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Old 04-26-2005, 05:57 PM
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Location: lancaster, CA,
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Default RE: zoom zoom??

HI All, this afternoon I added a 3/16" carbon tube I had on hand. I glued this carbon tube down the side of the fuselage from the motor to the horizontal stab. The result is a VERY STIFF airframe. I flew it again in about 15-20 + gusting conditions, and the plane was just rock solid. This spar made a tremendous difference in the way it flew, and the extra 0.3 oz or so made no difference in vertical performance. If I had to do this again, I would also add this type of spar to the wing, which with just the incorporation of a carbon 0.07 rod, still flexs a little in pull-outs and with gusts. Basically, this type of spar-age gives the still bouncable EPP frame, the stiffness of a wood built-up structure.
Jim W.