Seagull Models RACER DELTA 40-46 User manual

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ASSEMBLY MANUAL
RACER DELTA 40-46
Code: SEA307
Specications:
Wingspan---------------39.0 in (98.5 cm).
Wing area---------------641.1 sq.in ( 41.4 sq.dm).
Weight-------------------4.4-4.8 lbs (2.0-2.2 kg).
Length-------------------29.3 in (74.3 cm).
Engine-------------------0.40-0.46 cu.in 2 stroke.
Radio--------------------4 channels with 6 servos.
“ Graphics and specications may change without notice ” .

RACER DELTA 40-46 Instruction Manual.
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ank you for choosing the RACER DELTA 40-46 ARF by SG MODELS . e RACER DELTA
40-46 was designed with the intermediate/advanced sport yer in mind. It is a semi scale air-
plane which is easy to y and quick to assemble. e airframe is conventionally built using bal-
sa, plywood to make it stronger than the average ARF, yet the design allows the aeroplane to be
kept light. You will nd that most of the work has been done for you already. e motor mount
has been tted and the hinges are pre-installed. Flying the RACER DELTA 40-46 is simply a joy.
is instruction manual is designed to help you build a great ying aeroplane. Please read
this manual throughly before starting assembly of your RACER DELTA 40-46. Use the parts
listing below to indentify all parts.
INTRODUCTION.
WARNING.
KIT CONTENTS
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2
3
2
4
5
6
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 & REPONSIBILITY.
If you are inexperienced with basic R/C ight we strongly recommend you contact your R/C
supplier and join your local R/C model Flying Club. R/C Model Flying Clubs oer a variety
of training procedures designed to help the new pilot on his way to successful R/C ight.
ey will also be able to advise on any insurance and safety regulations that may apply.

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KIT CONTENTS.
SEA307 RACER DELTA 40-46
1. Fuselage
2. Rudder
3. Cowling
4. Canopy
5. Pilot
6. Landing gear
ADDITIONAL ITEMS REQUIRED.
TOOLS & SUPPLIES NEEDED.
in cyanoacrylate glue.
Medium 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.
read-lock.
Paper towels.
�0.40-0.46 cu in 2 stroke.
�Computer radio with 6 servos.
�Glow plug to suit engine.
�Propeller to suit engine.
�Protective foam rubber for radio
system.
COMBINE THE WINGS.
Fill Epoxy.
Fill Epoxy.
Fill epoxy on whole wing panel, included
hole for wing tube.

RACER DELTA 40-46 Instruction Manual.
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HINGING THE AILERON.
Note : e control surfaces, including the ai-
lerons, elevators, and rudder, are prehinged
with hinges installed, but the hinges are not
glued in place. It is imperative that you prop-
erly adhere the hinges in place per the steps
that follow using a high-quality thin C/A glue.
1) Carefully remove the aileron from one
of the wing panels. Note the position of the
hinges.
2) Remove each hinge from the wing panel
and aileron and place a T-pin in the center of
each hinge. Slide each hinge into the wing
panel until the T-pin is snug against the wing
panel. is will help ensure an equal amount
of hinge is on either side of the hinge line
when the aileron is mounted to the aileron.
3) Slide the wing panel on the aileron until
there is only a slight gap. e hinge is now
centered on the wing panel and aileron. Re-
move the T-pins and snug the aileron against
the wing panel. A gap of 1/64” or less should
be maintained between the wing panel and
aileron.
Hinge.
Fill Epoxy.
in CA glue.
in CA glue.

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NOTE : e hinge is constructed of a spe-
cial material that allows the C/A to wick
or penetrate and distribute throughout
the hinge, securely bonding it to the wood
structure of the wing panel and aileron.
in CA.
5) Turn the wing panel over and deect the
aileron in the opposite direction from the
opposite side. Apply thin C/A glue to each
hinge, making sure that the C/A penetrates
into both the aileron and wing panel.
6) Using C/A remover/debonder and a pa-
per towel, remove any excess C/A glue that
may have accumulated on the wing or in the
aileron hinge area.
7) Repeat this process with the other wing
panel, securely hinging the aileron in place.
8) Aer both ailerons are securely hinged,
rmly grasp the wing panel and aileron to
make sure the hinges are securely glued and
cannot be pulled out. Do this by carefully ap-
plying medium pressure, trying to separate
the aileron from the wing panel. Use caution
not to crush the wing structure.
Work the aileron up and down sev-
eral times to “work in” the hinges
and check for proper movement.
Note :
4) Deect the aileron and completely satu-
rate each hinge with thin C/A glue. e ailer-
ons front surface should lightly contact the
wing during this procedure. Ideally, when
the hinges are glued in place, a 1/64” gap or
less will be maintained throughout the lengh
of the aileron to the wing panel hinge line.
INSTALL THE AILERONS
CONTROL HORN.
Epoxy.
Fiberglass control horn

