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Old 16th June 2010, 06:12 PM   #1
jaytea46
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Default Upwind on Go board

Please can someone explain the correct method for going upwind on a GO board in non-planing conditions. Thanks

Last edited by Roger; 17th June 2010 at 11:08 AM.
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Old 17th June 2010, 11:09 AM   #2
Roger
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Hi jaytea46,
Since the Go board (without the optional side fins) is essentailly a big short board,
you will need to tip your board so the upwind rail is lower than the downwind rail.
This will cant the bottom so the rocker and shape in the bottom will take you upwind.
You can stand slightly off center on the board (to the upwind side) and the board will sail
upwind.
You will also need to carry your rig a little more forward than normal (I know this sounds wrong, but if you do not keep the rig opened up and a bit forward you won't have the power to drive the board upwind).
Tipping the rig back, will drive the board upwind too much/too fast and you will not have as much power with the rig raked back.
So, to summarize...
Stand a little off center (upwind) on your board to "tip" it upwind rail down.
Balance the way the board wants to "carve" upwind on the bottom shape with the fore/aft position of the rig.
Hope this helps,
Roger

Last edited by Roger; 17th June 2010 at 11:15 AM.
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Old 17th June 2010, 08:23 PM   #3
jaytea46
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Thanks Roger - that is very helpful. I was raking mast back so therein lies the problem
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Old 17th June 2010, 08:41 PM   #4
Roger
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Hi again jaytea46,
Also be aware that the position of the mast foot in the mast slot on your GO can
affect the balance as well.
Get it too far back, and the board will want to turn upwind all the time.
Get it too far forward and the board will almost refuse to go upwind.
Just a little behind the center of the slot on a 6.5 m2 (mid size) rig has been a good
balance for me on most of the GO boards I've had in the demo fleet.
Also, do not oversheet the sail.
Let it out until you can feel no power in the sail, then sheet it in lightly
until the board moves well.
As you come closer to the wind, you will need to sheet in a bit more, but
the old sailors adage "when in doubt, let it out" still applies.
Your sail makes 2 forces...... one that gives you forward drive; and one that
pushes you sideways and downwind.
The forward drive component happens as soon as the sail begins to "draw" at
very shallow sheeting angles.
Then, if you sheet in more, the sideways force ramps up very quickly.
You need maximise the forward drive by only sheeting in the amount that
gives you good forward progress on your course.
You need to avoid sheeting in too much which drives your board sideways
downwind...... the opposite of the direction you want to go.
If you "oversheet" the sail, you will stall the power in the sail and simply drift
downwind (sideways...away from the wind).
So.... when in doubt, let it out!
Hope this helps,
Roger
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