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Old Sep 24, 2012, 09:32 AM
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25+ years of RC flying
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United States, FL
Joined Aug 2012
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It's the hand launch. Note in the video that the fingers are still gripping/touching the left side of the plane after his thumb has let go of the right side. As the plane moves forward, the fingers are exerting a twisting force on the left side, causing the plane to roll to the left. The prop torque is probably also contributing some as well, but if the launch were correct the problem would be far less pronounced.

Try launching the plane by resting the bottom center part of the wing on the extended thumb and fingertips with the left hand and pushing from the tailpiece with the right hand. Throw the plane straight ahead like a spear and NOT angled upward. It should take off correctly.

Best of luck!
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