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Modeltech Magic Extra 300L, Instructions For Final Assembly, Page: 1 / 40

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Need help or have any questions?  Call us at 1-714-963-0329 or send us an Email at service@globalhobby.net

The Modeltech Magic Extra 300L ARF is distributed

exclusively by Global Hobby Distributors  18480

Bandilier Circle, Fountain Valley, CA  92708

All contents copyright © 2002, Global Hobby

Distributors  Version V2.0  June 2002

Kit Product Number 123739

Specifications:

●

Wing Span:  

49.5 Inches

●

Wing Area:  

700 Square Inches

●

Wing Loading:  

15-17 Ounces Per Square Foot

●

Length:

  49.5 Inches

●

Weight RTF:  

4.5 - 5.1 Pounds / 72 - 82 Ounces

●

Functions:

  Ailerons, Elevator, Rudder and Throttle

●

Power:

  .46 2-Stroke (recommended) or .61 4-Stroke

●

Radio:

  4 Channel w/4 Standard Servos

INSTRUCTIONS FOR FINAL ASSEMBLY

Summary of Contents for Magic Extra 300L

Page 1: ... CA 92708 All contents copyright 2002 Global Hobby Distributors Version V2 0 June 2002 Kit Product Number 123739 Specifications Wing Span 49 5 Inches Wing Area 700 Square Inches Wing Loading 15 17 Ounces Per Square Foot Length 49 5 Inches Weight RTF 4 5 5 1 Pounds 72 82 Ounces Functions Ailerons Elevator Rudder and Throttle Power 46 2 Stroke recommended or 61 4 Stroke Radio 4 Channel w 4 Standard ...

Page 2: ...le help with assembly and during your first flights Your local hobby shop has information about flying clubs in your area whose membership includes qualified instructors If there is no hobby shop in your area we recommend that you contact the AMA at the address below They will be able to help you locate a flying field near you Academy of Model Aeronautics 5151 East Memorial Drive Muncie IN 47302 9...

Page 3: ...ontact us at the address below Global Services 18480 Bandilier Circle Fountain Valley CA 92708 Phone 714 963 0329 Fax 714 964 6236 E mail service globalhobby net INTRODUCTION Thank you for purchasing the new Modeltech Magic Extra 300L ARF Before completing the final assembly of your new airplane please carefully read through this instruction manual in its entirety Doing so will ensure your success...

Page 4: ...e ailerons use separate aileron servos you will need to use a servo Y harness to join them The Magic Extra is not a big heavy airplane so it s not necessary to use high torque servos Five standard size servos will work fine For 3D aerobatics a four or more channel computer radio with mixing capabilities will be required Since there are two separate aileron servos used they can be plugged separatel...

Page 5: ...We have organized the parts as they come out of the box for easier identification during assembly Before you begin assembly group the parts as we list them below This will ensure that you have all of the parts before you begin assembly and it will also help you become familiar with each part If you find any parts missing or damaged please contact us below AIRFRAME ASSEMBLIES 1 Fuselage w Hatch Cov...

Page 6: ...ARTS 1 Hardwood Wing Joiner 1 Plywood Wing Screw Doubler 2 4mm x 35mm Machine Screws 2 4mm Flat Washers 2 4mm Blind Nuts MISCELLANEOUS FUSELAGE PARTS 1 Clear Molded Canopy 1 Spinner Assembly w Wood Screws 2 2mm x 10mm Wood Screws 1 2mm x 12mm Wood Screw 1 Length of Clear Tubing 1 Decal Sheet FUEL TANK ASSEMBLY 1 240cc Fuel Tank 1 Large Diameter Metal Plate 1 Small Diameter Metal Plate 1 Rubber Sto...

Page 7: ...he medium high temperature setting Allow the iron to heat up for approximately 5 7 minutes After the iron has reached temperature lightly apply the iron to the wrinkled section of the covering Move the iron slowly over the wrinkled section until the covering tightens and the wrinkles disappear You will notice that the color of the covering will darken when it is heated When the covering cools back...

