Thread: Discussion rear fin
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Old Oct 24, 2011, 09:13 AM
Art Schmitz is offline
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Crossville, TN
Joined Dec 2004
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The sub fin stabilizes the wetted side area of the floats behind the CG ( like the feathers on a dart ).
Some long tail moment designs don't need them, but all mine had them.
I make this area 1/3 of the vertical area just from personal preference.
Some, like most DH-2 Beavers, have them mounted on the h. stab.
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