5. FuntanaX 50 ARF Assembly manual Specifications Wingspan: . .................................... 56 in (1422mm) Length: . ......................................... 56 in (1441mm) Wing Area: .......................... 714 sq in (46.1 sq dm) Weight: ............................ 4–5.5 lb (1.8 kg–2.5 kg) Radio: ................................... 4-channel w/5 servos Engines: . .......... 32–.46 2-stroke, .40–.
Contents Covering Colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Contents of Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Radio and Engine Requirements . . . . . .
Introduction The FuntanaX 50 can do it all—harriers, torque rolls, blenders, and almost anything else you can dream up. It’s all possible, thanks to an extremely lightweight, all-wood airframe and big control surfaces that give the FuntanaX 50 a very impressive thrust-to-weight ratio and crisp control authority at any airspeed. The genuine UltraCote® trim scheme and factory painted parts, such as the cowl and wheel pants, complement the performance perfectly.
Limited Warranty Period Horizon Hobby, Inc. guarantees this product to be free from defects in both material and workmanship at the date of purchase. Limited Warranty & Limits of Liability Pursuant to this Limited Warranty, Horizon Hobby, Inc. will, at its option, (i) repair or (ii) replace, any product determined by Horizon Hobby, Inc. to be defective. In the event of a defect, these are your exclusive remedies.
Inspection or Repairs If your product needs to be inspected or repaired, please call for a Return Merchandise Authorization (RMA). Pack the product securely using a shipping carton. Please note that original boxes may be included, but are not designed to withstand the rigors of shipping without additional protection. Ship via a carrier that provides tracking and insurance for lost or damaged parcels, as Horizon Hobby, Inc. is not responsible for merchandise until it arrives and is accepted at our facility.
Required Tools and Adhesives Tools • Canopy Scissors • Drill • Flat blade screwdriver • Hobby knife • Phillips screwdriver (large) • Pliers • Sandpaper • Drill bit: 1/16" (1.
Covering Colors • Pearl Blue • Cub Yellow • Silver HANU845 HANU884 HANU881 Required Field Equipment • Propeller • Long Reach Glow Plug Wrench (HAN2510) • 2-Cycle Sport Plug (HAN3001) • 4-Cycle Super Plug (HAN3011) • Fuel • Metered Glow Driver w/Ni-Cd & Charger (HAN7101) • 2-Cycle Super Plug (HAN3006) • Manual Fuel Pump (HAN118) Warning An RC aircraft is not a toy! If misused, it can cause serious bodily harm and damage to property.
Section 1: Stabilizer Installation Required Parts • Wing • Fuselage • 1/4-20 x 2" nylon bolt (2) • Horizontal stabilizer • Elevator • Carbon fiber tail support rods Step 2 Measure and mark a centerline on the stabilizer using a felt-tipped pen. Required Tools and Adhesives • Thin CA • 30-minute epoxy • Flat blade screwdriver • Sandpaper • Drill bit: 1/16" (1.
Section 1: Stabilizer Installation Step 4 Step 7 Drill a 1/16" (1.5mm) hole in the center of each hinge slot. Drill holes for both the elevator and stabilizer. Slide the stab into the fuselage. Center the stab in the opening by measuring the distance from the fuselage to each tip. The stab is aligned when both measurements are identical. Step 5 Place the hinges in the elevator, resting the T-pins against the leading edge of the elevator.
Section 1: Stabilizer Installation Step 9 The last alignment step is making sure the wing and stabilizer are parallel. If they are not, lightly sand the opening in the fuselage for the stab until the stab rests parallel to the wing. Hint: A soldering iron or hot knife can be used as an option to the standard hobby knife. Cool Tip: Use a little rubbing alcohol and a paper towel to remove those felt-tipped marker lines once they are no longer needed.
Section 2: Vertical Fin Installation Required Parts • Wing • Vertical stabilizer Step 3 • Fuselage Required Tools and Adhesives • 30-minute epoxy • Sandpaper • Square • Ruler The vertical stabilizer (fin) is a bit easier to install than the stab. There is still some alignment that must be done, but it is a lot less tricky. Use a ruler to draw two lines from the end of the slot onto the fuselage as shown. Use a sharp hobby knife to remove the covering from between the lines.
Section 3: Hinging the Ailerons Required Parts • Wing • Aileron (left and right) Step 4 • CA hinges (10) Required Tools and Adhesives • Thin CA • T-pins • Drill bit: 1/16" (1.5mm) • Drill We recommend that you use the hinges provided. They work extremely well when installed as described. Even though the ailerons are large, we had absolutely no problems. Slide the aileron and wing together. The gap between the aileron and wing should be infinitely small, approximately 1/64" (.4mm).
