Richmond DORNIER DO 27 Installation and operating instructions

DORNIER DO 27
SEMI SCALE SPORT MODEL
Assembly and Operations Manual
Please review this manual throughly
Before Assembling or Operating
The
DORNIER DO 27
Semi Scale Sport Model
DORNIER DO 27
We’ve used our ULTRA TOUGH POLYCOTE ECS Enhanced Covering System
for this Model
TM

Stage 1 – WING ASSEMBLY.
JOINING THE WING HALVES
To join the wing halves you will need the following items :
Wing joiner supplied with kit.
Two short dowel guides supplied with kit
Rolled trim strip supplied with kit
30 minute epoxy
Sandpaper ( Coarse 240 grit recommended )
Epoxy brush or stir sticks
Disposable mixing dish for the epoxy
Low tack masking tape to hold the wing in position while the epoxy sets
Pencil
Ruler
Paper towels.
Stage 2
2
Locate the wing joiner & dowel guides and insert
into one of the wing panels as shown. Mark a
centre line on the wing joiner and dowel guides
as shown below.Trial fit the second wing panel
to ensure a good dry fit before gluing.
1.1 Orientation of wing joiner and dowel
guide
1.2 Trial fit the wing joiner and dowel guides
wing joiner dowel guides
Apply plenty of 30 minute epoxy to one end of the wing join-
er, using a stir stick or epoxy brush. Carefully insert the joiner
into the first wing panel as shown in the sequence below, then
wipe off the excess glue that squeezes out of the joint with a
cloth or tissue. Repeat this process several times to ensure
that the wing joiner and cavity are well coated in with epoxy.
Do not use 5 minute epoxy to join the wings.
2.1 Apply epoxy to one end of wing joiner
2.2 Carefully insert the joiner...
Also the dowel guides...
2.3 ... all the way into the
centre line
2.4 Wipe off any excess
epoxy that squeezes out.
Centre line
TM

Stage 3
Stage 4
Stage 5
3
When the epoxy has cured in Stage 2, trial fit the second wing panel onto
the first to ensure that the two panels fit without an excessive gap.
Now apply plenty of epoxy to the joiner & both wing roots where the
wing panels will meet. Use 30 minute epoxy to ensure a
strong bond and give yourself plenty of working time. Now join the wings.
The epoxy should ooze from the joint and the excess should be
cleaned off with a rag or tissue before it cures.
Use low tack masking tape to hold the two panels tightly together
until the epoxy cures.
3.1 Apply plenty of glue 30 minute
epoxy to joiner & both wing roots.
3.2 Align the two wing panels 3.3 Slowly close the gap
3.4 Use tape to hold tightly together
4.1 Apply tape over the joint,
starting here.
4.2 Continue across the top of
the wing,pressing down firmly.
4.3 Trim off any excess trim tape.
Once the epoxy has cured completely (allow several hours at least) carefully peel back the tape and remove it.
To cover the joint in the wings, a length of wing joiner tape is supplied. Starting from the upperside, stick the tape
centrally over the joint ensuring that it is pressed down firmly as you work around the wing. Wrap the tape all the
way around the wing joint in one piece, starting and finishing at the wiring harness cavities in the bottom of the wing.
FITTING AILERON SERVOS
To install the aileron servos into the wing you will need the
following items :
- 2 servos
- Servo mounting screws and grommets as supplied with
your servos.
- Servo control arms as supplied with the servos.
- Two aileron control rod assemblies supplied with the kit.
The assemblies consist of a metal rod with a plastic clevis
screwed onto one end.
- Low tack masking tape.
- 2 aileron control horn assemblies & 2 EZ Connectors.
Prepare the servos by fitting the rubber grom-
mets & ferrules supplied with your servo.

