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arf YAK55M 60CC Instruction Manual

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ARF MODEL
YAK55M 60CC
Instruction Manual

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Summary of Contents for arf YAK55M 60CC

  • Page 1 ARF MODEL YAK55M 60CC Instruction Manual...
  • Page 2 Dear Customer, Thanks for purchasing this newly designed YAK55M 60CC aerobatic RC airplane. The weight is approximately 18Lbs（8000g）. It’s good for IMAC and free style flying. It’s a beautiful plane with amazing flight performance. The newly released Yak55M 60cc is desinged to accommodate twin gas engine.

  • Page 3: Specifications

    By the act of using the final assembled model, the purchaser/operator accepts all resulting liability. ARF MODELS WARRANTY AND RETURN POLICY We guarantee that the plane is in perfect condition at purchase. The warranty will be voided after modifications and usages. If you have any questions or find any issues, please contact the distributors in your area.
  • Page 4 PVC canopy • Pocket Style Scale Hinging • Larger aileron and elevator design for excellent 3D aerobatic flying • Removable rudder • Includes Side Force Generator’s(SFG)
  • Page 5 • CNC anodized aluminum Canopy Bolts • Full length Tuned pipe tunnel designed into fuselage • Adjustable pushrods for easy fine tuning(Includes wrench)
  • Page 6 • Servo extension safety connector clips • High performance cap head bolts • Honeycomb board carton packing for safer transportation...
  • Page 7 • High quality 3mm ball links assembly • New dual fiberglass horn assembly...
  • Page 8 • Carbon fiber tail wheel assembly • High-quality durable rubber wheels • Improved new Axles (the material of the Axle is stainless steel )
  • Page 9 • Carbon fiber landing gear • Increased diameter carbon fiber wing tube than previous V1 version. • Two Carbon fiber stab tube...
  • Page 10 • The YAK is designed to directly accommodate KUZA® rudder servo tray. • New KUZA Fuel Tank Assembly with aluminum tank cap...
  • Page 11 Scheme A : Red/White/ blue...
  • Page 12 Scheme B : Yellow /black/ red...
  • Page 13 Items Required to Complete This Model: • Two switches with charging jacks for the Rx • 50-70CC Gas engine and exhaust • Two high quality Rx batteries of significant • Appropriate propeller for your Motor capacity to power your choice of servos. •...
  • Page 14 A heat gun may also be used along with a soft cotton cloth to shrink and adhere the covering. Again, be extremely careful when using a heat gun. 2. Be sure to seal any exposed wood with a thin coating of epoxy to prevent engine oil from soaking in.
  • Page 15 Make sure to sand the horns so the surface is rough to glue correctly. Pushrods(Bag No. KA05CBG3) Four 3x61mm pushrods for ailerons. One 3x125mm pushrods rudder （Pull-push style）...
  • Page 16 Pull-pull assembly kits for the rudder. (Bag No. KA05CD) Ball link assemblies (Bag No. KAG00131): 8 for ailerons and elevators. 6 Servo extension safety connector clips (Bag No. KAG0021)
  • Page 17 Main rubber wheels (Bag No. KAG014B)：2PCS New stainless steel Axle kits (Bag No. KA05CH): 2PCS New Carbon fiber tail wheel assembly. (Bag No. KAG0104)
  • Page 18 4mm ALU canopy bolts & 12mm PTFE washers (Bag No.KAG0043) Side force generators (Four 3x20mm Hexagon bolts & 4 Washers) Bolts for landing gear: 4(4x20mm) hex bolts and 4(M4) stainless steel self-locking nuts & 4 washers...
  • Page 19 Bolts & washers for cowl: 4(3x16mm) Hexagon bolts and 2(10mm) PTFE washers and 2 wsahers 4 allen keys(Bag No. KA05CE) Bolts & washers for stab tails: 4(3x12mm) Hexagon bolts and 4(10mm) PTFE washers...

  • Page 20: Wing Assembly

    Washers for gas engine: 12(20mm) POM washers Wing Assembly 1.Aileron push rod linkage set. 3x61mm Pushrods for aileron. 2.It is much easier to install the twin control horns before installing the wing. Locate the fiberglass aileron control horns, ball links, and associated bolts and nylon-insert lock nuts. Use some fine sandpaper to...
  • Page 21 roughen up the center areas of the two control horns so that the glue adheres better. Using a sharp hobby knife cut the covering away from the slots in the rudder and trial fit the two control horns. 3. Mix up some 30 minute epoxy and coat the inside of the slots and the center of the control horns. Hint: a scrap piece of 1/16”...

