Vmar Stinger Installation and operating instructions

1
Model airplanes, model engines, model engine fuel, propellers
and related accessories, tools and equipment can be haz-
ardous if improperly used. Be cautious and follow all safety
recommendations when using your VMAR model airplane.
Keep hands, tools, clothing and all foreign objects well clear of
engines when they are operating. Take particular care to safe-
guard and protect your eyes and fingers and the eyes and fin-
gers of other persons who may be nearby. Use only a good
quality propeller that has no cracks or flaws. Stay clear of the
propeller and stay clear of the plane of rotation defined by the
propeller. The Manufacturer, Distributor, Retailer and/or other
suppliers of this product expressly disclaim any warranties or
representations, either expressed or implied, including but not
limited to implied warranties of fitness for the purposes of
achieving and sustaining remotely controlled flight. In no event
will the Manufacturer, Distributor, Retailer and/or other suppli-
ers of this product have any obligation arising from contract or
tort, or for loss of revenue or profit, or for indirect, special, inci-
dental, consequential or other damages arising from the use of
this product. In purchasing and/or using this product, the user
accepts all responsibility for its use and accepts all liability
associated with such use.
A Remote Control Model Aircraft is not a toy. It is a flying
model that functions much like a full size airplane. If you
do not assemble and operate this product properly you
can cause injury to yourself and others and damage prop-
erty. DO NOT FLY this model if you are not qualified.
You are entirely responsible for the mechanical,
aeronautical and electrical integrity of this model and it's
structure, control surfaces, hinges, linkages, covering,
engine, radio, wiring, battery and all other components.
Check all components before and after each flight.
Don't fly until it's right!
The Graphics and Detailing are inside the POLYCOTE ECS!
Proceeding with assembly and use of this product indicates
Agreement With & Acceptance of the following Liability Disclaimer.
CAUTION
ASSEMBLY & OPERATIONS MANUAL
Please review this manual thoroughly before assembling or operating this model.

2
WING ASSEMBLY - JOINING THE WING HALVES
1.1 Locate the wing joiner (also called Dihedral brace).
Using the ruler, determine the center of the wing
joiner and mark it with a pencil as illustrated in 1A.
Also mark a center line on each of the dowel guides.
1.2 Trial fit the wing joiner into the wing panels. It should
insert smoothly up to the center line as illustrated in
1B. Now slide the other wing panel onto the wing
joiner until the wing panels meet. If the fit is overly
tight, sand the wing joiner slightly and try again.
Mark the joiner to indicate which way is UP as illus-
trated in 1A.
1A- Preparation of wing joiner and dowel guides. 1B- Trial fit the wing joiner and dowel guides
1.3 Insert the dowel guides into one of the wing panels
all the way to the center lines. Apply CA glue to
secure the dowels into their places as illustrated in
1B and 1C. Do not apply CA glue to the wing joiner.
1.4 Apply plenty of 30 minute epoxy to one end of the
wing joiner, using a stir stick or epoxy brush.
Carefully insert the joiner into the first wing panel as
illustrated in 1D, 1E and 1F, then wipe off the excess
epoxy 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
epoxy. When the wing joiner & cavity are well coat-
ed with 30 minute epoxy, insert the joiner to the cen-
ter line, wipe away any excess epoxy and let dry.
(Note: Do not use 5 minute epoxy or CA to join the
wings)
1C- Apply CA glue to secure dowels into their places 1D- Apply plenty of epoxy glue to the wing joiner.
wing joiner
dowel guides
UP
Center line
UP
UP
UP
Parts needed
- Roll of wing joiner tape
- Right and left wing panels
- Wing joiner (also called dihedral brace)
- Two short dowel guides
Tools and Adhesives needed
- 30 minute epoxy
- Epoxy brush or stir sticks
- Disposable mixing dish for the epoxy
- Sandpaper (Coarse 240 grit recommended)
- Low tack masking tape
- Pencil
- Knife
- Ruler
- Paper towels.
STAGE
1