Stage 6
4
Carefully remove the white cover plates from the aileron
servo cavities. Ensure you know which cover plate is for the
right wing and which is for the left. Remove the white cover
plates and retain the mounting screws. Notice that there are
wooden servo rails pre-installed onto each cavity plate.
Locate the wiring harness tubes that are protruding slightly
into each aileron servo cavity. The tube can be moved slight-
ly at this point. Check out the other end of each tube for a
clean position and then using C/A glue secure the wiring har-
ness tubes at the aileron servo cavity end.
Install a servo onto each cavity plate and connect the
servo wire to the servo extension wires and run the extension
wires through the wiring harness tubes to the centre of the wing.
Install the aileron control horns and EZ Connectors.
Aileron servo cavity
5. Aileron servo location
5.1 Aileron servo mount 5.2 Screw servo into position 5.3 Install horn & EZ Connector
Step 1 Consult your radio instruction manual and center each aileron servo by plugging it into the aileron chan-
nel of the receiver. Turn on the transmitter and then the receiver. Center the aileron trim lever on the transmitter.
Remove the servo arm mounting screw and the servo arm.
Step 2 Mount the servo arm back on the servo. Position the arm to be parallel with the back edge of the wing.
Screw the arm into place with the servo arm mounting screw supplied with the servo.
Locate the two aileron control rods in the hardware bag. Ensure the clevises are screwed well onto the threaded
portion of the rod. Rotate and tug aggressively on the clevises and ensure that they are not loose on the rods.
Tape the ailerons into their neutral position so that they are even with the trailing edge of the wing and not pointing
either up or down.
Step 3 Ensure that the aileron control horns are screwed onto the threaded aileron control horn bolts and that both
control horns are in approximately the same place on their respective bolts.
Step 4 Connect the aileron servo rods to the aileron control horns.The one end with the clevis will be attached to the
servo output arm.
Step 5 Connect the other end of the rod to the control horn pre-installed with an EZ connector
Step 6 Carefully peel back and remove the masking tape holding the ailerons.
Step 7 In the case of computer radios couple the servos together by connecting them to the appropiate receiver channel.
In the case of analog radios couple the servos together using a Y harness
Step 8 Turn on your radio and activate the ailerons using the aileron stick and ensure a smooth full motion can be
achieved.
Step 9 With the wing top side up and viewed from the back, ensure that moving the transmitter aileron stick to the
left raises the left aileron and lowers the right aileron. Movement of the stick to the left will roll the aircraft to the left.
(Counterclockwise roll of the wing when viewed from the back ).
Step 10 With the wing top side up and viewed from the back, ensure that moving the transmitter aileron stick to the
right raises the right aileron and lowers the left aileron. Movement of the stick to the right will roll the aircraft to the
right.

Stage 7
5
6.1 Aileron control rod assembly 6.2 Aileron control horn assembly 6.3 Aileron control rod installed
FITTING FLAP SERVOS
To install the aileron servos into the wing you will need
the following items :
- 2 servos
- Servo mounting screws and grommets as supplied
with the servo.
- Servo control arm as supplied with the servo.
- Two flap control rod assemblies
- Low tack masking tape.
7.1 Flap control rod assembly
7.2 Flap servo location 7.3 Flap servo installed in position 7.4 Final flap instalation
7.5 Flap down 7.6 Flap up
Flap servo location

Stage 8
Stage 9
Stage 10
6
FITTING THE HORZONTAL AND VER-
TICAL STABILIZERS
To mount the stabilizers to the fuselage you will need.
- Fuselage
- Vertical stabilizer with pre-installed rudder
- Horizontal stabilizer with pre-installed elevator
The completed fuselage slotsshould look like this
Vertical slot
Horizontal slot
Horizontal stabilizer with pre-installed elevator
Vertical stabilizer with pre-installed rudder
Check the fit of the horizontal stabilizer
in its slot. Make sure the tail is square
and centred to the fuselage by taking
measurements as shown in the dia-
grams on the right, but don’t glue any-
thing yet.
Equal
distance
Equal distance
900
9.1 Trial fit the horizontal stabilizer in
its slot
With the horizontal stabilizer cor-
rectly aligned, mark the shape of the
fuselage on the top and bottom of
the tailplane using a water sol-
uble non-permanent felt-tip pen as
shown here.
10.1 Mark the top of the horizon-
tal stabilizer
10.2 Followed by the bottom

Stage 11
Stage 12
Stage 13
7
Now remove the horizontal stabiliz-
er. Using a sharp knife and a ruler
CAREFULLY cut 2mm inside the
marked lines and remove the cover-
ing on the top and bottom of the tail
as shown. Make sure you only cut
the film and not the wood, otherwise
the horizontal stabilizer will be
severely weakened.
11.1 Marked lines on horizontal
stab
11.2 Cutting inside the lines.
11.3 Remove covering from top
surface
11.4 Exactly the same underneath 11.5 Clean off any traces of pen
Now apply sufficient epoxy to the top and bottom of the
horizontal stabilizer. Use 30 minute epoxy to ensure a
strong bond and give yourself plenty of working time.
Insert the horizontal stabilizer in its slot in the fuselage
and re-check the alignment as in Stage 9. Excess epoxy
should be cleaned off with a rag or tissue before it cures.
12.1 Apply plenty of epoxy 12.2 Slide the horizontal stabilizer
into place
12.3 Wipe off excess epoxy
Check the fit of the vertical stabilizer in its slot.
Make sure that it is glued square to the horizon-
tal stabilizer and fuselage
FITTING THE VERTICAL STABILIZER WITH RUDDER
13.1 Trial fit the vertical stabilizer into fuselage.

