DeNight Special 50 ARF Assembly Manual Specifications Wingspan...................................................................................... 58.5 in (1486mm) Length........................................................................................... 45.4 in (1153 mm) Wing Area.............................................................................. 626 sq in (40.4sq dm) Weight.................................................................................. 6 1/4–7 lb (2.8–3.2 kg) Radio.
Table of Contents Contents of Kit and Parts Layout.................................2 UltraCote Covering Colors...........................................2 Included Parts Listing..................................................3 Important Warranty Information...................................4 Recommended Setup–2-stroke Glow..........................4 Recommended Setup–4-stroke Glow..........................4 Recommended Setup–Electric Power (EP)................4 Transmitter Requirements...................
Included Parts Listing Packaged in Kit Fuselage with hatch 1 Right wing 1 Left wing 1 Stabilzer with elevator halves 1 Fin and rudder 1 Cowl 1 Wheel pants 2 Landing gear 1 Cowl Bag Cowling 2 1/2-inch spinner with hardware 4-40 x 1/2-inch Allen head machine screws #4 steel washer Silicone tubing (1/4 inch) 1 1 4 4 4 cowl cowl cowl Rudder & Elevator Bag Elevator joiner Hinges Snap keeper Nylon clevis
Important Warranty Information Please read our Warranty and Liability Limitations section on page 46 before assembling this product. If you as the purchaser are not prepared to accept the liability associated with the use of this Product, you are advised to return this Product immediately in new and unused condition to the place of purchase. Recommended Setup–2-Stroke Glow ● Evolution .
Using the Manual Product Registration Workspace Preparation This manual is divided into sections to help make assembly easier to understand, and to provide breaks between each major section. In addition, check boxes have been placed next to each step to keep track of completed sections. Steps with a single box () are performed once, steps with two boxes () indicate the step needs to be repeated, such as for left and right wing panel, or two servos etc.
Landing Gear Installation Parts Required Fuselage Wheel pants (L & R) 2 3/4-inch wheels (2) 5/32-inch axles w/ nuts (2) Landing gear 5/32-inch wheel collars (4) #4 steel washers (2) 2.5 x 5mm Allen head screws (4) 4-40 x 3/8-inch Allen head machine screws (2) Tools Required Ruler 3/32-inch hex wrench 10mm wrench 2.5mm hex wrench Step 3 Place a small drop of threadlock onto a 2.5mm x 5mm Allen head screw and thread it into a 5/32-inch wheel collar.
Step 5 Slide a 2 3/4-inch wheel onto the axle. Prepare a second wheel collar with a machine screw and threadlock then install it on the axle over the flat spot to retain the wheel. Step 6 Slide a wheel pant into position over the wheel. Note that the landing gear angles forward and that there is a left and right wheel pant. DeNight Special 50 ARF Assembly Manual Step 7 Place a #4 steel washer on a 4-40 x 3/8-inch Allen head screw and apply a small drop of threadlock to the threads.
Step 11 Place the fuselage inverted on the workbench in a suitable stand, or remove the canopy using a 3/32inch hex wrench so that it does not get damaged. Set the landing gear in place and use a #2 Phillips screwdriver to secure it to the fuselage with the two 8-32 x 3/4-inch screws.
Step 4 Insert the stabilizer in the fuselage and slide it to the front of the slot. Use a ruler to measure the trailing edge length of the left and right sides. Adjust the position of the stabilizer until the dimensions are the same (approximately 8 5/8 inches). Step 5 Use the string to square the stabilizer to the fuselage by measuring to each tip. Place a tab of low-tack tape on the string to use as a reference point.
Step 10 Mix a small amount of 30-minute epoxy. Apply a thin layer to the bare wood on the top and bottom of the stabilizer then slide it into place in the fuselage. Make sure it is pushed all the way forward and use the marked lines to align it to the fuselage. Once the stabilizer is in place, use a paper towel and rubbing alcohol to clean any excess epoxy and remove the lines. Step 11 Prepare six CA hinges by inserting a T-pin in their centers.
Step 16 Remove the T-pins and push the stabilizer and elevator together to close the gap and fully seat the joiner in the groove in the elevator. Use rubbing alcohol on a paper towel to clean any excess epoxy that squeezes out. Step 17 Apply 3–4 drops of thin CA to each hinge. Do not use accelerator, the glue needs to penetrate the hinge for a complete bond. DeNight Special 50 ARF Assembly Manual Step 18 Perform steps 13 through 16 to install the opposite elevator half.
Step 22 Mix some 30-minute epoxy and use a mixing stick to apply it to the fin slot in the top of the fuselage and inside the opening for the tailpost.