3
2.1 When the epoxy has cured in Stage 1, trial fit the
second wing panel onto the wing joiner first to
ensure that the two panels fit without an excessive
gap.
2.2 Now apply plenty of epoxy to the wing joiner and
wing root ribs of both wing panels. Use only 30
minute epoxy to ensure a strong bond and give
yourself plenty of working time. As described in the
Step 1.4, repeatedly apply epoxy and insert into the
wing joiner cavity, the epoxy should ooze from the
joint and the excess should be cleaned off with a rag
or tissue before it cures.
2.3 Use low tack masking tape to hold the two panels
together until the glue cures.
1E- Carefully insert the joiner all the way to the center line
3.1 Once the epoxy has cured completely (allow sever-
al hours at least), the tape can be carefully removed
from the wing panels. Peel the tape back on itself…
do not pull upright away from the wing. To seal and
finish the joint in the wings, a roll of wing joiner tape
has been supplied.Starting on the bottom side of the
wing, 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 servo
mounting cavity in the bottom of the wing.
Center line pointing up
1F - Wipe off the excess epoxy then allow to cure.
3C-Continue over to the bottom of the
wing & along to the servo cavity
and trim off the excess tape.
3B.Continue applying the tape over
the top of the wing, pressing
down firmly as you go.
3A.Apply tape over the joint starting
here on the bottom at the servo
cavity.
UP UP
WING ASSEMBLY - JOINING THE WING HALVES (Cont.)
STAGE
1
WING ASSEMBLY - JOINING THE WING HALVES (Cont.)
STAGE
3
2C- Use low tack masking tape to
hold tightly together.
2B- Align the two wing panels and
slowly close the gap until the
wing root ends are firmly in
contact with each other
2A- Apply plenty of 30 minute epoxy
glue to all surfaces.

4
Aileron servo cavity
4B- Aileron servo location
4A- Prepare the servos by fitting the rubber grommets &
ferrules supplied with your radio
To install the aileron servo into the wing you will need the fol-
lowing items :
- Servo
- Servos mounting screws and grommets as supplied with
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 both ends.
- Low tack masking tape.
- 2 aileron control horn assemblies
4.1 Turn the wing upside down.
4.2 Trial fit the aileron servo into the servo mounting cav-
ity. You may have to modify the cavity slightly to pro-
vide clearance for the servo and servo wires.
4.3 Use a hobby knife to modify the cavity as required.
Most servos have their output shaft closer to one end
than the other. We recommend locating the servo so
that the output shaft is as close to the front of the wing
as possible.
4.4 Screw the servo into place with the screws and grom-
mets supplied. It is important to install the grommets
and screws correctly. See the manual that came with
your radio for instructions about your particular servo
grommets.
4.5 Fasten the screws down according to the servo man-
ufacturers recommended tightness.
5A. Aileron control rod assembly 5B. Aileron torque rod with control
horn 5C- Aileron servo and control rods installed.
3/4” (20 mm)
Aileron control horn
Aileron torque rod
5.1 Consult your radio instruction manual and center the
aileron servo by plugging it into the aileron channel
in the receiver. Turn on the transmitter and then the
receiver. Center the aileron trim lever on the trans-
mitter. Remove the servo arm mounting screw and
the servo arm.
5.2 Mount the servo arm back on the servo so that the
arm is parallel with the back edge of the wing. Screw
the arm into place with the servo arm mounting
screw supplied with the servo.
5.3 Locate the two aileron control rods in the hardware
bag (see 5A). 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.
5.4 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.
5.5 Ensure that the aileron control horns are screwed
onto the threaded aileron torque rods that protrude
from the wing and that both control horns are in
approximately the same place on their respective
torque rods (see 5B).
Aileron
INSTALLING THE AILERON SERVO INTO THE WING.
STAGE
4
INSTALLING THE AILERON CONTROL SYSTEM
STAGE
5

