corkonian1
Well-Known Member
Will somebody explain why setting the mainsheet traveller to leeward in strong winds reduces heeling.
Traveller query
- Thread starter corkonian1
- Start date
MoodySabre
Well-Known Member
Has a similar effect as letting out the mainsheet - de-powers the main a bit so the boat sits up. If you are heeling too much then you need less sail or less power in the main by letting it to leeward one way or the other.
No doubt there are theorist out there with a more complicated view of it!
No doubt there are theorist out there with a more complicated view of it!
Clyde_Wanderer
Well-Known Member
Also gives more precise control of the sail through main sheet by keeping the latter shorter, in other words the more vertical the main sheet the more precise the control, less lost time and motion.
BTW have you ever sailed around Dunmore east? stayed there once, "Still Gods country."
BTW have you ever sailed around Dunmore east? stayed there once, "Still Gods country."
vyv_cox
Well-Known Member
Reducing mainsheet tension allows the leech to drop down but also increases sail curvature, thus overall effectiveness is not the best. The upper part of the sail remains fairly close-winded, having little effect on heeling.
Dropping the traveller down a little allows the sail to remain flattter but overall less close-hauled, so heeling is reduced but power stays up.
Dropping the traveller down a little allows the sail to remain flattter but overall less close-hauled, so heeling is reduced but power stays up.
Salty John
Well-Known Member
And having a flat main allows you to drop the traveller down in the gusts with less likelyhood of backwinding from the jib.
VicS
Well-Known Member
Agrreed with what has been said it has the same effect as easing the sheet a little but flattens the main rather than allowing it more fullness.
Hauling the traveller up to windward in light airs allows you to bring the boom in to the centre line without flattening the main.
Hauling the traveller up to windward in light airs allows you to bring the boom in to the centre line without flattening the main.
peteandthira
Well-Known Member
VicS
I have NEVER found any value in my boat from hauling the traveller to windward. I always end up either stalling the main or having to let it back out again to maintain drive.
Is this something typical of AWBs or am I just not doing it right?
Pops
I have NEVER found any value in my boat from hauling the traveller to windward. I always end up either stalling the main or having to let it back out again to maintain drive.
Is this something typical of AWBs or am I just not doing it right?
Pops
flaming
Well-Known Member
traveller to windward with sheet eased to keep boom at centreline (and with Kicker slack) will give a powerful twisted sail but still on the centreline.
savageseadog
Well-Known Member
[ QUOTE ]
VicS
I have NEVER found any value in my boat from hauling the traveller to windward. I always end up either stalling the main or having to let it back out again to maintain drive.
Is this something typical of AWBs or am I just not doing it right?
Pops
[/ QUOTE ]For light airs haul the traveller up and let the sheet go to centre the boom, the top of the main will ease, the kicker will have a lot of control.
VicS
I have NEVER found any value in my boat from hauling the traveller to windward. I always end up either stalling the main or having to let it back out again to maintain drive.
Is this something typical of AWBs or am I just not doing it right?
Pops
[/ QUOTE ]For light airs haul the traveller up and let the sheet go to centre the boom, the top of the main will ease, the kicker will have a lot of control.
corkonian1
Well-Known Member
So I get that the traveller to leeward keeps sail , boom and sheet in same vertical plane and so prevents sail twist.
But why is a sail which can twist more powerful than a rigid sail? I would have thought that a sail capable of twisting could spill wind in a gust and so heel less. /forums/images/graemlins/confused.gif
But why is a sail which can twist more powerful than a rigid sail? I would have thought that a sail capable of twisting could spill wind in a gust and so heel less. /forums/images/graemlins/confused.gif
stevebrassett
Well-Known Member
[ QUOTE ]
But why is a sail which can twist more powerful than a rigid sail? I would have thought that a sail capable of twisting could spill wind in a gust and so heel less. /forums/images/graemlins/confused.gif
[/ QUOTE ]
The wind near the water is slowed down by friction. Allowing the sail to twist (a bit) will set the sail to the correct angle to the wind at different apparent speeds (and hence angle). The effect is even more pronounced with a fractional rig, where the jib bends the wind around the lower part of the mainsail.
But why is a sail which can twist more powerful than a rigid sail? I would have thought that a sail capable of twisting could spill wind in a gust and so heel less. /forums/images/graemlins/confused.gif
[/ QUOTE ]
The wind near the water is slowed down by friction. Allowing the sail to twist (a bit) will set the sail to the correct angle to the wind at different apparent speeds (and hence angle). The effect is even more pronounced with a fractional rig, where the jib bends the wind around the lower part of the mainsail.
