TWEETY Instruction Manual. Almost-Ready-to-Fly Nitro/Electric Aerobatic Airplane SPECIFICATIONS FEATURES

Transcription

1 TWEETY - 40 Almost-Ready-to-Fly Nitro/Electric Aerobatic Airplane Instruction Manual SPECIFICATIONS WINGSPAN: 60.1in (1526mm) LENGTH: 46.5in (1180mm) WING AREA: 654 sq in (42.2 sq dm) FLYING WEIGHT: 5.5 lb (2500g) SUGGESTED MOTOR SYSTEM: G32-800kv brushless outrunner motor, 80A ESC, 12*6 prop SUGGEST RADIO SYSTEM: At least 4CH radio, 4 standard servos (5 for nitro) FEATURES Light-weight laser-cut ply and balsa construction. Detachable fuselage hatch for easy access of battery and electronics. Conveniently powered by either electric motor or nitro engine. Pre-covered in highly visual trim scheme. 1

2 Dear Customer, Congratulations on your purchase of Tweety-40 ARF from Value Hobby. We thank you for your generous support, and hope you enjoy your new airplane. At Value Hobby, we hope to offer competitive prices, good performance, and products that you can setup and use with ease. That s why we extensively researched and tested this airplane, and suggested all the products necessary for you to setup properly. We understand that you have many choices when purchasing, and we are grateful you choose to buy from us. As vendors, one of the most gratifying things for us is to hear from our customers. We would welcome any suggestion to help us improve. Please make us aware of any errors and imperfections in the airplane or the instructions, or about the setup that we suggested. We hope you ll find our setup suggestions to be helpful, and enjoy flying your new airplane. Please feel free to contact us at (630) or us at support@valuehobby.com Disclaimer By purchasing and/or building this model, user assumes ALL liability and risk involved with this product. This model should be built and flown by an experienced pilot and only flown at AMA sanctioned sites. Value Hobby guarantees this model to be free of defects in materials and workmanship at the date of purchase. This warranty does not cover any parts damaged by use or modifications. In no way shall Value Hobby s liability exceed the original cost of the purchased model. Further, Value Hobby reserves the right to modify this warranty without notice. Value Hobby has no control over the final stages of assembly or the material used for the final assembly. No liability shall be assumed nor materials used for the final user-assembled product. By the act of using the final product the user accepts all resulting liability. Value Hobby, as a R/C product vendor, provides a top quality airplane and instructions to complete the model. The quality and flight characteristics of the finished model depend greatly on how it is built; we cannot guarantee the performance for the completed model and representations are expressed or implied as to the performance of the completed model. If the buyer is not prepared to accept the liability associated with the use of this product, the buyer is advised to return this kit immediately, in new and unused condition. Safety in Assembly During assembly of this aircraft, you will be asked to use sharp knives and hobby adhesives. Please follow all safety procedures recommended by the manufacturers of the products you use, and always follow these important guidelines: ALWAYS protect your eyes when working with adhesives, knives, or tools, especially power tools. Safety glasses are the best way to protect your eyes. ALWAYS protect your body, especially your hands and fingers when using adhesives, knives, or tools, especially power tools. Do not cut toward exposed skin with hobby knives. Do not place hobby knives on tables or benches where they can roll off or be knocked off. ALWAYS have a first-aid kit handy when working with adhesives, knives, or tools, especially power tools. ALWAYS keep hobby equipment and supplies out of the reach of children. 2

