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11

BALANCING

1. It is critical that your airplane be balanced 

correctly. Improper balance will cause your 
plane to lose control and crash.

   THE CENTER OF GRAVITY IS LOCATED 55mm 

BACK FROM THE LEADING EDGE OF THE 
WING, AT THE FUSELAGE.

2.  Mount the wing to the fuselage. Using a couple 

of pieces of masking tape, place them on the 
top side of the wing 55mm back from the 
leading edge, at the fuselage sides.

3. Turn the airplane upside down. Place your 

fingers on the masking tape and carefully lift 
the plane.

4.  If the nose of the plane falls, the plane is heavy 

nose. To correct this first move the battery pack 
further back in the fuselage. If this is not 
possible or does not correct it, stick small 
amounts of lead weight on the fuselage under 
the horizontal stabilizer. If the tail of the plane 
falls, the plane is tail heavy. To correct this, 
move the battery and receiver forward or if this 
is not possible, stick weight into the firewall. 
When balanced correctly, the airplane should 
sit level or slightly nose down when you lift it up 
with your fingers. 

55mm

 Ailerons : 12mm up 

12mm down

 Elevator : 12mm up 

12mm down

 Rudder  : 15mm right  15mm left

Elevator Control

Aileron Control

12mm 

12mm 

Rudder Control

15mm 

15mm 

12mm 

12mm 

LATERAL BALANCE

       

After you have balanced a plane on the C.G. 

You should laterally balance it. Doing this will 
help the airplane track straighter.

1. Turn the airplane upside down. Attach one loop 

of heavy string to the engine crankshaft and 
one to the tail wheel wire. With the wings level, 
carefully lift the airplane by the string. This may 
require two people to make it easier.

2.  If one side of the wing fall, that side is heavier 

than the opposite. Add small amounts of lead 
weight to the bottom side of the lighter wing 
half's wing tip. Follow this procedure until the 
wing stays level when you lift the airplane.

CONTROL THROWS

1.  We highly recommend setting up a plane using 

the control throws listed.

2.   The control throws should be measured at the 

widest point of each control surface.

3.  Check to be sure the control surfaces move in 

the correct directions.

!

53

Screw

54

INSTALLING THE WING STRUT

1. Screw the wing strut into the fuselage.

52

Screw

2.  Screw the wing strut into the wing

3.  Finishing.

Summary of Contents for decathlon - EP

Page 1: ...i scale model aircraft for electric motor Displaying smooth and stable flight characteristics The Decathlon EP offers electric power s convenience together with exciting semi scale looks Most parts ar...

Page 2: ...6m flat washer 4 3mm x 12mm screw 4 3m flat washer TAIL GEAR ASSEMBLY 1 Tail gear 1 25mm diameter wheel 1 Wood collar 1 2mm collar 2 2mm x 12mm wood screw 4 Wood clasp ELEVATOR CONTROL SYSTEM 1 Contr...

Page 3: ...chemicals come in contact with the colors on the covering and the plastic parts SAFETY PRECAUTION This is not a toy Be sure that no other flyers are using your radio frequency Do not smoke near fuel...

Page 4: ...r mounting screws Secure the servo tray in place using the mounting screws provided 2mm x 12mm 6 Repeat step 2 5 to install the second aileron servo in the opposite wing half 7 Using masking tape tape...

Page 5: ...of the arms Using a 2mm drill bit enlarge the third hole out from the center of the arm to accommodate the aileron pushrod wire 3 Plug the aileron servo into the receiver and center the servo Install...

Page 6: ...he horizontal stabilizer 16 6 When you are sure that everything is aligned correctly mix up a generous amount of 30 minute epoxy Apply a thin layer to the top and bottom of the stabilizer mounting are...

Page 7: ...al stabilizer make sure you only press hard enough to cut the film not the balsa vertical stabilizer 19 Glue with epoxy 20 Remove the covering 21 Remove the covering 22 4 Slide the vertical stabilizer...

Page 8: ...G GEAR 1 Four nuts have been installed at the factory 2 Install main landing gear into the fuselage using 4 4mm x 20mm machine screws and 16mm flat washers provided in the kit 7 Screws Glue with epoxy...

Page 9: ...tray if necessary to fit your servos 2 Mount the servos to the tray using the mounting screws provided with your radio system INSTALLING THE ELEVATOR linkages Repeat step 1 4 from installing the ailer...

Page 10: ...9 39 36 40 Metal pushrod 41 37 38 43 42 1 Prepare the engine mount and glue it 2 Glue the engine mount into the fuselage INSTALLING THE ENGINE and cowling...

Page 11: ...the canopy 50 Glue with epoxy 45 44 46 47 48 Battery ESC Receiver 4 The cowling 3 Install the motor and secure it 5 Secure the cowling 6 Install the propeller INSTALLING THE battery and receiver Insta...

Page 12: ...down when you lift it up with your fingers 55mm Ailerons 12mm up 12mm down Elevator 12mm up 12mm down Rudder 15mm right 15mm left Elevator Control Aileron Control 12mm 12mm Rudder Control 15mm 15mm 1...

Page 13: ...day of flying 2 Check every bolt and every glue joint in your plane to ensure that everything is tight and well bonded 3 Double check the balance of the airplane 4 Check the control surface 5 Check th...

Page 14: ...ion factor 1 64 4 mm 3 16 4 8 mm 1 25 4 mm 21 533 4 mm 1 32 8 mm 1 4 6 4 mm 2 50 8 mm 24 609 6 mm 1 16 1 6 mm 3 8 9 5 mm 3 76 2 mm 30 762 0 mm 3 32 2 4 mm 1 2 12 7 mm 6 152 4 mm 36 914 4 mm 1 8 3 2 mm...

Page 15: ...at the slowest possible speed Switch on the transmitter Switch off the transmitter Check that the transmitter batteries have adequate power Switch off the receiver Switch on the receiver ALWAYS take...

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