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Molt models parkflyer p-38 lighting Building Instructions

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Summary of Contents for Molt models parkflyer p-38 lighting

  • Page 2 The first thing you’ll notice about a Molt Models kit is that the majority of wood parts, illustrations and plans are CAD based. These items are derived from the same 3D modeling environment that the plane was designed in.
  • Page 3 Molt Models P-38 Building Instructions Rev A Molt Models Parkflyer P-38 Lightning Specifications and Kit Requirements The P-38 Lightning is a fully functional aileron, rudder, elevator, and throttle controlled aircraft (4 channel). You may build the P-38 Lightning to fly with aileron, elevator, and throttle only by gluing the rudders to the vertical stabilizers.
  • Page 4 Standing behind the plane orients the left and right side of the model. The plans and building instructions refer to areas of the model in this manner. 4 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 5 Glue K8 into the notches of each of the boom formers O1, O2, O3, O4, O5, O6, and O7. Note that K8 orients O3, O5, and O6 at proper angles that interface the wing. Finish by gluing O3, O5, and O6 to K1, K4, and K6. Figure 1 5 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 6 Figure 3 6 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 7 Glue B11 and B12 into the notches of K2, K7, and I10. Glue pushrod exit P2 to B11 and O10. Glue K3 to K2, I4, and I5. K3 supports the landing gear. Figure 5 7 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 8 Figure 6 8 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 9 I3/O3, I4/O4, I5/O5, I6/O6 are aligned and flush with each other. Be sure to glue each of the mating formers and keels. A longer, more precise tip on your CA glue bottle can help here. Figure 7 9 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 10 At this point, one of the booms is complete. Build the other boom by starting at the beginning of the Boom Construction section of this manual. Note that this boom will be a mirror image of the previously constructed boom. 10 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 11 Build the “Right Boom Cover” shown on the plans in the same manner used to construct the “Left Boom Cover”. Sand the boom covers to eliminate uneven rough wood surfaces and excess dried glue. At this point the boom covers are complete. Figure 9 11 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 12 L4 is a guide to aid in the sanding process. Build an identical boom cowling from the additional set of L1, L2, L3, and L4 formers. At this point the boom cowlings are complete. Figure 10 12 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 13 Install the rudder and steering servo with the mounting screws included with the servo. Note the orientation shown in Figure 11. The servo arm should be trimmed/modified to an “L” shape; this matches the arm shown in Figure 11. Figure 11 13 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 14 Figure 12 and should be glued with 5-minute epoxy to ensure a strong bond. Once the stringers are installed it will be difficult to gain access to this area of the fuselage again. Figure 12 14 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 15 Only the left fuselage half contains structure and hardware for the nose gear. Figure 13 15 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 16 Sand the nose and tail of the fuselage smooth to blend into the shape of the fuselage. Also, sand the fuselage to eliminate uneven rough wood surfaces and excess dried glue. At this point the fuselage is complete. Figure 14 16 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 17 Glue R1 to the laminated S2, 3/32” SQ. Balsa, and E1 making sure it is tilted to the angle created with the use of the “Rib R1 angle gauge” shown on the plans and illustrated in Figure 15. Glue W12 and W13 to W11 and R15. Figure 15 17 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 18 Rev A Glue laminated S1, 3/32” SQ. Balsa, and LE to R1 through R15 and W11 where applicable. Glue A9 to R13 and the bottom 3/32” SQ. Balsa. Figure 16 18 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 19 Figure 17 Build the other wing half and aileron by starting at the beginning of the Wing Halves section of this manual and working from the plans. 19 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 20 Build Section #5 – Control Installation To maintain scale functionality, manage weight, and minimize the number of servos, the Molt Models P-38 makes use of a creative control system. The rudder servo is mounted in the fuselage and is required to operate the nose gear (if installed) as well as both rudders.