3 Safety in Flying This is NOT a toy! It is a very high-performance RC airplane capable of high speeds and extreme maneuvers. It should only be operated by a competent pilot in a safe area with proper supervision. ONLY fly your aircraft in a safe, open area, away from spectators and vehicles and where it is legal to fly. NEVER fly over an unsafe area, such as a road or street. Never fly too close to yourself or spectators. Never run your motor inside a house or building with the propeller attached Remove the prop for safety. Required Items CA Glue Thin and Thick Epoxy glue Hobby Knife Small Phillips Screwdriver Set Metric Allen Wrenches Scissors Small Pliers Wire Cutters Masking tape Optional Heat gun Before Starting Assembly Examination Unpack your airplane and examine the components. Check for damage of any kind. If you see any damage, please contact Value Hobby immediately. Covering Your airplane was packed in plastic at the factory without any wrinkles in the covering. You may notice some wrinkles now; more likely, you will notice a few in a day or two or the first time you take the plane out to the flying field. These wrinkles are the result of wood shrinkage and/or expansion. Balsa wood changes size and shape slightly as it is exposed to varying humidity in the air. This is a natural property of balsa wood. As your airplane adjusts to the weather in your part of the world, wrinkles may appear and disappear. Wrinkles may be removed with the gentle application of heat to the covering material on your airplane. The best tool to use is a hobby heat gun. Apply the heat gently: the covering material will shrink as you apply the heat, and this will remove the wrinkles. BE CAREFUL! Too much heat applied too quickly can damage the covering, either by causing it to pull away from the wood at seams and corners or even by melting it. The covering will shrink at low temperature with patient application of heat. Wrinkles in the covering DO NOT affect flight performance. Remove the canopy before attempting to use heat on your covering! The canopy is made of thermo-activated plastic and WILL deform with the application of heat. Do not apply heat to the canopy. If you need to clean your airplane, we recommend using a damp towel. The paint used on the canopy and cowl is not safe for all cleaners. In particular, DO NOT use alcohol on these parts, it will remove the paint. 3

4 RECOMMENDED RADIO EQUIPMENT Product SKU Quantity Radio Flysky T6 6CH Transmitter and Receiver FLY-RC Servo Towerpro SG5010 Standard Servo Y-Harness Extension Universal Servo Y-Harness Heavy Duty 12-Inch (Futaba"J" and JR Compatible) Universal Servo Extension Heavy Duty 24-Inch (Futaba"J" and JR Compatible) RECOMMENDED POWER SETUP TWP-SV-0368 Electric 4 Nitro 5 AMS-AC AMS-AC Product SKU Motor Gforce G32 (42-50) 800KV XYH-MT-0178 ESC Hobbywing Flyfun 80A Opto ESC HWG-SC-0244 UBEC Hobbywing 3A UBEC HWG-SC-0258 Battery GForce Elite Series 30C 4000mAh 4S 14.8V FLM-LP-2201 Prop 12 x 6E GFH-MP-2661 OPTIONAL ACCESSORIES: Product SKU Charger GT Power C6 6S LiPO Charger GTP-CH-1427 Thin CA Glue Quickie Thin CA VHB-AC-2097 Medium CA Glue Quickie Medium CA VHB-AC-2098 Stand Foam Field Stand VHB-AC-1997 Watt Meter GT Power 130A Watt Meter GTP-AC-0591 Connector T Connector Female T Connector Male AMS-AC-1914 AMS-AC-1913 LiPO Bag Lipo charging bag VHB-LP

