Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc Instruction Manual

epoxy as photo shown (photo 12,13). hen, locate and assemble S1 to SH1 (let side). Use heavy lat thing pressed on Fuselage Side until epoxy dries to ensure irewall block is not warped. Locate and assemble SW1 to let fuselage side as photo shown (Photo14,15). hen, locate and assemble SW2 to right fuselage side by epoxy glue. NOTE: Apply to assemble let fuselage side and right fuselage side are symmetrical to each other. he small point is regulations for the right side. 12. 13. 14. 15 . Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc 12 Instruction Manual. 17. 18. 19. 16. 21. 20. All parts are available for assembly the mount of motor. (Photo 18). Locate and assemble 5 pieces to become the motor mount box (Photo 19). First, reinforce the triangle at two angle inside (perpendicular angle of MO3 and MO4) as photo shown. hen, measure the length of electric motor, so that adjust and locate position of MO1. his time, reinforce the triangle at two angle inside (perpendicular angle of MO1 and MO4). (Photo 20). As shown (photo 21). All parts are available for fuselage assembly. * Build the fuselage. 13 22. 23. 26. 24. 25. Pick some parts as shown (photo 22). Include SH1, SH2, F3B, F5, F6, F7, F8, F9, F18. Locate and assemble F7 to F18 as (Photo 23). Locate and build F3 into assembly SH1, S1 as (Photo 25). Locate and build F4, F5 into assembly SH1, S1, F18 as (Photo 26 and 27). hen, locate and build assembly SH2, S2 at the right side as (Photo 28). Locate and build assembly SH1, S1 into assembly F7 ,F18 as (Photo 24). NOTE: he small point is regulations for the right side. NOTE: he small point is regulations for the right side. 27. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc 14 Instruction Manual. 29. 28. 30. 31. 32. 33. Locate and assemble F8, F9 as (Photo 29). Locate and assemble F4A as (Photo 32). Locate and assemble F7A as (Photo 33). Locate and assemble F31 as (Photo 34). Locate and assemble F17 as (Photo 30). Locate and assemble F6A as (Photo 31). 15 Locate and assemble F25 as (Photo 35). Locate and assemble FS1 as (Photo 38). Locate and assemble F1 as (Photo 39). Locate and assemble the former, one ater another in order F10- F15 as (Photo 40). NOTE: he small point is regulations for the right side. Locate and assemble F2 as (Photo 36). Locate and assemble F3A as (Photo 37). 34. 35. 36. 37. 38. 39. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc 16 Instruction Manual. 40. 41. 42. 45. 43. 44. Attach the aluminum square tool bar to the square hole at each former. It is through along to fuselage to adjust to fuselage straight. Remove it ater inishing covering balsa sheet for fuselage (photo 41). Locate and assemble all the mount are shown as (Photo 42). Locate and assemble F20 (the mount of the stabilizer) are shown as (Photo 43). Locate and assemble F19 (the mount of the stabilizer) are shown as (Photo 44). Locate and assemble F24 shown as (Photo 45). Locate and assemble F27 (two sides shown as (Photo 46). NOTE: he small point is regulations for the right side. 17 46. 48. 49. 47. 50. Locate and assemble F23 shown as (Photo 47). Locate and assemble two triangle balsa bars to reinforce F6, F7 shown as (Photo 50). Locate and assemble F26 shown as (Photo 48). Locate and assemble F35 (the mount of landing gear) to area at between F6 and F7 by epoxy glue shown as (Photo 51,52). Need sanding clear stain smoke at place add glue so that the glue absorb quickly. Locate and assemble F2A, F2B shown as (Photo 49). 51. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc 18 Instruction Manual. 53. 54. 52. 56. 57. 55. Locate and assemble triangle balsa bar (2 pcs) to reinforce F6, F7 and F35 shown as (Photo 53) to ensure hardly for the mount of landing gear. Locate and assemble F34 (the mount of strut) at let side and right side as (Photo 56). Locate and assemble F21 as (Photo 57). Locate and assemble F28, F29 (the mount of screw for cowling) as (Photo 58). Locate and assemble FS32 (the mount of servo) as (Photo 54). Locate and assemble F4 ( two sides) as (Photo 55). 19 58. Locate and assemble F27 (the mount of bolt for fuselage hatch) as (Photo 59). Locate and assemble as the plan drawing for the top fuselage hatch and the bottom fuselage hatch. (Photo 62). Locate and assemble H5 (washer ring) and the spring pin for the top fuselage hatch. (Photo 63). Install the top hatch and the bottom hatch into the fuselage. hen, adjust them ix to fuselage. Photo 64 (top), Photo 65 (bottom). Locate and assemble two triangle balsa bars at two side to reinforce F1 and fuselage side as (Photo 60). Attach the plastic pushrod tube to the push- rod hole at each former fuselage as photo shown (photo 61). 59. 60. 61. 62. 63. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc 20 Instruction Manual. 64. 65. 69. 66. 68. 67. Locate and assemble the iberglass tunnel (2pcs) for wing tube go through at fuselage. (Photo 66). Light sanding F37 (2pcs) .hen, assemble F37 at area intersect to the stabilizer so that increase thickness at this intersection place, ensure strong to mount stabilizer. (Photo 67,68). Sanding around the fuselage to avoid the rough before covering the sheet. (Photo 69,70). 21 70. Weld together two diference pieces SH6 become a sheet (let and right) by CA glue as photo shown. (photo 71,72). 