  • Page 21 Letters engraved are typical for each of the components that require tubing to be routed through them. Designates an area where tubing should not be glued to a component. Figure 19 21 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 22 1/4" Flexible yellow plastic tubing 1/4" Flexible yellow plastic tubing for aileron actuation cable for rudder actuation cable Flexible yellow plastic tubing for rudder actuation cable Figure 20 22 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 23 Install the Micro Connector to the servo arm as illustrated in Figure 21. Flexible plastic tubing for elevator actuation wire 1/8" 7/16" Flexible yellow plastic tubing for rudder actuation cable Flexible yellow plastic tubing for rudder actuation cable Figure 21 23 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 24 Install the Micro Connector to the servo arm as illustrated in Figure 22. Flexible yellow plastic tubing for rudder actuation cable 7/16" Flexible yellow plastic tubing for rudder actuation cable Figure 22 24 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 25 23 and shown by bold lines. These areas interface the booms and fuselage. Completely cover each of the ailerons. DO NOT be concerned about hinging the control surfaces at this point. Figure 23 25 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 26 Cover the entire horizontal stabilizer/elevator and vertical stabilizer/rudder except for the section illustrated in Figure 24 and shown by bold lines. These areas interface the boom. DO NOT be concerned about hinging the control surfaces at this point. Figure 24 26 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 27 Figure 25 and shown by bold lines. These areas interface the horizontal stab and wing. Completely cover the top of each of the boom covers. Figure 25 27 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 28 CA glue. This includes the leading edge, trailing edge, and spars of the wing to the their adjacent boom formers as shown in Figure 26. Repeat the previous steps to glue the opposite boom to the wing. Glue Glue Glue Figure 26 28 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 29 Glue the vertical stabilizers, and horizontal stabilizer to the booms making sure each of the vertical stabilizers are perpendicular to the horizontal stabilizer as illustrated in Figure 27. Figure 27 29 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 30 Install the Micro Connectors in the plywood control horns shown in Figure 28. Left rudder Right rudder Bottom left of aileron These surfaces flush after Bottom installation of elevator Bottom right of aileron Figure 28 30 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 31 Figure 29. Make sure that the ailerons fit into their openings without rubbing on adjacent surfaces. 3/4" transparent tape Figure 29 31 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 32 Micro Connector on the opposite aileron horn. Center the ailerons in their wing openings and tighten each of the 3 Micro Connector setscrews. 3/4" transparent tape Figure 30 32 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 33 Flexible yellow plastic tubing for rudder actuation cable (boom portion) Flexible yellow plastic tubing for rudder actuation cable (wing portion) 1/8" diameter X 1/2" long heat shrink tubing Figure 31 33 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 34 This is illustrated in Figure 32. (Note, the Du-bro wheels may have to be drilled out to fit the main landing gear wire) Figure 32 34 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 35 Trim each of the vacuum formed boom scoops to approximately match what is illustrated in Figure Paint the boom scoops to your liking. Vacuum formed boom scoop ~3/16" (top and bottom) Figure 33 35 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 36 Glue the boom scoops to the inside and outside of the booms between formers I7/O7 and I8/O8, and directly onto the covering with a light amount of 5-minute epoxy. This is illustrated in Figure 34. Glue surface (top and bottom) Figure 34 36 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 37 Molt Models P-38 Building Instructions Rev A Boom Covers Tape the boom covers to their Booms as illustrated in Figure 35. Boom Cover 3/4" transparent tape 3/4" transparent tape Figure 35 37 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 38 Glue a magnet to the center ribs R1 as illustrated in Figure 36 with 5-minute epoxy. This magnet serves as one half the canopy latch. Hook component of Velcro ("bristly" side) Loop component of Velcro on battery ("fuzzy side) 1" Magnet Figure 36 38 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 39 Molt Models P-38 Building Instructions Rev A Canopy Trim the vacuum formed canopy to approximately match what is illustrated in Figure 37. Vacuum formed canopy ~1/8" (both sides) Figure 37 39 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 40 Install a small piece of 3/4" tape on the front of the canopy as illustrated in Figure 38. This piece of tape acts as a hinge allowing you to open the canopy to replace batteries. 3/4" transparent tape Magnet Figure 38 40 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 41 Modify the GWS IPS rubber spinner included with your IPS to match what is illustrated in Figure 39. Trim the plastic vacuum formed spinner to match what is illustrated in Figure 39. Figure 39 41 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 42 1/32" aircraft ply spinner alignment plate (remove and discard after glue is dry) Glue between surfaces Note: Spinner is shown sectioned to help visualize the assembly. Figure 40 42 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 43 Note, you will need a 12” servo wire extension for the elevator and aileron servo. Battery Motor GWS IPS Receiver Motor Motor wiring schematic GWS IPS Figure 41 43 of 44 © Copyright 2004 Molt Models. All rights reserved.
  • Page 44 P-38 Lightning, I’ve found that it is quite useful to coordinate the turns by adding some rudder. This can be done manually, or by mixing some rudder output with the aileron channel on a computer transmitter. Enjoy your Molt Models P-38 Lightning! 44 of 44 © Copyright 2004 Molt Models. All rights reserved.