Balsa USA 1/4 SC. SOPWITH PUP, 77" SP. 90/120 4C

BALSA USA KIT No. 420 1/4 SCALE SOPWITH PUP

British World War I Biplane Fighter

The Supwith Pup was one of the most famous World War Fighters. It is remebered as the best flying aircraft of World War I, a tribute to the Sopwith design philosophy of simple and aerodynamically clean structure. Pilots who flew this aircraft apparently looked upon is as an offspring of the 1-1/2 Strutter and dubbedit as the "Pup." Its little known official name is the Sopwith Type 9901. Our model is a faithful reproduction of this early aircraft.

Kit Features

• Full Size Rolled Plans and Instructions
• Jig and die cut parts
• Pre-bent Wire Landing Gear and Struts
• Basis Hardware Package
• ABS Plastic Cowl.

Specifications

• Wing Span: 77 Inches
• Wing Area: 1985 sq. in.
• Wing Loading: 14-17 oz./sq. ft.
• Flying Weight: 12-14 lbs.
• Fuselage Length: 53 Inches
• Engine Size: 23-25 Gasoline
                    1.2-1.5 4-Stroke Glow
• Cowl Diameter: 9x5 inches 

Center of Gravity: 4 inches back from the leading edge of the Top Wing.
Control Throws:
Elevator: 3/4-1 inch up and down.
Rudder:1 1/2-2 inches left and right.
Ailerons: 3/4-1 inch up and down.
Aileron Differential: 1 inches up and 3/8 inch down (differential recommended).

Incidence:
Top Wing: +1-2 Degrees.
Bottom Wing: -1-0.0 Degrees.
Tail: 0.0 Degrees.
Engine Thrust Line: 2 Degrees DOWN, 1-2 Degrees RIGHT.