RACER DELTA 40-46 Instruction Manual.
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Use a pin vise and a small drill bit to drill
small pilot holes in the servo mount for the
servo mounting screws. Use the screws sup-
plied with your radio system to mount the
servo in place on the servo mount. Repeat
this procedure to mount the servo in the op-
posite panel.
Epoxy.
Aileron control horn.
INSTALLING THE AILERON SERVOS.
AILERON PUSHROD INSTALLATION.
Please see below pictures.
12.5mm
M3 clevis. M3 lock nut.
14.5mm

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INSTALLING THE MAIN LANDING
GEAR TO FUSELAGE.

RACER DELTA 40-46 Instruction Manual.
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MOUNTING THE TAIL WHEEL.
Collar.
Collar.
Locate the items necessary to install tail
gear.
Collar.

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14.5mm
M3 clevis. M3 lock nut.
16.6mm

RACER DELTA 40-46 Instruction Manual.
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Collar.
Collar.
HINGING THE RUDDER.
Glue three rudder hinges in place using
the same techniques used to hinge the ai-
lerons.

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INSTALL RUDDER CONTROL HORN.
Repeat steps to install the rudder control
horn as same as steps done for ailerons.
Epoxy.
Fiberglass control horn
Rudder berglass control horn.
INSTALLING THE RUDDER SERVOS.
..
Because the size of servos dier, you
may need to adjust the size of the precut
opening in the mount. e notch in the
sides of the mount allow the servo lead to
pass through.
1) Place the servo between the mounting
blocks and space it from the hatch. Use a
pencil to mark the mounting hole loca-
tions on the blocks.

RACER DELTA 40-46 Instruction Manual.
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2) Use drill bit in a pin vise to drill the
mouting holes in the blocks.
3) Apply 2-3 drops of thin C/A to each
of the mounting holes. Allow the C/A to
cure without using accelerator.
C/A glue
4) Secure the servo to the rudder hatch
using Phillips screwdriver and the screws
provided with the servo.
5) Apply 1-2 drops of thin C/A to each of
the mounting tabs. Allow the C/A to cure
without using accelerator.
C/A glue
6) Set the rudder hatch in place and use a
Phillips screw driver to install it with four
wood screws.

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M2x10mm
Repeat this procedure to mount the servo in
the other panel.
INSTALLING VERTICAL STABILIZER
2) Use a ruler and carefully cut the cover-
ing inside the line drawn on the stabilizer
to remove the covering. Use care not to
cut into the underlying wood, weakening
the stabilizer.
1) Check all alignments. Mark the out-
line of the fuselage on vertical stabilizer.
Pen
3) Slide the vertical stabilizer back in-
place. Using a triangle, check to ensure
that the vertical stabilizer is aligned 90º.
Remove covering.
4) When you are sure that everything is
aligned correctly, mix up a generous
amount of Flash 30 Minute Epoxy. Set
the stabilizer in place and realign. Dou-
ble check all of your measurements
once more before the epoxy cures.
RUDDER PUSHROD INSTALLATION.
Repeat steps as same as steps done for
aileron.
900
900

RACER DELTA 40-46 Instruction Manual.
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Use a felt tip pen to mark the wire where
it crosses the hole. Use a pair of pliers to
put a shrp 90-degree bend in the wire at
the mark.
Repeat this procedure to mount the servo in
the other panel.
INSTALLING THE STOPPER
ASSEMBLY.
1) Using a modeling knife, carefully cut
o the rear portion of one of the 3 nylon
tubes leaving 1/2” protruding from the
rear of the stopper. is will be the fuel
pick up tube.
13.5mm
M3 clevis. M3 lock nut.
15.5mm

