Poor performance with 150 jenny

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Tim Gillespie

In my first season with my Oday 25 I bought all new sails, including a 100% jib and a 150 jenny. I discovered that with the jenny I could not point higher than 60 degrees off the wind. With my 100 I was able to point about 45 degrees off the wind. Perhaps this is a universal condition, but shouldn't I be able to point higher with my jenny? The telltales on the jenny suggested that she was pulling properly, but if I pull up higher it luffs and slows the boat. I'd like to hear others on this and their experience with different sails.
 
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lnranch

Upwind

You may need to move your track inboard. Also make sure you Genoa block is set correctly. You should be able to point the same as with your jib. Good Luck
 
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Joe Barrett

Genoa Track

When I installed a 155% Genoa on my O'Day 272 I had to lengthen the genoa track by two feet to bring the genoa car back to a proper postion. It sounds like your car is too far forward and you either don't have it back far enough or you can't bring it back far enough to point. You may need to add length to the genoa track to make it work.
 
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Tim Gillespie

Genoa car OK, I think

Attached is a photo of the boat under sail. As you can see, I think the track is as far back as it needs to be, but perhaps there's too much belly in the sail.
 

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Rich

Maybe Sail is cut wrong for boat

Tim, From your photo, it looks like the block for your sheet is as far aft as possible for your boat--which still may not be far aft enough for the cut of this particular sail. I.e., the clew is too high and the foot is too long. I think you could still have a 150% genoa but with a shorter foot and lower clew which would theoretically allow you to get the sail much tighter without having your jib car hanging off the stern rail. The trade-off here is that the leech of the sail will be longer, bringing it closer to your deck and cutting down on visibility from the helm forward (i.e., more of a "deck sweeper"). I had the same problem on my O'Day 22 with a supposedly stock 155% genoa--it was cut with the clew about 2 to 3 feet off the deck and a foot length that would have forced me to have a jib car about 2 to 3 feet behind the stern of my boat in order to sheet that sail properly. (Maybe I could have given it to you since your boat is 3 feet longer???) I then measured myself for a better fit, effectively bringing the clew down about 2 feet and forward about two feet, lengthening the leech and bring the sail's foot closer to the deck. I can't see around the sail very easily (that's what crew are for) but I can now keep my jib car much more forward and still get a decent sheeting angle on the sail, allowing me to point where I could not with the other sail. Talk to your sailmaker about this and see what he says. Rich s/v TIME BANDIT O'Day 22
 
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Vic

Wait a minute ... If you have to attach

the gib sheet to the stern cleat ... what do you have to do to attach a gennaker? And since when does a 150 clear the life lines up wind? Great photo raises lots of questions. Vic
 
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