Page 8: ...ach of the two wing panels and set them aside for now Using a modeling knife cut away and remove the excess covering material that overlaps onto the root ribs of each wing panel leaving about 1 16 overlapped so it does not pull away IMPORTANT It s very important to the integrity of the wing center section joint that you remove as much covering material from the root ribs as possible Use a ruler an...

Page 9: ...ng After the epoxy has set up test fit both wing panels together again to double check that they still fit together properly Check the leading and trailing edges too It s important that they be even with each other Mix a generous amount of 30 minute epoxy and apply a thin layer to the exposed half of the wing joiner the inside of the wing joiner box in the second wing panel and the entire surface ...

Page 10: ...sh the trailing edge down firmly into place Carefully align the centerline of the wing the center joint with the centerline of the fuselage at the back of the wing saddle Use a couple of pieces of masking tape to temporarily hold the wing aligned With the wing held in place and aligned use a ruler to measure from each wing tip to the back edge of each side of the fuselage Move the trailing edge of...

Page 11: ...and a pencil draw a vertical centerline on one side of the plywood wing screw doubler Using thick C A glue the wing screw doubler to the bottom of the wing making sure that the centerline you drew lines up with the centerline of the wing and that the back of the doubler is about 1 8 in front of the trailing edge of the wing The wing screw doubler must be centered on the wing so that the belly pan ...

Page 12: ...both the front and back of the belly pan with the sides and bottom of the fuselage and use several pieces of masking tape to hold the belly pan firmly in place With the belly pan held firmly in place use a pencil to outline the sides of the belly pan onto the wing Remove the belly pan Using a modeling knife carefully cut away and remove a strip of covering from just inside each outline you drew Al...

Page 13: ...g material from over the stabilizer mounting slots in the back of the fuselage Remove the two elevator halves and the hinges from the horizontal stabilizer and set them aside for now Using a ruler and a pencil measure and draw a centerline mark on the trailing edge of the stabilizer Using a builder s triangle extend this centerline mark vertically across the top of the stabilizer Slide the stabili...

Page 14: ...procedure until you are satisfied with the alignment Step 2 Installing the Horizontal Stabilizer With the stabilizer properly aligned use a pencil to draw a line on each side of the stabilizer where it meets the fuselage sides Do this on both the top and bottom Remove the stabilizer Using a modeling knife carefully cut away and remove the covering material from between the lines you drew Do this o...

Page 15: ...ing material from the base of the stabilizer too WARNING When cutting through the covering to remove it cut with only enough pressure to cut through only the covering itself Cutting down into the balsa structure could weaken the stabilizer and cause it to fail during flight Apply a generous amount of 30 minute epoxy to the gluing surfaces of both the stabilizer and the stabilizer mounting slot in ...

Page 16: ... 6 drops of thin C A on each side of the hinge Do not use thick C A or epoxy Use only thin C A for proper adhesion If any C A gets onto the aileron it can be removed promptly using a paper towel soaked with a small quantity of C A Debonder For flutter free control surfaces it is imperative that the hinges be glued in properly This includes both having a tight hinge gap and using plenty of thin C A...

Page 17: ...cure pull on each elevator half to check the integrity of the hinges Step 3 Installing the Tail Wheel Bracket Set the tail wheel bracket into place and align it The tail wheel wire should be up against the back edge of the fuselage and the bracket should be centered between the fuselage sides When satisfied with the alignment drill three 5 64 diameter pilot holes through the fuselage and secure th...

Page 18: ...odeling Knife Electric Drill YOU LL NEED THE FOLLOWING PARTS FROM THE KIT 1 Prebent Aluminum Main Gear Strut 2 Blow Molded Wheel Pants 2 Main Gear Wheels 2 4mm x 16mm Machine Screws 2 4mm x 35mm Smooth Shank Machine Screws SECTION 12 MAIN LANDING GEAR INSTALLATION 8 4mm Flat Washers 2 4mm Nylon Spacers 6 4mm Lock Nuts 2 2mm x 10mm Wood Screws YOU LL NEED THE FOLLOWING TOOLS AND SUPPLIES 5 32 Drill...

