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Instruction Manual

Specifications:Wingspan: 2210mm (87 in)Length: 1980mm (78 in)Wing area: 94.5 sq dm (1464.8 sq in)Flying weight: 7.1kg (15.6 lbs)Engine(not incl.): 50-60cc GasRadio (not incl.): 4 ch, 6 servosConstruction: Balsa and Plywood

Features:Designed for high performance scale aerobaticsHigh-quality balsa and plywood materialLight weight and strong constructionFoam brace on the back of fuselageEnhanced cowling mounting designHardware package includedHigh-quality, prepainter, fiberglass cowling and wheel pantsNice color scheme with professional covering

Item No: AL500

21

Appendix – Parts and OptionsTable of Contents

This is a sophisticated hobby Product and not a toy. It must be operated with caution and commonsense and requires some basic mechanical ability. Failure to operate this Product in a safe andresponsible manner could result in injury or damage to the Product or other property. This Product isnot intended for use by children without direct adult supervision. The Product manual containsinstructions for safety, operation and maintenance. It is essential to read and follow all theinstructions and warnings in the manual, prior to assembly, setup or use, in order to operate correctlyand avoid damage or injury.

This model is controlled by a radio signal that is subject to interference from many sources outsideyour control. This interference can cause momentary loss of control so it is advisable to always keepa safe distance in all directions around your model, as this margin will help to avoid collisions or injury.

Always operate your model in an open area away from cars, traffic, or people.Never operate the model into the street or populated areas for any reason.Never operate your model with low transmitter batteries.Carefully follow the directions and warnings for this and any optional support equipment (radio,engine, chargers, rechargeable battery packs, etc.) that you use.Keep all chemicals, small parts and anything electrical out of the reach of children.Moisture causes damage to electronics. Avoid water exposure to all equipment not specificallydesigned and protected for this purpose.

Safety Precautions and Warnings

We guarantee this kit to be free from defects in both material and workmanship at the date of purchase.

Limited Warranty & Limits of Liability

20 1

As a large model, the airplane is critical of proper battery use, control linkage setups and flyingtechniques. Please pay particular attention to the following areas.

Check the radio installation and make sure all the control surfaces are moving correctly (i.e. thecorrect direction and with the recommended throws). Test run the engine and make sure it transitionssmoothly from idle to full throttle and back. Also ensure the engine is tuned according to themanufacturer’s instructions, and it will run consistently and constantly at full throttle when adjusted.Check all the control horns, servo horns, and clevises to make sure they are secure and in goodcondition. Replace any items that would be considered questionable. Failure of any of thesecomponents in flight would mean the loss of your airplane.

Large models perform much more like full-size airplane than small models. If the airframe goes toofast, such as in a high throttle dive, it may fail. The model should be flown like a full-scale airplane.Throttle management is absolutely necessary.

Double-check the setscrews in all control horns to be sure they are very tight. Periodically checkthese to be sure they have not loosened over time. Always use threadlock on metal-to-metal fasteners.

Be sure adequate batteries are used to power the receiver. It is recommended that two identical6-volt receiver packs are used. Each pack must have a minimum of 2700mAh capacity. Use packsof 3000mAh when super high torque servos are used.

Always range check the radio system per the manufacturer's instructions before the initial test flightand periodically afterward.

ALWAYS use an ESV with a 1-amp load to check the receiver battery packs and the ignition packbefore each and every flight. If there is any doubt that the packs are questionable, DO NOT FLYuntil the packs are recharged.

Maintain the proper mechanical advantage on all control surface linkages.

Never attempt to make full throttle dives!

Hardware checks

Receiver Battery Selection

Range check

Check the voltage of the on-board packs

Preflight

Step 2Fully assemble the model. With a helper, lift the airplane with your index fingers to find the balancepoint. The balance point (CG) should lie between the two marks on the wing. If not, try to move someparts such as batteries to different position, or add the necessary weight to the nose or tail to obtainthe correct balance. Congratulations on the purchase of this model airplane. You will enjoy one of the most thrilling

experiences the radio control hobby has to offer.

The product is a professionally built, radio control model. It is very important that you operate thismodel responsibly. Please read this instruction manual thoroughly and follow the directions.

Introduction

This warranty does not cover cosmetic damage or damage due to acts of God, accident, misuse,abuse, negligence, commercial use, or modification of or to any part of the Product. This warrantydoes not cover damage due to improper installation, operation, or maintenance. This warranty islimited to the original purchaser and is not transferable. In no case shall our company’s liabilityexceed the original cost of the purchased product and will not cover consequential, incidental orcollateral damage. Our company reserves the right to inspect any and all equipment involved in awarranty claim. Repair or replacement decisions are at the sole discretion of our company. Further,our company reserves the right to change or modify this warranty without notice.

