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P-51D Mustang Sport 40 ARF
Assembly Manual
56 pgs3.87 Mb0

Hangar 9 P-51D Mustang Sport 40 ARF Assembly Manual

Specications
Wingspan: .........................................................58.25 in (1480mm)
Length: ................................................................50.4 in (1281mm)
Wing Area: ................................................626 sq in (40.39 sq dm)
Weight: ........................................................... 6.5–7 lb (2.9–3.2 kg)
Radio: ...............................................4- to 6-channel w/5-8 servos
Engine: ................................................ .40–.46 2-stroke, Power 46
P-51D Mustang Sport 40 ARF
Assembly Manual
2 Hangar 9 P-51D Mustang Sport 40 Assembly Manual
Table of Contents
Installing the Fuel Tank, Cowling and
Spinner for Glow Installations .......................................18
Installing the Cowling and Spinner for
Electric Motor Installations ............................................23
Replacement Parts
1. HAN4426 Fuselage with Hatch and Canopy
2. HAN444002 Left Wing
3. HAN444003 Right Wing
4. HAN444004 Painted Cowl
5. HAN2830 Canopy with Painted Frame
6. HAN4435 Pilot Bust
7. HAN4429 Tail Set with Tail Wheel
8. HAN4437 Exhaust
9. HAN4438 31/2-inch (90mm) Wheels (pr)
10. HAN4432 Wing Tube
11. HAN4709 Tail Wheel
12. HAN444005 Fixed Landing Gear without Wheels (Includes mounting blocks, not shown)
Items not shown
HAN444010 Flap Stays HAN4434 Pushrod Set HAN4436 Decal Set HAN40M Engine Mount HAN2479 11 oz Fuel Tank HAN444006 Retract Wood Trays and Templates HAN444007 Landing Gear Doors, Left and Right
Contents of Kit and Parts Layout
1
2
10
7
3
4
5
6
11
7
9
9
12
12
8
3Hangar 9 P-51D Mustang Sport 40 Assembly Manual
Included Parts Listing
PACKAGED IN KIT
Fuselage with hatch 1 Left wing with flap and aileron 1 Right wing with flap and aileron 1 Horizontal stabilizer with elevator 1 Vertical fin and rudder with tail wheel 1 Fin fairing block 1 Fiberglass cowl 1 Clear cowl template 1 Canopy 1 Anodized aluminum wing tube 1 Exhaust stack (left and right) ea. 1 11 oz fuel tank 1 Painted pilot 1
FUSELAGE
#2 x 3/8 silver self-tapping screw 4 cowl #2 x 5/16 black self-tapping screw 4 exhaust Receiver plywood cover 1 Fuel tank plywood brace 1 Foam cushion 5 receiver and receiver battery 4-40 x 5/8 socket head cap screw 2 fuel tank brace #4 washer 2 fuel tank brace #2 x 3/8 self-tapping screw 4 receiver cover Hook and loop straps 2 EP battery Throttle pushrod plywood support 1 4-stroke Throttle pushrod housing 1 4-stroke
WINGS
Nylon clevis 4 ailerons and flaps 2
5
/8inch (67mm) pushrod 2 aileron 3-inch (76mm) pushrod 2 flap #2 x 5/16 black self-tapping screw 16 aileron and flap hatch Wood servo blocks 8 aileron and flap servos 4-40 x 3/4 socket head cap screw 2 wing attachment #4 flat washer 2 wing attachment #4 lock washer 2 wing attachment
RUDDER & ELEVATOR
Nylon clevis 2 rudder and elevator Safety tubing 2 rudder and elevator 23
1
/4-inch (590mm) pushrod 1 elevator
26-inch (660mm) pushrod 1 rudder
ENGINE & MOTOR
Metal engine mount with hardware 1 Nylon clevis 1 throttle Safety tubing 2 throttle 15
