger boats I sail have riveted goosenecks and cunninghams. "Gerard Weatherby" wrote in message ... Cat's Meow is sailng with a new mainsail this year. The sail has a separate grommet for a downhaul (Cunningham) in additional to the tack. Given I'm working with a single winch on the mast, does it make more sense to use the winch for the main halyard and tighten the downhaul by hand, or raise the main by hand and use the winch for the downhaul? I tried raising the main by hand yesterday in a relatively* brisk wind, ~15 knots, and it didn't seem like the main got raised enough. *Relative to the usual Long Island Sound light air. S/V Cat's Meow http://www.catsmeow.org Raise your main (with a winch if necessary) until you get a loose fold along the luff. Use some sort of a purchase system (a block and tackle with a cam cleat) for the cunningham to adjust the position of the draft of your main. Attach a hook to the cunningham cringle and the other end to the base of your mast. Harden the cunningham to move the draft forward, ease the cunningham to move the draft aft. Briggs is probably doing a rollover. Jack |
#7
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Real boats-schmeel boats. a fixed gooseneck properly attached to the
mast is mechanically stronger than the sliding gooseneck on the track. And there is a weight savings by not needing all the heavy gooseneck track and heavy gooseneck. Having a fixed gooseneck, means that you don't have to worry about the forward end of of the boom damaging heads, fingers or other body parts. A second benefit derived from the fixed gooseneck rig is that the modern "kicker boomvang" can be used rather than a preventer vang lead from the rail up to the boom. If you have older style rig with sliding gooseneck, I would seek the opinion of a skilled spar-maker/worker before discarding the sliding gooseneck rig. Some masts and booms will need additional re-enforcement before installing that fixed gooseneck. About the right amount of cunningham tension.------ On most of the boats that I race on, the main halyard controls the top 2/3 of the luff and sail shape. The Cunningham controls the bottom 2/3 of the luff and sail shape. I didn't make a typo. Even though it doesn't make sense, that is exactly what is happening on most boats that have a good racing main. The halyard affects both the luff and the leach; it changes the draft location and effect a slight flattening or fullness at the top of the sail. The cunningham effects the bottom luff tension and bottom section of the sail. It doesn't have a major effect on the foot shape or outhaul tension. How much cunningham or main halyard to use or not use is part of the art of the sailor. I own a Sonar. Our fractional rig is very different from the old masthead IOR & IMS rigs that I used to race every weekend. I also race an AERODYNE 38. It has a huge, full-battened main with a tremendous roach and a 105% jib. we are learning that the Etchells and Sonars that some of the crew race are more closely related to that 38' offshore boat than the masthead IOR and IMS boats the owner used to race. Makes for interesting learning experiences. If you have a "cruisier" main, you will see less effect as you try to tweak the various controls. The sail has been built to have a wider range of acceptable tensions. it will be less responsive to minute changes in outhaul and main luff(halyard & cunningham) tensions. But it will be easier to trim and make fast. good luck and have fun. Jack Dale wrote: On Thu, 17 Jul 2003 18:42:40 -0400, "Simple Simon" wrote: Real boats have a sliding gooseneck so one can raise the mainsail to the top black line and allow the boom to slide up for ease of uphauling without a winch. Once the halyard is made fast, tension along the luff can easily be made by drawing down on the boom using the mainsheet so the downhaul can be cleated off. Cunningham cringles and tackle are something that are totally unnecessary on any boat with a sliding gooseneck. This is but another advantage of a boat that is set up to cruise instead of to race. Cunningham gear is just a way to get around the rules of racing and as such should be used only on racing yachts. Real "little" boats use a sliding goosenecks and downhauls, real big boats use riveted goosenecks and cunninghams. When I race a San Juan 21 we use both a downhaul for rough sail shape and a cunningham to fine tune. The larger boats I sail have riveted goosenecks and cunninghams. "Gerard Weatherby" wrote in message ... Cat's Meow is sailng with a new mainsail this year. The sail has a separate grommet for a downhaul (Cunningham) in additional to the tack. Given I'm working with a single winch on the mast, does it make more sense to use the winch for the main halyard and tighten the downhaul by hand, or raise the main by hand and use the winch for the downhaul? I tried raising the main by hand yesterday in a relatively* brisk wind, ~15 knots, and it didn't seem like the main got raised enough. *Relative to the usual Long Island Sound light air. S/V Cat's Meow http://www.catsmeow.org Raise your main (with a winch if necessary) until you get a loose fold along the luff. Use some sort of a purchase system (a block and tackle with a cam cleat) for the cunningham to adjust the position of the draft of your main. Attach a hook to the cunningham cringle and the other end to the base of your mast. Harden the cunningham to move the draft forward, ease the cunningham to move the draft aft. Briggs is probably doing a rollover. Jack |
#8
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Gerard,
I hate that damned wench on the mast. I don't know what size sail you have but I have a 35 ft hoist and I see no reason to use that (SAIL DESTROYER) to raise that Main. I sail with a female crew and they will continually use that wench. I keep telling them that if they stretch that main that they will buy me a new sail but if I'm not watching them they are sure to put those couple of extra turns on there. Now, I'm not putting all the blame on the girls. My male crew member are stronger than the girls and they put a couple of turns on the wench and haul in up by hand, usually more than tight enough but they have to grab the handle an over tighten The say just snugging it up. Yeah right! With the first tack the upper batten has trouble coming across without inverting Now, with that off my chest, I've mounted the cunningham hook at the gooseneck. When I need cunningham, I have a line thru the cunningham with a loop to the hook and the other side thru a block and back to a jam cleat on the boom at the main sheet traveler. The main sheet trimmer can haul it in by hand. I watch the upper batten. If he draws it in past parallel to the boom we ease the main halyard. If we can't get the batten into position with main sheet trim and backstay tenson, I allow main halyard adjustment with the wench, Sorry, a long winded answer to setting up cunningham with single wench. Ole Thom |
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