As our company has no control over use, setup, final assembly, modification or misuse, no liabilityshall be assumed nor accepted for any resulting damage or injury. By the act of use, setup orassembly, the user accepts all resulting liability.

REPAIR OR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS THE EXCLUSIVEREMEDY OF THE CONSUMER.

If you as the purchaser or user are not prepared to accept the liability associated with theuse of this product, you are advised to return this product immediately in new and unusedcondition to the place of purchase.

AL50001 Fuselage for 50cc Extra 330LAL50002 Fiberglass Painted Cowling for 50cc Extra 330LAL50003 Canopy for 50cc Extra 330LAL50004 Rudder for 50cc Extra 330LAL50005 Left Wing Panel w/ Aileron for 50cc Extra 330LAL50006 Right Wing Panel w/ Aileron for 50cc Extra 330LAL50012 Left Stabilizer w/ Elevator for 50cc Extra 330LAL50013 Right Stabilizer w/ Elevator for 50cc Extra 330LAL50016 Landing Gear for 50cc Extra 330LAL50017 Wheel Pants for 50cc Extra 330LAL50020 Wing Tube for 50cc Extra 330LAL50021 Stabilizer Tube for 50cc Extra 330LAL50022 Decal Set for 50cc Extra 330L

Contents of Kit

2 19

Control Throws

Correctly balancing an aerobatic model is criticalto its performance and flight characteristics.Checking the balance on this model is best donewith two people.

Measure back 30%-33% of the whole wing root’slength from the leading edge and mark the CGrange with a felt-tipped pen at the wing tip. This isthe recommended center of gravity (CG) range.

Step 1

Recommended Center of Gravity (CG)

A 7-channel or greater computer radio is highly recommended. This allows the following features:

• Mixing the right aileron to the left aileron (flaperon mix)• Electronically adjustable aileron differential• Mixing the right elevator to the left elevator (dual elevator mixing)• Independent travel and trim adjustments of each elevator half• Mixing the right rudder servo to the left rudder servo (not required when using a single rudder servo)

When you use a 7-channel or greater computer radio, each servo is plugged into its own separatechannel. Consult your radio manual for specific details on hookup and programming.

Radio Setup

20 up20 down

°

°

40 up40 down

°

°

15 up15 down

°

°

26 left26 right

°

°

40 up40 down

°

°

43 left43 right

°

°

Standard 3D Standard 3D3D

The following is our recommended control throws for your reference.

Standard

Elevator RudderAileron

18 3

Radio Equipment

Recommended Engines

• 4-channel radio system (minimum)• 1 standard servo for throttle• 5 hi-torque servos

• D-55, Q-50

• Propeller (consult engine instructions)• Servo Extensions• Y-Harness

Adhesives• 6-minute epoxy• 30-minute epoxy• Thick CA glue• Threadlock

Additional Required Items

Tools• Adjustable wrench (small)• Drill (drill press preferred)• Hook and loop straps• Foam• Hex wrench• Hobby knife• Phillips screwdriver (small)• Pliers• Scissors• Square• Measuring device (e.g. ruler, tape measure)

The servos used for the control surfaces of this model must have a minimum of 9of servo torque. The servos with metal gear are strongly recommended.

kg-cm (125 oz-in)

Before beginning the assembly of the model, remove each part from its bag for inspection. Closelyinspect the fuselage, wing panels, rudder, and stabilizer for damage. If you find any damaged ormissing 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 cautionwhile working around areas where the colors overlap to prevent separating the colors.

Servo Selection

Before Starting Assembly

Step 9Install the switch for the ignition in the switch hatch on theside of the fuselage as shown.

Note: As the cowling mounting screw is inside the fuselage under the hatch, you need to openthe hatch before accessing the screw. To open the hatch, just remove the screws holding it onboth sides of the fuselage and lift the hatch from the fuselage.

Step 10Secure the battery for the ignition inside the fuselageusing a hook and loop strap. Make sure to add a fewpieces of foam between the fuselage and battery toprevent damage to the battery caused by vibration.Connect the battery to the ignition switch.

Step 12Route the vent line from the fuel tank out of the bottom of the cowling.

Step 14Slide and lock the cowling to the fuselage andthen secure the cowling using two screws.Mount the propeller and spinner to complete theprocedure.

