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YAK 52

“Graphics and specifications may change without notice”.

MS:119

ASSEMBLY MANUAL

Specifications:

Wing span ----------------------------63.4in (161cm).
Wing area -----------------689.8sq.in (44.5sq dm).
Weight ------------------------9.3-10.1lbs (4.2-4.6kg).
Length ------------------------------51.7in (131.3cm).
Engine  ------------------ 0.91cu.in ---------2-stroke.
                                     1.20cu.in ---------4-stroke.
Radio -------------------6 channels with 8  servos.
Retracts landing gear (included).

Summary of Contents for YAK 52

Page 1: ...ut notice MS 119 ASSEMBLY MANUAL Specifications Wingspan 63 4in 161cm Wingarea 689 8sq in 44 5sqdm Weight 9 3 10 1lbs 4 2 4 6kg Length 51 7in 131 3cm Engine 0 91cu in 2 stroke 1 20cu in 4 stroke Radio...

Page 2: ...to help you build a great flying aeroplane Please read this manual thoroughly before starting assembly of your YAK 52 Use the parts listing below to identify all parts WARNING Please be aware that thi...

Page 3: ...a high quality thin C A glue 2 Remove each hinge from the wing panel and aileron and place a T pin in the center of each hinge Slide each hinge into the aileron until the T pin is snug against the ail...

Page 4: ...posite side Apply thin C A glue to each hinge making sure that the C A penetrates into both the aileron and wing panel Work the aileron up and down several times to work in the hinges and check for pr...

Page 5: ...MBLY Remove covering Fill epoxy Covering Wing tip 1 Attach the plastic wing tip to the wing Use a hobby knife to remove the covering at the wing end 2 Apply the epoxy to the surface of both wing tip a...

Page 6: ...n the wing and over the wing tip 1 Locate the hardware necessary to install the control horns for the ailerons 2 Position the control horn on the bottom of the aileron You will see pre drill hole 3mm...

Page 7: ...l horn T pin C A glue C A glue T pin C A glue Install the elevator control horn using the same method as same as the aileron control horns INSTALL ELEVATOR CONTROL HORN CONTROLHORNM3SCREW M3 lock nut...

Page 8: ...age 18mm Epoxy Rudder INSTALL RUDDER CONTROL HORN 1 sets 3x50mm Aluminum Washer CONTROLHORN M3 SCREW M3 LOCK NUT Epoxy Aluminum Washer Elevator 18mm Epoxy Elevator Elevator control horn Horizontal Sta...

Page 9: ...crews Make sure to use threadlock on the screws to help prevent them from vibrating loose 4x30mm Thread locker glue 1 Using a modeling knife carefully cut off the rear portion of one of the 3 nylon tu...

Page 10: ...ube Fuel pick up tube Fuel fill tube 5 With the stopper assembly in place the weighted pick up should rest away from the rear of the tank and move freely inside the tank The top of the vent tube shoul...

Page 11: ...ll adjustable servo connector in the servo arm as same as picture below Adjustable Servo connector Servo arm Loctite secure 1 PCS Throttle servo arm Elevator servo arm Rudder servo arm 1 Install the r...

Page 12: ...shrod tube pre drill 1 Position the engine with the drive washer 150mm forward of the firewall as shown 7 Slide the throttle pushrod wire into the tube Position the engine between the mounts Use four...

Page 13: ...he throttle pushrod wire Make sure to use threadlock on the screw so it does not vibrate loose Battery Tie wrap COWLING Trim and cut 1 Slide the fiberglass cowl over the engine and line up the back ed...

Page 14: ...motor box to the firewall suitable with the cross lines drawn on the electric motor box and firewall Using epoxy and balsa stick to secure the motor box to the firewall Please see pictures below Epoxy...

Page 15: ...4mm blind nut four M4x15mm hex head bolts to secure the motor Please see picture shown M4 x 15mm Electric motor Epoxy 150mm 5 2mm 5 2mm Battery 4 Locate the plywood battery tray to the fuselage Tighte...