Step 4 Remove the standard arm with a #1 Phillips screwdriver. Use sidecutters to remove three of the servo arms, leaving one short arm. Center the servo with your radio and reinstall the arm as shown. Step 5 Use a 5/64-inch drill bit in a pin vise to enlarge the outer hole in the servo arm. Use of this hole provides a servo arm length of 7/16 inch (11mm). DeNight Special 50 ARF Assembly Manual Step 6 Repeat steps 3 through 5 to prepare the elevator servo.
Step 9 Set the elevator servo in place and feed the servo lead through the same hole. Step 11 Use the screws provided with the servos to secure them to the servo tray with a #1 Phillips screwdriver. Step 10 Tuck the servo leads into the next hole forward so they don’t fall under the servo tray. Step 12 Insert the bent ends of the pushrods into the outer hole in the rudder servo arm and the inner hole of the elevator servo arm. Secure the pushrods to the servo arms with snap keepers.
Step 14 Repeat step 13 to connect the elevator pushrod to the outer hole of the elevator control horn.
Step 4 Use a ruler to locate the center of the opening in the aileron hatch and make a mark with a felt-tipped pen. Step 6 Use a pencil to mark the location of the servo on the inside of the aileron hatch. Step 5 Align the aileron servo arm with the mark and center it within the width of the cutout. Step 7 Mix some 30-minute epoxy and use it to glue the servo mounting blocks in place on the hatch.
Step 10 Apply 2–3 drops of thin CA to each of the mounting holes. Allow the CA to cure without using accelerator. Step 11 Connect a 9-inch extension lead to the servo. Use dental floss to secure the connection so they cannot become unplugged. Hint: Apply a very small drop of thin CA to the knot to prevent it coming loose. DeNight Special 50 ARF Assembly Manual Step 12 Secure the servo to the aileron hatch using a #1 Phillips screwdriver and the screws provided with the servo.
Step 16 Set the aileron hatch in place and use a #1 Phillips screwdriver to install it with four #2 x 3/8-inch woodscrews. Step 18 Slide a silicone keeper onto the pushrod, then thread on a clevis. With the servo centered, adjust the clevis so that the aileron trailing edge is aligned with the fixed portion of the wing trailing edge when the clevis is attached to the center hole in the control horn. Once adjusted, slide the silicone keeper over the clevis to prevent it opening accidentally.
Step 2 Locate the countersunk machine screws in the hardware provided with the motor. Apply a drop of threadlock to the threads of each screw and use a #1 Phillips screwdriver to secure the mount to the motor. Step 3 Locate the firewall drilling template and set it in place on the front of the firewall. Identify the holes marked with a triangle for electric power mounting and pilot drill the firewall with a 5/64-inch drill bit.
Step 8 Connect a 6-inch servo extension lead to the ESC. Secure the connection with dental floss so that it cannot come loose. Step 9 Feed the ESC battery, switch and signal leads through the cutout in the right-hand side of the bulkhead. Attach the ESC to the right-hand lower side of the motor box with double-sided adhesive tape. 20 Step 10 Connect the motor and ESC leads. Use small cable ties to secure the leads to the standoffs so they cannot interfere with the operation of the motor.
Cowling and Spinner Installation – Electric Power Parts Required Fuselage Cowling #4 steel washers (4) Silicone spacers (4) Propeller Propeller adapter 4-40 x 1/2-inch Allen head machine screws (4) 2 1/2 spinner with hardware Step 2 Slide the cowling into place and use the screws from the previous step to secure it to the fuselage with a 3/32-inch hex wrench.
Step 6 Slide the spinner backplate and propeller onto the propeller shaft. Locate the propeller blades midway between the small pin and hole in the backplate. Step 8 Press the spinner cone into place by engaging its alignment pins into the holes in the backplate. Check that the cutouts in the spinner cone are clear of the propeller blades then use a #1 Phillips screwdriver to secure the spinner with two #4 x 1/2-inch screws.
Step 2 Temporarily install the tray in the fuselage by using a 3/32-inch hex wrench to secure the tray to the fuselage with a 4-40 x 1/2-inch Allen screw and #4 steel washer. Step 3 There are two plywood tabs that get glued inside the motor box to hold the front of the battery tray down in flight. Apply medium CA to one long edge of a tab and glue it in place as shown. You may find it easier to install the tab by holding it with the blade of a hobby knife. Install the second tab on the opposite side.
Throttle Servo Installation Parts Required Fuselage Hook and loop strap Radio Servo with hardware EZ link Step 2 Prepare the throtte servo with grommets and bushings. Note that the bushings are installed from the bottom of the mounting lugs. Step 4 Insert the EZ link connector in the outer hole of the servo arm. Use needle-nose pliers to press the button keeper into place on the bottom of the arm. Step 3 Use a #1 Phillips screwdriver to remove the servo arm from the servo.
