Jib flapping in higher winds

[chris_gee]

Wouldn't any headstay sag be the same on both tacks?

[jjablonowski]

Is the genoa equipped with luff foam? Mayhaps, when partially furled (reefed) without luff foam or luff rope, it's too baggy and thus hard to control.

[tomandchris]

Mark,

Not sure what you are sailing, but in any case a 150-160% genoa rolled to 100% is not going to give you any decent sail shape. It will also be very different dependent on point of sail because of the roll.

On SF Bay, in the winds that occur there, you probably need to invest in a smaller headsail. Talk to a sail maker that knows your boat and see what they suggest. It could be even smaller than a 100% dependent on your cruising plans.

[TropicCat]

No one mentioned to check and see if the genny has a leech line. If so, tighten and see if it stops.

[WDS123]

It sounds as if the entire foresail is shaking, nit just the leech, but good call - check the leech line and tension when leech is flapping.

[MarkSF]

Thanks, I will check the leech line, and the jib track adjustment. However I figured out the age of my sails, and it's at least 20 years. I'm thinking of getting a new main and jib. Now what size jib is the question.

[tomandchris]

Mark, that is also a question for a good SF area sailmaker that knows the bay. Really depends on what performance you want and what you are willing to do to get it. Also depends on what you want to invest.

Many SFBay sailors have a summer and a winter genoa. Your winds are heavier in the summer and less in the winter on average, and if they don't want to change headsails dependent on the days weather, the summer/winter is a compromise.