Diamond
ELECTRIC GLIDER ARF
SPECIFICATION
- Wingspan: 2020mm (79.5 in)
- Length: 1237mm (48.7 in)
- Flying weight: 1500-1600gr
- Wing area: 36 dm2
- Wing loading: 40-45 g/dm2
- Wing type: RG airfoils
- Covering type: Genuine ORACOVER®
- Radio: 6 channel – 6 mini servo: 2 aileron;
2 flap; 2 elevator (not included)
- Propeller: suit with your engine
- Motor: brushless outrunner 400-500W, 920 KV
- Gravity CG: 75-80 mm (3,1 in) Back from
the leading edge of the wing, at the fuselage
- Control throw aileron: Low: 6mm right/left,
15% expo; High: 8mm right/left, 15% expo
- Control throw Elevators: Low: 6mm up/down,
12% expo; High: 8mm up/down, 12% expo
- Experience level: Intermediate
- Plane type: Sailplane
RECOMMENDED MOTOR AND BATTERY SET UP
- Motor: OS OMA-3810-1050 Or Xpower C3520/12
(not included)
- Propeller: 12x8 foilding (not included)
- Lipo cell: 3 cells / 2000 – 2400mAh (not included)
- Esc: 40-60A (not included)
Instruction Manual
TOOLS AND SUPPLIES NEEDED.
• Medium C/A glue.
• 30 minute epoxy.
• 6 minute epoxy.
• Hand or electric drill.
• Assorted drill bits.
• Modeling knife.
• Straight edge ruler.
• 2 bender plier.
• Wire cutters.
• Masking tape.
• Thread lock.
• Paper towels.
• Rubbing alcohol
SUGGESTION
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 aircraft and to protect the table.
Keep a couple of jars or bowls handy to hold the
small parts after you open the bag.
NOTE:
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. The
DIAMOND ELECTRIC GLIDER 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 superior 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 following: paint thinner, C/A
glue accelerator, C/A glue debonder and acetone. Do
not let these 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
• 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 propeller.
• 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.
Instruction Manual
TOOLS AND SUPPLIES NEEDED.
• Medium C/A glue.
• 30 minute epoxy.
• 6 minute epoxy.
• Hand or electric drill.
• Assorted drill bits.
• Modeling knife.
• Straight edge ruler.
• 2 bender plier.
• Wire cutters.
• Masking tape.
• Thread lock.
• Paper towels.
• Rubbing alcohol
SUGGESTION
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 aircraft and to protect the table.
Keep a couple of jars or bowls handy to hold the
small parts after you open the bag.
NOTE:
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. The
DIAMOND ELECTRIC GLIDER 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 superior 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 following: paint thinner, C/A
glue accelerator, C/A glue debonder and acetone. Do
not let these 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
• 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 propeller.
• 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.
1 2 3 4
PREPARATIONS
Remove the tape and separate the ailerons from
the wing and the elevators from the stab. Use a
covering iron with a covering sock on high heat to
tighten the covering if necessary. Apply pressure
over sheeted areas to thoroughly bond the
covering to the wood.
1
INSTALLING THE AILERONS
1. Test fit the ailerons to the wing with the hinges.
If the hinges don’t remain centered, stick a pin
through the middle of the hinge to hold it in
position.
TEMPORARY PIN
TO KEEP HINGE
CENTERED
2
CA glue
5. Apply six drops of thin CA to the top and bottom
of each hinge. Do not use CA accelerator. After
the CA has fully hardened, test the hinges by
pulling on the aileron.
INSTALLING THE AILERON SERVOS
1. Install the rubber grommets and brass eyelets
2. Install the metal connector to the servo arm.
3. Using a modeling knife, remove the covering
4. Install the servo to the servo box.
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Instruction Manual
3. Repeat step # 1 - # 2 to install the control horn
INSTALLING the flap servo
- Repeat step #1 - #7 from installing the aileron
INSTALLING the flap control horn
- Repeat step #1 - #3 from installing the control
INSTALLING THE CONTROL HORNS
1. One aileron control horn in positioned on each
2. Drill two 1.6mm holes through the aileron using
RIGHT WRONG
Remove the covering
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4
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INSTALLING THE AILERON SERVOS
1. Install the rubber grommets and brass eyelets
onto the aileron servo.