Stage 14
Stage 15
Stage 16
8
14.1 Mark both sides of the verti-
cal stabilizer
14.2 Carefully cut through the
covering. Do NOT cut the wood.
14.3 Remove covering from both
sides
Mark the shape of the fuselage on the left and right
sides of the vertical stabilizer using a felt-tip pen. Now
remove the vertical stabilizer, using a sharp knife &
ruler, CAREFULLY cut just 2mm inside the marked
lines and remove the covering on both sides of the fin,
just as you did with the horizontal stabilizer, making
sure you only press hard enough to cut the covering,
not the wood of the vertical stabilizer.
Now apply sufficient epoxy to both sides and the bottom
of the vertical stabilizer. Use 30 minute epoxy to ensure
a strong bond and give yourself plenty of working time.
Insert the vertical stabilizer in its slot in the fuselage
and re-check the alignment. Excess adhesive should
be cleaned off with a rag or tissue before it cures.
15.1 Apply plenty of epoxy 15.2 Slide the vertical stabilizer into place
FITTING THE MAIN LANDING GEAR
Identify the main landing gear components shown
below here.
- 2 main landing gear assemblies
- 2 main wheels ( 60mm x 20mm)
- 1 ABS main landing gear cover (with 6 mounting
screws)
- 4 sheet metal screws 5 x 35 mm & 2 straps
- 2 wheel collars
16.1 Main landing gear components

Stage 17
Stage 18
9
16.2 Turn over the fuselage &
locate the pre-drilled main land-
ing gear mounting holes
16.3 Use 4 sheet metal screws and
2 straps to mount the main landing
gear onto the fuselage
16.4 Drill pilot holes with a
1/16 (or 1,6 mm) drill-bit
16.5 Mount the main landing gear
fairing with a 2x10 screw
16.6 Install the wheel 16.7 Install the main landing gear
cover using 6 screws.
FITTING THE TAIL WHEEL
17.1 Insert the tail wheel steering
wire into the steering guide tube
17.2 Screw the tail wheel assem-
bly to the fuselage
17.3 Trim off the excess tail steer-
ing wire
Install the tail wheel assembly. Note that the tail wheel
assembly has a loose wire end. Slide the loose wire
end into the sleeve tube that has been installed into
bottom of the rudder. Position the plastic bracket on
the bottom of the fuselage. Mark the location of the
screw holes. Tap the holes with the screws and then
fasten the plastic bracket to the fuselage. See the
illustration below.
FITTING THE FUEL TANK
To assemble the fuel tank you will need the following
items:
- The fuel tank and fuel stopper assembly (supplied)
- The clunk (supplied)
- About 7” (20 cm) of medium ID silicone fuel line (DUB
197 or similar)
- Cross head Philips screw driver

Stage 19
10
18.1 Use 100 mm (4 in) for fuel line
and 50 mm (2 in) for pressure line
18.2 Illustration of fuel line posi-
tioning inside the tank
18.3 Fuel tank installed on the
power module. Use silicone.
100 mm (4 in) for fuel line
50 mm (2 in) for pressure line
fuel line
pressure line fuel line
pressure line
INSTALLING THE ENGINE
The engine and the fuel tank are installed onto the
power module. First remove the power module from
the fuselage by removing the 4 nuts & washers
19.1 Aluminum engine mount 19.2 Power module assembly 19.3 Engine thrust line
Fuel tank
holder dowel Engine thrust line
19.4 Engine and engine mount
recommended orientation.
19.5 Engine and fuel tank posi-
tioned on the power module
19.6 Throttle control connection
to the engine
fuel line
pressure line fuel line
pressure line
19.7 Cowl installation 19.7 Install the muffer and con-
nect the fuel and pressure line
19.8 Install asuitable prop and
spinner
VMAX Pro.46 engine recommended