Fokker DVII 250 Slow Flyer ARF Assembly Manual Specifications Wingspan: Wing Area: Length: Weight w/o Battery: Weight w/Battery: 34.0 in (865mm) 310 sq in (19.4 sq dm) 26.5 in (672mm) 7.20–7.50 oz (204–212 g) 8.50–9.
Table of Contents Specifications.......................................................... 1 Introduction............................................................ 2 Important Information Regarding Warranty Information......................................... 2 Using the Manual.................................................... 2 Contents of Kit/Parts Layout..................................... 2 Recommended Radio Equipment.............................. 3 Required Tools and Adhesives.....................
Recommended Radio Equipment You will need a minimum 4-channel transmitter, receiver and two servos. You can choose to purchase a complete radio system. If you are using an existing transmitter, just purchase the other required equipment separately. We recommend the crystalfree, interference-free Spektrum™ DX5e 2.4GHz DSM® 5-channel system. If using your own transmitter, we recommend the E-flite® S60 Sub-Micro servos.
Motor Installation - Carbon Tube 2. Locate the 6mm x 42mm carbon tube. Follow the instructions included with the motor to glue (using RTV silicone) the motor to the motor tube. Be careful not to get glue inside the motor bearing. 3. Use medium grit sandpaper to roughen the outside of the carbon tube so the CA used to glue it in the fuselage has a surface to attach to. Required Parts Fuselage assembly Motor with mounting hardware Carbon tube, 6mm x 42mm 4.
Motor Installation - Firewall Mount Required Parts Fuselage assembly Motor with mounting hardware 2. The motor shaft must be repositioned to accept the propeller adapter. Follow the instructions provided with the motor to reposition the motor shaft. Use care not to damage the motor. Required Tools and Adhesives Phillips screwdriver: #1 Flat blade screwdriver: 1.5mm Ruler 1. Use a #1 Phillips screwdriver to remove the three screws holding the cowl to the fuselage. Set the screws and cowl aside.
4. Slide the propeller adapter on the motor and use a .050-inch hex wrench to tighten the setscrew that secures the adapter to the motor shaft. Make sure to position the edge where the propeller will rest at a minimum of 13/8 inches (35mm) forward of the firewall as shown. Speed Control Installation Required Parts Fuselage assembly Speed control Tie wrap (not included) Two-sided tape 2. Connect the wires from the motor to the appropriate wires of the speed control.
Servo Installation Required Parts Fuselage Servo with hardware (2) Receiver Micro pushrod connector (2) Micro pushrod connector backplate (2) 2. Position the rudder servo in the opening at the front of the fuselage as shown. Slide the servo as far back in the opening as possible. Use a pencil to mark the position for the screws that will be used to secure the rudder servo. 4. Apply 2–3 drops of thin CA into each of the holes to harden the surrounding wood.
7. Use a pin drill and 1/16-inch (1.5mm) drill bit to enlarge the outermost hole in the servo arm. It is best to support the fuselage with the palm of your hand while installing the servo screws. The plywood structure is strong enough for the model and flight loads but could fail if extreme downward pressure is placed on it during the servo mount screw installation. 8 9. Use a micro pushrod connector backplate to secure the pushrod connector to the servo arm.
11. Use a #0 Phillips screwdriver to install the servo arm on the rudder servo. The arm will be parallel to the center line of the servo as shown. 13. Connect the rudder, elevator and throttle leads to their appropriate ports of the receiver. Leave the receiver loose at this time as it will be installed after the landing gear is installed.
2. Slide the tab on the micro control horn through the elevator from the bottom side as shown. 4. Apply 2–3 drops of foam-safe CA to the joint between the backplate and control horn to keep it secure for the life of your model. 3. Slide the micro control horn backplate on the tab from the control horn. It will ratchet down and lock into position. Slide the backplate so it holds the control horn tightly in position. 10 6. Insert the tabs from the fin into the slots in the stabilizer.
8. Slide the tail assembly in position on the fuselage. Make sure the hinge on the rudder goes into the slot at the rear of the fuselage. The tabs on the fin will fit into the slots in the fuselage. The rudder will fit close to the fuselage as shown in the second photo when the stabilizer is positioned correctly. 9. Before using foam-safe CA to glue the tail in position you must check its alignment to the fuselage. The stabilizer must be parallel to your work surface.
3. Slide a micro pushrod keeper onto the wire extending through the control horn. 5. Use a ruler to align the rudder and fin in the neutral position. 4. The pushrod keeper can now be snapped onto the pushrod wire. You may need to use pliers to apply enough pressure to snap the keeper onto the wire. 6. Turn on the transmitter and make sure the rudder stick and trim are centered. Use a #1 Phillips screwdriver to tighten the 1.
9. Use a #1 Phillips screwdriver to tighten the 1.5mm machine screw that will secure the pushrod wire in the pushrod connector. Use threadlock on the screw to prevent it from vibrating loose in flight. Cowling Installation Required Parts Fuselage assembly Transmitter Propeller Motor battery Cowling 2mm x 8mm wood screw (black) (3) 2. Turn on the transmitter and bring the throttle trim and stick to the low throttle position.