5
/8-inch (397mm) pushrod 1 throttle Brass pushrod connector with hardware 1 throttle 40mm EP standoff 4 EP motor 8-32 x 1/4 machine bolt 4 EP mounts 8-32 blind nut 4 EP mounts #8 flat washer 4 EP mounts #8 lock washer 4 EP mounts
LANDING GEAR
Fixed gear wire struts 2 landing gear Fixed gear mounting block 2 landing gear 3
1
/2-inch (90mm) main wheel 2 landing gear 6-32 x 1/2 socket head cap screw 8 landing gear #6 flat washer 8 landing gear Threadlock 1 Allen wrenches 2 landing gear 5mm wheel collar with setscrew 4 landing gear #2 x 3/8 silver self-tapping screw 4 retract servo tray Nylon clevis 1 retracts 1
1
/4-inch (32mm) pushrod 1 retracts Retract servo wood tray 1 retracts Air cylinder support tray 1 retracts Wood template 1 retracts Gear door (left and right) 2 Wire tie 4 gear doors
4 Hangar 9 P-51D Mustang Sport 40 Assembly Manual
Important Information
Regarding Warranty
Please read our Warranty and Liability Limitations section on page 49 before building this product. If you as the purchaser or user are not prepared to accept the liability associated with the use of this Product, you are advised to return this Product immediately in new and unused condition to the place of purchase.
Recommended Setup–2-Stroke Glow
• Evolution® .46NX with Muffler (EVOE0461)
• Evolution Propeller 11 x 5 (EVO10050) or
10 x 6 (EVO11060)
• 2
3
/4-inch 2-blade Spinner, Red (DUB292)
• Exhaust Diverter (DUB697) (Optional)
Recommended Setup–4-Stroke Glow
• Saito 82 (SAIE082aGK)
• 13 x 8 propeller (EVOE13080)
• 2
3
/4-inch 2-blade Spinner, Red (DUB292)
Recommended Setup–
Electric Power (EP)
• E-flite® Power 46 BL Outrunner Motor (EFLM4046A)
• 60-Amp Pro Switch-Mode BEC Brushless ESC
(EFLA1060)
• Thunder Power 4S 3850–4500mAh Li-Po Battery Pack
• APC Propeller 13x6.5-inch (APC13065E) or
14x7 (APC14070E)
• 2
3
/4-inch 2-blade Spinner, Red (DUB292)
Transmitter Requirements
The P-51D Mustang requires a minimum of a 6-channel radio to operate all the functions of your aircraft. We suggest the following radio systems available through Horizon Hobby or your local hobby distributor.
Spektrum DX6i SPM6600 Spektrum DX7 SPM2710 JR Systems X9303 2.4GHz JRP2915 JR Systems 12X 2.4GHz JRP1200
Radio Equipment Requirements -
6-Channel Receiver
The following items are recommended when installing the 6-Channel AR6200 receiver (SPMAR6200) in your aircraft:
DS821 Digital Sport Servo (5–8) JRPS821 (Note: One less servo required for EP version)
3-inch Servo Extension (Retract) JSP98100 6-inch Servo Extension (ESC) JSP98020 9-inch Servo Extension (2) (Ailerons) JRPA097 Y-harness (2) JSP98020 Receiver Battery, 6-volt, 2700mAh JRPB5008 JR Chargeswitch JRPA004 or JR Switch JRPA005
Ailerons: DS821 Servo (2)
• Y-harness (plugged into receiver)
• 9-inch Extension (connected to servo) (2)
Elevator: DS821 Servo
Rudder: DS821 Servo
Throttle: DS821 Servo
Note: ESC will require a 6-inch extension plugged
into the receiver
Optional Flaps: DS821 Servo (2)
• Y-harness (plugged into receiver)
Optional Retracts: DS821 Servo
• 3-inch Extension (plugged into receiver)
Note: Retracts can also use an MN48 servo (JSP20040) when using the included plywood servo adapter.
