best heel angle upwind with short wing???

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Vic

I'm trying to find the best "most effective" heel angle up wind with a wing keel ... currently operating 15 to 25 degrees ... and 20 seems to lift best ... anyone else have input? I'm running a 3ft wing on a 272. Vic
 
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Justin - O'day Owners' Web

Heel

Vic - The ideal angle will probably varry somewhat from boat to boat because the load onboard will affect how much of the hull is in the water. The keel probably works best when degrees from vertical over degrees from horizontal is equal to the ratio of vetical surface area over horizontal area. The hull goes through the water most efficiently dead upright. The best angle comes when those ideals are balanced. 20 degrees sounds reasonable. Justin - O'day Owners' Web
 
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Tom Ehmke

Vic, sounds about right to me.

I like to sail my 272 with 10-15 degrees of heel, but there are times when 20 degrees works well. I normally adjust the sail area and attack angle to keep it comfortable. We'd probably both agree that the 272 is a little tender until she reaches about 15-20 degrees of heel. My headsail is a 155% roller-furled jenny and the main is fully-battened with a moderate roach. With the headsail full, she wants to round up at 20 degrees of heel which usually means a pretty good breeze. Normally I crank in some of the jenny first and move the mainsail track to leeward to bring her back on her feet. If it is still uncomfortable I go to the first set of reef points on the main and take up some more of the jenny. Never have used the second set of reef points. A steady 20 degrees of heel is exhiliarating with an experienced crew and a steady wind. If it is gusty or if I'm single-handing, I go the safe route and reduce sail to straighten her up to 10-15 degrees. Do I sail any faster at 20 degrees of heel? Probably not, but it feels so goooooood!! Whaddayathink? Tom
 
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Vic

Well, I am sure of one thing...

at 30 degrees we seem to slide slip a lot and and lower couse made good. I will have to plug this into the GPS to see if I can find the point when the wing stalls. 15-20 degrees seems pretty tame ... I seem to be ok at 20-25 with a 135. the funny part is that up wind in light air ... the 15-20 degrees is really noticeable to point adequately ... forget that fin mentality about sailing upright. With the 135 the weather helm is not too bad at 25 but then it starts to really kick in as soon as you go over that. thanks for the response. Vic
 
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