71. 72. * Sheeting of the fuselage (cover to the ribs of fuselage). Bend the balsa sheet go to the curve of top area. hen, add CA glue and use the inger at this place until the glue dries as photo shown. Do the same for the other half of the top area, so that the balsa sheet keep ixed fuselage. hen, add a little epoxy glue inside at intersect place of all ribs and sheet. Weld together two diference pieces SH3 become a sheet (let and right) by CA glue as photo shown. (photo 74,75). Put the sheet SH6 at area of fuselage as photo shown (photo 73). 73. 75. 74. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc 22 Instruction Manual. 76. 77. 78. 79. 80. 81. Put the sheet SH3 at area of fuselage as photo shown (photo 76). Bend the balsa sheet go to the curve of bottom area. hen, add CA glue and use the inger at this place until the glue dries as photo shown . Put the sheet SH5 at area of fuselage as photo shown (photo 79). Bend the balsa sheet SH5 go to bottom area and toward area. hen, add CA glue and use the inger at this place until the glue dries as photo shown. Do the same for the other half of bottom area and toward area, so that the balsa sheet keep ixed fuselage. hen, add a little epoxy glue inside at intersect place of all ribs and sheet. (Photo 80). Weld together two diference pieces SH1 become a sheet (let and right) by CA glue as photo shown. (photo 81,82). Do the same for the other half of the bottom area, so that the balsa sheet keep ixed fuselage. hen, add a little epoxy glue inside at intersect place of all ribs and sheet. Weld together two diference pieces SH5 become a sheet (let and right) by CA glue as photo shown. (photo 77,78). 23 85. 82. 86. 83. 87. 84. Put the sheet SH1 at area of fuselage as photo shown (photo 83). Prepare some balsa sheet as (Photo 85). Locate and assemble SH9 as (Photo 86). Locate and assemble SH7 as (Photo 87). Locate and cover balsa sheet H6 on top hatch as (Photo 88). Bend the balsa sheet SH1 go to top area and to- ward area. hen, add CA glue and use the inger at this place until the glue dries as photo shown. Do the same for the other half of top area and toward area, so that the balsa sheet keep ixed fuselage. hen, add a little epoxy glue inside at intersect place of all ribs and sheet. Weld together two diference pieces H6 become a sheet by CA glue as photo shown. (photo 84). Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc 24 Instruction Manual. 89. 90. THE WING 1. 2. 3. 88. Locate and cover balsa sheet SH8 on bottom hatch. Ater cover a half, use the pen to take a mark for position of bolt’s hole as. (Photo 89). Locate and apply W34 (2pcs) to W35 by epoxy as photo shown (photo 1 and 2). NOTE: Apply to assemble trailing edge wing let and trailing edge of wing right are symmetrical to each other. LoLocate and apply W31 to W32 by epoxy as photo shown (photo 3). NOTE: Apply to assemble trailing edge wing let and trailing edge of wing right are symmetrical to each other. * Prepare the trailing edge at of wing. Cut of the sheet to make the exit slot for push rod of rudder and elevator. (Photo 90). 25 Locate and apply W20 (2pcs) to W2 by epoxy as photo shown (photo 4,5). NOTE: Apply to assemble ribs of wing let and ribs of wing right are symmetrical to each other. Locate and apply W16 to W17 (the mount of wing strut) by epoxy as photo shown (photo 6,7). Attach the Pronged T-Nut M3 at hole available on the mount of wing strut. hen, apply W19 and W18 (washer to reinforce Pronged T-Nut M3) to the mount. (Photo 8). Prepare all parts to assemble a wing (Photo 9). NOTE: It is recommended to divide all parts into groups of the wing let and groups of wing right before building to avoid assembling them in the same direction. * Build the wing. 4. 5. 6. 7. 8. 9. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc 26 Instruction Manual. 10. 11. 12. 13. 14. 15. 16. Locate and assemble W2 to W13 with W28 (main wing spar) by CA glue as shown photo (Photo 10,11,12). Locate and assemble leading edge W27 and trailing edge W31, W34 by CA glue as shown photo (Photo 13,14,15,16). 27 17. 18. 19. Locate and assemble cap strip stock W29 by CA glue as shown (Photo 17). Locate and assemble rib of tip W14, W15 by CA glue as shown (Photo 18). Locate and assemble the mount of Flap’s servo W22 by CA glue as shown (Photo 21). Locate and assemble the mount of Aileron’s ser- vo W23 ,W23A by CA glue as shown (Photo 22). Locate and assemble the mount of strut W16 and W17 by CA glue as shown (Photo 23). Locate and assemble the sheet W33 to reinforce hinge by CA glue as shown (Photo 19). Locate and assemble the cap strip W30 to reinforce hinge by CA glue as shown (Photo 20). 20. 21. 22. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc 28 Instruction Manual. 23. 24. 26. 25. 27 . 28. Locate and assemble the lock of wing tube W21 to W4, W5 by CA glue as shown (Photo 24). Locate and assemble wing tube. Light sanding the wing tube to it can through to holes easily as photo shown (photo 27,28). Locate and assemble the 8mm balsa leading edge (photo 29). Locate and apply W5A to W5 by CA glue as shown (Photo 25). Locate and apply W4A to W4 by CA glue as shown (Photo 26). 29 31. 29. 30. 32. 33. 