Radio Equipment Requirements -
7-Channel Receiver
The following items are recommended when installing the 7-Channel AR7000 receiver (SPM6070) in your aircraft:
DS821 Digital Sport Servo (5–8) JRPS821 (Note: One less servo required for EP version)
3-inch Servo Extension (Retract) JSP98100 6-inch Servo Extension (3) (ESC, Ailerons) JSP98020 9-inch Servo Extension (2) (Ailerons) JRPA097 Y-harness JSP98020 Receiver Battery, 6-volt, 2700mAh JRPB5008 JR Chargeswitch JRPA004 or JR Switch JRPA005
Ailerons: DS821 Servo (2)
• 6-inch Extension (plugged into receiver) (2)
• 9-inch Extension (connected to servo) (2)
Elevator: DS821 Servo
Rudder: DS821 Servo
Throttle: DS821 Servo
Note: ESC will require a 6-inch extension plugged
into the receiver
Optional Flaps: DS821 Servo (2)
• Y-harness (plugged into receiver)
Optional Retracts: DS821 Servo
• 3-inch Extension (plugged into receiver)
Note: Retracts can also use an MN48 servo (JSP20040) when using the included plywood servo adapter.
The Spektrum trademark is used with permission
of Bachmann Industries, Inc.
5Hangar 9 P-51D Mustang Sport 40 Assembly Manual
Radio Equipment Requirements -
9-Channel Receiver
The following items are recommended when installing the 9-Channel AR9000 receiver (SPMAR9000) in your aircraft:
DS821 Digital Sport Servo (5–8) JRPS821 (Note: One less servo required for EP version)
3-inch Servo Extension (Retract) JSP98100 6-inch Servo Extension (5) (ESC, Ailerons) JSP98020 9-inch Servo Extension (2) (Ailerons) JRPA097 Receiver Battery, 6-volt, 2700mAh JRPB5008 JR Chargeswitch JRPA004 or JR Switch JRPA005
Ailerons: DS821 Servo (2)
• 6-inch Extension (plugged into receiver) (2)
• 9-inch Extension (connected to servo) (2)
Elevator: DS821 Servo
Rudder: DS821 Servo
Throttle: DS821 Servo
Note: ESC will require a 6-inch extension plugged
into the receiver
Optional Flaps: DS821 Servo (2)
• 6-inch Extension (plugged into receiver) (2)
Optional Retracts: DS821 Servo
• 3-inch Extension (plugged into receiver)
Note: Retracts can also use an MN48 servo (JSP20040) when using the included plywood servo adapter.
Optional Retracts
Robart Spring Down includes prebent struts and air installation kit (HANP51)
23/4-inch (70mm) Main Wheels (HAN305) Robart Air Pump (ROB164G) DS821 Digital Sport Servo (JRPS821) or MN48 Mini Servo (JSP20040)
Field Equipment Required
• Fuel (15% recommended)
• Long Reach Glow Plug Wrench (HAN2510)
• Metered Glow Driver with Ni-Cd & Charger (HAN7101)
• 2-Cycle Sport Plug (EVOGP1)
• Manual Fuel Pump (HAN118)
Optional Field Equipment
• Self-stick weights, 6 oz (HAN3626)
• PowerPro 12V Starter (HAN161)
• 12V 7Ah Sealed Battery (HAN102)
• Power Panel (HAN106)
• Blue Block After Run Oil (EVOX1001)
• Cleaner and towels
Additional Required Tools
Drill File Pin vise Pliers Ruler Hobby scissors Side cutters Epoxy brushes Felt-tipped pen Rotary tool Sanding drum String/dental floss Mixing sticks Mixing cups Paper towels Rubbing alcohol Covering iron Small clamps Hook and loop tape Pencil Hobby knife with #11 blade Medium grit sandpaper Phillips screwdriver: #1, #2 Low-Tack Tape (MMM209034) Box end or open end wrench: 12mm Hex wrench or ball driver: 3/32-inch Drill bit: 1/16-inch (1.5mm), 5/64-inch (2mm),
13/64-inch (5mm)
Additional Required Adhesives
Canopy Glue (PAAPT56) Medium CA (PAAPT02) Thin CA (PAAPT08) Threadlock (PAAPT42) 30-Minute Epoxy, 8 oz (PAAPT39) Hinge Glue (PAAPT55)
UltraCote® Covering Colors
• Black HANU874
• White HANU870
• Silver HANU881
• Cub Yellow HANU884
• True Red HANU866
• Olive Drab HANU904
Using the Manual
This manual is divided into sections to help make assembly easier to understand, and to provide breaks between each major section. In addition, check boxes have been placed next to each step to keep track of each step completed. Steps with a single box () are performed once, while steps with two boxes () indicate that the step will require repeating, such as for a right or left wing panel, two servos, etc. Remember to take your time and follow the directions.
