This is a .15 size Butterfly Glider Trainer.
Constructed of balsa and plywood
2-piece wing for easy transportation
Flat bottom airfoil for slow, forgiving flight characteristics,
capable of 12 mph landing speeds
Simple and quick to build
Three channel operation (throttle, rudder, elevator)
Hardware package (hinges, quick connectors, pushrods, misc. screws),
Full-Size Plans, Photo Illustrated Instructions, All Balsa and
Plywood to complete the kit.
Radio: 4 Channel with Three Servos
Engine: .10-.20 (2-stroke)
Covering: Two 6-Foot Rolls
Misc. Items: 4oz Fuel Tank, 2¼" Main Wheels, Rubber Bands,
Building and Starting Equipment, Engine Mount, and Prop.
Wingspan: 99" Wing area: 916 sq in
Flying weight: 50oz Wing loading: 7.5 oz/sq ft
Center of Gravity: 3-3/16" Back From Wings Leading Edge
Elevator: ¾" Up and Down
Engine Down Thrust: 3°
Engine Right Thrust: 3°
Wing Incidence: +1°
Stab Incidence: 0°
The instructions say to use a .10-.15 engine and the box says to use
a .15-.20 engine. The plane can use a .10-.20 engine.
Per Designer, a Thrustmaster or Speed 400 electric would be fine,
but instructions do not cover installation for electric power.