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www.seagullmodels.com

Specifications:

Wing span -------------------------76.8in (195.0cm)
Wing area --------------806.0sq.in (52.0sq dm)
Weight -----------------------------9.9-11.0lbs(4.5-5.0kg)
Length ---------------------------57.1in (145.0cm)
Engine  -------------0.36 - 0.46 cu.in -----2-stroke.
                                0.52 - 0.72cu.in -----4-stroke.
Radio ----------------- 6 channels with 10 servos.
Electric conversion :optional..

ASSEMBLY MANUAL

MS:146

“Graphics and specifications may change without notice”.

“Cessna, 337 Skymaster, emblems, logos, and body designs
are trademarks of Textron Innovations Inc. and are used
under license by Seagull Models Manufacturing and Trading
Company LTD.

68-6412-32462

Summary of Contents for 337 Skymaster

Page 1: ...in 2 stroke 0 52 0 72cu in 4 stroke Radio 6channelswith10servos Electricconversion optional ASSEMBLY MANUAL MS 146 Graphics and specifications may change without notice Cessna 337 Skymaster emblems l...

Page 2: ...joy This instruction manual is designed to help you build a great flying aeroplane Please read this manual thoroughly before starting assembly of your CESSNA 337 SKYMASTER Use the parts listing below...

Page 3: ...hinges are not glued in place It is imperative that you properly adhere the hinges in place per the steps that follow using a high quality thin C A glue Note 1 Carefully remove the flap from one of th...

Page 4: ...s constructed of a special material that allows the C A to wick or penetrate and distribute throughout the hinge securely bonding it to the wood structure of the wing panel and flap hinges are glued i...

Page 5: ...Note 3 Slide the aileron on the wing panel until there is only a slight gap The hinge is now centered on the wing panel and aileron Remove the T pins and snug the aileron against the wing panel A gap...

Page 6: ...ng the same techniques used to hinge the ailerons HINGING THE RUDDER Glue the rudder hinges in place using the same techniques used to hinge the ailerons Hinge 8 After both ailerons are securely hinge...

Page 7: ...p control horn Install the elevator control horn using the same method as same as the aileron control horns INSTALL ELEVATOR CONTROL HORN Epoxy Epoxy Elevator control horn Repeat steps to install the...

Page 8: ...eaving 1 2 protruding from the rear of the stopper This will be the fuel pick up tube INSTALLING THE STOPPER ASSEMBLY 2 Using a modeling knife cut one length of silicon fuel line Connect one end of th...

Page 9: ...topper assembly tighten the 3 x 20mm machine screw until the rubber stopper ex pands and seals the tank opening Do not overtighten the assembly as this could cause the tank to split Fuel tank 8 Use pl...

Page 10: ...h tube is the vent and which is the fuel pickup when you attach fuel tubing to the tubes in the stopper Once the tank is installed inside the fuselage it may be difficult to determine which is which 7...

Page 11: ...rvo into the aileron servo mount 2 Secure the servos with the screws pro vided with your radio system Because the size of servos differ you may need to adjust the size of the precut open ing in the mo...

Page 12: ...ing screw 105mm MOUNTING THE ENGINE BEFORE 1 Position the engine with the drive washer 110mm forward of the firewall as shown Trim and cut Switch rudder servo arm Rudder servo arm Elevator servo arm I...

Page 13: ...mount rails 4 On the fire wall has the location for the throttle pusshrod tube pre drill M3x15mm 2mm Pushrod wire Machine screw M3x15mm Trim and cut 7 Slide the throttle pushrod wire into the tube Po...

Page 14: ...k mount Use medium C A to glue the tube to the firewall and the fuel tank mount 6 Connect the Z bend in the 450mm throttle pushrod to the outer hole of the carburetor arm Pushrod tube hole 3 Use a dri...

Page 15: ...d Use a 2 5mm hex wrench to tighten the screw that secures the throttle pushrod wire Make sure to use threadlock on the screw so it does not vibrate loose LANDING GEAR INSTALLATION A NOSE GEAR 1 Locat...

Page 16: ...CESSNA 337 SKYMASTER Instruction Manual 16 Adjustable connector M2 clevis Screw 2 Install landing gear at the top Fuselage 1 3 2 5...