Before Starting Assembly
Before beginning the assembly of your model, remove each part from its bag for inspection. Closely inspect the fuselage, wing panels, rudder and stabilizer for damage. If you find any damaged or missing parts, contact the place of purchase.
If you find any wrinkles in the covering, use a heat gun or covering iron to remove them. Use caution while working around areas where the colors overlap to prevent separating the colors.
HAN100 – Heat Gun
HAN150 – Covering Glove
HAN101 – Sealing Iron
HAN141 – Sealing Iron
Sock
6 Hangar 9 P-51D Mustang Sport 40 Assembly Manual
Preparing the Fuselage for
Electric Power
Required Parts
Fuselage
Required Tools and Adhesives
Drill bit: 7/32-inch (5.5mm) Drill Hobby knife with #11 blade Rotary tool with sanding drum
Before beginning the assembly of your model you should decide if you will be installing an electric or glow power system. If you opt to install the electric system, you will need to prepare the firewall at this time to provide cooling for the speed control and battery, and drill the holes for the blind nuts to mount the electric motor.
Step 1
Use a drill and 7/32-inch (5.5mm) drill bit to drill the four holes in the firewall for the blind nuts. The location has been etched in the firewall.
Step 2
Use a hobby knife and rotary tool with a sanding drum to remove the three areas on the firewall to allow cooling air to pass into the fuselage for cooling.
Step 3
It may be necessary to remove the covering from the bottom of the fuselage to allow cooling air to exit the fuselage when using older batteries. If you are using the new Thunder Power Generation 2 batteries or equivalent then the cooling hole is not mandatory.
5-inch
(127mm)
3-inch
(76mm)
2-inch
(51mm)
Front of Fuselage
Installing the Main Radio System
Required Parts
Fuselage Foam: 1/4-inch (6mm) Plywood receiver hatch Pre-cut foam (thin) (2) Pre-cut foam (thick) (2) Pre-cut foam for receiver Servo with hardware (2) (3 for glow engine installations) Switch harness Receiver battery #2 x 3/8-inch self-tapping screws (4)
Required Tools and Adhesives
Phillips screwdriver: #1 Thin CA Hook and loop tape
Servo Extension Options
6-Channel receiver: Y-harness (ailerons) Y-harness (flaps) 3-inch (76mm) extension (retracts) 6-inch (152mm) extension (electronic speed control)
7-Channel receiver 6-inch (152mm) (2) (ailerons) Y-harness (flaps) 3-inch (76mm) extension (retracts) 6-inch (152mm) extension (electronic speed control)
9-Channel receiver 6-inch (152mm) (2) (ailerons) 6-inch (152mm) (2) (flaps) 3-inch (76mm) extension (retracts) 6-inch (152mm) extension (electronic speed control)
7Hangar 9 P-51D Mustang Sport 40 Assembly Manual
Step 1
Locate the items necessary to install the receiver battery and receiver in the fuselage.
Step 2
Remove the canopy hatch from the fuselage by sliding the hatch pin forward. Lift the hatch from the rear and slide rearward to remove.
Hint: Place a drop of light oil in the hatch pin from the inside of the canopy hatch so it will operate smoothly.
Step 3
Mount the switch to the side of the fuselage using the hardware provided with the switch. Use a #1 Phillips screwdriver to tighten the screws.
