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Sailboarder
Joined: 10 Apr 2011 Posts: 656
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Posted: Fri Sep 21, 2012 11:17 am Post subject: |
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Mmm... I posted a detailed answer that was lost in a digital black hole it seems...
To stay short, if banking the board is the first mean for turning while on the plane, changes in the sail position are more important and are used while planing too.
And when the sail is back at high speed, you are right that the COE is far back ( in fact over the water) but it doesnt bring the board upwind. You do that to counteract the increasing drag of the fin that couples with the forward lift of the sail to rotate the board downwind. Try to find Jim Drake's introduction to windsurf physics to see the detailed explanation. |
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cgoudie1
Joined: 10 Apr 2006 Posts: 2599 Location: Killer Sturgeon Cove
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Posted: Fri Sep 21, 2012 12:14 pm Post subject: |
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I'm going to have to mention that if your sail COE is behind your fin,
you're not in a stable circumstance, and are likely running too large a sail
for the board. For the best ride, you want your COE right over your
(rear) fin.
-Craig
Sailboarder wrote: | Mmm... I posted a detailed answer that was lost in a digital black hole it seems...
To stay short, if banking the board is the first mean for turning while on the plane, changes in the sail position are more important and are used while planing too.
And when the sail is back at high speed, you are right that the COE is far back ( in fact over the water) but it doesnt bring the board upwind. You do that to counteract the increasing drag of the fin that couples with the forward lift of the sail to rotate the board downwind. Try to find Jim Drake's introduction to windsurf physics to see the detailed explanation. |
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Sailboarder
Joined: 10 Apr 2011 Posts: 656
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beaglebuddy
Joined: 10 Feb 2012 Posts: 1120
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Posted: Fri Sep 21, 2012 3:34 pm Post subject: |
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Wow that's some explanation from Drake, I'm not even gonna try and decipher all that. I'm a plumber not an engineer. |
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