2. Install the metal connector to the servo arm.
3. Using a modeling knife, remove the covering
from over the pre-cut servo arm exit hole on the
aileron servo tray / hatch. This hole will allow
the servo arm to pass through when installing
the aileron pushrods.
7
4. Install the servo to the servo box.
5. Using the thread as a guide and using masking
tape, tape the servo lead to the end of the
thread: carefully pull the thread out. When you
have pulled the servo lead out, remove the
masking tape and the servo lead from the
thread.
Servo lead
6
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6. Secure the servo box into the wing.
7. Make the same way to install the second aileron
servo.
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7. Repeat step # 1 - # 6 to install the second
2.
To the cowl
To the cowl
3. Repeat step # 1 - # 2 to install the control horn
on the opposite aileron.
INSTALLING THE AILERON LINKAGES
1. Locate the long piece of wire used for the
aileron pushrod. One end of the wire has been
pre-bend into a “Z “ bend at factory. This ”Z”
bend should be inserted into the control horn
for aileron.
INSTALLING THE flap LINKAGES
1. Repeat #1 - #6 from installing the aileron
INSTALLING the flap servo
- Repeat step #1 - #7 from installing the aileron
servo to install the flap servo.
INSTALLING the flap control horn
- Repeat step #1 - #3 from installing the control
horn aileron to install the control horn flap.
INSTALLING THE CONTROL HORNS
1. One aileron control horn in positioned on each
aileron. Using a ruler and a pen, locate and
mark the location of the control horn. It should
be mounted on the bottom side of the aileron at
the leading edge, in line with the aileron
pushrod.
2. Drill two 1.6mm holes through the aileron using
the control horn as a guide and screw the
control horn in place.
RIGHT WRONG
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Control horn
2. Install the metal connector to the servo arm of
the aileron servo.
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3. Plug the aileron servo into the receiver and
center the servo. Install the servo arm onto the
servo.
4. Slide the aileron pushrod through the metal
connector.
5. Center the aileron and hold it in place using a
piece of masking tape.
6. With the aileron and the aileron servo center.
Secure the screw on the metal connector.
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INSTALLING THE HORIZONTAL STABILIZER
1. Using a modeling knife, cut away the covering
from the fuselage for the stabilizer and remove it.
7. Repeat step # 1 - # 6 to install the second
aileron linkage. After both linkages are
completed, connect both of the aileron servo
leads using a Y-harness you have purchased
separately.
2.
Repeat #1 - #6 from installing the aileron
linkage to install the second flap linkage.
After
both linkages are completed, connect both of
the aileron servo leads using a Y-harness you
have purchased separately.
16
To the cowl
17
To the cowl
14
To the cowl
15
To the cowl
INSTALLING THE flap LINKAGES
1. Repeat #1 - #6 from installing the aileron
linkage to install the flap linkage.
2. Check the fit of the horizontal stabilizer in its
slot. Make sure the horizontal stabilizer is
square and centered to the fuselage by taking
measurements, but don't glue anything yet.
3. With the horizontal stabilizer correctly aligned,
mark the shape of the fuselage onto the bottom
of the horizontal stabilizer
using
a water
soluble/ non-permanent felt-tip pen.
4. Remove the stabilizer. Using the lines you just
drew as a guide, carefully remove the covering
from between them using a modeling knife.
When 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 during flight.
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C.A glue
5. Attach the wing to the fuselage as picture.
7. When you are sure that everything is aligned
correctly, mix up a generous amount of 30
minute epoxy. Apply a thin layer to the bottom
of the stabilizer mounting area and to the stabilizer
mounting platform sides in the fuselage. Insert
the stabilizer in place and re-align. Double
check all of your measurements one more time
before the epoxy cures. Remove any excess
epoxy using a paper towel and rubbing alcohol
and hold the stabilizer in place with T-pins or
masking tape.
6. Test the position of the elevator and adjust it as
shown.
8. After the epoxy has fully cured, remove the
masking tape or T-pins used to hold the
stabilizer in place and carefully inspect the glue
joints. Use more epoxy to fill in any gaps that
were not filled previously and clean up the
excess using a paper towel and rubbing
alcohol.
9. Repeat step #1 - #5 from install the aileron to
install the elevator.
2. Locate the long piece of wire used for the
INSTALLING THE ELEVATOR, PUSHROD
and linkages
1. Carefully cut away the covering material from
the slot.