Step 4
Use a #1 Phillips screwdriver to thread one of the servo mounting screws into the holes in the radio tray as shown. This will cut threads in the plywood for the next step.
Step 5
Apply 2–3 drops of thin CA in each hole to harden the threads. This and the previous step prepares the plywood for the screws so they will have a lower chance of vibrating loose.
Step 6
Prepare the rudder and elevator servos by removing the stock servo horns from the servos using a #1 Phillips screwdriver. Install the grommets and brass eyelets in the servos according to the instructions provided with the servos or your radio system.
Hint: If you are installing a glow engine, prepare a third servo for use as the throttle servo.
8 Hangar 9 P-51D Mustang Sport 40 Assembly Manual
Step 7
Secure the servos in the radio tray using the screws provided with the servos. Tighten the screws using a #1 Phillips screwdriver. Orient the output of the rudder and elevator servos as shown in the photo below.
Step 8
If you are installing a glow engine, install the throttle servo at this time.
Step 9
Wrap the receiver battery in foam. Slide the receiver battery into the fuselage under the fuel tank/battery tray. Make sure the battery can not move by using more foam to secure its position in the fuselage. Connect the lead from the battery to the receiver at this time as well.
Step 10
Place the thicker piece of pre-cut foam included with your model in the area for the receiver.
Step 11
Next, place the pre-cut foam with the opening for the receiver in the receiver area.
Step 12
Plug the battery, rudder, elevator and throttle servo leads in the appropriate ports of the receiver.
Note 1: If you are using a computer radio, you can mix the ailerons (and flap channels) and use four 6-inch (152mm) extensions plugged into the aileron, flap and auxiliary ports of the receiver. If not, you can also use two Y-harnesses (flap and aileron) at this time.
Note 2: If you are installing retracts, plug a 3-inch (76mm) extension in the gear/retract port of the receiver.
Note 3: If you are building your model for use with an electric power system, plug a 6-inch (152mm) extension in the throttle port of the receiver.
9Hangar 9 P-51D Mustang Sport 40 Assembly Manual
Step 13
Place the receiver in the opening in the foam. Make sure the antennas on the receiver are straight to allow for the best reception of radio signals. Tuck the servo leads neatly in the fuselage.
Note 1: Some receivers may require the foam to be cut to fit properly.
Note 2: If you are using a 2.4GHz radio system, it is recommended to bind the receiver to the transmitter at this time and check the operation of the servos that are plugged into the receiver. Follow the instructions provided with your radio for the procedure to bind the receiver to the transmitter if necessary.
Step 14
Place the remaining pre-cut foam over the receiver to fill the receiver area. The amount of foam will be dependant on your choice of receiver.
Step 15
Secure the receiver hatch in place using four #2 x 3/8-inch self-tapping screws and a #1 Phillips screwdriver. Note the location of the blind nuts in the receiver hatch in the photo.
NOTE: SPECIAL CONSIDERATION FOR ELECTRIC MODELS
EP Step A
When installing an electric power system you must install the hook and loop straps that secure the motor battery. The first strap is placed in the forward of the fuselage as shown.
EP Step B
The second strap is installed in the receiver hatch before it is placed in the fuselage.
Step 16
Mount the remote receiver inside the fuselage using hook and loop material. Note the direction of the antenna on the receiver.
10 Hangar 9 P-51D Mustang Sport 40 Assembly Manual
Installing the Rudder and Elevator
Pushrods
Required Parts
Fuselage assembly Clevis (2) Clevis retrainer (2) 23
1
/4-inch (590mm) elevator pushrod 26-inch (660mm) rudder pushrod Servo horn, 180-degree (2)
Required Tools and Adhesives
Drill bit: 5/64-inch (2mm) Pin vise Phillips screwdriver: #1 Side cutter
Step 1
Locate the items necessary to install the rudder and elevator pushrods in your model.
 Step 2
Use a pin vise and 5/64-inch (2mm) drill bit to enlarge the hole in the servo horn that is 5/8-inch (15mm) from the center of the horn as shown.