Step 6 Use a #1 Phillips screwdriver to thread a servo mounting screw into each of the pre-drilled holes for the throttle servo, then remove the screw. Step 7 Apply 1–2 drops of thin CA to each of the holes to strengthen the wood. Allow the CA to cure without using accelerator. Step 8 Feed the throttle servo lead into the servo opening then under the tray to exit the same hole as the rudder and elevator servo leads.
Step 2 Use an 11/64-inch drill bit in a drill motor to make a hole at the marked location. Step 3 Use medium CA to glue a long throttle pushrod standoff into the slot inside of the motor box on the right-hand side ahead of the cutout. 26 Step 4 Set the firewall template in place and use a 5/64-inch drill bit to pilot drill the holes marked with circles for the 2-stroke installation. Step 6 Place a #8 steel washer on each of the 8-32 x 3/4inch Phillips head machine screws.
Step 8 Place the fuselage left-hand side down in a suitable stand. Set the engine on the mount and position it so the face of the drive washer is 4 5/8 inches from the forward face of the firewall. Step 10 Remove the engine. Use a 9/64-inch bit in a drill motor to drill the holes in the engine mount. Make sure you keep the drill perpendicular to the mount while drilling the holes. Step 9 Insert a 5/32-inch drill bit in the engine lug holes and twist it by hand to mark the engine mount locations.
Step 14 Use a cutoff wheel in a rotary tool to cut 3 1/4 inches from the end of the throttle pushrod that has the Z-bend. The remaining pushrod will be 13 3/4 inches long and have one threaded end. Slide a silicone keeper onto the pushrod then thread on a clevis until approximately five threads are past the barrel. Step 15 Insert the pushrod into the housing from the firewall end and slide it into the EZ link on the throttle servo.
Step 2 Use a #1 Phillips screwdriver to remove the two carburetor retaining screws on the rear of the engine. Remove the carburetor and rotate it 180 degrees so the needle valve is on the left-hand side. Reinstall the screws to secure the carburetor. Step 3 Use a 5/64-inch drill bit in a pin vise to enlarge the center hole in the carburetor throttle arm.
Step 8 Place a #8 steel washer on each of the 8-32 x 3/4inch Phillips head machine screws. Insert the screws into the mounting holes in the engine mounts. Step 9 Press an 8-32 blind nut into each hole from the back of the firewall. Apply a drop of threadlock to the threads of each engine mount screw and install the mounts with a #2 Phillips screwdriver to draw the blind nuts into place. Note that the relieved areas of the engine mount webs face to the right.
Step 14 Slide the plywood standoff forward on the housing to a position just ahead of the cutout in the side of the motor box. Let it find its natural position and glue it in place with medium CA. Step 15 Place the fuselage left-hand side down in a suitable stand. Set the engine on the mount and position it so the face of the drive washer is 4 5/8 inches from the forward face of the firewall.
Step 20 Use a 1.5mm hex wrench to remove the throttle arm from the carburetor. Slide the arm onto the throttle pushrod Z-bend then replace the arm on the carburetor. Set the arm so the Z-bend is just clear when the carburetor barrel is in the fully open position, then secure the arm in position with the 1.5mm wrench. After installation you may need to use pliers to make a slight bend in the pushrod for smoothest operation.
Step 2 Identify the vent and feed lines in the fuel tank. Make sure the pink fuel line on the right-hand side is connected to the vent tube going to the top of the tank. Slide the tank into the fuselage and pass the fuel lines through the hole in the firewall then engage the neck of the tank in the hole. Step 3 Open the foam kit and locate the denser piece of foam measuring 4 x 2 3/4 inches. Slide it underneath the fuel tank.
Step 8 Cut a 7 inch long piece of medium fuel tubing and attach it to the tee fitting. This will be the fuel tank fill line and get routed to the fuel dot assembly. Step 10 Slide the body of the fuel dot through the hole in the cowling. Apply a small amount of threadlock inside the cowling at the base of the threads, then thread on the retaining nut to secure the fuel dot.
Step 14 Remove the template. Use a cutoff wheel and drum sander in a rotary tool to make the cutout in the cowling. Step 15 Use canopy glue to glue the cooling baffle into the righthand cheek of the cowling. Shown here is the 2-stroke installation for which the baffle is installed stock. Maintain a 1/4 -inch (6mm) space between the forward end of the baffle side and the inlet in the cheek of the cowling.
Step 18 Use the following pictures as a guide to cut an opening in the cowl to clear the muffler. Take your time and check the fit often as you proceed. There should be approximately 1/4 inch clearance around the muffler when the cowl is installed. Step 19 Use a 3/32-inch hex wrench to install the hatch. Step 20 Cut a 9 x 2 inch piece of Manila card stock to serve as a template for locating the needle valve cutout in the cowling.