5 Parts of the airplane 1. Fuselage 2. Wings 3. Horizontal stab and elevator 4. Fin and rudder 5. Canopy 6. Hatch 5

6 ACCESSORIES Bag1. 1. Throttle Pushrod {Φ1.5 x 450mm (17.7 in)} 2. Aileron Pushrod {Φ1.8 x 110mm (4.3 in)} 3. Elevator Pushrod {Φ1.8 x 650mm (25.6 in)} 4. Rudder Pushrod {Φ1.8 x 650mm (25.6 in)} 5. Elevator Joiner Wire Bag2. 1. Φ2.1 Pushrod Connectors x 5 2. Control Horn Set x 4 3. Mounting Screws M2*20mm (0.8 in) for Aileron Control Horn 4. Mounting Screws M2*10mm (0.4 in) for Rubber & Elevator Control Horn 5. Clevis x 4 {Φ2 x 29mm (1.1 in)} Bag3. 1. Hinge x Tail wheel Set x 1 Bag4. 1. Mounting Screws M4*35mm (1.4 in) for Wing x 2 2. M4 Washer x 2 3. Wing Bolt Plate x 1 4. Wing Joiner x 1 Bag5. 1. Mount for Engine x 1 2. Mounting Screws M4*20mm (0.8 in) for Engine Mount x 4 3. M4 Washer x 4 Bag cc Flue Tank x 1 Bag7. 1. Canopy 2. Self-tapping Screws M3*10mm (0.4in) with Washer x 4 Bag8. 1. Landing Gear x 1 2. Mounting Screws M4*12mm (0.5 in) for Landing Gear x 2 3. Wheel x 2 (Φ57) 4. Wheel Axel x 2 {M6*35mm (1.4 in)} 5. M6 Nut x2 6. Φ4.1 Wheel Collar x 2 Bag9. 1. Electric Motor Mount x 1 2. M4*16mm (0.6 in) Mounting Screw x 7 3. M4 Washer x 7 4. M4 Lock Nut x 4 6

7 Install the Ailerons Step 1: Drill a 1/16-inch hole into the center of each hinge slot in the aileron and wing panel. Trim the covering away from each hinge slot to ensure that the hinges will be properly glued in place. Step 4: Adjust the aileron so there is a small gap between the LE of the aileron and the wing. The gap should be about 1/64-inch or just wide enough to slip a piece of paper through. Step 2: Test fit a CA hinge into each of the hinge slots. If necessary, enlarge the slots with a hobby knife. When satisfied with the fit, place the hinges into the slots. Push a pin through the middle of each hinge to keep them centered. Step 5: Apply six drops of thin CA to the top and bottom of each hinge. Do not use accelerator in the hinging process. The CA must be allowed to soak into the hinge naturally. After the CA has cured, flex the surfaces several times to break in the hinges. Pull on both surfaces to make sure the hinges are secure. Repeat steps 1-5 for the other wing panel. Step 3: Join the aileron to the wing panel and remove the pins from the hinges. Center the aileron on the wing. 7

8 Install the Aileron Servos & Pushrods Before installation, confirm that the servos you will be using will properly fit in the servo opening. Make adjustments as necessary for your servos. The pre-cut servo openings on this airplane will fit most standard size servos. ENLARGE TO 2mm CUT OFF UNUSED ARM Step 1: Installing the servos in the wing will require the use of a servo extension wire for each aileron servo. One Y-harness connector is also required and is used to allow the aileron servos to plug into one slot in your receiver. You may also have a computer radio that allows you to plug the servos into separate slots and then mix them together with the radio transmitter. If you choose to mix them together with the radio rather than a Y-harness, refer to the manual for your particular model radio system. Step 3: Securely tie the string from inside the opening for the aileron servo to the end of the servo extension. Pull the servo wire and extension through the wing. Step 4: Temporarily position the aileron servo into the servo bay. Install and remove a servo mounting screw into each of the four holes. Apply a drop of thin CA into the holes to harden the wood. After the glue has hardened, install the servo into the opening. Cut three arms from a four-armed servo arm (arms may need to be purchased separately). Center the servo with your radio system and install a servo arm parallel to the aileron hinge line as shown. Step 2: Attach the servo extension to the aileron servo and secure it with heat shrink tubing. The tubing can be shrunk around the connector with a heat gun or micro torch. If your aileron servo has tabs molded into the case for mounting the servo on its side, they must be cut off in order for the servo to fit into the servo bay in the wing panel. Follow the instructions included with the servo for cutting the tabs. Install the eyelets and grommets included with the servo. 8