34. Sanding around at weld places for avoid rough so that covering sheet easily (photo 30). Cover sheet W37 at bottom, and W36 at top ( Photo 33). Weld two parts of W38 together to become a sheet (Photo 34). Cover sheet W38 to wing at Flap servo as (photo 35). Cover sheet W40 at bottom, and W41 at top (Photo 31,32). * Finishing he Outer Wing Panels. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc 30 Instruction Manual. 36. 37. 38. 39. 40. 35. Weld two parts of W38A together to become a sheet (Photo 36). Finish cover sheet for wing at bottom as (photo 39). Cover sheet W38A to wing at Aileron servo as (photo 37). Weld two parts of W39 (1) and W39 (2) together to become a sheet (Photo 40). Cover sheet W38B to wing as (photo 38). Cover sheet W39 to wing as (photo 41). 31 41. Finish cover sheet for wing at top as (photo 42). Locate and assemble the aileron (ribs WA7, ribs WA8 to sheet WA9) as (photo 45,46). Locate and assemble 6x6 balsa stick (Leading edge of Aileron) .hen, cover sheet WA10 at rest side. And use heavy lat thing pressed on Aile- ron until epoxy dries to ensure it is not warped as (Photo 47). Cover sheet W42 to wing tip at bottom as (photo 43). Cover sheet W43 to wing tip at top as (photo 44). 42. 43. 44. 45. 46. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc 32 Instruction Manual. 47. 48. 52. 49. 53. 50. 51. Locate and apply sheet W11and W12 at two sides of Leading edge as (photo 48,49,50). Finish cover sheet as (photo 51). Locate and assemble the lap (ribs WA1, ribs WA2, to Leading edge of lap WA3) as (photo 52). Locate and assemble the rib’s frame of lap to sheet WA5 by CA glue as (photo 53). Locate and assemble the reinforce of lap WA4 to sheet WA5 by CA glue, apply three pieces for each (lap let and lap right) as (photo 54,55). 33 54. 55. Locate and apply W1 to W2. And then set up wing to fuselage by sanding until itting (no gap between wing and fuselage). (Photo 58). Locate and assemble the rectangle balsa block to space tip. And then sanding rounded until itting as (Photo 59,60). Cover sheet WA6 at rest side. And then use heavy lat thing pressed on Flap until epoxy dries to ensure it is not warped as (photo 56). Sanding the place of root W2 for smooth. (Photo 57). 56. 58. 59. 57. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc 34 Instruction Manual. 60. 64. 62. 66. 63. 61. 65. Sanding rounded leading edge area until the shape seamless W1 as (Photo 61). Assemble the wing servo mount by epoxy glue. (Photo 64,65,66). Take the mark for hinge’s position of Aileron and sawn the slot of hinge. Note: cut of the slot it so that avoid so wide cause CA hinge will fall out. (Photo 62). Finish built as (photo 63). 35 1. THE STABILIZER AND ELEVATOR 2. 3. 5. 4. Locate and assemble one ater another one from ST4 – ST8 into ST2 and ST3 to become the rib’s frame Stabilizer by CA glue as (photo 1). Weld two parts of sheet ST10 to become one. Sanding around frame to remove the rough. hen, cover the sheet ST10 from direction ST3-ST2-ST1. Cover for top and bottom of Stabilizer by CA glue as (photo 4,5,6). Locate and assemble rib ST9 at two tip end of Stab as (photo 3). Locate and assemble ST1 (the leading edge of Stabilizer) as (photo 2). 6. Locate and assemble the elevator. Assemble one ater another one from ST11 – ST17 into sheet ST19 by CA glue as (photo 7). Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc 36 Instruction Manual. 7. 10. 8. 11. 9. 12. THE FIN AND RUDDER Take the mark for hinge’s position of Elevator and sawn the slot of hinge. Note: cut of the slot it so that avoid so wide cause CA hinge will fall out. (Photo 10). Locate and assemble rib T6, T7 to leading edge T5 by epoxy glue. (Photo 1). First, assemble 6 paper hinges to stabilizer. hen, link to elevator. (Photo 11). Sanding rounded leading edge area until the shape seamless as (photo 12). Locate and assemble ST18 by CA glue. (Photo 8). Add little epoxy to all ribs and cover sheet ST20 at the rest side. Apply the triangle balsa stock. hen, cut of excess part of balsa stock for itting as (photo 9). 37 1. 2. 3. 4. 5. Locate and assemble rib T18. hen, assemble rib T10 by epoxy glue. (Photo 2). Locate and assemble rib T8 and T9 by epoxy glue. (Photo 3). Locate and assemble one ater another one from ST11 – ST17 as (photo 4,5). Weld two parts of sheet T22 to become one as (photo 6). 7. 6. Locate and apply sheet T22 as (photo 7). Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc 38 Instruction Manual. 8. 9. 10. 12. 11. 13. Finish the segment tap of in as (photo 13). Locate and apply sheet T20 (2pcs) at two sides by CA glue. hen, cover the sheet T20 from direc- tion trailing edge to leading edge. Plug the sheet in all tabs as (photo10). Locate and assemble rib T3, T4 to center rib strip T1. hen assemble T2 (bottom piece) as (photo 11). Locate and cover two sheets T1A ( at two sides) as (photo 12). Locate and apply sheet T23 (2pcs) at two sides as (photo 8). Weld two parts of sheet T20 to become one as (photo 9). 39 14. Locate and assemble one ater another one from T26 – T32 into leading edge of rudder T24 as (photo 14, 15). Apply the triangle balsa stock at leading edge of rudder. hen, cut of excess part of balsa stock for itting as (photo 16,17). Take the mark for hinge’s position of rudder and sawn the slot of hinge. Note: cut of the slot it so that avoid so wide cause CA hinge will fall out. First, assemble 3 paper hinges to in.hen,link to rudder. (Photo 18). 