Step 11Attach the fuel line from the fuel tank to the carburetor. Make sure the line is from the clunk and notthe vent line.

Step 13Make any necessary cutouts to clear the enginecomponents in the cowling. Remove a sectionfrom the bottom of the cowling near the exhaustpipe for cooling outlet as shown. This opening isnecessary to allow cooling air to pass throughthe cowling to prevent overheating of your engine.

4

Required Parts

Step 1

• Wing panel ( right )

Locate the opening for the aileron servo at the bottom of theaileron. Carefully remove the covering from the opening usinga hobby knife.

left and

Step 2Plug a servo extension onto the servo. Tie the servo leadstogether by using a secure connector, or using a ribbon toprevent them from coming loose during flight.

Step 3Tie a weight to a piece of string. A wheel collar works great inthis application. Tie the other end of the string to the servoextension.

Lower the weight into the wing from the aileron servo opening.Let the weight drop out through the wing root for the servo. Usethe string to pull the servo lead through the wing.

Secure the servo using the hardware provided with the servo.Attach the servo arm to the servo. Make sure the servo arm isparallel with the hinge line when the servo is at the neutralposition.

Repeat Steps 1 through 5 for the remaining wing panel.

Step 4

Step 5

Step 6

17

Section 1 – Aileron Servo Installation Step 2The vertical and horizontal base lines are pre-markedon the firewall. Measure and mark the same distancefrom the lines for the four engine standoff screws. Thefirewall is already mounted correctly to provide rightoffset for the engine when the engine standoff center ison the intersection of the above lines.

Step 4Install four screws from the back side of thefirewall. You may apply epoxy glue here.

Step 6Install throttle servo with servo arm to theprovided throttle servo mount. Drill a holein the firewall for the throttle linkage topass. Attach the linkage to the servo armand throttle.

Step 7Install the exhaust pipe to the engine.

Step 8Secure the ignition module to the engine box.Make the connections between the ignitionbox and engine at this time.

Step 5Install engine using four machined aluminumstandoffs, screws and lock washers.

Step 3Drill the holes in the firewall for mounting the engine.

5

Required Parts

Step 1

• Wing panel (left and right)• Aileron (left and right)

Tape the aileron to the wing. Using a square held inalignment with the outer hole in the servo arm and90 with the trailing edge of the wing, mark theaileron with a pen where the straight edge intersectsthe aileron hinge bevel.

°

Step 2Measure rearward 10mm from the top of theaileron bevel and make another mark using a pen.The intersection of the line from Step 1 and thisline will be the position for the control horn.

(3/8”)

Step 3

Step 4

Remove the ailerons from the wing. Use rubbing alcohol to remove any tape residue.

Carefully drill through the aileron at the markedposition. Be especially careful when penetratingthrough the top surface of the aileron, as it’s easyto split out the wood and rip the covering. Placinga wooden block under the aileron and drilling slowlywill prevent these problems.

Note: A hardwood block (hard point) is located below the sheeting; you will be drilling throughthis. Make sure to drill the hole perpendicular to the centerline of the aileron.

16

Step 2

Step 3

Step 4

Step 5

Wrap the receiver battery in foam and use rubberbands or hook and loop straps to secure the battery tothe battery tray.

Assemble the fuel tank correctly. Be sure to use thegas-compatible stopper and fuel tubing.

Place foam on the floor of the tank compartment.Secure the tank in place by wrapping rubber bands orhook and loop straps around the tank and tank floor.Later we will run the fuel lines.

Locate the hidden switch hatch on the side of thefuselage and open the hatch. Mount the receiver switchin the hatch and then close the hatch door.

Required Parts

D-55 Installation

Step 1

• Fuselage• Engine and accessories

This model accepts gas engines ranging from 50 through 60cc. The following steps show theinstallation of a 55cc gas engine for your reference. The detailed steps may be different when yourselected engine is different.

Collect the necessary items for the installation of your particular engine.

Section 11 – Mounting the Engine andCowling

Section 2 – Aileron Control HornInstallation

Step 5From the top of the aileron, plug the control hornscrew through the hole and secure it with theprovided nut.

Step 6Repeat Steps 1 through 5 for the remaining aileron.

Required Parts

Step 1

• Wing panel ( right )• Aileron (left and right)

Properly hinging the control surfaces on this model is very important! Poorly installed hingesaffect the model’s precision and control response and can also be dangerous. Each and every hingeneeds to be securely bonded in place in both the flying surface and the control surface. The hingepivot points need to be exactly parallel to each other and precisely located on the center of the hingeline. The control surfaces of this model are predrilled for the hinges included in hardware package.

