Black Horse Model B-25J Mitchell Owner's manual

SPECIFICATION
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 Wingspan : 1,590mm 62.60 in.
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 Length : 1,230 mm 48.43 in.
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 Weight : 2.8 kg 6.16 Lbs.
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 Radio : 06-7 channels.
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 Servo : 08-10 servos.
Parts listing required :
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 Electric Motor : ( 02pcs ) + AXI 2814/12.
+ KMS 2814/08
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 Battery: 3 CELLS-LI-POLY
11.1V-4,500 mA.h-20c.
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 Speed control : ( 02pcs ) : 40 A
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 Engine (02PCS) : 25 -2 stroke.
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 Propeller : 9 x 6
Instruction Manual book
Made in Vietnam.
ITEMCODE:BH51.

B-25J MITCHELL . Instruction Manual
2
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manual thoroughly before starting assembly of your B-25J MITCHELL. Use the parts listing below
to identify all parts.
WARNING.
Please be aware that this aeroplane is not a toy and if assembled or used incorrectly it is
capable of causing injury to people or property. WHEN YOU FLY THIS AEROPLANE YOU
ASSUME ALL RISK & RESPONSIBILITY.
If you are inexperienced with basic R/C flight we strongly recommend you contact your R/C supplier
and join your local R/C Model Flying Club. R/C Model Flying Clubs offer a variety of training
procedures designed to help the new pilot on his way to successful R/C flight. They will also be able
to advise on any insurance and safety regulations that may apply.
TOOLS & SUPPLIES NEEDED.
Thick cyanoacrylate 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.
Some more parts.
HARDWAREPACK
COWLING.
Landing gear.....
To avoid scratching your new airplane, do not
unwrap the pieces until they are needed for
assembly. Cover your workbench with an old
towel or brown paper, both to protect the air-
craft and to protect the table. Keep a couple of
jars or bowls handy to hold the small parts af-
ter you open the bag.
Please trial fit all the parts. Make sure you have
the correct parts and that they fit and are
aligned properly before gluing! This will assure
proper assembly. B-25J MITCHELL ARF is
hand made from natural materials, every plane
is unique and minor adjustments may have to
be made. However, you should find the fit su-
perior and assembly simple.
The painted and plastic parts used in this kit
are fuel proof. However, they are not tolerant
of many harsh chemicals including the follow-
ing: paint thinner, C/A glue accelerator, C/A glue
debonder and acetone. Do not let these chemi-
cals come in contact with the colors on the
covering and the plastic parts.
PARTS LISTING.
FUSELAGE ASSEMBLY
(1) Fuselage.
WING ASSEMBLY
(1) Right wing half with pre-installed
aileron.
(1) Left wing half with pre-installed
aileron.
Tail section assembly
(1) Vertical stabilizer with pre-
installed rudder.
(1) Horizontal stabilizer with pre-
installed elevator halves.
SUGGESTION.
NOTE.

B-25J MITCHELL. INSTRUCTION MANUAL
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+ This is not a toy
+ Be sure that no other flyers are using your
radio frequency.
+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 propeller.
+ Do not st art the motor if people are near .
Do not stand in line with the side of the propel-
ler.
SAFETY PRECAUTION.
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 already 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 warp: Hold the panel twisted
gently in the opposite
direction to the warp, 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 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.
REPLACEMENT LARGE PARTS
REPLACEMENT SMALL PARTS
A. Wing panel.
B. Fuselage.
C. Horizontal stabilizer.
D. Vertical stabilizer.
1. Cowling.
3.Guns & Radiator.
2.Gun turret.
4. Retractable landing gear and retractable
nose gear.
5. Wheels.
E. Decal sheet.
6. Radiator.
7. Top fuselage hatch.
1
1
2
32
4
6
7
F. Aluminium wing dihedral brace.
A
A
B
C
DE
F
5
8.Font Greenhouse Canopy .
8
9
9.Main Cockpit canopy .