15. 16. 17. 18. 19. Sanding rounded leading edge area of in until the shape seamless as (photo 19). Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc 40 Instruction Manual. SET UP THE FIN AND THE STABILIZER TO THE FUSELAGE 1. 3. 2. 4. 5. 6. Put the in on the stabilizer and go on sanding at intersection area of in until the in it to the stabi- lizer as (photo 6). Note: In set up, require adjust so that the stabi- lizer has to parallel with the wing and It also has to perpendicular with the in. (Photo 7). Sanding clear the stain smoke at intersect place of stabilizer. (Photo 2,3). Put the stabilizer on the fuselage and go on sanding at intersection area until the stabilizer it to the fuselage as (photo 4,5). Locate and assemble the tap of in to the fuselage at center and straight (not devited center line) as (photo 1). 41 7. Sanding rounded bottom of rudder so that it look like seamless with fuselage. Attach rudder to in as (photo 8). 8. 9. 2. 1. ASSEMBLE THE PLASTIC SCALE PART TO THE FUSELAGE Locate and assemble sheet F36A, F36B to the plastic seat by CA glue. (Photo 1,2,3). Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc 42 Instruction Manual. 4. 3. 5. 7. 8. 6. 9. Cut of excess plastic part at two sides as (photo 4). Assemble the windshield for window (let and right) and top hatch. Step by step as instruction of (photo 5,6,7,8,9,10). Note: Please do this step ater the model was inished decorate by color Oracover coat. 43 10. FINAL ASSEMBLY. NOTE: To avoid scratching your new aero plane we suggest that you cover your work- bench with an old towel. Keep a couple of jars or bowls handy to hold the small parts af- ter you open the bags. Please trial it all parts. Make sure you have the correct parts and that they it and are aligned properly before gluing! his will ensure proper assembly as the Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc is made from natural materials and minor adjustments may have to be made. he paint and plastic parts used in this kit are fuel proof. However, they are not tolerant of many harsh chemicals including the following: paint thinner, cyanoacrylate glue accelerator, cyanoacrylate glue de-bonder and acetone. Do not let these chemicals come in contact with the colours on the cover- ing and the plastic parts. KIT CONTENTS 1 3 11 10 3 5 6 2 4 7 2 KIT CONTENTS. ADDITIONAL ITEMS REQUIRED. 0.91 cu.in 2-stroke. 4-stroke. Computer radio 5 channels with 8 servos. Glow plug to suit engine. Propeller to suit engine. Protective foam rubber for radio system. TOOLS & SUPPLIES NEEDED. hick cyanoacrylate glue. 30 minute epoxy. 5 minute epoxy. Hand or electric drill. Assorted drill bits. Modelling knife. Straight edge ruler. 2mm ball driver. Phillips head screwdriver. 220 grit sandpaper. 90° square or builder’s triangle. Wire cutters. Masking tape & T-pins. hread-lock. Paper towels. HINGING THE FLAP . . M2x10 mm M2x10 mm 1. Fuselage 2. Wing Set 3. Tail Set 4. Fiberglass Cowling 5. Main Landing Gear 6. Nose Landing Gear 7. Windshield and Window set 8. Decal 9. Pushrod Set 10. Wing tube 11. Fiberglass Wheel Pants Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc Instruction Manual. 44 1.00-1.25 cu.in HINGING THE AILERON. he control surfaces, including the ai- lerons, elevators, and rudder, are pre- hinged with hinges in stalled, but the hinges are not glued in place. It is im- perative that you properly adhere the hinges in place per the steps that fol- low using a high-quality thin C/A glue. Note : 1) Carefully remove the aileron from one of the wing panels. Note the position of the hinges. 2) Remove each hinge from the wing panel and aileron and place a T-pin in the center of each hinge. Slide each hinge into the aileron until the T-pin is snug against the aileron. his will help ensure an equal amount of hinge is on either side of the hinge line when the aileron is mounted to the wing panel. 3) Slide the aileron on the wing panel until there is only a slight gap. he hinge is now- centered on the wing panel and aileron. Re- move the T-pins and snug the aileron against the wing panel. A gap of 1/64” or less should be maintained between the wing panel and aileron. T-pin Hinge. 4) Delect the aileron and completely satu- rate each hinge with thin C/A glue. he ailer- ons front surface should lightly contact the wing during this procedure. Ideally, when the hinges are glued in place, a 1/64” gap or less will be maintained throughout the lengh of the aileron to the wing panel hinge line. he hinge is constructed of a special material that allows the C/A to wick or penetrate and distribute throughout the hinge, securely bonding it to the wood structure of the wing panel and aileron. Note : C/A glue 45 HINGING THE ELEVATOR. 5) Turn the wing panel over and delect the aileron in the opposite direction from the opposite side. Apply thin C/A glue to each hinge, making sure that the C/A pene- trates into both the aileron and wing panel. 6) Using C/A remover/debonder and a pa- per towel, remove any excess C/A glue that may have accumulated on the wing or in the aileron hinge area. 7) Repeat this process with the other wing panel, securely hinging the aileron in place. 