Page 19: ...ill allows the wheel to spin freely When satisfied with the fit apply a couple of drops of thin C A to the lock nut to secure it into place permanently Be careful not to get C A on the axle portion of the screw Slide one main gear wheel flat side first onto one 4mm x 35mm smooth shank machine screw Slide one 4mm flat washer up against the lock nut and slide the axle assembly into the slot in the w...

Page 20: ...e wheel pant using the tip of your modeling knife Kwik Bond Thick C A Pacer Z 42 Threadlocker 1 Phillips Head Screwdriver Adjustable Wrench Electric Drill YOU LL NEED THE FOLLOWING PARTS FROM THE KIT 2 Engine Mounting Beams 4 3mm x 16mm Machine Screws 4 3mm Blind Nuts SECTION 13 ENGINE INSTALLATION 4 3mm x 25mm Machine Screws 8 3mm Flat Washers 4 3mm Lock Nuts YOU LL NEED THE FOLLOWING TOOLS AND S...

Page 21: ...e of drops of thick C A The location of the engine is not important at this time Divide the measurement found in the procedure above in half Measure this resulting distance from the vertical centerline and draw one intersecting line across the upper and lower horizontal lines As an example if using the Magnum XLS 46 you would draw the intersecting lines 27 32 to the right and 27 32 to the left of ...

Page 22: ... x 25mm machine screws eight 3mm flat washers and four 3mm lock nuts 1 Phillips Head Screwdriver Excel Modeling Knife YOU LL NEED THE FOLLOWING PARTS FROM THE KIT 1 240cc Fuel Tank 1 Large Diameter Metal Plate 1 Small Diameter Metal Plate 1 Rubber Stopper SECTION 14 FUEL TANK ASSEMBLY INSTALLATION 1 Fuel Pick Up Clunk 1 3mm x 25mm Machine Screw 1 Silicon Fuel Tubing 2 Aluminum Tubing YOU LL NEED T...

Page 23: ...ntly rotate the stopper assembly until the aluminum vent tube rests just below the top of the fuel tank If you have trouble seeing the vent tube hold the fuel tank assembly up to a bright light This will illuminate the inside of the tank When satisfied with the alignment tighten the machine screw until the rubber stopper expands and seals the fuel tank opening Do not overtighten the screw This cou...

Page 24: ...servo output shafts They should all be toward the back of the fuselage To make it easier to run the servo leads into the wing saddle install the two rear most servos first Install the rubber grommets and brass collets onto your elevator rudder throttle and two aileron servos making sure to install the collets with the flanges toward the bottom of the servo Cut away and remove the covering material...

Page 25: ...n the pushrod wire into the outermost hole in the throttle arm You may need to enlarge the hole in your engine s throttle arm using a 5 64 diameter drill bit Step 2 Installing the Adjustable Servo Connector Enlarge the third hole out from the center of the servo arm using a 5 64 drill bit Install the adjustable servo connector into the servo arm IMPORTANT When threading on the connector nut don t ...

Page 26: ...o horn securely to the servo Kwik Bond Thin C A 1 Phillips Head Screwdriver Needle Nose Pliers Excel Modeling Knife Electric Drill YOU LL NEED THE FOLLOWING PARTS FROM THE KIT 1 14 1 2 Threaded Wire w 90º Bend 1 13 1 2 Threaded Wire 2 Nylon Control Horns w Backplates 4 2mm x 12mm Machine Screws SECTION 17 ELEVATOR CONTROL SYSTEM INSTALLATION 2 Nylon Clevises 1 Nylon 90º Snap Keeper 2 Wheel Collars...

Page 27: ...ure the servo horn to the servo Using a modeling knife cut away and remove the covering material from over the elevator pushrod exit holes in each side of the fuselage They are located 5 1 4 in front of the rudder hinge line and 1 7 8 above the bottom of the fuselage Connect your radio system and plug the elevator servo rear most servo into the receiver Double check that the elevator trim lever on...

Page 28: ...t the screws from loosening during flight Do not omit this procedure or failure of the elevator control system could result Kwik Bond Thin C A 1 Phillips Head Screwdriver Adjustable Wrench Needle Nose Pliers Excel Modeling Knife Electric Drill YOU LL NEED THE FOLLOWING PARTS FROM THE KIT 2 16 5 8 Threaded Wires w 90º Bend 2 Nylon Control Horns 4 2mm x 15mm Machine Screws SECTION 18 RUDDER CONTROL ...