Step 23 Remove the template, hatch and cowling then use a tapered reamer to make a hole in the cowling for the needle valve. Step 25 Slide an exhaust deflector onto the muffler exit. Use the cable ties provided with the deflector to secure it to the muffler and use sidecutters to trim the excess from the cable ties. Step 26 Slide the cowling part way over the engine.
Step 27 Slide the cowl the rest of the way onto the fuselage and use a 3/32-inch hex wrench to secure it with four 4-40 x 1/2-inch Allen screws, #4 steel washers and 1/4-inch lengths of silicone tubing. Step 28 Insert the plug into the fuel fill line and press the plug into the body of the fuel dot. 38 Step 29 Reinstall the needle valve and ratchet spring. Step 31 Install the spinner cone and check that it does not contact the propeller. Adjust the position of the propeller if necessary.
Receiver, Battery and Switch Installation Parts Required Fuselage Receiver Battery Switch Hook and loop strap Foam receiver insulation Step 2 Use a 3/64-inch drill bit in a pin vise to drill the mounting holes through the plywood backing plate in the fuselage. Step 4 Install the switch using a #1 Phillips screwdriver and the woodscrews provided with the switch.
Step 6 Use a piece of double-sided adhesive tape to attach the remote receiver to the left motor box side frame behind the fuel tank. Pilot Installation Parts Required Hatch Pilot bust Step 2 Set the helmet in place on top of the bust and allow the glue to dry. Pilot helmet Tools Required Canopy glue Step 1 Apply a bead of canopy glue to the top of the pilot bust. Step 7 Attach the battery to the radio compartment floor with double-sided adhesive tape.
Final Assembly Parts Required Fuselage Wing panels Canopy Wing tube #4 steel washers (2) 4-40 x 3/8-inch Allen head machine screws (2) 4-40 x 5/8-inch Allen head machine screws (2) 9-inch servo extensions (2) Tools Required 3/32-inch hex wrench Thin CA Step 2 Plug the male lead from the switch into the battery port of the receiver. Step 4 Plug a 9-inch servo extension lead into the aileron and an auxiliary channel port in the receiver.
Step 5 Install the canopy and secure it with two 4-40 x 3/8inch Allen head screws using a 3/32-inch hex wrench. Step 7 Slide the wings onto the tube and connect the aileron leads from the wing to the servo extension leads from the receiver. Step 9 Slide the wing panels all the way against the fuselage, engaging the anti-rotation pins in the wing with the holes in the wing root.
Center of Gravity An important part of preparing the aircraft for flight is properly balancing the model. Caution: Do not inadvertently skip this step! The recommended Center of Gravity (CG) location for your model is 2 5/8 (67mm) to 3 1/8 inches (79mm) behind the leading edge of the wing where it meets the fuselage. Mark the location for the Center of Gravity on a piece of low-tack tape on the top of the wing next to the fuselage as shown.
Flight Preparations Maintaining Your Model Flight preparations should be performed each time you travel to the flying field. Because your model will encounter a variety of situations, it is best to keep an eye on the various components of your model to keep it in the best flying condition. The following is a check list you should follow every time you have completed a flying session with your model. Doing so will keep your aircraft in the best flying condition.
Safety Do’s and Don’ts for Pilots ● Ensure your batteries have been properly charged prior to your initial flight. ● Keep track of the time the system is turned on so you will know how long you can safely operate your system. ● Perform a ground range check prior to the initial flight of the day. See the “Daily Flight Checks Section” for information. ● Check all control surfaces prior to each takeoff.
Warranty Information Warranty Period Exclusive Warranty- Horizon Hobby, Inc., (Horizon) warranties that the Products purchased (the “Product”) will be free from defects in materials and workmanship at the date of purchase by the Purchaser. Limited Warranty (a) This warranty is limited to the original Purchaser (“Purchaser”) and is not transferable. REPAIR OR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS THE EXCLUSIVE REMEDY OF THE PURCHASER.
Non-Warranty Repairs Should your repair not be covered by warranty the repair will be completed and payment will be required without notification or estimate of the expense unless the expense exceeds 50% of the retail purchase cost. By submitting the item for repair you are agreeing to payment of the repair without notification. Repair estimates are available upon request. You must include this request with your repair. Non-warranty repair estimates will be billed a minimum of ½ hour of labor.
Academy of Model Aeronautics National Model Aircraft Safety Code Effective January 1, 2010 GENERAL A model aircraft shall be defined as a non-humancarrying aircraft capable of sustained flight in the atmosphere. It may not exceed limitations established in this code and is intended to be used exclusively for sport, recreation, and/or competition. 1.
Templates Align to rear edge of cowl Evo .46 Saito .
DeNight Special 50 ARF Assembly Manual
Building and Flying Notes DeNight Special 50 ARF Assembly Manual 51
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