Balsa Usa 1/4 Sopwith Pup 1956mm WS 120/150 4C 20-25cc gas 5.9Kg 4Ch

BUSA420
Stock Level:
Low Stock

Description

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.