B-25J MITCHELL . Instruction Manual
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 1) Install the rubber grommets and brass
eyelets onto the aileron servo.
 2) Install the metal connector onto servo
arm.
INSTALLING THEAILERON - FLAP SERVO
CONTROLHORN.
INSTALLING THE AILERON - SERVO CONTROL HORN.
C/A glue.
C/A glue.
Bottom side of left wing.
Flap Flap Aileron
Epoxy gue
C/A glue.
C/A glue.

B-25J MITCHELL. INSTRUCTION MANUAL
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Epoxy glue.
C/A glue
Bottom side of leftwing.
 3) Install the aileron servo as same as
picture.
Remove covering
Thread
Electric wire
Thread

B-25J MITCHELL . Instruction Manual
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 4) Attach the micro control connector to
the servo arms. Be sure to use the lock tie but
it could free rotation.
Micro control
connector.
CONTROL HORN OF THE AILERON
Bottom side.
Aileron
Flap
Insert aileron control horn to the aileron.
Remove the covering to pre-cut slot of aileron
as picture below.
58mm
Pushrod wire
aileron control horn. Flap control horn.
aileron control horn.
C/A glue
C/A glue

B-25J MITCHELL. INSTRUCTION MANUAL
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Aileron
control horn
Secure
Aileron
Secure
Remove the covering to pre-cut slot of flap as
picture below.
INSTALLINGFLAPSERVO-CONTROLHORN.
Remove covering
Flap
Bottom side
Installing the flap servo as picture below.

B-25J MITCHELL . Instruction Manual
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CONTROL HORN OF THE FLAP
Flap control horn
Pushrod wire
Insert flap control horn to the flap as picture
below.
C/A glue
Secure
Cut

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Repeat the procedure for the other
wing half.
See pictures below
THERE ARE TWO OPTIONS:
1. ELECTRIC MOTOR.
2. ENGINE MOUNT.
1. ELECTRIC MOTOR.
INSTALLING THE ENGINE MOUNT.
4.5mm
3x 15mm.

B-25J MITCHELL . Instruction Manual
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B-25J MITCHELL. INSTRUCTION MANUAL
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C/A glue
Epoxy glue.
balsa wood piece
C/A glue
C/A glue

B-25J MITCHELL . Instruction Manual
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INSTALLING RETRACTABLE LANDING
GEAR
3 x 12mm
3 x 15mm
Mark point
Drill 2mm hole
Top side
Bottom side

B-25J MITCHELL. INSTRUCTION MANUAL
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Secure
3 x 12mm

B-25J MITCHELL . Instruction Manual
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Retract landing
gear pushrod
Mark point
Secure
Cut
Top side

B-25J MITCHELL. INSTRUCTION MANUAL
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Top side of left haft wing
Top side of left haft wing
Top side
Bottom side of left haft wing
Mark point
Remove covering on
to pre-cut slot of hole

B-25J MITCHELL . Instruction Manual
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Install the engine cowl as same as picture
below.
ENGINE COWLING INTALLATION.
Ply wood piece
Center line
Bottom side
Secure the
wing to
the bottom
nacelle
Cowling
Bottom nacelle
Ply wood piece
25 mm
C/A glue
3 x 12 mm
Epoxy glue

B-25J MITCHELL. INSTRUCTION MANUAL
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Cut nacelle as picture below.
Cut
Push
Mark line 1
Left side
Left nacelle
Right nacelle
Top side
Mark line 2
Left side

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Line 2
Line 1
Mark line 3
Right side
Mark line 4
Right side
Right side
Line 3
Line 4
C/A glue
C/A glue

B-25J MITCHELL. INSTRUCTION MANUAL
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C/A glue
Line 1
Line 2
Line 3
Line 4
Mark point
Push down
and push on
Repeat procedure for the other wing panel.
Secure
Drill 4mm a hole diameter

B-25J MITCHELL . Instruction Manual
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Secure
Secure
2. OPTION 2: ENGINE MOUNT.
Draw the straight line
as picture below.