SIG Piper J-3 Cub Assembly Instructions/Use And Care Manual
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SIG Piper J-3 Cub Assembly Instructions/Use And Care Manual

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Download this manual See also: Building and Flying Instructions
GENERAL INFORMATION
All of the parts on the plan are identified by a number or a letter.
Parts identified by a number are laser cut parts.
Parts identified by a letter are stripwood pieces that you cut and fit on assembly.
The slight discoloration of the edges of the laser cut parts may be removed by lightly sanding them with 400 grit
sandpaper.
The assembly of this model begins by building the fuselage side frames and then parts are added or assembled in
numerical order.
Your kit contains the following parts. Please check your kit for any missing or damaged parts before starting construction.
1 Plan Sheet #1
3 Yellow Tissue
1 15" Thread
8 1/16"sq.x18" Balsa Strip
1 3/16"x1 3/4" Dowel
1 Propeller Shaft
2 1/4"x1/2" Black Rubber Tube
1 3/16"x60" Rubber Strip
Tools and Building Supplies
You will need the following items to assemble this model. You must read and follow all of the manufactures
instructions provided with these items!
-Glue
-Cutting Tools
-Clear Dope, Thinner & paint brush
-Straight Pins
-Needle nose pliers
-1/4" Drill Bit
COMPLETE KIT PARTS LIST
1
Plan Sheet #2
1
1/16"x12" Music Wire
2
1/ 8"x4" Solder
12 3/32"sq.x18" Balsa Strip
1
Instruction Manual
2
Brass Thrust Washers
2
1/16"x1/16" Plastic Tube
15 Laser Cut Sheets
CA, White Glue, Sigment or Ambroid all work well.
A single edge razor blade can be used for all of the cutting.
-200, 320 and 400 sandpaper
-Wax Paper
-Crayon or Candle
-Building Board
1 Decal Sheet
1 Tail Wheel Assembly
3 3 1/4"x6" Window Material
2 1/8"sq.x18" Balsa Strip
1 9" Plastic Propeller
1 Plastic Propeller Bearing
1 6" Copper Wire

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Summary of Contents for SIG Piper J-3 Cub

  • Page 1 GENERAL INFORMATION All of the parts on the plan are identified by a number or a letter. Parts identified by a number are laser cut parts. Parts identified by a letter are stripwood pieces that you cut and fit on assembly. The slight discoloration of the edges of the laser cut parts may be removed by lightly sanding them with 400 grit sandpaper.
  • Page 2 The first thing that you need to do is to identify and mark the part numbers on the laser cut parts using the drawings on the following pages as a guide. It is possible that several of the laser cut parts may not be completely cut through. If this is the case you can free the part from the sheet quickly using an X-acto knife.

  • Page 4: Building The Fuselage

    Building the Fuselage 1. Cover the fuselage side frame plan with wax paper. Build the two fuselage side frames over the plan. Glue a piece of 3/32" sq. balsa across the bottom front of formers #8 and #10. 2. Place former #8 into position on one fuselage side. Glue it to the bottom and middle longeron on the fuselage side frame. Do not glue #8 to #2 at this time.

  • Page 5: Building The Tail Surfaces

    Building the Tail Surfaces 24. Cover the Rudder plan with wax paper. Pin #67 into position on the plan. Now pin and glue #68 and #69 into place. Now complete the fin by adding the two 3/32" sq. balsa pieces. Remove the fin from the plan. 25.

  • Page 6: Covering The Model

    Covering the Model 44. Sand all of the parts smooth. Test fit the wings to the fuselage. Test fit the tail surfaces with the fuselage. Make any adjustments necessary to achieve the proper fit. Cut the windshield using the pattern on the plan and check the fit With the fuselage.

  • Page 7: Safety Rules

    68. Assemble the propeller and tie the rubber motor. Install the prop and motor, using the 3/32" dowel to retain the motor at the aft end of the model. 69. Attempt to balance the model at the position shown on the plan. If the model is tail heavy (it probably is), Make the dummy exhaust from the 1/8"...

  • Page 8: Warranty

    LIMIT OF LIABILITY: In use of our products, Sig Mfg. Co.'s only obligation shall be to replace such quantity of the product proven to be defective. User shall determine the suitability of the product for his or her intended use and shall assume all risk and liability in connection...

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