 Step 3
Use side cutters to remove the remaining arm from the servo horn so it doesn’t interfere with the operation of the servos.
 Step 4
Slide the 231/4-inch (590mm) elevator pushrod into the tube in the fuselage.
 Step 5
Insert the bend in the pushrod wire through the hole in the servo horn. With the radio on and the elevator servo centered, secure the servo horn to the elevator servo using the screw from the servo and a #1 Phillips screwdriver.
11Hangar 9 P-51D Mustang Sport 40 Assembly Manual
Step 6
Repeat Steps 2 through 5 to install and connect the 26-inch (660mm) rudder pushrod.
Step 7
Slide a clevis retainer on one of the nylon clevises.
Step 8
Thread the clevis 12-turns on the rudder pushrod. The exact position of the clevis will be adjusted once the tail has been bolted to the fuselage.
Step 9
Thread the clevis 12-turns on the elevator pushrod. The exact position of the clevis will be adjusted once the tail has been bolted to the fuselage.
Installing the Tail Surfaces
Required Parts
Fuselage assembly Stabilizer/elevator Rudder/fin Fin fairing block
Required Tools and Adhesives
Nut driver: 7/32-inch or adjustable wrench Ruler
Step 1
Remove the foam that protects the airframe from damage on the rudder and elevator.
12 Hangar 9 P-51D Mustang Sport 40 Assembly Manual
Step 2
Locate the rudder/fin assembly. Use a 7/32-inch nut driver to remove the nuts and washers from the threaded rods on the bottom of the fin. Slide the fuselage fairing on the bottom of the fin as shown.
Note: The fuselage fairing is not glued in place. Make sure to keep the fairing in position when installing the stabilizer.
Step 3
Position the stabilizer/elevator assembly so the control horn will face down, away from the fin. The threaded rods from the rudder/fin assembly will slide into the two holes in the stabilizer.
Step 4
Slide the stabilizer/fin assembly into position on the fuselage. The stabilizer will rest tightly against the fuselage, and the fin will rest snug against the top of the stabilizer.
Step 5
Place the washers then thread the nuts on the rods. Tighten the nuts snugly against the bottom of the fuselage using a nut driver or an adjustable wrench. Do not over-tighten the nuts.
13Hangar 9 P-51D Mustang Sport 40 Assembly Manual
Note: The nuts should be sufficiently tight enough to not allow for rotation of the stab under slight force. Avoid over-tightening the nuts and damaging the fuselage.
Step 6
Connect the clevis to the center hole of the rudder control horn. With the radio system on and the rudder servo centered, use a straight edge to make sure the rudder is aligned with the fin. Thread the clevis in or out until the rudder and fin are aligned.
Step 7
Connect the clevis to the center hole of the elevator control horn. With the radio system on and the elevator servo centered, use a straight edge to make sure the elevator is aligned with the stabilizer. Thread the clevis in or out until the stabilizer and elevator are aligned.
Note: Once the rudder and elevator are adjusted, slide the clevis retainer over the forks of the clevis so it does not open accidentally.
Installing the Glow Engine
Required Parts
Fuselage assembly Engine mount Engine mount strap (2) 8-32 locknut (4) #8 washer (4) Clevis Clevis retainer 3mm setscrew Brass pushrod connector Connector backplate Engine Servo horn, 180-degree 15
5
/8-inch (397mm) throttle pushrod 8-32 x 3/4-inch machine screw (4) 8-32 x 1-inch machine screw (4)
Required Tools and Adhesives
Threadlock Phillips screwdriver: #2 Drill bit: 5/64-inch (2mm) Pin vise Pliers Ruler Side cutter
1.5mm hex wrench (included)
Step 1
Locate the items necessary to attach the engine to the fuselage.
14 Hangar 9 P-51D Mustang Sport 40 Assembly Manual
If you are installing a four-stroke in your model you will also need to locate the following items.