Section 3: Hinging the Ailerons Note: Do not use CA accelerator during the hinging process. The CA must be allowed to soak into the hinge to provide the best bond. Using accelerator will not provide enough time for this process. Step 8 Move the aileron up and down several times to work in the hinges and check for proper movement. Step 6 Remove the T-pins from the hinges. Deflect the aileron and apply thin CA to each hinge. Make sure the hinge is fully saturated with CA.
Section 4: Rudder and Elevator Installation Required Parts • Fuselage assembly • Elevator (left and right) • Tail wheel assembly Step 3 • CA hinge (3) • Rudder • Fuselage filler Required Tools and Adhesives • Thin CA • T-pins • Medium sandpaper • Hobby knife • 6-minute epoxy • Petroleum jelly Apply a light coat of petroleum jelly onto the tail gear wire where the bearing will ride.
Section 4: Rudder and Elevator Installation Step 5 Locate the last three CA hinges, and place T-pins in the center, as was done for the ailerons and elevator. Install the hinges in the rudder. Cool Tip: You can combine the previous step with the following step if you like. This will hold the rudder in position while the epoxy cures. Step 8 Check to make sure the rudder moves freely. It should not rub against the fin at the tip. Apply thin CA to both sides of the hinge.
Section 5: Wheel Installation Required Parts • Landing gear • 1" (25mm) tail wheel 1 • 2 /4" (57mm) wheel (2) • 4-40 blind nut (2) • Fuselage assembly • 6-32 x 1/2" screw (2) • Wheel pant (left and right) • 5/32" x 1 1/8" axle w/nut (2) • 1/16" wheel collar w/setscrew • 4-40 x 1/2" socket head screw (2) • 5/32" wheel collar w/setscrew (4) Step 3 Attach the wheel to the axle using two wheel collars and setscrews. The exact position of the wheel will be determined after the wheel pant is installed.
Section 5: Wheel’s On! Step 5 Step 7 Position the wheel so it is centered in the wheel pant. Tighten the collars once the wheel has been positioned. Attach the tail wheel using a 5/32" wheel collar. Step 6 Note: Use threadlock on all the setscrews to prevent them from loosening during flight. Repeat Steps 2 through 5 for the other wheel pant.
Section 6: Engine Installation Required Parts • Fuselage assembly • Engine mount (2) • 6-32 x 3/4" screw (4) • Fuel tank 3 • 16 /8" outer pushrod tube • 18 1/8" pushrod wire • Clevis w/retainer • Fuel tubing • #6 x 5/8" socket head sheet metal screw (4) Step 2 Position the engine on the mount. Adjust the engine so the distance from the firewall to the drive washer is 4 1/2" (114mm). Use a clamp to hold the engine in position. Mark the locations for the engine mounting bolts.
Section 6: Engine Installation Step 4 Step 6 Attach the engine using four #6 x 5/8" socket head sheet metal screws. Test fit the throttle pushrod tube through the firewall and into the fuselage. Once satisfied with the fit, roughen the tube using sandpaper. Slide the tube back into position and use medium CA to glue it to the firewall. Allow 1/8" (3mm) of the pushrod to extend forward of the firewall. Trim the throttle pushrod at the front edge of the doubler on the throttle servo tray.
Section 6: Engine Installation Step 7 Step 10 Slide a clevis retainer onto a nylon clevis. Thread a clevis onto an 18 1/8" (460mm) pushrod wire, a minimum of 10 turns. Move the carburetor to the half-throttle position. Mark the pushrod where it crosses the throttle arm using a felt-tipped pen. Remove the pushrod and make a “Z” bend in the pushrod. Step 8 Install the servo hardware (grommets and eyelets) included with the servo.
Section 6: Engine Installation Step 11 Step 13 Remove the clevis from the pushrod. Slide the pushrod into the pushrod tube from the firewall. Attach the “Z” bend to throttle arm. Look at the side of the fuel tank to determine which direction the vent line is facing. It will be installed with the vent towards the top of the fuselage. Also check which piece of tubing is connected to the vent line. Install the fuel tank into the fuselage.
Section 7: Cowling Installation Required Parts • Fuselage assembly • Cowling • #2 x 1/2" sheet metal screw (4) Required Tools and Adhesives • Hobby scissors • Drill • Drill bit: 3/32" (2.5mm), 1/8" (3mm) • Phillips screwdriver (small) • Rotary tool w/sanding drum Step 3 Remove the cowl and remove the necessary material to fit the cowl over the engine. Install the engine back onto the firewall, and test fit the cowl over the engine. Cool Tip: Start by removing only a little material at a time.