4. Place the control horn onto the elevator, and
3. Slide the wire pushrod into the fuselage.
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INSTALLing the engine
2. Locate the long piece of wire used for the
elevator pushrod. One end of the wire has
been pre-bend into a “Z “ bend at factory. This
”Z” bend should be inserted into the control
horn for elevator.
4. Place the control horn onto the elevator, and
drill two 1.6mm holes through the elevator
using the control horn as a guide and screw the
control horn in place.
5. Install the metal connector to the servo arm of
the elevator servo.
1. Secure the motor.
2. Secure the aluminum hub to the adafter.
3. Screw the nut and secure it by C.A glue.
4. Secure the spinner.
3. Slide the wire pushrod into the fuselage.
28
6. Plug the elevator servo into the receiver and
center the servo. Install the servo arm onto the
servo.
7. Slide the elevator pushrod through the metal
connector.
8. Center the elevator and hold it in place using a
piece of masking tape.
9. With the elevator and the elevator servo center.
Secure the screw on the metal connector.
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3. Turn the airplane upside down. Place your
4. If the nose of the plane falls, the plane is nose
CONTROL THROWS
1. We highly recommend setting up a plane using
2. The control throws should be measured at the
3. Check to be sure the control surfaces move in
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
75-80mm BACK FROM THE LEADING EDGE
OF THE WING, AT THE FUSELAGE. This
location is recommended for initial test flying
and trimming. BALANCE A PLANE UPSIDE
DOWN WITH THE FUEL TANK EMPTY.
2. Mount the wing to the fuselage. Using a couple
of pieces of masking tape, place them on the
top side of the wing 75-80mm back from the
leading edge, at the fuselage sides.
!
LATERAL BALANCE
After you have balanced a plane on the C.G.
5. Turn the airplane upside down. Attach one loop
6. If one side of the wing fall, that side is heavier
INSTALLing the engine
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INSTALLing the battery and recEIver
glue the plastic cover
1. Secure the motor.
2. Secure the aluminum hub to the adafter.
3. Screw the nut and secure it by C.A glue.
4. Secure the spinner.
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C.A glue
C.A glue
C.A glue
35
Battery
Always operate in open areas, away
from factories, hospitals, schools,
buildings and houses etc. NEVER fly
your aircraft close to people or built
up areas.
NEVER fly near power lines, aerials
or other dangerous areas including
airports, motorways etc.
NEVER fly in wet conditions or on
windy or stormy days.
ALWAYS adjust the engine from
behind the propeller, and do not allow
any part of your body to be in line
with the propeller.
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 nose
heavy. 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.
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.
Aileron Control
6mm
6mm
Elevator Control
6mm
6mm
Flap Control
10mm
75-80mm
!
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.
5. 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.
6. 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.
8
FLIGHT PREPARATION
PRE FLIGHT CHECK
1. Completely charge your transmitter and receiver
batteries before your first 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 the receiver antenna. It should be fully
extended and not coiled up inside the fuselage.
6. Properly balance the propeller.
Aileron : 6 mm right 6 mm left
Flap : 10 mm down
Elevator : 6mm up 6mm down
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DIAMOND
I/C FLIGHT WARNINGS
Always operate in open areas, away
from factories, hospitals, schools,
buildings and houses etc. NEVER fly
your aircraft close to people or built
up areas.
THE PROPELLER IS DANGEROUS
Keep fingers, clothing (ties, shirt
sleeves, scarves) or any other loose
objects that could be caught or drawn
in, away from the propeller. Take care
at ALL times.
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
or animal.
NEVER fly near power lines, aerials
or other dangerous areas including
airports, motorways etc.
NEVER use damaged or deformed
propellers or spinners.
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.
ALWAYS adjust the engine from
behind the propeller, and do not allow
any part of your body to be in line
with the propeller.
I/C FLIGHT GUIDELINES
When ready to fly, first extend the
transmitter aerial.
Operate the control sticks on the
transmitter and check that the control
surfaces move freely and in the
CORRECT directions.
ALWAYS land the model INTO the
wind, this ensures that the model lands
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 off into the wind.
Check that the wings are correctly
fitted to the fuselage.
If the model does not respond correctly
to the controls, land it as soon as
possible and correct the fault.
Empty the fuel tank after flying, fuel left
in the tank can cause corrosion and
lead to engine problems.
Made in Vietnam
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