The World Models Manufacturing SPOT-ON 120 AEROBATICS Instruction Manual
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The World Models Manufacturing SPOT-ON 120 AEROBATICS Instruction Manual

1.10-1.40 cu. in. displacement 4-stroke
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1.10-1.40 cu. in. displacement 4-stroke
Requires : 4-channel radio w/ 5 standard servos
Wing Span
Wing Area
Flying Weight
Fuselage Length
Warning !This model is not a toy.
It is designed for maximum performance. Please seek advice if one is not familiar with this kind
of engine powered precision model. Operating this model without prior preparation may cause
injuries. Remember, safety is the most important thing. Always keep this instruction manual at
hand for quick reference.
Specifications
* Specifications are subject to change without notice.*
INSTRUCTION MANUAL
68 in / 1730 mm
852 sq in / 55 sq dm
8.8 lbs / 3980 g
70 in / 1780 mm
ALMOST-READY-TO-FLY (ARF) SERIES
FACTORY PRE-FABRICATED
MADE IN CHINA

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Summary of Contents for The World Models Manufacturing SPOT-ON 120 AEROBATICS

  • Page 1 INSTRUCTION MANUAL 1.10-1.40 cu. in. displacement 4-stroke Requires : 4-channel radio w/ 5 standard servos Specifications Wing Span 68 in / 1730 mm Wing Area 852 sq in / 55 sq dm Flying Weight 8.8 lbs / 3980 g Fuselage Length 70 in / 1780 mm * Specifications are subject to change without notice.* Warning !This model is not a toy.

  • Page 2: Before You Begin

    I N D E X BEFORE YOU BEGIN P. 1 PARTS LIST P. 2 ASSEMBLY P. 3 -11 SAFETY PRECAUTIONS P.11 BEFORE YOU BEGIN Read through the manual before you begin, so you will have an overall idea of what to do. Check all parts.

  • Page 3: Parts List

    Parts List 1. MAIN WING -- 1 pair 9. ENGINE MOUNT PL59111080 -- 1 set SOCKET HEAD SCREW M4x30mm -- 4 pcs 2. SCREW PM2x25mm -- 6 pcs WASHER d4xD9mm -- 4 pcs PUSHROD Ø1.8x110mm w/ Threads (For Aileron) -- 2 pcs CLEVIS (L) -- 2 pcs 10.

  • Page 4: Aileron Servo

    Main Wing Apply instant type CA glue to both sides of each hinge. Bottom View Aileron Servo Lead Completed Aileron Servo Ø1mm pilot holes for World Models Tri-horn are pre-drilled. P 2x mm Screw Please look for pin-hole marks at under side of control surfaces.
  • Page 5 Stabilizer & Elevator A3 12 d3 D7 Stabilizer Tube Washer A3 12 mm Screw ≈124mm ≈64mm d3 D7 mm Washer A’ A=A’ Apply instant type CA glue Bottom View to both sides of each hinge. M3x6mm Set Screw M3x6mm Set Screw Ø3x130mm A3 12 d3 D7...

  • Page 6: Elevator Pushrod

    Tail Landing Gear A3 12 mm Screw 1.5mm 2.6mm Collar 2.6mm Collar A3 12 3x3mm Set Screw Bottom View Elevator Pushrod Ø1mm pilot holes for World Models Tri-horn are pre-drilled. PM2x 0mm Screw Please look for pin-hole marks at under side of control surfaces.

  • Page 7: Rudder Pullwire

    Ø1mm pilot holes for World Models Tri-horn are Rudder Pullwire pre-drilled. Please look for pin-hole marks at under side of control surfaces. PM2x 5mm Screw Press down the center 1/3 portion Wire M2 Nut Copper Tube M2 Nut PM2x 5mm Main Landing Gear Wheel PM4x37mm Screw...
  • Page 8 Servo Set 3x3mm Set Screw Linkage Connector Washer Washer 2mm Washer 2m m Throttle Servo. Please refer to the attached sheet for linkage connector installation. Engine M4x45mm Socket Head Screw M4 Nylon Insert Lock Nut M4 Nylon Insert Lock Nut d4xD12mm Washer d4xD12mm Washer M4x45mm Socket Head Screw...

  • Page 9: Radio Equipment

    Radio Equipment Install and arrange the servo as shown in the diagram. Press down the center Copper Tube 1/3 portion Balsa Throttle Pushwire 5x5x42mm Balsa Receiver 5x5x56mm Plywood Fuel Tube 3x42.6x64mm Ø6x5mm Straper Straper 450cc Fuel Tank Front RIGGING Z BEND Cable Tie 270mm Switch Harness Battery Rudder Servo...
  • Page 10 Canopy First insert the grommet to the canopy then apply screw. d1.5xD6.5mm PWA2.3x8mm Screw Silicon Grommet d1.5xD6.5mm Silicon Grommet PWA2.3x8mm Apply Double-Sided Tape Please refer to the attached sheet for usage of the Cowling transparent 3D template. PWA2.6x8mm Screw PWA2.6x12mm Screw d1.5xD6.5mm Silicon Grommet First insert the grommet to the...
  • Page 11 Wing Setting Adjust the wing and fuselage configuration as shown in the diagrams. C = C ' A = A ' B = B ' P.10...
  • Page 12 Adjust the control throws as shown in the diagram. Control Throws These throws are good for general flying. You can adjust according to your personal preference. Elevator 18mm 18mm Rudder 35mm 35mm Ailerons 13mm 13mm The ideal C.G. position is 130mm (5.18 in.) behind the leading edge measured at where the wing C.G.
  • Page 13 LINKAGE CONNECTOR HW7111050 & HW7111060 Drill 2mm hole at servo horn. Insert linkage connector into servo horn. Make sure shoulder of screw is cleared from servo horn. Add washer to reduce play if necessary. Shoulder Tighten up the round nut against the shoulder.
  • Page 14 Usage of the transparent 3D template This transparent 3D template is used for position guidance of the actual cutting of the pre-painted cowling. Simply cut the transparent 3D template to fit your engine and exhaust pipe, then slide onto the actual cowling and use as template to mark the openings required for final cutting.
  • Page 15 A250R0805...

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