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Big Tabs 101

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Old 05-23-2006, 11:33 AM
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Default Big Tabs 101

Just installed a set of new 19 inches TABS on my single 25’ and I’d like to know how I should dial with tabs and drive position when dealing with rough waters…

Any tips? Personal experiences, techniques… ?
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Old 05-23-2006, 11:36 AM
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Default Re: Big Tabs 101

you could take Tres Martins Class.
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Old 05-23-2006, 11:52 AM
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Default Re: Big Tabs 101

Quote:
Originally Posted by LostinBoston
you could take Tres Martins Class.

Still need a job? You could give rough waters driving courses...
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Old 05-23-2006, 12:28 PM
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Default Re: Big Tabs 101

Set them at neutral or on parallel plane with the bottom of the boat for most running conditions. (Do this with a long straight edge level or something placed against the hull, and measure from the edge of the hull up to the base of the tab, and then again at the trailing edge of the tab, so they match.) Go ahead and take a Sharpie and mark your indicator for the tabs position so its easier to find when adjusting. Then, figure out which setting takes them down so they meet an imaginary plane extending from the edge of the hull to the trailing edge of the tab. (Do this with a long straight edge level or something placed against the hull, and bring tabs down to meet the edge.) I doubt you will ever need more tab than this, but if you do, just drop them down at 1/2 step increments until the boat feels a bit more comfortable. Obviously, the further you go, the more speed you scrub off, and the more inefficient the boat becomes. You also increase the force on the tabs and risk damage or unplanned removal of a tab.

I also have my drives marked on the indicator with a Sharpie for neutral and for ideal running conditions that I set while on flat water with the GPS looking for ideal speed. The little Sharpie lines or dots work well for me. Sharpie comes off the little window with Fantastic when needed.

Last edited by Sydwayz; 05-23-2006 at 12:31 PM.
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Old 05-23-2006, 01:24 PM
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Default Re: Big Tabs 101

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Set them at neutral or on parallel plane with the bottom of the boat for most running conditions. (Do this with a long straight edge level or something placed against the hull, and measure from the edge of the hull up to the base of the tab, and then again at the trailing edge of the tab, so they match.) Go ahead and take a Sharpie and mark your indicator for the tabs position so its easier to find when adjusting. Then, figure out which setting takes them down so they meet an imaginary plane extending from the edge of the hull to the trailing edge of the tab. (Do this with a long straight edge level or something placed against the hull, and bring tabs down to meet the edge.) I doubt you will ever need more tab than this, but if you do, just drop them down at 1/2 step increments until the boat feels a bit more comfortable. Obviously, the further you go, the more speed you scrub off, and the more inefficient the boat becomes. You also increase the force on the tabs and risk damage or unplanned removal of a tab.

I also have my drives marked on the indicator with a Sharpie for neutral and for ideal running conditions that I set while on flat water with the GPS looking for ideal speed. The little Sharpie lines or dots work well for me. Sharpie comes off the little window with Fantastic when needed.

Thats what I would do too.
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Old 05-23-2006, 01:34 PM
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Default Re: Big Tabs 101

Interesting... I would have taught that I would have to lower the tabs more than that...

What about the drive position? Considering that the tabs are lowered, what's the best equation speed wise VS handling and tabs position? My guess would be neutral position?



Thanks
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Old 05-23-2006, 01:35 PM
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Default Re: Big Tabs 101

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Thats what I would do too.

To bad We missed you and GL at L-G
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Old 05-23-2006, 01:51 PM
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Default Re: Big Tabs 101

I'd set the drive position on flat water for the best results. Start with neutral, and trim out until you start to slow down (by GPS) due to cavitation/blow out or get crazy on the handling. (There are more factors than this, but these are the easiest to explain.)

Keep the drive at this setting. When you are in some light consistant 12-18" chop with no risk of sky-ing the boat, you can run it here.

When you get a little bigger water in front of and under you, you may want to tuck the drive in to keep from sky-ing the boat on the wrong wave. Your drive trim angle plays a bigger part than your tabs do when it comes to flying off a wave and becoming vulnerable. If you rely on stuffing the tabs down into the water to keep your flights sane, you are going to risk stuffing the boat. Control your flight with the drive as best you can.

Last edited by Sydwayz; 05-23-2006 at 04:53 PM.
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Old 05-23-2006, 02:11 PM
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Default Re: Big Tabs 101

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Originally Posted by JS232
To bad We missed you and GL at L-G
With all the stories, it was almost like they were right there...
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Old 05-23-2006, 02:42 PM
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Default Re: Big Tabs 101

Quote:
Originally Posted by JS232
Still need a job? You could give rough waters driving courses...
I probably could.
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