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PITTS

        

                  

Item code: BH85-A

                                

Instruction Manual

3

This model is highly pre-fabricated and can be built in 

a very short time. However, the work which you have to 

carry out is important and must be done carefully. The 

model will only be strong and fly well if you complete 

your  tasks  competently  -  so  please  work  slowly  and 

accurately.

When self-tapping screws have to be screwed into 

wood,  apply  a  little  white  glue  to  prevent  them 

shaking loose: just squirt white glue into the hole 

and fit the screw.

Caution:

 

This model is not a toy! 

If you are a beginner to this type of powered model, 

please  ask  an  experienced  model  flyer  for  help  and 

support. If you attempt to operate the model without 

knowing  what  you  are  doing  you  could  easily  injure 

yourself  or  somebody  else.  Please  keep  your  safety 

and well-being in mind at all times.

Important:

 Before you start construction

Even if you have built a large number of RC models 

please read right through these instructions and check 

all the kit components against the parts list. We have 

taken great trouble to keep construction as simple as 

possible, without making any compromises in the area 

of safety.

Note regarding the film covering

Minor  creases  or  bubbles  may  develop  in  the  film 

covering due to major fluctuations in weather conditions 

(temperature,  humidity  etc.);  in  rare  cases  you  may 

even find a slight warp in a component. These minor 

faults are in the nature of film-covered built-up wooden 

structures, and can easily be corrected using a heat 

gun, as commonly used for modelling.

Creases:

      Blow warm air over the area and rub             

                     down with a soft cloth.

Wing wrap: 

Hold the panel twisted gently in

                             the opposite direction to the wrap,and  

                           apply warm air to remove the creases  

                    from the covering.

Caution! 

do not heat the film more than is absolutely 

necessary. If the air or the iron is too hot, the film may 

melt and holes may be formed.

+   This is not a toy.

+    Be  sure  that  no  other  flyers  are  using  your  radio 

frequency.

 +  Do not smoke near fuel.

 +  Store fuel in a cool, dry place, away from children 

and pets.

 +  Wear safety glasses. 

 +The glow plug clip must be securely attached to the 

glow plug.

 + Do not flip the propeller with your fingers. 

 +  Keep loose clothing and wires away from the propel-

ler. 

 +  Do not start the engine if people are near. Do not 

stand in line with the side of the propeller. 

 + Make engine adjustments from behind the propeller 

only. Do not reach around the spinning propeller.

SAFETY PRECAUTION

 REPLACEMENT LARGE PARTS

A:  Cowling.

B:   Wing panel (B1, B2, B3, B4).

C:   Fuselage - Vertical stab set.

D:   Horizontal stabilizer.

E:   Rudder.

F.    Aluminium wing dihedral brace.

G:   Decal sheet.

K:    Pilot.

B1

B2

B3

B4

A

G

F

D

C

K

E

Summary of Contents for Pitts BH85-A

Page 1: ...r type Aluminium Hi grade for main gear and spring wire for tail gear included Parts listing required not included Radio 06 channels SPECIFICATION PITTS Servo 07 servos Servo mount 42mm x 21mm Engine...

Page 2: ...bilizer with pre installed rud der 1 Horizontal stabilizer with pre installed elevator halves To avoid scratching your new airplane do not unwrap the pieces until they are needed for assembly Cover yo...

Page 3: ...e film covering due to major fluctuations in weather conditions temperature humidity etc in rare cases you may even find a slight warp in a component These minor faults are in the nature of film cover...

Page 4: ...C A to center of hinge on both sides Temporary pin to keep hinge centered 1 INSTALLING THE AILERONS I AILERON Test fit the ailerons to the wing with the hinges If the hinges don t remain centered stic...

Page 5: ...ock of wood for each of the four mount ing screws provided with the servo Electric wire Drill a hole 1 5mm 2x10mm Secure 5 Repeat the procedure to install the aileron servos in the other wing half 3 I...

Page 6: ...out 6mm beyond the blend Flaslink Pushrod wire Control horn Repeat the procedure to install the opposite wing half See pictures below See pictures below II INSTALLING THE ENGINE MOUNT OPTION 1 ELECTRI...

Page 7: ...nk and move freely inside the tank Connect one end of the line to the weighted clunk and the other end to the nylon pick up tube in the stopper 3 Carefully bend the second nylon tube up at a 45 degree...

Page 8: ...silicon sealer to the forward area of the tank where it exits the fuselage behind the engine mounting box and to the rear of the tank at the forward bulkhead Do not secure the tank into place permanen...

Page 9: ...he fuselage by taking measurements but don t glue anything yet B B A A 3 Slide the cowl back over the engine and secure it in place using four wood screws See picture below 4 Install the muffler and m...

Page 10: ...n cutting through the covering to remove it cut with only enough pressure to only cut through the covering it s self Cutting into the balsa structure may weaken it This could lead to possible failure...

Page 11: ...o system Bottom side M2 Lock nut M2 Elevator pushrod Bottom side Elevator pushrod Bend 90 degree Top side C A glue Bottom side C A glue Elevator servo Secure Cut Flaslink Pushrod wire servo arm Secure...

Page 12: ...install as same as the way of elevator pushrod Please see pictures below Rudder servo install as same as method of elevator servo Rudder control horn install as same as method of elevator control hor...

Page 13: ...the rudder hinge line and the tail wheel bracket should be centered on the plywood plate VIII MOUNTING THE TAIL WHEEL BRACKET Aluminium landing gear Collar M5 nut Flat washer 3 x 12mm 2 Mark the loca...

Page 14: ...the model 4 Using a 2mm drill bit drill a hole through the side of the fuselage near the receiver for the antenna to exit X INSTALLING THE RECEIVER AND BATTERY Locate the aluminium wing dihedral brace...

Page 15: ...is aligned with the rear edge of the cockpit opening Use canopy glue to secure the canopy to the canopy hatch Use low tack tape to hold the canopy in position until the glue fully cures Wrap the tape...

Page 16: ...SPINNER BALANCING 1 It is critical that your airplane be balanced cor rectly Improper balance will cause your plane to lose control and crash THE CENTER OF GRAVITY IS LOCATED 106MM BACK FROM THE LEADI...

Page 17: ...the airplane upside down Place your fingers on the masking tape and carefully lift the plane Accurately mark the balance point on the top of the wing on both sides of the fuselage The balance point is...

Page 18: ...to an explosion Keep all onlookers especially small children and animals well back from the area of operation This is a flying aircraft which will cause serious injury in case of impact with a person...

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