  • Page 22: Elevator Assembly

    9. Cut the covering from the aileron servo openings from corner to corner and iron down inside the openings. Connect servo wire extensions to your servos and secure the connections with the supplied clips, your own clips, or tape. Feed the servo wires into the wing and out the root. Install the servos and screw firmly in place.
  • Page 23 2. Find the slots for the control arms in the elevators and remove the covering where the horns are inserted and the area for the plate. 3. Sand the area on the horn that will be glued inside the elevator. 4.
  • Page 24 REPEAT FOR THE OTHER SIDE 5. Place long arms onto the servo’s you are planning to use for the elevators. We recommend using KUZA 1.75” aluminium CNC servo arm (sold separately) for elevator control. 6. Place the servo into the elevator and screw in place. Remember to harden the holes with thin Cyano. 7.

  • Page 25: Rudder Assembly

    Use nutlock on the servo arm screw. 8. Fit the pushrod in place remembering one end is reverse threaded. Set it so the arm is centered and the elevator is flat. Choose the holes depending on how much deflection you require. Rudder Assembly 1．...
  • Page 26 2．The YAK is supplied with a high quality set of pull-pull cables and ball-links. 3．Locate the pull-pull cable set, threaded couplers, brass swaging tubes, and ball-links. If the cable is one long piece, cut it into two equal length pieces. Thread one end of the one cable through a brass tube and then through one of the threaded couplers.
  • Page 27 loose end of each cable into the cable slots at the rear of the fuselage and feed them forward towards the servo mount location. A coat hanger with a hook on the end can be useful here if you can’t reach the cable. 5.Use your radio system to center the rudder servo and attach either the supplied arm or an appropriate arm for your servo.
  • Page 28 8．This YAK 60cc is designed to directly accommodate KUZA® rudder servo tray, and so will be all other pending ARF airplanes that are 60cc or greater. 9．You will need to provide 3X42 mm push rods (2 Pcs) and ball links (4 Pcs), depending on the servo of your choice, a KUZA 3.25”...
  • Page 30 11． The YAK also provides pull-push style for rudder. Below is picture of pull-push style linkage set. Cut off excess fiberglass rudder horn, and use sandpaper to roughen up the parts needed to inlay. Use epoxy glue to glue the rudder horn. Use 3X125mm push rod to connect to the horn.

  • Page 31: Tail Wheel Installation

    Tail Wheel Installation 1. Begin the tail wheel assembly by installing the hollow hex bolt and lock nut into the large hole at the rear of the tail wheel bracket. 2． Slide 3 wheel collars and the wheel onto the pre-bent tail wheel wire and tighten in place with thread lock as shown below.
  • Page 32 3．Install steering rod, again, the use of thread-lock on any metal to metal screw is advised.
  • Page 33 4．There are 3 pre-installed blind nuts on the rear of the fuselage, locate the screw holes and puncture the covering. Then install the CF tail wheel bracket with M3 hex bolts and washers. 5．Drill a screw hole on the bottom of rudder, 200-220 mm away from the hinge line, with 2 mm drill bit. Secure one end of the wheel spring with a M3 12mm self-threaded screw, then hook the other end onto the steering rod.