8) Ater both ailerons are securely hinged, irmly grasp the wing panel and aileron to make sure the hinges are securely glued and cannot be pulled out. Do this by carefully ap- plying medium pressure, trying to separate the aileron from the wing panel. Use caution not to crush the wing structure. Work the aileron up and down sev- eral times to “work in” the hinges and check for proper movement. Note : Glue the elevator hinges in place using the same techniques used to hinge the ailerons. HINGING THE RUDDER. Glue the rudder hinges in place using the same techniques used to hinge the ailerons. Hinge. INSTALL THE AILERONS CONTROL HORN. Fiberglass control horn Epoxy Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc Instruction Manual. 46 . . . . INSTALL FLAP CONTROL HORN. . . Aileron control horn. Epoxy Install the lap control horn using the same method as same as the aileron control horns. Fiberglass control horn. Epoxy Aileron control horn. Epoxy INSTALL ELEVATOR CONTROL HORN. Fiberglass control horn. Epoxy Aileron control horn. Epoxy INSTALL RUDDER CONTROL HORN. Repeat steps to install the rudder control horn as same as steps done for ailerons. 47 . . Epoxy Rudder control horn. ENGINE MOUNT INSTALLATION. 1) Locate the items necessary to install the engine mount included with your model. 4x30 mm 2) Use four 4x30mm head bolts and four 4mm washers to attach the engine mount rails to the irewall. Tighten the screws . Make sure to use threadlock on the screws to help prevent them from vibrating loose. hread locker glue. INSTALLING THE S TOPPER ASSEMBLY 1) Using a modeling knife, carefully cut of the rear portion of one of the 3 nylon tubes leaving 1/2” protruding from the rear of the stopper. his will be the fuel pick up tube. 2) Using a modeling knife, cut one length of silicon fuel line. Connect one end of the line to the weighted fuel pick up and the other end to the nylon pick up tube. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc Instruction Manual. 48 Fuel fill tube. Fuel tank. Vent tube. Fuel pick up tube. Fuel fill tube. 3) Carefully bend the second nylon tube up at a 45º angle. his tube is the vent tube. 4) Test it the stopper assembly into the tank. It may be necessary to remove some of the lashing around the tank opening using a modeling knife. If lashing is present, make sure none falls into the tank. 5) With the stopper assembly in place, the weighted pick-up should rest away from the rear of the tank and move freely inside the tank. he top of the vent tube should rest just below the top of the tank. It should not touch the top of the tank. 6) When satisied with the alignment of the stopper assembly tighten the 3 x 20mm ma- chine screw until the rubber stopper expands and seals the tank opening. Do not over- tighten the assembly as this could cause the tank to split. FUEL TANK INSTALLATION. You should mark which tube is the vent and which is the fuel pickup when you attach fuel tubing to the tubes in the stopper. Once the tank is installed inside the fuselage, it may be diicult to determine which is which. 7) Slide the fuel tank into the fuselage. Guide the lines from the tank through the hole in the irewall. A 8) Use balsa block to hold in place the fuel tank with C/A glue to secure the fuel tank inside the fuselage. Fuel tank. Balsa. Vent tube. Fuel pick up tube. 9) Connect the lines from the tank to the en- gine and muler. he vent line will connect to the muler and the line from the clunk to the carburetor. 49 . Elevator servo. Rudder servo. . . Blow through one of the lines to ensure the fuel lines have not become kinked inside the fuel tank compartment. Air should low through easily. INSTALLING THE FUSELAGE SERVOS. Because the size of servos difer, you may need to adjust the size of the precut opening in the mount. he notch in the sides of the mount allow the servo lead to pass through. 1) Install the rubber grommets and brass collets onto the throttle servo. Test it the servo into the aileron servo mount. 2) Secure the servos with the screws provid- ed with your radio system. hrottle servo. THROTTLE SERVO ARM INSTALLATION. Install adjustable servo connector in the servo arm as same as picture below: Loctite secure. Adjustable Servo connector. Servo arm. 1 PCS Rudder servo arm. hrottle servo arm. Elevator servo arm. INSTALLING THE SWITCH. Install the switch into the precut hole in the side, in the fuselage. 3/32” Hole. Trim and cut Switch Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc Instruction Manual. 50 wheel collar. wheel. Axle. Washer. M3. M3. C/A glue. Landing Gear. wheel Pant. Locker glue. wheel Pant. wheel. Axle. M3. M3. wheel collar. nut. Washer. WHEELS AND WHEEL PANTS. 1) Assemble and mounting the landing gear, wheels to the wheel pants as shown inthe fol- lowing pictures. 2) Follow diagram below for wheel pant in- stallation: 3) A drop of C/A glue on the wheel collar screws will help keep them from coming lose during operation. Repeat the process for the other wheel. 51 . INSTALLING THE MAIN LANDING GEAR. 1) he blind nuts for securing the landing gear are already mounted inside the fuselage. 2) Using the hardware provided, mount the main landing gear to the fuselage. MOUNTING THE ENGINE. 1) Position the engine with the drive washer (150mm) forward of the irewall as shown. 