Sand each end of the hinges using coarsesandpaper. This will improve the bond of the epoxy tothe hinge.

left and

Section 3 – Hinging and Sealing theControl Surfaces

Step 2Mix some 30-minute epoxy. Using a glue syringe ortoothpick, place a sufficient amount of the epoxy intoone of the hinge pockets in the aileron leading edge.Install one of the hinge points until the hinge pincenter is flush with the leading edge of the aileron.Wipe away any excess epoxy with rubbing alcohol.Continue installing hinges in the leading edge of theaileron. The control surfaces (ailerons) will beinstalled after the epoxy is fully cured. Note: Be surethat the hinge pivot pins are parallel and flush to theaileron leading edge. It’s important to frequently mix afresh batch of 30-minute epoxy in order to achievegood glue joint penetration. If you notice the epoxybecoming thicker, then mix a new batch!

15

Step 2

Note: It may be necessary to drill the hole in thewheel to fit onto the axle.

Install the following items onto the axle: washer, wheeland then wheel collar.

Step 3

Note: Always use threadlock on metal-to-metalfasteners to prevent them from vibrating loose.

The blind nuts on the wheel pant are pre-installed.Slide the wheel pant to the right position on the wheel.Secure the wheel pant to the landing gear with twoscrews.

Step 4

Step 5

Install the landing gear to the fuselage using fourscrews and four lock washers.

Repeat Steps 1 through 4 for the remaining landinggear.

Required Parts

Step 1

• Fuselage

Use foam and rubber bands (or hook and loop straps)to secure the receiver to the battery tray.

Section 10 – Receiver, Battery and FuelTank Installation

6

Step 3

Step 4

Hint: Remove the screws and wick thin CA intothe holes to strengthen the threads. Then,reinstall the screws.

Step 5

Remove the bracket and drill pilot holes at thepreviously marked positions.

Assemble the tail wheel bracket and use providedscrews to secure the bracket in place. A hardwoodplate is positioned in the rear of the fuselage,allowing these screws to be firmly tightened.

Using the provided springs, hook up the tiller armto the rudder with the tail wheel.

Section 9 – Landing Gear Installation

Required Parts

Step 1

• Fuselage• Main landing gear• Wheel (2)• Wheel pant (left and right)

Install the axles in the landing gear. Secure theaxles using an adjustable wrench and the nutsprovided with the axles.

7

Step 3

Step 4

Step 5

Step 6

Step 7

Note: It’s a good idea to seal the aileron and elevator hinge lines airtight with a piece ofcovering to prevent flutter after you finish hinges installation.

When the epoxy is cured, work each hinge throughout its full motion several times using yourhands. This will break free any epoxy that may have found its way into the hinge joint. Move thehinge throughout its full travel until no resistance is felt.

Mix some 30-minute epoxy. Place a sufficient amount of epoxy in each of the hinge pockets in onewing panel.

Carefully attach the aileron to the wing, making sure thehinges are inserted in their respective hinge pockets.Press the aileron and wing together until the hinge linegap between the aileron and wing is small enough. Use apaper towel and rubbing alcohol to wipe away any visibleepoxy around the hinges.

Double-check the hinge gap and allow the epoxy to fully cure for enough time. Now is a goodtime to repeat Steps 1 through 5 for the remaining wing panel and aileron.

When fully cured, move each control surface throughout its travel range several times to breakaway any epoxy in the hinge. Be sure to deflect the surface fully.

Required Parts• Control horn linkages (2)

Section 4 – Aileron Linkage Installation

Step 1Screw the molded swivel link with linkage onto the controlhorn screw until the distance from the aileron surface tothe top of the link is 28mm (1 1/8”).

14

13

Required Parts

Step 1

Step 2

• Fuselage• Rudder• Tail wheel assembly

Install the tiller arm to the bottom of the rudderwith screws.

Position the tail wheel in place as shown,centered on the rear of the fuselage. Using afelt-tipped pen, mark the positions for themounting screws through the tail wheel bracket.

Section 8 – Tail Wheel Installation

Step 7

Step 8

Hinge the rudder using the same techniques as with the aileron and elevator.

Put the rudder in its neutral position and center the rudder servo. Adjust the length of both ruddercables to match the distance from the rudder servo arm to the control horn. Use a plier to fix thelength of the cables. Install the cables on both sides of the outer holes of the rudder servo arm andcontrol horn.