9 Step 5: Locate a Ф1.8 x 110mm (4.3 in) pushrod wire threaded on one end. Screw a nylon clevis onto the rod. Connect the clevis to the second hole on the control horn Finish the wing panels Step 6: With the pushrod wire is 90-degrees to the hinge line and holes in the control horn aligned with the hinge line, use a drill bit to drill the mounting holes for control horn. Install the control horn to the aileron using two M2*20mm (0.8 in) screws and one backplate. Step 1: Without using any glue, test fit the wing halves with the wing joiner. Make sure the halves fit together well. If there is a problem, look for obstructions such as glue bumps or wood slivers inside the wings. Make any adjustments necessary to get a good fit. Step 2: Mix a generous amount of 30-minute epoxy. Pour the epoxy into the joiner opening on the wing. Make sure the epoxy is distributed all the way around inside the wings. Use an epoxy brush to coat the root ribs of both wings and one half of the joiner all the way around. Insert the epoxy-coated half of the joiner. Wipe away excess epoxy as it is forced out. Step 7: With the control surface centered, tighten the screw to secure the pushrod to the servo arm. 9

10 Step 3: Coat the protruding end of the joiner all the way around with epoxy. Join the other wing, and press the two halves together, allowing excess epoxy to drip out as you go. When the wings come together, wipe away excess epoxy that is squeezed out, and then use a C-clamp and several strips of masking tape on both the top and bottom of the wing to tightly hold the two halves together. If epoxy continues to work out of the wing under the tape, remove one strip at a time and wipe off the epoxy, then replace with another strip of tape. Do not disturb the wing until the epoxy has hardened. Step 6: Trim the covering just inside your lines. Wipe away the lines with alcohol and glue the wing bolt plate to the wing. Continue the wing bolt holes through the wing bolt plate with a 1/8" [3.2mm] drill bit. A wood backer piece while drilling will help ensure clean-edged holes in the wing bolt plate. Step 4: Locate and remove the covering from the wing bolt holes near the trailing edge of the wing. Step 6: When you are finished installing electronics inside the fuselage, you can install the wing onto the fuselage using two machine screws and two flat washers. Step 5: Align the wing bolt plate over the holes on the underside of the wing. With the wing bolt plate centered over the holes, use a sharpie pen to trace around the plate onto the wing. 10

11 Install the Stabilizer Step 1: Locate the horizontal stabilizer slot under the covering on the tail section of the fuselage by lightly pressing with your finger. The slot is located on both sides of the fuselage. Carefully remove the covering. Make sure you do not cut into the wood. Step 4: Attach a piece of string to measure the distance A of each stabilizer halves, and B the difference between the wing tip and the top of stabilizer. Both distances should be equal. Step 2: Locate the slot for the vertical fin on the top of the fuselage and remove the covering. Make sure you do not cut into the wood. Step 5: With the stabilizer properly aligned, use a felt-tip pen to trace a line around the tail of the airplane on the top and bottom of the horizontal stabilizer. Step 3: Insert the stabilizer into the stabilizer slot so it is centered in the fuselage (dimension A should be equal). Place the wing onto the fuselage and secure it in place with the wing hold-down bolts. View the plane from the rear and at a distance of a few feet. The stabilizer should be parallel to the wing (dimension B should be equal). If not, sand the stabilizer mounting base slightly to achieve the proper position of the stabilizer. 11

12 Install the Vertical Fin Step 6: Remove the stabilizer and draw two additional lines, top and bottom, 1.6mm inside the lines drawn in the previous step. Using a knife, carefully cut through the covering along the inside lines and remove the covering from the center. Do not cut the wood under the covering! If the covering is not removed from the stabilizer, a proper bond for your adhesive will not be achieved. Step 7: Mix 30-minute epoxy and spread some inside the horizontal stabilizer mount on the fuselage. Spread more epoxy onto the top and bottom of the stabilizer where the covering was removed. Insert the stabilizer into the fuselage from the rear and adjust the alignment using the guide lines that were drawn onto the stabilizer. Wipe off any epoxy that squeezes out using a paper towel dampened with rubbing alcohol. Recheck the alignment frequently while the epoxy cures. Step 1: Test fit the vertical fin in the slot in the top of the fuselage. Sand the edges of the slot if necessary to obtain a snug fit. Draw a line around the vertical fin where it meets the fuselage. Cut the covering 1/16 [1.6mm] inside the lines you drew on the vertical fin and the top of the fuselage. Remove the covering. Step 2: Mix some 30-minute epoxy and apply it to the top of the horizontal stabilizer through the slot and on the sides of the slot. Apply more epoxy to the vertical fin where the covering was removed. Insert the vertical fin into the fuselage and adjust the alignment. Check for a 90 degree angle between the vertical fin and horizontal stabilizer when viewed from the rear. Use masking tape to hold the vertical fin in this position. Recheck the alignment frequently while the epoxy cures. 12