Page 29: ...shrod wire The centerline of the control horn should be approximately 1 1 4 up from the bottom of the rudder Adjust the control horn so that the base is parallel with the hinge line and the clevis attachment holes are over the hinge line Mark the positions of the four control horn mounting screws then remove the control horn and set it aside Drill the holes through the rudder for the mounting scre...

Page 30: ... drill bit Install the 90º bend in one 3 long aileron pushrod wire into the hole that you just enlarged using the snap keeper provided When installing the snap keeper make sure it snaps firmly into place over the pushrod wire The pushrod wire should be on top of the servo arm as shown Center the aileron servo and install the servo arm assembly making sure the servo arm is centered and the pushrod ...

Page 31: ... 5 64 Drill Bit Ernst Airplane Stand Ruler Pencil Step 1 Installing the Clear Canopy Using a pair of scissors carefully cut out the canopy along the molded scribe line Using 220 grit sandpaper with a sanding block carefully sand the edges of the canopy smooth and straight Be careful not to scratch the surface of the canopy when sanding its edges Set the canopy onto the fuselage and align it The ca...

Page 32: ...ign it with the fuselage Drill one 5 64 diameter hole into the hatch cover and through the preinstalled mounting block in the fuselage 1 8 in front of the back edge of the hatch cover Make sure to drill the hole straight and not at an angle If you drill the hole farther than 1 8 in front of the back edge of the hatch cover you will miss the preinstalled block inside the fuselage Install the hatch ...

Page 33: ...ced correctly Improper balance will cause your airplane to lose control and crash Center of Gravity Location 3 to 3 3 4 back from the leading edge of the wing at the fuselage sides WARNING This is the recommended C G range For test flying we suggest you start with the C G in the middle of the range then move it farther back as you become familiar with the flying characteristics of the airplane It ...

Page 34: ...e control throws are suggested for initial test flying because they will allow the airplane to fly smoother and make it easier to control TEST FLYING Ailerons 5 8 Up 5 8 Down Elevator 3 4 Up 3 4 Down Rudder 1 5 8 Right 1 5 8 Left When measuring the control throws measure from the widest point of the control surfaces VERY IMPORTANT After you are finished adjusting the pushrods and control throws we...

Page 35: ...ly balance the propeller A propeller that is out of balance will cause excessive vibration which could lead to engine and or airframe failure and it will reduce engine efficiency and power The following are our general guidelines for your safety and the safety of others Please read and understand these safety guidelines before going out to the flying field for the first time Do not test fly your m...

Page 36: ... wide landing gear stance and long tail moment you will find the ground handling of the Magic Extra 300L very smooth and predictable IN THE AIR In the air the Magic Extra 300L is as smooth and docile or as wild and aerobatic as you want it to be With the control throws set to the Test Flying settings the airplane is smooth throughout the entire flight envelope even while moving the control sticks ...

Page 37: ... Center of gravity is correct If B Add nose weight If C Remove nose weight or add tail weight Yaw Into the wind perform inside loops using only elevator Repeat test performing outside loops from an inverted entry A Wing is level throughout B Airplane yaws to right in both inside and outside loops C Airplane yaws to left in both inside and outside loops D Airplane yaws to the right in inside loops ...

Page 38: ...38 Visit our website at http modeltech globalhobby com or for Customer Service at http globalservices globalhobby com ...

Page 39: ...omer Service Department to resolve the problem Yes No 7 Was any of the assembly difficult for you If yes please explain Yes No ____________________________________ ____________________________________ ____________________________________ ____________________________________ 8 What did you like most about this kit Assembly Manual Parts Fit Hardware Supplied Price Other _____________________________...

Page 40: ...y com Fold along dotted line Fold along dotted line Global Hobby Distributors Attn Global Services 18480 Bandilier Circle Fountain Valley CA 92728 8610 Post Office will not deliver without proper postage _____________________________ _____________________________ _____________________________ Return Address Here ...

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