2) Use a pin drill and 4mm drill bit to drill a small indentation in the mount for the en- gine mounting screw. 4x20 mm 150mm 3) Use a drill to drill the four holes in the engine mount rails. 4) On the ire wall has the location for the throttle pusshrod tube (pre-drill). 5) Slide the pushrod tube in the irewall and guide it through the fuel tank mount. Use medium C/A to glue the tube to the irewall and the fuel tank mount. 6) Connect the Z-bend in the 600mm throt- tle pushrod to the outer hole of the carbure- tor arm. 7) Slide the throttle pushrod wire into the tube. Position the engine between the mounts. Use four M4x30mm machine screws to secure the engine to the mount as shown. 4 mm Pushrod tube hole. Machine screw M4x30mm Pushrod tube hole. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc Instruction Manual. 52 Drill 4mm. 8) Move the throttle stick to the closed posi- tion and move the carburetor to closed. Use a 2.5mm hex wrench to tighten the screw that secures the throttle pushrod wire. Make sure to use threadlock on the screw so it does not vibrate loose. LANDING GEAR INSTALLATION. A. NOSE GEAR: 1)Locate the items necessary to attach the nose landing gear that are included with your model. hread locker glue. hread locker glue. 53 4mm hole. Axle. wheel collar. wheel. Screw. 2)Install landing gear at the top Fuselage. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc Instruction Manual. 54 Trim and cut. Trim and cut. Screw. Drill hole 4mm. COWLING 1) Please see below pictures then trim and cut as shown. Install lights at the top Cowling M3 lock nut . M3 clevis. 225 mm M3 Pushrod. 55 Epoxy. Because of the size of the cowl, it may be nec- essary to use a needle valve extension for the high speed needle valve. Make this out of suf- icient length 1.5mm wire and install it into the end of the needle valve. Secure the wire in place by tightening the set screw in the side of the needle valve. . 2) While keeping the back edge of the cowl lush with the marks, align the front of the cowl with the crankshat of the engine. he front of the cowl should be positioned so the crankshat is in nearly the middle of the cowl opening. Use the spinner backplate as a guide. Hold the cowl irmly in place using pieces of masking tape. 3) Install the muler and muler extension onto the engine and make the cutout in the cowl for muler clearance. Connect the fuel and pressure lines to the carburetor, muler and fuel iller valve. Secure the cowl to fuse- lage using the M3x10mm screws. Needle valve Machine screw M3x10mm ELECTRIC POWER CONVERSION. 1) Locate the items neccessary to install the electric power conversion included with your model. 2) Recommendation EP parts as shown (not included with your model). - Model size: .60 size models - Motor: 50mm 400 rev per volt - Propeller: 14x10 ~ 15x10 - ESC: 60A - Lipo Batteries: 6 cell 5000mA 3) Attach the electric motor box to the irewall suitable with the cross lines drawn on the electric motor box and irewall. Using epoxy and balsa stick to secure the motor box to the irewall. Please see pictures below. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc Instruction Manual. 56 M4x20mm 4) Attach the motor to the front of the electric motor box using four 4mm blind nut, four M3x15mm hex head bolts to se- cure the motor. Please see picture shown. 4mm Blind nut. M3x15mm 150mm Balsa stick. Epoxy. Electric motor. 57 Battery. INSTALLING THE SPINNER. Install the spinner backplate, propeller and spinner cone. he propeller should not touch any part of the spinner cone. If it does, use a sharp modeling knife and carefully trim away the spinner cone where the propeller comes in contact with it. 5) Attach the speed control to the side of the motor box using two-sided tape and tie wraps. Connect the appropriate leads from the speed control to the mo- tor. Make sure the leads will not interfere with the operation of the motor. Speed control. INSTALLING THE AILERON - FLAP SERVOS. Servos. Small weight. Thread. Because the size of servos difer, you may need to adjust the size of the precut opening in the mount. he notch in the sides of the mount allow the servo lead to pass through. 1) Using a small weight (Weighted fuel pick- up works well) and string, feed the string through the wing as indicated. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc Instruction Manual. 58 . . 2) Place the servo between the mounting blocks and space it from the hatch. Use a pencil to mark the mounting hole locations on the blocks. 3) Use drill bit in a pin vise to drill the mout- ing holes in the blocks. 4) Apply 2-3 drops of thin C/A to each of the mounting holes. Allow the C/A to cure with- out using accelerator. 5) Use dental loss to secure the connection so they cannot become unplugged. 6) Secure the servo to the aileron hatch using Phillips screwdriver and the screws provided with the servo. 7) Apply 1-2 drops of thin C/A to each of the mounting tabs. Allow the C/A to cure with- out using accelerator. 8) A string has been provided in the wing to pull the aileron lead through to the wing root. Remove the string from the wing at the servo location and use the tape to attach it to the servo extension lead. Pull the lead through the wing and remove the string. 59 9) Set the aileron hatch in place and use a Phillips screw driver to install it with four wood screws. M3 lock nut. M3 clevis. 