13 Install the Elevator Step 1: Find the pre-cut hinges from the included accessories. Test fit the hinges in the slots in the elevator halves and stabilizer. If the hinges do not slide into the slots easily, work your knife blade back and forth in the slot a few times to provide more clearance DRILL A 3/32 HOLE DEEP IN CENTER OF HINGE SLOT Step 2: Drill a 3/32 [2.4mm] hole, 1/2 [12.7mm] deep in the center of the hinge slots. Use a rotary tool with a 3/32 [2.4mm] drill bit or a carbide cutter for the best results. Reinsert your knife blade to clean out the slot after you drill the holes. Step 4: Temporarily insert a pushrod into the elevator pushrod exit slot. Use the position of the pushrod to align the elevator control horns onto the undersides of the elevator halves. Mark the locations of the control horn mounting holes onto the elevator halves and drill holes at the marks. Do not drill all the way through the elevator halves! Thread a screw into the hole and back it out. Apply a couple drops of thin CA glue to the hole and let it harden. Attach the elevator control horns to the elevators using four screws. Step 3: Insert four hinges into the slots in the stabilizer. Press the elevators onto the hinges until the gap between the elevators and stabilizer is about 1/32 [.8mm]. Flex the elevators a little in one direction, but do not allow them to pull away from the stabilizer. Apply six drops of thin CA onto each hinge. Turn the fuselage over and apply six more drops of thin CA to the other side of each hinge. DO NOT use accelerator while hinging, as the CA must wick into the hinge to properly attach the hinges. Use a paper towel to absorb any excess CA. After the CA cures, flex the elevators in both directions to free up the elevators for operation. 13

14 Install the Rudder and Tail Wheel Step 1: Assemble the tail wheel assembly set using the included accessories. Step 3: As you did with the elevator, use the pushrod to temporarily position a control horn onto the side of the rudder. Then secure the control horn using two screws. Step 2: The installation tab of the tail wheel need to be mounted on the bottom of the fuselage. Test fit the rudder to the fuselage with the tail wheel assembly installed in the orientation shown. Make any adjustments necessary so the tab on the tail wheel is securely fastened on the fuse. Roughen the wire on the tail wheel assembly that fits into the rudder with sand paper and clean it off with alcohol. Glue the tail wheel wire into the hole in the LE of the rudder with medium or thick CA glue. Fit the rudder to the fuselage along with CA hinges. Glue the CA hinges in place with thin CA glue. 14

15 Install the Tail Servos and Pushrods Step 1: Install the elevator and rudder servos into the fuselage as shown using the hardware supplied with the servos. Be sure to harden the screw holes with thin CA as was done with the aileron servos. Cut three arms from two four armed servo arms. Center the servos with your radio system and install them onto the servos with the servo screws. Enlarge the outer holes of each servo arm with a 5/64" [2mm] drill bit. Depending on your balancing needs, you can install the receiver battery in the front of the fuselage or at the back of the fuselage. Step 3: Center the rudder, and tighten the set screw to connect the pushrod to the servo arm. Step 4: Thread the clevis securely onto the elevator pushrod. We recommend using a clevis retainer to help keep the clevis in place. Slide the pushrod through the elevator pushrod exit slot in the fuselage and connect it to the elevator control horn. Step 2: Thread the clevis securely onto the rudder pushrod. We recommend using a clevis retainer to help keep the clevis in place. Slide the pushrod through the rudder pushrod exit slot in the fuselage and connect it to the rudder control horn. Step5: Center the elevator, and tighten the set screw to connect the pushrod to the servo arm. 15