Step 2
Cut the tip from the included threadlock vial. Slide a #8 washer on a 8-32 x 4/3-inch machine screw. Apply a drop of threadlock on the threads of the screw. Prepare four screws at this time.
Step 3
Attach the engine mount to the fuselage using the four screws prepared in the previous step.
Step 4
Locate the engine mount straps. Note that one side is smooth, while the other side has dimples. The smooth side will face up and away from the engine when installed.
Step 5
Slide a 8-32 x 1-inch machine screw through the engine mount strap from the smooth side. The screw then goes through the rear hole of the engine mount. Thread a 8-32 locknut on the screw from the underside of the engine mount. Install both engine mount straps at this time.
Step 6
Slide the engine into position. The engine mount straps will be on the top of the engine mount lugs as shown.
15Hangar 9 P-51D Mustang Sport 40 Assembly Manual
Step 7
Install an 8-32 x 1-inch machine screw through the mount and engine mount rail at the front of the mount. Thread an 8-32 locknut on the screw from the underneath of the engine mount. Position the engine so the drive washer is 49/16 inches (116mm) forward of the firewall.
SPECIAL CONSIDERATION FOR FOUR-STROKE INSTALLATION
Step A
You will need to drill the firewall to install the pushrod tube for the four-stroke throttle linkage. Use a pencil to mark the firewall in a location that aligns with the carburetor arm of your engine.
Step B
Remove the engine from the mount and drill a 5/32-inch (4mm) hole in the firewall at the mark made in the previous step. Use medium grit sandpaper to roughen the ends of the pushrod tube. Slide the pushrod tube into the hole so it is flush with the firewall. Use medium CA to glue the pushrod in position.
Step C
Cut the threaded end off the 155/8-inch (397mm) threaded pushrod. Use Z-bend pliers to make a Z-bend in the end where the threads were.
Step 8
Use a #2 Phillips screwdriver to tighten the screws evenly to secure the engine in the mount.
16 Hangar 9 P-51D Mustang Sport 40 Assembly Manual
Note: Skip Step 9 if you are installing a four-stroke engine.
Step 9
Slide a clevis retainer on one of the nylon clevises. Thread the clevis 12-turns on the 155/8-inch (397mm) threaded pushrod.
Step 10
Slide the pushrod into the pushrod tube in the firewall. Connect the clevis to the outer hole of the carburetor arm. Slide the clevis retainer over the forks of the clevis to keep it from opening accidentally.
NOTE: SPECIAL CONSIDERATION FOR FOUR-STROKE INSTALLATION
Step 10a
Insert the Z-bend made in the throttle pushrod in the outside hole of the carburetor arm. You may need to remove the carburetor arm or engine to slide the pushrod wire into the tube inside the fuselage.
Step 11
Use a pin vise and 5/64-inch (2mm) drill bit to enlarge the hole in the servo horn that is 5/8-inch (15mm) from the center of the horn as shown.
Step 12
Use side cutters to remove the remaining arm from the servo horn so it doesn’t interfere with the operation of the servos.
17Hangar 9 P-51D Mustang Sport 40 Assembly Manual
Step 13
Insert the brass pushrod connector in the hole made previously.
Step 14
Secure the pushrod connector using the nylon backplate. Use pliers to press the backplate into position.
NOTE: SPECIAL CONSIDERATION FOR FOUR-STROKE INSTALLATION
Step 14a
Slide the plywood pushrod guide on the throttle pushrod. Position the guide so it is placed as shown in the photo. Do not glue the guide at this time.
Step 15
Turn on the transmitter and receiver. Center the throttle stick and trim. Install the servo horn parallel to the servo center line as shown. This will provide equal travel from low to full throttle.
Step 16
Use the transmitter to move the servo to low throttle. Close the carburetor on the engine and use a 3mm x 3mm setscrew and 1.5mm hex wrench (included) to secure the pushrod to the pushrod connector.
Step 17
Use the transmitter to check that the carburetor will fully open. You may need to fine-tune the endpoints at the radio if it doesn’t open fully, or if the servo binds at full throttle.
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