Circus F9 with Spoilers and Rotary Rudder

Circus F9  is original RC ornithopter. Belt driving. Spoilers and Rotary Rudder tail. New GLDAB. Rotary Rudder is very effective for turn. Spoilers are weak effect for turn on this low speed ornithopter. チョウヒF9;作製中の滑空用羽ばたき機。回転式ラダーに加えて翼にスポイラーを設置。エルロン的な効果を狙いましたが、弱いようです。回転式ラダーの効果は抜群です。 width 138 cm length 73 cm weight 618 g Lipo 3cell  800mAh 74 g Total flight weight 692 g Receiver: Castle Creations Be
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