Page 17: ...at the top Cowling 1 Slide the fiberglass cowl over the en gine and line up the back edge of the cowl with the marks you made on the fuselage then trim and cut as shown COWLING BEFORE Trim and cut Tr...

Page 18: ...of masking tape Needle valve Because of the size of the cowl it may be nec essary to use a needle valve extension for the high speed needle valve Make this out of suf ficient length 1 5mm wire and ins...

Page 19: ...sking tape 4 Install the muffler and muffler extension onto the engine and make the cutout in the cowl for muffler clearance Connect the fuel and pressure lines to the carburetor muffler and fuel fill...

Page 20: ...CESSNA 337 SKYMASTER Instruction Manual 20 4mm M4x60mm M4x60mm Blind nut...

Page 21: ...C POWER CONVERSION Recommendation EP parts as shown not included with your model Model size 35 45 size models Motor 35mm 830 rev per volt Propeller 10x7 ESC 50A Lipo Batteries 4 cell 3200mA M3x15mm 4m...

Page 22: ...CESSNA 337 SKYMASTER Instruction Manual 22 Battery M4x60mm M3x15mm...

Page 23: ...with it INSTALLING THE SPINNER BEFORE Install the spinner backplate propeller and spinner cone INSTALLING THE SPINNER AFTER Install the spinner backplate propeller and spinner cone The propeller shoul...

Page 24: ...e wing root Remove the string from the wing at the servo location and use the tape to attach it to the servo extension lead Pull the lead through the wing and remove the string 3 Use drill bit in a pi...

Page 25: ...l weight 9 Set the aileron hatch in place and use a Phillips screw driver to install it with four wood screws Small weight String Electric wire AILERON PUSHROD HORN INSTALLATION M2 lock nut M2 clevis...

Page 26: ...the aileron servo FLAG PUSHROD HORN INSTALLATION Wing Flag M2 lock WHEEL AND WHEEL PANTS 1 Assemble and mounting the landing gear wheels to the wheel pants as shown in the following pictures 2 Follow...

Page 27: ...nd nuts for securing the landing gear are already mounted inside the fuselage 2 Using the hardware provided mount the main landing gear to the fuselage INSTALLING THE MAIN LANDING GEAR INSTALLING THE...

Page 28: ...ife carefully remove the covering at mounting slot of horizontal sta bilizer both side of fuselage Remove covering 3 Put the stabilizer into place in the po sition of the fuselage 5 When you are satis...

Page 29: ...ly cut through the covering itself Cutting into the balsa structure may weaken it 9 When you are sure that everything is aligned correctly mix up a generous amount of 30 Minute Epoxy Apply a thin laye...

Page 30: ...using the same method as with the aileron control horns 2 Position the elevator control horn on the both side of elevator C A glue Control horn M2 lock nut Metal clevis Elevator pushrod M2 lock nut M2...

Page 31: ...31 www seagullmodels com Cut Rudder Control horn C A glue C A glue Rudder pushrod M2 lock nut Metal clevis Rudder Control horn M2 lock nut Metal clevis Rudder pushrod Control horn Rudder pushrod...

Page 32: ...CESSNA 337 SKYMASTER Instruction Manual 32 Screw Rudder pushrod Elevator pushrod Cut Epoxy M2x6mm INSTALLATION THE STRUTS Wing Wing...

Page 33: ...others scale pilot figures made by Seagull factory They are available at Seagull distributors If you are going to install a pilot figure please use a sanding bar to sand the base of the figure so that...

Page 34: ...e photos on the box and aid in their location 2 If all the decals are not precut please use scissors or a sharp hobby knife to cut the decals from the sheet Please be certain the model is clean and fr...

Page 35: ...35 www seagullmodels com Antenna 2 5mm M3x25mm...

Page 36: ...balance up to 10mm forward or back to change the flying characteristics Moving the balance forward may improve the smoothness and arrow like tracking but it may then require more speed for take off an...

Page 37: ...37 www seagullmodels com CONTROL THROWS Ailerons 10mm 12mm up 10mm 12mm down Elevator 10mm 12mm up 10mm 12mm down Rudder 20mm 25mm left 20 mm 25mm right 80mm...

Page 38: ...direction of the elevator rudder ailerons and throttle FLIGHT PREPARATION A Plug in your radio system per the manufacturer s instructions and turn every thing on 3 Double check the balance of the air...

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