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2) Using a modeling knife, cut one length
of silicon fuel line. Connect one end of
the line to the weighted fuel pick up and
the other end to the nylon pick up tube.
3) Carefully bend the second nylon tube up
at a 45º angle. is tube is the vent tube.
4) Test t the stopper assembly into the tank.
It may be necessary to remove some of the
ashing around the tank opening using a
modeling knife. If ashing is present, make
sure none falls into the tank.
Vent tube. Fuel pick up tube.
Fuel fill tube.
5) With the stopper assembly in place, the
weighted pick-up should rest away from the
rear of the tank and move freely inside the
tank. e top of the vent tube should rest just
below the top of the tank. It should not touch
the top of the tank.
6) When satised with the alignment of the
stopper assembly tighten the 3 x 20mm ma-
chine screw until the rubber stopper expands
and seals the tank opening. Do not over-
tighten the assembly as this could cause the
tank to split.
FUEL TANK INSTALLATION.
You should mark which tube is the vent
and which is the fuel pickup when you attach
fuel tubing to the tubes in the stopper. Once the
tank is installed inside the fuselage, it may be
dicult to determine which is which.
Tie wrap.

RACER DELTA 40-46 Instruction Manual.
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7) Slide the fuel tank into the fuselage. Guide
the lines from the tank through the hole in
the rewall.
8) Use balsa block to hold in place the fuel
tank with C/A glue to secure the fuel tank
inside the fuselage.
Blow through one of the lines to ensure
the fuel lines have not become kinked inside
the fuel tank compartment. Air should ow
through easily.
Balsa block.
C/A glue.
ENGINE MOUNT INSTALLATION.
1) Locate the items necessary to install
the engine mount included with your
model.
2) Use four 4x25mm head bolts and four
4mm washers to attach the engine mount
rails to the rewall. Tighten the screws .
Make sure to use threadlock on the screws
to help prevent them from vibrating loose.
read locker glue.
MOUNTING THE ENGINE.
1) Position the engine with the drive
washer (113mm) forward of the rewall
as shown.
2) Use a pin drill and 2mm drill bit to
drill a small indentation in the mount for
the engine mounting screw.
113mm
2mm

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THROTTLE SERVO ARM
INSTALLATION.
Install adjustable servo connector in the
servo arm as same as picture below:
Servo arm.
Adjustable servo
connector.
Loctite secure.
3) Use a drill to drill the four holes in the
engine mount rails.
Machine screw 3x20mm
4) On the re wall has the location for the
throttle pushrod tube (pre-drill).
5) Slide the pushrod tube in the rewall
and guide it through the fuel tank mount.
Use medium C/A to glue the tube to the
rewall and the fuel tank mount.
6) Connect the Z-bend in the 450mm
throttle pushrod to the outer hole of the
carburetor arm.
7) Slide the throttle pushrod wire into
the tube. Position the engine between the
mounts. Use four M4x30mm machine
screws to secure the engine to the mount
as shown.
Pushrod wire.
2mm

RACER DELTA 40-46 Instruction Manual.
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Reinstall the servo horn by sliding the
connector over the pushrod wire. Cent-
er the throttle stick and trim and install
the servo horn perpendiular to the servo
center line.
Move the throttle stick to the closed po-
sition and move the carburetor to closed.
Use a 2.5mm hex wrench to tighten the
screw that secures the throttle pushrod
wire. Make sure to use threadlock on the
screw so it does not vibrate loose.
COWLING.
Carefully trim the cowling to t over the
engine. Use the photo here and those on
the box as a guide. e photo shows the
completed engine installation as a refer-
ence for all the trimming necessary to t
the cowl over the engine.

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1) Tape the cowl to the fuselage using
low-tack tape.
2) Use a drill and drill bit to drill the holes
for the cowl mounting screws. Make sure
the cowl position is correct before drill-
ing each hole.
Because of the size of the cowl, it may be nec-
essary to use a needle valve extension for the
high speed needle valve. Make this out of suf-
cient length 1.5mm wire and install it into
the end of the needle valve. Secure the wire in
place by tightening the set screw in the side of
the needle valve.
3x10mm

RACER DELTA 40-46 Instruction Manual.
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ELECTRIC POWER CONVERSION.
1) Locate the items neccessary to install
the electric power conversion included
with your model.
2) Recommend the items necessary to in-
stall the electric power conversion parts
included with your model.
- Motor: 800 - 925 Watts
- Propeller: 11x7 ~ 14x10
- ESC: 60A
- 3S- 5S Lipo
3) Attach the electric motor box to the
rewall suitable with the cross lines
drawn on the electric motor box and re-
wall. Using epoxy and balsa stick to se-
cure the motor box to the rewall. Please
see pictures below.
4) Attach the motor to the front of the
electric motor box using four 4mm blind
nut, four M3x15mm hex head bolts to se-
cure the motor. Please see picture shown.
M4x20mm
4 mm