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Instruction Manual Book

BUCKER BU 131 JUNGMANN

Item code: BH160.

95% ALMOST READY TO FLY

Made in Vietnam.

-  Wingspan: 1,850 mm (72.83 in).

-  Length: 1,660 mm ( 65.35 in).

-  Weight: 6kg (13.20 lbs).

2

-  Wing area: 89.4 dm .

2

-  Wing loading: 67.1 g/dm .

-  Wing type: Naca Airfoil.

-  Servo mount: 42mm x 21mm.

-  Gear type: Aluminium Hi-grade for main gear 

   and spring wire for tail gear 

(included).

SPECIFICATION:

Parts listing required (not included):

-  Radio: 06 channels.
-  Servo: 08 servos.
-  Engine: 120 - 2 stroke; 20 - 30 cc Gas.
-  Motor: Brushless outrunner 1800-2300W, 450KV. 
-  Propeller: Suit with your engine.

Recommended motor 
and battery set up 

(not included)

:

-  Motor:  RIMFIRE.120.
-  Lipo cell: 6 cells 4,000-5,000mAh.
-  ESC: 80A.
-  Receiver battery: 6V/ 1200-2000mAh NiMH.

ALL BALSA - PLY WOOD CONSTRUCTION.
           COVERED WITH ORACOVER

Glow and EP

Summary of Contents for BH160

Page 1: ...Aluminium Hi grade for main gear and spring wire for tail gear included SPECIFICATION Parts listing required not included Radio 06 channels Servo 08 servos Engine 120 2 stroke 20 30 cc Gas Motor Brush...

Page 2: ...se chemicals come in contact with the colors on the covering and the plastic parts Caution This model is not a toy If you are a beginner to this type of powered model please ask an experienced model f...

Page 3: ...crew cement Phillips head screwdriver Hand or electric drill cm 1 2 3 4 5 6 7 8 9 10 Straight edge ruler Some more tools 2mm ball driver 90 square or builder s triangle Masking tape T pins Paper towel...

Page 4: ...ding gear Wheels Plywood of landing gear Aluminium of wing struts Fuel Tank 14 a Clunk 14 b Stopper three line Tail gear set Plastic engine mount Wood motor mount 11 10 12 13 14 15 16 17 4mm Washer 8...

Page 5: ...o arm exit hole on the aileron servo tray hatch This hole will allow the servo arm to pass through when installing the aileron pushrods 3 Place the servo into the servo tray Center the servo within th...

Page 6: ...the outer hole in the servo arm Install a silicone tube on the clevis Using pliers carefully make a 90 degree bend down at the mark made Cut off the excess wire leaving about 6mm beyond the blend Ben...

Page 7: ...ank the top of the vent tube should rest just below the top surface of the tank It should not touch the top of the tank To carburetor fuel inlet see front view of fuel tank Insert and tighten the scre...

Page 8: ...he lines to ensure the fuel lines have not become kinked inside the fuel tank compartment Air should flow through easily 9 To secure the fuel tank in place apply a bead of silicon sealer to the forwar...

Page 9: ...drill bit enlarge the four holes in the cowling Cowl area cutout for muf er Install one adjustable metal connector through the third hole out from the center of one servo arm enlarge the hole in the...

Page 10: ...r of the fuselage Make sure that you do not remove any wood from the slots as this will affect the alignment of the tail 1 Elevator install as same as the way of aileron 3 Draw a center line onto the...

Page 11: ...ou only cut with enough pressure to only cut through the film and not the wood Cutting into the balsa structure may weaken it This could lead to possible failure during flight When you are sure that e...

Page 12: ...m retaining screw Rudder install as same as the way of aileron 9 RUDDER INSTALLATION ELEVATOR CONTROL HORN INSTALLATION PUSHROD Elevator control horn install as same as the way of aileron control horn...

Page 13: ...k Pushrod wire servo arm Rudder pushrod Snap keeper Rudder servo 1 Set the tail wheel assembly in place on the plywood plate The pivot point of the tail wheel wire should be even with the rudder hinge...

Page 14: ...em code BH160 Secure 3x12mm 11 INSTALLING THE MAIN WING Secure 4 x 6mm a b c Secure 4 x 6mm Secure 4 x 6mm Secure 4 x12mm Secure 4 x12mm 4mm Spring Washer 4 x 6mm Button Screw 4 8 4 x 12mm Cap Screw 8...

Page 15: ...into the switch 4 Wrap the receiver and battery pack in the protective foam to protect them from vibration Use a rubber band or masking tape to hold the foam in place 5 Position the battery pack and...

Page 16: ...m tube dihedral brace into each wing haft The brace should slide in easily If not use 220 grit sand around the edges and ends of the brace until it fits properly Attach the aluminium tube into the fus...

Page 17: ...ristics Moving the balance CG 103 mm BUCKER BU 131 JUNGMANN Item code BH160 forward may improve the smoothness and arrow like tracking but it may then require more speed for take off and make it more...

Page 18: ...he receiver antenna It should be fully extended and not coiled up inside the fuselage 6 Properly balance the propeller We wish you many safe and enjoyable flights with your BUCKER BU 131 JUNGMANN 1 We...

Page 19: ...t up areas DO NOT dispose of empty fuel containers on a fire this can lead to an explosion NEVER fly in wet conditions or on windy or stormy days NEVER use damaged or deformed propellers or spinners T...

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