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  #11  
Old 05-22-2009
bkw bkw is offline
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the reason i asked about the barber hauler was because of back winding main when on a beat. i suggested easy the genoa a couple of inches but that was rejected. they want everything strapped so tight. we dont practice so theres no way to see if their would be any gains in doing that. pointing vrs speed. how do you know unless you try?
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Old 05-22-2009
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A little bit of luff in the main is OK. During the race, checking the knotmeter helps determine the effects of changes to the sail trim.

Jack
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  #13  
Old 05-22-2009
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yes i am trying to get the skipper used to carrying a bubble in the main. he and one other crew member dont like it. as long as its not flogging i think the air is still attached. you see it all the time on the top boats. i have to over sheet to stop the bubble from luffing. thus the barber hauler idea. yes i am always watching true wind speed and boat speed.
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Old 05-22-2009
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A "speed bump' in the main luff while beating is perfectly acceptable, ugly is fast as we sometimes say!!
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Old 05-22-2009
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BTW - one other thing. It seems to me that hardening the main to remove the luffing might introduce some weather helm, that will turn the rudder into a brake.

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Old 06-06-2009
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Let me see if I can explain this such that it makes sense .

A barber hauler is used when sailing off the wind, to bring the foresail's clew closer to the centerline of the boat and close the leech, while still allowing the sail to be full, providing more power.

Jim
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Old 07-22-2010
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This is an old thread but I just found it so others might. Keep the jib in tight and let the main have a bubble in it. When on the wind, sail to the jib and use the main to set the heel of the boat. As they say, the jib is the engine and the main the throttle. The barberhauler is for off the wind. Some people use an inhauler to pull the jib inboard for on the wind, which would make the bubble issue worse. Another point, maximum lift occurs with a smooth sail. Drag increases as a sail is sheeted in. Maximum forward force occurs when the sail is off of maximum lift so that the drag is reduced. You can picture that in that lift decreases when the sail is sheeted in or let out. Thus, right at maximum lift there is no change in forward force for small changes in sheet position. As long as the decrease due to sheeting out is less than the decrease in drag, it is a good tradeoff. Then you go more than that, you lose more lift than you gain in reduced drag and that is where you should stop. This will produce a small bubble in the main. Thus, the small bubble is fast. In addition, with enough wind you start to have significant side slip. This calls for more bubble and ultimately a flogging main. Cheers.
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Old 07-23-2010
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Good post, Allene - and welcome to Sailnet.

..though I, for one, am not convinced that "the small bubble is fast" idea is the BEST anyone can do.

From what I've read and am seeing down-under, many crack racing yachts are going away from overlapping genoas (that cause the bubble in the fist place) back to almost self-tacking jibs - the theory being that, for anything other than really light winds, a smaller headsail will allow ALL the main to work - not just 90% of it - whilst getting a better rating.

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Old 07-23-2010
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Quote:
Originally Posted by bkw View Post
the reason i asked about the barber hauler was because of back winding main when on a beat. i suggested easy the genoa a couple of inches but that was rejected. they want everything strapped so tight. we dont practice so theres no way to see if their would be any gains in doing that. pointing vrs speed. how do you know unless you try?
thanks for the replies


Don't use a barber hauler going to weather. The increase in sheeting angle will kill your boat's ability to point. What wind velocity and sails are you having this issue? #1 or #2 gen? What kind of boat? Lot's of variables for sure. What's going on with main trim? Fractional rig? Mast head?

Ask the main trimmer to try putting on a little vang... sometimes that will get rid of the bubble quickly. Whether it's fast or not, that's what VMG will tell you.

Last edited by puddinlegs; 07-23-2010 at 02:29 AM.
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Old 07-23-2010
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I think yous guys are going in the wrong direction...try a definition first.

Barber Hauler, A line attached to the jib or jib sheet, used to adjust the angle of sheeting by pulling the sheet toward the centerline of the boat.

Note that it pulls the sheet toward the center of the boat, not outward.

To move the jib lead outward you need an outside track and an outside sheet or just put out a pole to leeward. The picture above shows just such an outside lead.
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