5
5.6 Connect the aileron servo control rods to the aileron
control horns as shown in 5C.
5.7 Carefully remove the masking tape holding the
ailerons.
5.8 Turn on your radio and activate the ailerons, using
the aileron stick and ensure that a smooth full
motion can be achieved.
5.9 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).
5.10 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. (Clockwise roll of the wing when
viewed from the back).
To install the stabilizers into the fuselage you will need.
- Fuselage
- Vertical stabilizer with pre-installed rudder
- Horizontal stabilizer with pre-installed elevator
6A. The fuselage slots for the vertical & horizontal
stabilizers
6B. Horizontal stabilizer with pre-installed elevator 6C. Vertical stabilizer with pre-installed rudder
Vertical slot
Horizontal slot
7.1 Check the fit of the horizontal stabilizer in its slot. Make sure
the tail is square and centered to the fuselage by taking meas-
urements as shown in pictures 7A, 7B and 7C.
Do not glue anything yet.
90o
7A. Trial fit the horizontal stabilizer in
its slot
7B. Alignment of horizontal stabilizer top view. 7C. Alignment back view
FITTING THE HORIZONTAL AND VERTICAL STABILIZERS
STAGE
6
ALIGNMENT OF HORIZONTAL STABILIZER
STAGE
7

6
8.1 With the horizontal stabilizer-
aligned correctly, mark the
shape of the fuselage on the top
& bottom of the horizontal stabi-
lizer using a water soluble non-
permanent felt-tip pen as shown
here
8A. Mark the top of the horizontal
stabilizer... 8B. ...and the bottom
9.1 Now remove the horizontal sta-
bilizer & using a sharp knife & a
ruler CAREFULLY cut 1/8" (3
mm) inside the marked lines &
remove the covering on the top
& bottom of the horizontal stabi-
lizer as illustrated. Make sure
you only cut the film & not the
wood, otherwise the horizontal
stabilizer will be severely weak-
ened & fail.
9A. Marked lines on horizontal stab
9B. Cutting inside the lines
9C. Remove the covering from top
surface.
9D- Exactly the same underneath 9E- Clean off the pen lines.
10A.Apply plenty of epoxy
10.1 Now apply sufficient epoxy to the top and bottom of the horizontal
stabilizer and horizontal slot. Use 30 minute epoxy to ensure a
strong bond and give yourself plenty of working time (see 10A &
10B).
10.2 Insert the horizontal stabilizer in its slot in the fuselage and re-check
the alignment as in Stage 7 (see 10C).
10.3 Excess epoxy should be cleaned off with a rag or tissue before it
cures (see 10D).
INSTALLING THE HORIZONTAL STABILIZER
STAGE
8
INSTALLING THE HORIZONTAL STABILIZER (Cont.)
STAGE
9
THE HORIZONTAL STABILIZER (Cont.)
STAGE
10
10B.Apply plenty of epoxy 10C.Slide the horizontal stabilizer in
place 10D.Wipe off excess epoxy

7
11.1 Check the fit of the vertical stabilizer in its slot. Make
sure that it is square to the horizontal stabilizer and
fuselage (see 11A)
11.2 Mark the shape of the fuselage on the left & right
sides of the vertical stabilizer using a felt-tip pen (11B)
11.3 Now remove the vertical stabilizer, using a sharp knife
& ruler, CAREFULLY cut just 1/8" (3mm) inside the
marked lines (see 11C) and remove the covering on
both sides of the fin (see 11D), just as you did with the
horizontal stabilizer, making sure you only press hard
enough to cut the covering, not the vertical stabilizer.
Do not cut the wood. 11A- Trial fit the vertical stabilizer into fuselage slot.
12.1 Now apply sufficient epoxy to both sides & the bot-
tom of the vertical stabilizer as illustrated in 12A.
Use 30 minute epoxy to ensure a strong bond and
give yourself plenty of working time.
12.2 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.
FITTING THE VERTICAL STABILIZER
STAGE
11
11B.Mark both sides of the vertical
stabilizer 11C.Carefully cut through the covering 11D.Remove covering from both sides
FITTING THE VERTICAL STABILIZER (Cont.)
STAGE
12
INSTALLING THE LANDING GEAR
STAGE 13
12A.Apply plenty of epoxy 12B.Slide the stab into place
& remove excess epoxy 12C.90 degree angle between the horizontal and vertical stabs.
90o
The STINGER has a tricycle gear con-
figuration (trike gear) using a steerable
nose wheel and main landing gear. Trike
gear is recommended in trainers and
makes it much easier to steer your
model on the ground and to control it
during take off