100mm. . M2 lock nut. AILERON PUSHROD HORN INSTALLATION. Aileron Wing INSTALLING THE FLAP SERVO. Repeat the procedure for the aileron servo. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc Instruction Manual. 60 M2 lock nut. M3 lock nut. M3 clevis. 90mm. Flap Wing INSTALLING THE HORIZONTAL STABILIZER. 1) Using a ruler and a pen, locate the center- line of the horizontal stabilizer, at the trailing edge, and place a mark. Use a triangle and extend this mark, from back to front, across the top of the stabilizer. Also extend this mark down the back of the trailing edge of the stabilizer. Draw center line. 2) Using a modeling knife, carefully remove the covering at mounting slot of horizontal stabilizer ( both side of fuselage). Cut 3) Slide the stabilizer into place in the precut slot in the rear of the fuselage. he stabilizer should be pushed irmly against the front of the slot. 4) With the stabilizer held irmly in place, use a pen and draw lines onto the stabilizer where it and the fuselage sides meet. Do this on both the right and let sides and top and bottom of the stabilizer. Pen 5) Remove the stabilizer. Using the lines you just drew as a guide, carefully remove the covering from between them using a mod- eling knife. 61 Trim and cut When cutting through the covering to remove it, cut with only enough pressure to only cut through the covering itself. Cutting into the balsa structure may weaken it. 6) Using a modeling knife, carefully remove the covering that overlaps the stabilizer mounting platform sides in the fuselage. Re- move the covering from both the top and the bottom of the platform sides. Epoxy 7) When you are sure that everything is aligned correctly, mix up a generous amount of 30 Minute Epoxy. Apply a thin layer to the top and bottom of the stabilizer mounting area and to the stabilizer mounting platform sides in the fuselage. Slide the stabilizer in place and realign. Double check all of your measurements once more before the epoxy cures. Hold the stabilizer in place with T-pins or masking tape and remove any excess epoxy using a paper towel and rubbing alcohol. INSTALLING VERTICAL FIN. 1) Using a modeling knife, remove the cov- ering from over the precut hinge slot cut into the lower rear portion of the fuselage. Remove covering Fill epoxy. 2) While holding the vertical stabilizer irm- ly in place, use a pen and draw a line on each side of the vertical stabilizer where it meets the top of the fuselage. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc Instruction Manual. 62 Epoxy. 90º Vertical Stabilizer. Horizontal Stabilizer. . Fill epoxy 3) Slide the vertical stabilizer back in place. Using a triangle, check to ensure that the ver- tical stabilizer is aligned 90º to the horizontal stabilizer. 4) When you are sure that everything is aligned correctly, mix up a generous amount of Flash 30 Minute Epoxy. Apply a thin lay- er to the mounting slot and to bottom of the vertical stabilizer mounting area. Ap- ply epoxy to the bottom and top edges of the iller block and to the lower hinge also. Set the stabilizer in place and realign. Dou- ble check all of your measurements once more before the epoxy cures. Hold the sta- bilizer in place with T-pins or masking tape and remove any excess epoxy using a paper towel and rubbing alcohol. Allow the epoxy to fully cure before proceeding. ELEVATOR PUSHROD INSTALLATION. 1) Install the elevator control horn using the same method as with the aileron control horns. 2) Position the elevator control horn on the both side of elevator. Elevator control horn Elevator control horn 3) hread one clevis and M2 lock nut on to each elevator control rod. hread the horns on until they are lush with the ends of the control rods. 4) Elevator and rudder pushrods assembly as pictures below. 63 M2 lock nut. M2 clevis. 810mm. . Elevator pushrod. Elevator pushrod. M2 lock nut. M2 clevis. 810mm. 820 mm RUDDER PUSHROD INSTALLATION. Rudder control horn M2 lock nut. M2 clevis. 810mm. M2 lock nut. M2 clevis. . 840 mm 810 mm Rudder pushrod. INSTALLATION PILOT AND CANOPY. 1) Locate items necessary to install pilot and canopy. 2) A scale pilot is included with this ARF. he Seagull Pilot included itting well to the cockpit. (or you can order others scale pilot igures made by SG Models. hey are available at SG Models distributors.) If you are going to install a pilot igure, please use a sanding bar to sand the base of the igure so that it is lat. 3) Position the pilot igure on the canopy loor as show. Locate the oval shaped on the canopy loor and remove the covering. Use epoxy to glue this into the base of the pilot igure and glue the cockpit panel in place with C/A glue, please see pictures as shown. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc Instruction Manual. 64 Epoxy. Epoxy. C/A glue. 4) Position the canopy onto the fuselage. Trace around the canopy and onto the fuse- lage using a felt-tipped pen. . . C/A glue Receiver. APPLY THE DECALS. 1) If all the decals are precut and ready to stick. Please be certain the model is clean and free from oily ingerprints and dust. Position decal on the model where desired, using the photos on the box and aid in their location. 