Scale Accessory Installation Required Parts Airframe Required Parts Machine gun (right and left) Required Tools and Adhesives Foam-safe CA Bottom Wing 1. Use foam-safe CA to attach the machine gun to the top of the fuselage. Cabane Strut Installation Required Parts Fuselage assembly Bottom wing 2mm x 8mm wood screw (4) Required Tools and Adhesives Phillips screwdriver: #1 1. Use a #1 Phillips screwdriver and four 2mm x 8mm wood screws to secure the bottom wing to the fuselage.
3. Set the top wing in place and align the trailing edges looking down from above. You will notice a slight amount of adjustment is required on the cabane struts. Top Wing and Outer Strut Installation Required Parts Airframe Outer strut (2) Top wing Required Tools and Adhesives Foam-safe CA 1. Use foam-safe CA to glue the top wing to the cabane strut. 3.
3. Use foam-safe CA to glue the outer strut to the top and bottom wing after checking the fit of the strut. Allow the CA to fully cure before proceeding. Landing Gear Installation Required Parts Fuselage assembly Landing gear Wheel (2) Wheel retainer (2) Double-sided tape 2. Slide the wheel retainer onto the landing gear wire. Use a drop of foam-safe CA on the side away from the wheel to secure the retainer. Make sure not to get CA on the wheel or axle, preventing the wheel from rotating.
4. Make sure the receiver is out of the way of the landing gear area as well as the connector for the battery on the speed control. 5. Slide the landing gear in the fuselage. The rear of the gear fits into the slot in the middle of the bottom wing, while the front of the gear fits between the formers of the fuselage right behind the cowling. Press the gear in until fully seated, making sure not to damage the fuselage in the process. E-flite Fokker DVII 250 Slow Flyer Assembly Manual 6.
Rigging Installation Required Parts Airframe Motor battery 2. Insert the rigging thread into the lower forward hole in the outer strut. 4. Route the rigging down to the forward hole in the outer strut. 3. The rigging then is routed to the cabane strut and goes through the holes in the cabane that are to the front of the aircraft. 5. Next, the rigging will go up and to the rear hole in the outer strut as shown.
6. The rigging will now go through the rear tube in the fuselage. Note that the rigging in this step must be behind the rigging headed upward (Step 3). 7. After exiting the tube, route the rigging up and to the rear hole in the outer cabane strut as shown. E-flite Fokker DVII 250 Slow Flyer Assembly Manual 8. To complete the first stage of rigging, tie the rigging at the top of the strut as shown. Use lowtack tape to secure the tape on the underside of the bottom wing.
11. The rigging now heads to the rear hole in the outer strut. Again, this line will be in front of the current rigging lines. 12. Route the rigging up and to the forward hole in the outer strut. 20 13. The rigging now goes down and through the forward tube in the fuselage. This line will be in front of all the other rigging lines. 15. This completes the second stage of rigging. Use low-tack tape to secure the tape on the underside of the bottom wing.
16. Use the following images to verify the rigging installation. When tensioned, the lines will all run perfectly straight and not cause others to be moved out of position. E-flite Fokker DVII 250 Slow Flyer Assembly Manual 17. Apply light tension on the rigging lines. Use a drop of foam-safe CA at each point the rigging passes through the struts. Allow the CA to fully cure before moving your model. Don’t forget to tie the ends that were taped to the bottom of the wing at this time as well.
Center of Gravity An important part of preparing the aircraft for flight is properly balancing the model. Caution: Do not inadvertently skip this step! Control Throws The recommended Center of Gravity (CG) location for the Fokker DVII 250 Slow Flyer is 13/4 to 2 inches (44 to 51mm) back from the leading edge of the top wing as shown with the battery pack installed.
Preflight Check Your Radio Before going to the field, be sure that your batteries are fully charged per the instructions included with your radio. 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, the radio should be charged the night before going out flying. Before each flying session, be sure to range check your radio.
Safety Do’s and Don’ts for Pilots • Check all control surfaces prior to each takeoff. • o not fly your model near spectators, parking D areas or any other area that could result in injury to people or damage of property. • o not fly during adverse weather conditions. Poor D visibility can cause disorientation and loss of control of your aircraft. Strong winds can cause similar problems. • • 24 o not take chances.
Damage Limits HORIZON SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCT, WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY. Further, in no event shall the liability of Horizon exceed the individual price of the Product on which liability is asserted.
United Kingdom: Electronics and engines requiring inspection or repair should be shipped to the following address: Horizon Hobby UK Units 1-4 Ployters Rd Staple Tye Harlow, Essex CM18 7NS United Kingdom Please call +44 (0) 1279 641 097 or e-mail us at sales@horizonhobby.co.uk with any questions or concerns regarding this product or warranty.
8. 9. I will not operate model aircraft carrying pyrotechnic devices which explode burn, or propel a projectile of any kind. Exceptions include Free Flight fuses or devices that burn producing smoke and are securely attached to the model aircraft during flight. Rocket motors up to a G-series size may be used, provided they remain firmly attached to the model aircraft during flight.
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