Now Laser Cut Parts
Type British Built ¼ Scale WW-I Biplane fighter
Wing Span 77 Inches (14-3/4” cord) Both wings the same
Wing Area 1985 Square Inches total.
Airfoil Flat Bottom
Wing Loading 14~17 Oz. / Sq. Foot
Fuselage Length 53 Inches.
Flying Weight 12 to 14 Pounds
Engine Size Gasoline 20 ~ 25cc / 1.20 ~ 1.50 4-stroke glow
Prop Size Depends on engine being used
Fuel Tank 16~24 Oz. (compatible with fuel requirements of engine)
Radio Equipment 4-Channel W/ 5 servos min.
Servo Requirements High torque 60~70 In. / Oz. servos
Wheel Size 6-5/8 vintage (Not included in kit)
Cowl Diameter 9” X 5”
Scale prop 24-1/2 ~ 25” Dia.
Model Features
Balsa, Bass, and Ply construction
Two removable “1-piece” bolt on wings
Kit Includes
Full-Size plans W/ photo instruction book.
Jig & die cut parts
Pre-bent wire landing gear and struts W/ hardwood fairings
Basic hardware package
ABS plastic cowl.
Items Needed to Complete
Control system (push rod type or pull / pull cable system suitable for a model of this size)
Fuel System (fuel tank & fuel lines) compatible with the fuel requirements of engine being used. Covering (2) 5-meter rolls required. 1-pair 6-5/8 Vintage wheels
Regular Stocked Parts & Options
Part Number Description
D420 Decal Set
A420 Plans & Instructions
488 7” Vintage wheels (1-pair)
G902 1/4 Scale Vickers Gun (2 req.)
428 Gold-N-Rod 36” (one pack required)
430 Gold-N-Cable 36” (one pack required)
678 16 Oz. Fuel Tank (For Glow Fuel use ONLY)
Notes
Center of Gravity 4 Inches back from leading edge of TOP wing.
Control Throws: Incidence:
Elevator …...…… 1-1/2~2” Up and Down Top Wing ….…....… +1~2 Degrees
Rudder ……..… 3/4~1” Left and Right Bottom Wing …... -1~0.0 Degrees
Ailerons ……….. 3/4 ~ 1” Up and Down Tail …………… …... 0.0 Degrees
(Aileron differential recommended 1" Up 3/8” Down)
Thrust Line .. 2 Degrees DOWN, 1Degree RIGHT
1/4 Scale Sopwith Pup Decals “British”:
4 Large Roundels Top and bottom of the wings …………………….… 12 Inch
2 Small Roundels Fuselage sides ……………………………………..... 6 Inch
2 Number “4”s Fuselage sides ………………………………..…. 4-1/8 Inch
2 “Sopwith Aviation Co” Vertical fin.
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