2) If all the decals are not precut, please use scissors or a sharp hobby knife to cut the decals from the sheet. Please be c ertain the model is clean and free from oily ingerprints and dust. Position decal on the model where desired, using the photos on the box and aid in their location. INSTALLING THE BATTERY- RECEIVER. 1) Plug the servos leads and the switch lead into the receiver. Plug the battery pack lead into the switch also. 2) Wrap the receiver and battery pack in the protective foam rubber to protect them from vibration. 3) Route the antenna in the antenna tube in- side the fuselage and secure it to the bottom of fuselage using a plastic tape. Battery. M4x15 mm 65 Wing tube. ATTACHMENT WING-FUSELAGE. Attach the aluminium tube into fuselage. Insert two wing panels as pictures below. Wing bolt. Antennas. Installation Antenas. INSTALLATION WING- FUSELAGE STRUTS. Wing. Remove covering. Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc Instruction Manual. 66 Wing. Wing. M3x25mm. Fuselage. M3x25mm. BALANCING. 1) It is critical that your airplane be bal- anced correctly. Improper balance will cause your plane to lose control and crash. THE CENTER OF GRAVITY IS LOCATED 110 MM BACK FROM THE LEADING EDGE OF THE WING AT THE WING ROOT. 2) Mount the wing to the fuselage. Using a couple of pieces of masking tape, place them on the top side of the wing 110 mm back from the leading edge of the wing at the wing root. 67 3) Turn the airplane upside down. Place your ingers on the masking tape and carefully lit the plane . Accurately mark the balance point on the top of the wing on both sides of the fuse- lage. he balance point is located 110 mm back from the leading edge of the wing at the wing root. his is the balance point at which your model should balance for your irst lights. Later, you may wish to experiment by shiting the balance up to 10mm forward or back to change the lying characteristics. Moving the bal- ance forward may improve the smooth- ness and arrow- like tracking, but it may then require more speed for take of and make it more diicult to slow down for landing. Moving the balance at makes the model more agile with a lighter and snappier ”feel”. In any case,please start at the location we recommend . With the wing attached to the fuse- lage, all parts of the model installed ( ready to ly), and empty fuel tanks, hold the model at the marked bal- ance point with the stabilizer level. Lit the model. If the tail drops when you lit, the model is “tail heavy” and you must add weight* to the nose. If the nose drops, it is “nose heavy” and you must add weight* to the tail to balance. *If possible, irst attempt to balance the model by changing the position of the re- ceiver battery and receiver. If you are un- able to obtain good balance by doing so, then it will be necessary to add weight to the nose or tail to achieve the proper balance point. 110MM CONTROL THROWS. Ailerons: High Rate : Up : 18 mm Down : 18 mm Low Rate : Up : 12 mm Down : 12 mm Elevator: High Rate : Up : 20 mm Down : 20 mm Low Rate : Up : 15 mm Down : 15 mm Rudder: High Rate : Right : 30 mm Left : 30 mm Low Rate : Right : 25 mm Left : 25 mm Flap: Mid : 25 mm Full : 35 mm Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc Instruction Manual. 68 FLIGHT PREPARATION. PREFLIGHT CHECK. Check the operation and direction of the elevator, rudder, ailerons and throttle. A) Plug in your radio system per the manufacturer’s instructions and turn eve- rything on. B) Check the elevator irst. Pull back on the elevator stick. he elevator halves should move up. If it they do not, lip the servo reversing switch on your transmitter to change the direction. C) Check the rudder. Looking from be- hind the airplane, move the rudder stick to the right. he rudder should move to the right. If it does not, lip the servo reversing switch on your transmitter to change the direction. D) Check the throttle. Moving the throt- tle stick forward should open the carbu- retor barrel. If it does not, lip the servo reversing switch on your transmitter to change the direction. E) From behind the airplane, look at the aileron on the right wing half. Move the aileron stick to the right. he right ailer- on should move up and the other aileron should move down. If it does not, lip the servo reversing switch on your transmitter to change the direction. 1) Completely charge your transmitter and receiver batteries before your irst day of lying. 2) Check every bolt and every glue joint in the CESSNA 152 to ensure that everything is tight and well bonded. 3) Double check the balance of the air- plane. Do this with the fuel tank empty. 4) Check the control surfaces. All should move in the correct direction and not bind in any way. 5) If your radio transmitter is equipped with dual rate switches double check that they are on the low rate setting for your irst few lights. 6) Check to ensure the control surfaces are moving the proper amount for both low and high rate settings. 7) Check the receiver antenna. It should be fully extended and not coiled up inside the fuselage. We wish you many safe and enjoyable lights with your 8) Properly balance the propeller. An out of balance propeller will cause excessive vibra- tion which could lead to engine and/or air- frame failure. 69 Master Scale Kit Edition Cessna 152 Aerobat 80”, 20cc