Section 7: Cowling Installation Step 5 Step 8 Use the cardstock from Step 1 to locate the positions for the cowling screws. The goal is to drill into the firewall for the four screws that hold the cowling. Drill the locations using a 3/32" (2.5mm) drill bit. Remove a section of the cowl bottom to allow air to escape the cowling. Step 9 Step 6 Attach the cowl using four #2 x 1/2" sheet metal screws. Enlarge the holes drilled in the cowling using a 1/8" (3mm) drill bit.
Section 8: Servo Installation Required Parts • Fuselage assembly • Servo w/hardware (4) • Wing assembly Required Tools and Adhesives • Drill • Drill bit: 1/16" (1.5mm), 3/32" (2.5mm) • Phillips screwdriver (small) Cool Tip: Place a drop of thin CA onto each screw hole to harden the wood around the hole. Allow the CA to fully cure before installing the servos. Step 4 Attach an 18" (457mm) servo extension onto the rudder servo.
Section 8: Servo Installation Step 7 Step 9 Attach a 9" (229mm) servo extension to the aileron servo. Tie the string inside the wing onto the servo extension. Gently pull the extension through the wing using the string. Untie the string when the servo lead has been pulled through. Use tape to secure the servo lead to the wing to prevent it from falling back into the wing panel. Repeat Steps 6 through 8 for the other aileron servo.
Section 8: Servo Installation Step 12 Step 13 Mount the radio switch in the side of the fuselage. Route the antenna to the rear of the fuselage using the preinstalled antenna tube.
Section 8: Servo Installation Step 3 Step 5 Drill three 3/32" (2.5mm) holes through the elevator at the locations marked in the previous step. Place 2–3 drops of thin CA into the hole to harden the wood. Repeat this for each of the three holes. Physically place the elevator control surface in neutral. Mark the pushrod where it crosses the holes in the servo arm. Step 4 Attach the control horn using three 2-56 x 1/2” screws and the control back plate.
Section 8: Servo Installation Step 7 Step 9 Slide the wire through the outer hole in the elevator servo arm. Secure the wire using a nylon wire keeper. Slide a clevis retainer onto a nylon clevis. Thread a clevis onto a 7 7/8" (200mm) wire a minimum of 10 turns. Step 8 Step 10 Repeat Steps 1 through 7 for the rudder linkage. Before marking the location of the control horn, use the radio to deflect the rudder servo to its full throw.
Section 8: Servo Installation Step 12 Step 14 Install one of the #2 x 3/4" screws in a hole drilled, and then remove it. Place 2–3 drops of thin CA into the hole to harden the wood. This will eliminate the potential of the screw pulling out of the wood. Repeat this for each of the three holes. Center the aileron servo electronically using the radio system. Install a servo arm onto the aileron servo. Attach the pushrod with clevis to the control horn.
Section 10: Final Assembly Required Parts • Fuselage assembly • Wing assembly • Slide force generator (2) • Canopy • 4-40 x 1/2" socket head screw (6) Step 4 Apply a bead of Canopy Glue around the inside edge of the canopy. Position the canopy onto the hatch. Use tape to hold the canopy secure until the glue fully cures. Required Tools and Adhesives • Sandpaper (medium grit) • Canopy glue • Paper towel • Rubbing alcohol Step 1 Install a pilot of your choosing.
Center of Gravity Recommended CG Location An important part of preparing the aircraft for flight is properly balancing the model. This is especially important when various engines are mounted. Caution: Do not inadvertently skip this step! The recommended Center of Gravity (CG) range for the FuntanaX 50 is 5 1/16"–5 11/16" (129mm–144mm) behind the leading edge of the wing measured at the fuselage sides.
Preflight at the Field Charge both the transmitter and receiver pack for your airplane. Use the recommended charger supplied with your particular radio system, following the instructions provided with the radio. In most cases, you should charge your radio the night before going out flying. Check the radio installation and make sure all the control surfaces are moving correctly (i.e. the correct direction and with the recommended throws).
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2006 Official AMA National Model Aircraft Safety Code GENERAL 1) I will not fly my model aircraft in sanctioned events, air shows or model flying demonstrations until it has been proven to be airworthy by having been previously, successfully flight tested. 2) I will not fly my model higher than approximately 400 feet within 3 miles of an airport without notifying the airport operator. I will give rightof-way and avoid flying in the proximity of fullscale aircraft.
2006 Official AMA National Model Aircraft Safety Code 5) Flying sites separated by three miles or more are considered safe from site-to site interference, even when both sites use the same frequencies. Any circumstances under three miles separation require a frequency management arrangement, which may be either an allocation of specific frequencies for each site or testing to determine that freedom from interference exists.
5. © 2006 Horizon Hobby, Inc. 4105 Fieldstone Road Champaign, Illinois 61822 (877) 504-0233 horizonhobby.
