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Go Back   SailNet Community > General Interest > General Discussion (sailing related) > Sail Trim
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Thread: Sail Trim Reply to Thread
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Topic Review (Newest First)
05-27-2008 03:23 PM
KeelHaulin Looking at the pictures of the main; the halyard does not appear to be too slack (to me). The bolt rope on the luff is straight over the entire length of the sail so that tells me it is pretty tight already. The outhaul is too tight because you can see horizontal creases at the foot of the sail.

If the wind is good but the boat is not driving or has lee helm because of the 140; you could add draft to the main by hiking the traveler more and easing the mainsheet until the sail is centerline. Of course that would also increase your heel.

On your genoa; the main halyard is loose; the luff should be taught just the same as the mainsail. We tighten ours before we unfurl and loosen it a bit after re-furling.

Your jib looks like it is not sheeted in enough. The draft looks huge in that picture. We sheet our jib in until the clew pulls the sail in close to the spreaders and the draft of the sail moves forward nearer the luff. If the main is not sheeted down hard it will form a reverse bubble at the luff. Some sayt that it is OK for the reverse bubble to form; but I think it reduces the power of your main quite a bit. You will know when everything is properly trimmed because the helm will feel light and responsive.
05-27-2008 02:14 PM
sailingdog Looks like you need to tighten the jib halyard a bit too.
05-27-2008 02:09 PM
BarryL
Update

Hi Guys,

Keep the comments coming. Next time I will try a little more halyard and a little less outhaul.

Here is a shot of the genoa (taken at the same time as the main). The headsail is a brand new UK Halsey dacron 140. I should have had the sheet lead a little further aft and the sheet a little tighter too.

Some other comments:
The vang was off (we were close hauled).
The traveler was pulled up so the boom was on centerline (I had the mainsheet as tight as possible, then pull the boom up with the traveler).

The boat felt good: not too much heel, good boat speed, not too much weather helm, etc.

One final comment: Last year was my first with this boat (1986 O'day 35 with shoal draft keel). I liked the boat, but not the way it sailed. It seemed slow, heeled too much, lots of weather helm, etc. I knew when I bought it that the bottom paint was in poor condition, and the headsail was original (20 year old Neil Pryde 150 genoa). Over the winter I redid the bottom (see previous posts), faired the keel, and bought a new sail.

The boat sails much much better.

Barry
05-27-2008 01:48 PM
sailingdog GUI-

I didn't say anything about how the sail was trimmed... just that the wrinkles are telling me the halyard needs to be tightened, and the outhaul eased a bit. Without seeing the position of the boom relative to the boat, it could be overtrimmed or undertrimmed...and you'd never know.

Experience has taught me that most sailors overtrim their sails...and when in doubt, ease it out....
05-27-2008 01:24 PM
Giulietta I for one will not say a thing...can't judge anything from a photo, and specially not from that angle..

That's like posting a photo of a Ferrari and asking how fast is it going???
05-27-2008 12:10 PM
T34C
Quote:
Originally Posted by Valiente View Post
I am becoming one with the Portugee...
Have you tried Shock therapy?
05-27-2008 12:08 PM
T34C
Quote:
Originally Posted by SEMIJim View Post
I concur. Looks like the main halyard needed tightening, at least. I would've slacked-off the outhaul, first, got the luff tightened, then re-adjusted the outhaul for best shape and speed.

Lessee... 15 kts... 35 deg. AWA... Don't know anything about how your boat handles or what you were flying for a headsail, but you might've been able to use a bit of twist at the top for a bit more performance. Should've been no vang on that tack, traveller at the centerline, or perhaps a bit above, ease the mainsheet a bit. That would still get the boom and the bottom of the sail where they needed to be on that tack, but allow a bit of twist at the top. (But 1st the halyard and outhaul adjustments noted above.)

Otherwise: Based on the general shape and the tell-tales, the trim looks good .

Jim
I agree, more halyard, less outhaul, less mainsheet, and maybe move traveler up a bit after that if needed.

What boat are you sailing and what headsail is up?
(Sorry, just saw the O'day 35 in your signature.)
05-27-2008 11:41 AM
Valiente Why can't we have more threads like this, that actually talk knowledgeably about sailing?

I am becoming one with the Portugee...
05-27-2008 10:58 AM
SEMIJim
Quote:
Originally Posted by nolatom View Post
Wrinkles on the mast and boom make it look like the former could be tightened a little, the latter loosened a little, ...
I concur. Looks like the main halyard needed tightening, at least. I would've slacked-off the outhaul, first, got the luff tightened, then re-adjusted the outhaul for best shape and speed.

Lessee... 15 kts... 35 deg. AWA... Don't know anything about how your boat handles or what you were flying for a headsail, but you might've been able to use a bit of twist at the top for a bit more performance. Should've been no vang on that tack, traveller at the centerline, or perhaps a bit above, ease the mainsheet a bit. That would still get the boom and the bottom of the sail where they needed to be on that tack, but allow a bit of twist at the top. (But 1st the halyard and outhaul adjustments noted above.)

Otherwise: Based on the general shape and the tell-tales, the trim looks good .

Jim
05-27-2008 01:15 AM
Valiente
Quote:
Originally Posted by Plumper View Post
I agree with the luff not tight enough and the foot too tight.
I tend to agree, although without seeing the traveller position or how the mainsheet is set, it's hard to tell. It's obviously making the boat move and the ticklers look good.
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