Flying my 30" J-78 plank at Grass Mountain. The plane was a bit light for the wind so I taped a bag of lead fishing sinkers to the bottom for ballast. The plane is made of dollar store foam board with no spar and a KFm2 airfoil. It weighs about 3oz without ballast.
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2014-10-04, J-78 (KFm SAL Plank), 3 oz, 30" Span, No Spar, Blue Arrow Servos