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Seagull Models DHC-1 Chipmunk, Assembly Manual, Page: 21 / 34

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Seagull Models DHC-1 Chipmunk Assembly Manual Download Page 21

21

M4x20mm

 145mm 

 Epoxy.

 Balsa stick.

5) Attach the speed control to the side 

of the motor box using two-sided tape 

and tie wraps. Connect the appropriate 

leads from the speed control to the mo-

tor. Make sure the leads will not interfere 

with the operation of the motor.

Battery.

Summary of Contents for DHC-1 Chipmunk

Page 1: ...fications Wingspan 80 0 in 203 2 cm Wing area 937 8 sq ins 60 5 sq dm Weight 10 4 lbs 4 7 kg Length 57 2 in 145 2 cm Engine Motor size 20cc gasoline Radio 5 channels with 7 servos ASSEMBLY MANUAL Code SEA 304 ...

Page 2: ...ld a great flying aeroplane Please read this manual throughly before starting assembly of your DHC 1 CHIPMUNK Use the parts listing below to indentify all parts Please be aware that this aeroplane is not a toy and if assembled or used incorrectly it is ca pable of causing injury to people or property WHEN YOU FLY THIS AEROPLANE YOU ASSUME ALL RISK REPONSIBILITY If you are inexperienced with basic ...

Page 3: ...anoacrylate glue 30 minute epoxy 5 minute epoxy Hand or electric drill Assorted drill bits Modelling knife Straight edge ruler 2mm ball driver Phillips head screwdriver 220 grit sandpaper 90 square or builder s triangle Wire cutters Masking tape T pins Thread lock Paper towels 20cc gasoline engine Computer radio 5 with chanlel 7 servos Glow plug to suit engine Propeller to suit engine Protective f...

Page 4: ...de of the hinge line when the aileron is mounted to the aileron 3 Slide the wing panel on the aileron until there is only a slight gap The hinge is now centered on the wing panel and aileron Re move the T pins and snug the aileron against the wing panel A gap of 1 64 or less should be maintained between the wing panel and aileron NOTE The hinge is constructed of a spe cial material that allows the...

Page 5: ...h the other wing panel securely hinging the aileron in place 8 After both ailerons are securely hinged firmly grasp the wing panel and aileron to make sure the hinges are securely glued and cannot be pulled out Do this by carefully ap plying medium pressure trying to separate the aileron from the wing panel Use caution not to crush the wing structure Work the aileron up and down sev eral times to ...

Page 6: ...ng hole loca tions on the blocks 2 Use drill bit in a pin vise to drill the mouting holes in the blocks 4 Use dental floss to secure the connec tion so they cannot become unplugged 5 Secure the servo to the aileron hatch using Phillips screwdriver and the screws provided with the servo 6 Apply 1 2 drops of thin C A to each of the mounting tabs Allow the C A to cure without using accelerator 3 Appl...

Page 7: ... tape to attach it to the servo extension lead Pull the lead through the wing and remove the string 8 Set the aileron hatch in place and use a Phillips screw driver to install it with four wood screws AILERON PUSHROD INSTALLATION Please see below pictures 2x10mm C A glue ...

Page 8: ... lock nut INSTALLING THE FLAP SERVO Repeat the procedure for the flap servo INSTALLING THE FLAP PUSHROD Repeat the procedure for the aileron pushrod 40mm 80mm M3 clevis M3 lock nut INSTALLING LANDING GEAR 1 Locate items necessary to install Sprin Landing Gear ...

Page 9: ...9 Use a 6 to 12 volt battery ...

Page 10: ...DHC 1 CHIPMUNK Instruction Manual 10 ...

Page 11: ...11 ...

Page 12: ...DHC 1 CHIPMUNK Instruction Manual 12 ...

Page 13: ...servo Throttle servo INSTALLING THE FUSELAGE SERVOS Because the size of servos differ you may need to adjust the size of the precut opening in the mount The notch in the sides of the mount allow the servo lead to pass through 1 Install the rubber grommets and brass collets into all servos Test fit the servos into the fuselage servo mounts 3 32 Hole Elevator servo Switch INSTALLING THE ENGINE SWITC...

Page 14: ... to hold in place the fuel tank with C A glue to secure the fuel tank 3 Carefully bend the second nylon tube up at a 45º angle This tube is the vent tube Vent tube Fuel pick up tube Fuel fill tube 4 Test fit the stopper assembly into the tank It may be necessary to remove some of the flashing around the tank opening using a modeling knife If flashing is present make sure none falls into the tank 6...

Page 15: ... fiewall Tighten the screws Make sure to use threadlock on the screws to help prevent them from vibrating loose 8 Use balsa block to hold in place the fuel tank with C A glue to secure the fuel tank inside the fuselage 9 Connect the lines from the tank to the engine and muffl Th vent line will con nectto the muffl and the line from the clunk tothe carburetor Fuel pick up tube Fuel fill tube Ven tu...

Page 16: ...he tube to the fiewall and the fuel tank mount 6 Connect the Z bend in the 450mm throttle pushrod to the outer hole of the carburetor arm 7 Slide the throttle pushrod wire into the tube Position the engine between thmounts Use four M4x30mm machine screws to secure the engine to the mount as shown MOUNTING THE ENGINE 1 Position the engine with the drive washer 145mm forward of the fiewall as shown ...

Page 17: ...and install the servo horn perpendiular to the servo center line 9 Move the throttle stick to the closed po sition and move the carburetor to closed 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 Pushrod wire ...