16 Install the Main Landing Gear Step 1: Locate the four blind nuts in the bottom of the fuse. Cut the covering from the inside of the holes. Step 4: Mount the main wheels to the axles with the wheel collars Step 2: Mount the aluminum landing gear to the fuse. Step 3: Mount the two wheel axles. 16

17 Install Electric Motor Step1. The tweety-40 does some upgrades on the electric motor mount. You don t need to assemble a mount like in the tweety-25. Step4. Install the electric motor to the motor mount using 4 M4*16mm (0.6 in) socket head screws, 4 M4 lock nuts and 4 M4 washers. Step5. Install the prop and spinner. Step2. Install the motor mount to the firewall using 3 M4*16mm (0.6 in) socket head screws. Step3. Prepare an assembled motor as shown. 17

18 Installing the Fuel Tank (only if you use nitro motor) 12mm but not touch. The clunks must be able to move freely inside the tank when assembled. Adjust the length of the fuel tubing accordingly. When satisfied, tighten the PM3x25mm screw in the stopper to secure it in place (do not over-tighten). Mark the side of the tank that must face up when installed in the plane. We also suggest marking the tubes in the stopper. Step 1: The fuel tank can be assembled as a two line system consisting of a vent (pressure) line to the muffler and a carb line. Filling and emptying of the tank would need to be done through the carb line, or an optional fuel fill valve. The tank can also be assembled as a three line system having a vent line, carb line, and fill line. If installing a fill line, puncture the top of the stopper above the sealed off fuel tube hole. The fill and carb lines should extend out 13mm beyond the stopper and the vent line should be bent upwards and left uncut. With the tubes installed in the stopper, the stopper plates loosely in place with the PM3x25mm screw to hold the assembly together. Step 3: Insert the tank into the fuselage with the correct side facing up. The fuel tubing should be routed through the hole in the center of the firewall. To p o f t an k Ven t F ill an d carb lin es Step 2: Fit the stopper assembly into the tank with the vent line pointing toward the top of the tank, but not touching. The fuel tubing and clunks (fuel pickup) on the carb and fill lines should almost reach the back of the tank 18

19 Balancing the Model After you have finished building the model into ready-tofly condition you can set the C.G. of the model. You need to have all of the systems installed before you begin, including the nitro engine or electric motor, landing gear, radio system, and battery pack. Setting Control Throws Turn on the transmitter and receiver. Use a ruler to adjust the throw of the elevator, ailerons and rudder. Adjust the position of the pushrod at the control horn to achieve the following measurements when moving the sticks to their endpoints: Aileron Low Rate Up 9mm Down 9mm The C.G. is located 85mm (3.3in) back from the leading edge of the wing at the fuselage. This is where your model should balance for the first flights. Later you may wish to experiment by shifting the C.G. forward or back to change the flying characteristics. Moving the C.G. forward may improve the smoothness and stability, but the model may then require more speed for takeoff and make it more difficult to slow for landing. Moving the C.G. aft makes the model more maneuverable, but could also cause it to become too difficult to control. When balancing your model, support the plane upright at the C.G. position on the bottom of the wing with your fingers or a commercially available balancing stand. Move the battery or receiver inside the fuselage as necessary so the model hangs level or slightly nose down. This is the correct balance point for your model. After the first flights, the CG position can be adjusted for your personal preference. ` Aileron High Rate Up 16mm Down 16mm Elevator Low Rate Up 10mm Down 10mm Elevator High Rate Up 16mm Down 16mm Rudder Low Rate Up 12mm Down 12mm Rudder High Rate Up 20mm Down 20mm These are general guidelines for control throws. You can experiment with higher rates to match your preferred style of flying. 19

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