8

Adjust the linkage length until the hole in the ball link aligns with the outer hole in the servo armwhen the aileron is neutral and the servo arm is centered.

Attach the ball link to the outer hole in the servo armwith a screw and nut as shown. Don’t forget to usethreadlock.

Repeat Steps 1 through 3 for the remaining servo inthe opposite wing panel.

Step 2

Step 3

Step 4

Required Parts

Step 1

Step 2

Note: It may be necessary to slightly enlarge the holes in the fuselage for the anti-rotation pinsusing a small round file.

• Wing panels• Fuselage• Wing tube

Check the opening for the wing tube, servo leads and pins from inside of the fuselage where thewing panels connect to the fuselage. Carefully remove the covering from the opening using a hobbyknife.

Locate the wing tube and carefully slide it into one wingpanel as deeply as possible. Slide the wing (with tube)into the wing tube opening in the fuselage. Pass theservo lead in the wing into the fuselage before the wingconnects to the fuselage. Make sure the wing panelanti-rotation pins slide into the holes provided in thefuselage.

Section 5 – Wing Installation

12

Step 2

Step 3

Install the rudder servo on the right position of servo trayin the fuselage. Attach the servo arm to the servo. Makesure the servo arm is perpendicular (90 ) to thecenterline of the fuselage when the servo is at the neutralposition.

Put the fuselage on its side with rudder virtuallyconnecting. Using the provided rudder cable, measure astraight line from the rudder servo arm to the opening inStep 1, and mark the extension line on the rudder with apen.

°

Step 4

Step 5

Step 6

Measure rearward 10mm from the edge of therudder bevel and make another mark using apen. The intersection of the line from Step 3 andthis line will be the position for the ruddercontrol horn.

Carefully drill through the rudder at the marked position,perpendicular (90 ) to the rudder centerline at themarked position. Be especially careful when penetratingthrough the backside of the rudder.

Put the threaded rod of the rudder control horn throughthe hole and secure it with the provided nuts. Adjust theposition of the rod so that it has the same length on bothsides of the rudder. Screw the molded swivel link withlinkage onto the threaded rod at the right position sothat the rudder cable in operation will not hit the openingof the fuselage.

(3/8”)

°

9

Step 3Carefully slide the remaining wing panel onto the wing tube that projects from the fuselage. The fitmay be tight; use caution when inserting the wing panels onto the wing tube and fuselage.

Step 4Make sure both wings fit well with the fuselage andthere is no gap between them. Secure the wingpanels using the provided wing screws.

Required Parts

Step 1

2

• Stabilizer (left and right)• Fuselage• Stabilizer tube

Locate the opening for the elevator servo arm at thebottom of the stabilizer. Carefully remove the coveringfrom the opening using a hobby knife.

Install the elevator servo using the hardware providedwith the servo as shown.

Plug a servoextension onto the servo.

Plug a servo extension ontothe servo.

Step

Section 6 – Stabilizer Installation

10

From the top of the elevator, plug the control horn screwthrough the hole and secure it with the provided nut.

Step 6

Step 7Cut off the first section of one of the hinges. This is doneto clear the tube installed in the stabilizer.

Step 8Glue the elevator hinges in place using the sametechniques used to hinge the ailerons. The shortenedhinges will be installed into the stabilizer towards theroot.

11

Step 9

Step 10

Step 11

Install the elevator linkage using the same techniquesused to the aileron linkage.

Repeat Steps 1 through 9 for the remaining stabilizer and elevator.

Install the stabilizer using the same techniques for the wing installation. Secure the stabilizerwith screws at the bottom as shown.

Required Parts

Step 1

• Rudder• Fuselage

Check the opening for the rudder cable in the fuselage.Carefully remove the covering from the opening using ahobby knife.

Section 7 – Rudder Installation

Step 3

Note: The technique for installing the control hornsin the elevators is similar to the aileron control horninstallation.

Center the elevator servo using the radio system. Installa servo arm onto the servo.

Step 4Mark a line 3mm (1/8”) away from the servo arm andparallel to the movement direction of the servo arm.Measure rearward 10mm (3/8”) from the top of theelevator bevel and make another mark using a pen. Theintersection of the two marks will be the position for thecontrol horn.

Step 5

Note: Make sure to drill the hole perpendicular to thecenterline of the elevator.

Carefully drill through the elevator at the markedposition. Be especially careful when penetratingthrough the top surface of the elevator, as it’s easy tosplit out the wood and rip the covering.Placing a wooden block under the elevator and drillingslowly will prevent these problems.