Page 18: ...tion Manual 18 COWLING 1 Tape the cowl to the fuselage using low tack tape 2 Use a drill and drill bit to drill the holes for the cowl mounting screws Make sure the cowl position is correct before drill ing each hole M3x10mm ...

Page 19: ...wire and install it into the end of the needle valve Secure the wire in place by tightening the set screw in the side of the needle valve ELECTRIC POWER CONVERSION 1 Locate the items neccessary to install the electric power conversion included with your model 2 Recommend the items necessary to in stall the electric power conversion parts included with your model ...

Page 20: ...ease see pictures below 4 Attach the motor to the front of the electric motor box using four 4mm blind nut four M4x20mm hex head bolts to se cure the motor Please see picture shown M4x25mm and washers Then use 5 5mm drill bit to enlarge the holes on the electric motor box Blind nut You follow the same pattern on page 18 to drill hole mounted motor Motor 110 2000 Watts Propeller 17x8 19x10 ESC 85A ...

Page 21: ...5 Attach the speed control to the side of the motor box using two sided tape and tie wraps Connect the appropriate leads from the speed control to the mo tor Make sure the leads will not interfere with the operation of the motor Battery ...

Page 22: ...uler and a pen locate the cen terline of the horizontal stabilizer at the trailing edge and place a mark Use a tri angle and extend this mark from back to front across the top of the stabilizer Also extend this mark down the back of the trailing edge of the stabilizer 2 Using a modeling knife carefully re move the covering at mounting slot of horizontal stabilizer both side of fuse lage Cut 3 Slid...

Page 23: ...covering itself Cutting into the balsa structure may weaken it 6 Using a modeling knife carefully re move the covering that overlaps the stabiliz er mounting platform sides in the fuselage Remove the covering from both the top and the bottom of the platform sides Trim and Cut 7 When you are sure that everything is aligned correctly mix up a generous amount of 30 Minute Epoxy Apply a thin layer to ...

Page 24: ...he vertical stabilizer firmly in place use a pen and draw a line on each side of the vertical stabilizer where it meets the top of the fuselage 90º Vertical Stabilizer Horizontal Stabilizer FillE poxy 2 Slide the vertical stabilizer back in place Using a triangle check to ensure that the ver tical stabilizer is aligned 90º to the horizontal stabilizer ...

Page 25: ...he bot tom and top edges of the filler block and to the lower hinge also Set the stabilizer in place and realign Double check all of your measurements once more before the epoxy cures Hold the stabilizer in place with T pins or masking tape and remove any excess epoxy using a paper towel and rubbing alcohol Allow the epoxy to fully cure before proceeding MOUNTING THE TAIL WHEEL Locate items necess...

Page 26: ...DHC 1 CHIPMUNK Instruction Manual 26 HINGING THE RUDDER Glue the top two rudder hinges in place using the same techniques used to hinge the ailerons INSTALL RUDDER CONTROL HORN Epoxy ...

Page 27: ...or Elevator control horn Control horn Metal clevis Elevator pushrod Elevator control horn 3 Thread one clevis and M2 lock nut on to each elevator control rod Thread the horns on until they are flush with the ends of the control rods 4 Elevator and rudder pushrods assem bly as pictures below ELEVATOR PUSHROD HORN INSTALLATION Epoxy Elevator pushrod M2 lock nut ...

Page 28: ... horn Metal clevis M2 lock nut Wire keeper Elevator pushrod 1 Locate items necessary to install pilot and canopy 2 A scale pilot is included with this ARF The Pilot included fitting well to the cock pit or you can order others scale pilot figures made by SG Models They are available at SG Models distributors ...

Page 29: ... the cover ing Use epoxy to glue this into the base of the pilot figure and glue the cockpit panel in place with C A glue please see pictures as shown 1 Plug the servos leads and the switch lead into the receiver Plug the battery pack lead into the switch also 2 Wrap the receiver and battery pack in the protective foam rubber to protect them from vibration Epoxy 3 Route the antenna in the antenna ...

Page 30: ...DHC 1 CHIPMUNK Instruction Manual 30 Insert two wing panels as pictures below 4x20mm Wing tube ...

Page 31: ...nd carefully lift the plane This is the point at which your model should balance for your first flights Later you may wish to experiment by shifting the balance up to 10mm forward or back to change the flying char acteristics Moving the balance forward may improve the smoothness and ar row like tracking but it may then require more speed for take off and make it more difficult to slow down for lan...

Page 32: ... High Rate Up 20 mm Down 20 mm Low Rate Up 15 mm Down 15 mm Elevator High Rate Up 15 mm Down 15 mm Low Rate Up 12 mm Down 12 mm Rudder High Rate Right 30 mm Left 30 mm Low Rate Right 20 mm Left 20 mm Flap Mid 35mm Full 25mm 130mm 12 15mm 15 20mm 15 20mm 12 15mm ...

Page 33: ...The right ailer on should move up and the other aileron should move down If it does not flip the servo reversing switch on your transmit ter to change the direction 1 Completely charge your transmit ter and receiver batteries before your first day of flying 2 Check every bolt and every glue joint in the DHC 1 CHIPMUNK to ensure that everything is tight and well bonded 3 Double check the balance of...

Page 34: ...s Factory 12 101A Hamlet 4 Le Van Khuong Street Dong Thanh Ward Hoc Mon District Ho Chi Minh City Viet Nam Office 62 8 Ngo Tat To Street Ward 19 Binh Thanh District Ho Chi Minh City Viet Nam Phone 848 86622289 or 848 36018777 Website www SeagullModels com Email Sales seagullmodels com Facebook www facebook com SeaGullModels ...

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