Page 16: ...The propeller should not touch any part of the spinner cone If it does use a sharp modeling knife and carefully trim away the spinner cone where the propeller comes in contact with it String Small we...

Page 17: ...the servo extension lead Pull the lead through the wing and remove the string 4 Apply 2 3 drops of thin C A to each of the mounting holes Allow the C A to cure without using accelerator 6 Secure the s...

Page 18: ...servo arm hole Bend at the mark AILERON PUSHROD HORN INSTALLATION 9 Set the aileron hatch in place and use a Phillips screw driver to install it with four wood screws Mark Pen 2 Make a 90 degree bend...

Page 19: ...nnect the linkage as shown and secure the control wire with a snap keeper 8mm Snap keeper M2 lock nut Metal clevis M2 lock nut Wing Flap Repeat the procedure for the aileron servo Cut INSTALLING LED L...

Page 20: ...in place with C A glue as shown 4 Install the LED and its harness to the wing and glue to hold the plastic to the wing in place as pictures shown 5 Use transparent plastic to cover the LED light with...

Page 21: ...INSTALLING RETRACTABLE LANDING GEAR Epoxy 1 SERVO GEAR INSTALLATION 1 Locate the items necessary to install the retracts landing gear and retract linkage instal lation Servo arm Loctile secure Adjusta...

Page 22: ...Cut the covering from the bottom of the wing for retracts landing gear installation 3 Glue hardwood mounting blocks into the wing as show with epoxy 4 Position the landing gear onto the landing gear...

Page 23: ...Install a wheel and two wheel collars on the main landing gear Secure the collars M3x25mm 8 3 Cut C A glue 7 Install the wheel wells after adjusting the retracts Roughen the bottom side of the well a...

Page 24: ...YAK 52 Instruction Manual 24 Close Position servo arm 12mm Open Position servo arm Wheel Fairing 2...

Page 25: ...he stabilizer onto the fuselage Align the centerline drawn on the top and the rear of the stabilizer with the centre of the fu selage When that is aligned hold the stabi lizer in that position using T...

Page 26: ...asure ments once more before the epoxy cures Hold the stabilizer in place with T pins or mask ing tape and remove any excess epoxy using a paper towel and rubbing alcohol 10 After the epoxy has fully...

Page 27: ...a triangle check to ensure that the vertical stabilizer is aligned 90 to the hori zontal stabilizer 4 When you are sure that everything is aligned correctly mix up a generous amount of Flash 30 Minut...

Page 28: ...Elevator control horn 4 Elevator and rudder pushrods assembly as pictures below 3 Thread one clevis and M2 lock nut on to each elevator control rod Thread the horns on until they are flush with the e...

Page 29: ...29 www seagullmodels com RUDDER PUSHROD HORN INSTALLATION 8mm 8mm M2 lock nut M2 clevis A Control horn M2 lock nut Metal clevis Elevator pushrod Rudder pushrod Pen 8mm Cut...

Page 30: ...and rudder pushrods assembly follow pictures below 1 Elevator control horn 1 2 2 Rudder control horn Elevator Throttle Rudder Elevator control horn Rudder control horn Elevator pushrod A C A glue Rud...

Page 31: ...arm to servos Notice the position of the servo arms on the servos See picture below MOUNTING THE TAIL WHEEL Locate items necessary to install tail gear M3x25mm M3x30mm M3x25mm M3x30mm 22mm Rudder Tail...

Page 32: ...secure until the glue fully cures 4 Position the canopy onto the fuselage Trace around the canopy and onto the fuselage using a felt tipped pen B B B C A glue C A glue Cut INSTALLTION PILOT AND CANOP...

Page 33: ...ere desired using the photos on the box and aid in their location 1 Plug the five servo leads and the switch lead into the receiver Plug the battery pack lead into the switch also 3 Route the antenna...

Page 34: ...ing Moving the balance aft makes the model more agile with a lighter and snappier feel In any case please start at the location we recommend If possible first attempt to balance the model by changing...

Page 35: ...t flip the servo re versing switch on your transmitter to change the direction E From behind the airplane look at the aileron on the right wing half Move the aileron stick to the right The right ailer...

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