1/4 Scale J-3 Piper Cub

Type                                        ¼ Scale Piper J-3 Cub

Wing Span                              108 Inches (16” cord) 

Wing Area                              1610 Square Inches

Airfoil                                     flat bottom

Wing Loading                         18~20 Oz. / Sq. Foot

Fuselage Length                      68 Inches.

Flying Weight                         12 to 14 Pounds

Engine Size                             60 to 1.08 2-stroke / 90 to 1.20 4-stroke / 20cc gas engine

Fuel Tank                                12~24 Oz. (compatible with fuel requirements of engine)

Radio Equipment                    4-Channel W/ 5 servos min.

Servo Requirements               High torque 60~70 In/Oz. servos for rudder and elevator.

Wheel Size                              4-1/2” “Cub” wheels, 1-1/2” tail wheel (Not included in kit)

Cowl / Firewall                       5-1/4” wide 7” High

Model Features

Balsa, Bass, and Ply construction

Removable “2-piece” bolt on wings

Kit Includes

Full-Size plans W/ photo instruction book.

Jig & die cut parts

Pre-bent wire landing gear and struts

Basic hardware package

ABS plastic cowl.

Windshield & Window material (windshield is NOT molded)

Decal set

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.   (2) 5-meter rolls of covering material 

Regular Stocked Parts & Options

Part Number             Description   

   D438            Decal Set (Does NOT include Lighting Bolts or “N” Numbers)       

   A438            Plans & Instructions    

   490                           1/4 Scale “Cub” Wheels W/ Hub Caps (1-Pair 4-1/4 Inch Dia.)

   429                           Gold-N-Rod 48”  (one pack required)

   430                           Gold-N-Cable 36”  (one pack required)

   678                           24 Oz. Fuel Tank  (For Glow Fuel use ONLY)

  Center of Gravity 4 inches back from the Leading Edge of Wing

            Control Throws:                                 Incidence:

Elevator …….. 1” Up and Down                     Wing  …………… +1 Degrees          

Rudder …….  1-1/2” Left and Right                  Tail ...…………..  0.0 Degrees           

Ailerons ……. 3/4” Up and Down                         

(Aileron Differential  1-3/4" Up 3/4” Down)                

Thrust Line 2 Degrees DOWN,  1~2 Degrees RIGHT

1/4 Scale Piper Company Decals (Included with Kit)

(2)       “Cub Bear” Decal                               Vertical Fin

(2)        “Piper” Name Plates                          Boot Cowl just aft of Engine Cowl

(2)       “No Step” Decals                              Base of Lift Struts

For “N” Numbers and Lightning Bolts see your local “Sign Shop”

Rust-oleum 2X “Golden Sunset” is a good match to Oratex “Cub Yellow”.