  • Page 34: Main Landing Gear Installation

    6．Fully installed tail wheel assembly is shown below. Main Landing Gear Installation 1. Locate the supplied main landing gear parts and sort them out on your workbench.
  • Page 35 2. Bolt the main gear to the bottom of the fuselage using the supplied bolts. Place the nuts in through the can tunnel opening with appropriate size spanner. Remember the gear will rake forward. 3. Loosen out the second nut, then apply 30 minute epoxy glue on the axle. Tighten the nut back in place, allow at least 1 hours for threadlocker to dry.
  • Page 36 4. Install the main wheel axles to the composite landing gear and tighten the nylon-insert lock nut. Install one wheel collar onto the axle. Use a second wheel collar as a guide to leave a gap on the inboard of the axle.
  • Page 37 ENGINE, EXHAUST, & FUEL SYSTEM 1. The newly released Yak55M 60cc is desinged to accommodate twin gas engine. 2.Templates are provided in the kit for both DA and 3W 50 cc engines as well as the DA 60 engine. Select the proper guide for your engine and mark and drill the mounting holes and cut out the center as indicated.
  • Page 38 3. Fit the Cowl and measure the distance from the engine bulkhead to the front of the cowl, add approx 2-3mm for the spinner back plate and this is the length that your engine should be set Using the correct length stand offs, mount your engine securely using bolts, 20mm POM washers, and locknuts.
  • Page 39 5. Assemble the throttle servo mount using the supplied laser cut parts or there is a servo cutout in the bottom of the engine box for 50cc-70cc engines. Mount your throttle servo and complete your linkage setup. A hole will need to be drilled on the firewall to allow the pushrod to connect to the throttle arm on the carb.
  • Page 40 7. The new KUZA Fuel Tank with aluminum tank cap is preassembled. Complete the installation in the fuselage using zip ties or velcro straps to hold the tank in position. Connect a fuel line between the tank and carb, a fuel line between the tank vent and the bottom of the fuselage, and a fill line to a fueling port which can be mounted on the fuselage side opposite your ignition switch.
  • Page 41 Canister Fitting Tuned Pipe Mounting...

  • Page 42: Cowling Installation

    The YAK comes with many openings for the exhaust outlet, line up the exhaust then remove the covering for the required outlet. They come with covers that can be used for cooling. Use a soldering iron to open up the holes. COWLING INSTALLATION With the engine fitted, tape a piece of card to the bottom of the fuselage that can overlap the cylinder head.
  • Page 43 2. Mark onto the cowel the area to remove, and remove with a dremel. As the YAK has a scale inlet, depending on your engine it may need to be removed. If it is still attached it may be beneficial to strengthen with a small amount of glass cloth. •...
  • Page 44 • When the cowl clears the engine etc correctly the prop shaft of the engine will be in the centre of the cowl. 3.The cowl is secured with four 3 X 16mm bolts and washers. Apply nutlock onto the bolts as the vibration from the gas engine will shake them come loose. Labels are provided for aligning the drill holes for the cowl.
  • Page 45 FINAL RADIO SYSTEM INSTALLATION 1. Whether you 72 MHz systems or the newer 2.4 GHz systems, proper radio installation and care is vital to the safe and reliable operation of your aircraft. Follow the manufacturer’s instruction for installation guidance of receivers and batteries paying attention to factors such as vibration isolation, adequate cooling, and clearances.
  • Page 46 6. Check all radio programming and control surface operations thouroughly before your initial flight. Check your radio range according to the radio manufacturer’s instructions both with the engine off and running. BALANCING and PRE-FLIGHT 1. Most state of the art aerobatic aircraft allow for a wide margin for balancing depending on what level of precision or freestyle the pilot prefers.
  • Page 47 FINAL ASSEMBLY AND PRE-FLIGHT INSPECTIONS 1. Before arriving at your flying field, be sure all your batteries are properly charged and all radio systems are in proper working order. 2. Installation of Rudder Rudder is removable for convenience in transportation, it is connected to fuselage by inserting a 3 mm fiber rod through the hinge line.
  • Page 48 3．Installation of Elevators Connect servo extension wire, secure with safe clips. Attach elevators with 3x12mm Hex-head bolts and 10mm PTFE washers. Check these after every flight. 4.Install the wings onto the fuselage being careful to align the wing tube with the wings and not force it. The wing tube may be initially tight but will loosen some with use.
  • Page 49 5. Side force generators Assembly. Cut the wing film needed to be instal the SFG. Fixed the SFG Use M3X20 cap head bolts and washers. 6. Fill your fuel tank making sure your vent line is not plugged or capped. With the canopy off, this is a good time to check for any fuel leaks.
  • Page 50 8. If you have removed your horizontal stabilizers, install them once again and check all bolts and connections. 9. Check all control surfaces for secure hinges by performed a slight tug on the control surfaces and observing if there is any give in the hinges. Check all control rods, ball links, servo screws, etc. for proper operation and installation.
  • Page 51 47mm/1.75in Single No. KAG0S7F 100mm/4in Dual No. KAG0D723F For Hitec servo（24T）： 47mm/1.75in Single No. KAG0S7H 100mm/4in Dual No. KAG0D73H For JR servo（23T）： 47mm/1.75in Single No. KAG0S73J 100mm/4in Dual No. KAG0D73J...
  • Page 52 * KUZA new Wingbag for 60CC Two color to choose: red/ black, blue / silver KAG0093 * 3.5in C.F spinner (Not Included)