8
14B.Installation of collars and wheel
to the pre-bent main landing gear
wire.
14C.Insert the main landing gear
wires into the fuselage 14D.Use 4 sheet metal screws and 2 straps to mount the main landing
gears onto the fuselage
Identify the main landing gear components shown below
- 2 pre-bent main landing gear wires
- 2 main wheels 2-7/16” ( 60mm)
- 4 sheet metal screws and 2 straps
- 4 wheel collars
14A.Main landing gear components
14.1 Place one of the wheel collars on the pre-bent main
landing gear wires. Tighten the collar set screw.
14.2 Place one of the main wheels on the pre-bent main
landing gear wires
14.3 Install the second wheel collar on to the pre-bent
main landing gear wires. Leave enough gap to allow
the wheel to rotate freely (see 14B). Tighten the col-
lar set screw.
14.4 Turn over the fuselage, identify the main gear slot.
14.5 Insert the wires into the pre-drilled holes at the ends
of the slot.
14.6 Rotate the wires back and forth and wiggle the wires
down into the holes until the landing gear is just
slightly away from contacting the fuselage. See the
illustration 14C
14.7 Rotate the two main landing gear assemblies so that
they line up with the slot in the fuselage. Press the
wires down firmly into the slot. Tapping with a han-
dle of a screwdriver will help seat the gear wires into
the slot.
14.8 Use 4 metal screws and 2 straps to secure the main
landing gear assemblies into the slot. See illustration
14D
Pre-bent main landing gear wires
Main wheel
Wheel collars
2 Landing gear straps
Metal screws
Main landing
gear wires
Wheel collars
FITTING THE MAIN LANDING GEAR
STAGE
14
Main landing
slot
INSTALLING THE NOSE GEAR
STAGE
15
Identify the nose gear components per illustration 15A:
- 1 pre-bent nose gear wire
- 1 steering arm
- 2 wheel collars
- 1 wheel 2-7/16” ( 60mm)
15A.Nose gear components
Pre-bent nose
gear wire
Wheel
Collars
Steering arm
15B. Follow the instruction steps 14.1, 14.2, 14.3 to install
the wheel and collars to the pre-bent wire

9
16B.Use 4" (100 mm) for fuel line and
2" (50mm) for pressure line 16C.Illustration of fuel line position- ing inside cutaway of the tank 16D.Fuel tank installed into the fuselage
15C.Insert the end of the pre-installed Z-bend wire into
the hole in the steering arm 15D.Place the steering arm into the slot in the nylon nose gear bearing
15E.Insert the nose gear into the bearing, passing
through the steering arm. Secure the steering arm to
the nose gear by tightening the set screw onto the
flat spot on the nose gear wire.
15F. Typical nose gear installation when complete.
FITTING THE FUEL TANK
STAGE
16
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 DUB-222 or similar)
- Cross head Phillips screw driver.
fuel line
pressure line fuel line
pressure line
4” (100mm) for fuel line
16A.Fuel tank & stopper assembly.
2” (50mm) for pressure line
After tank assembly, protect tubes from contamination dur-
ing installation. Apply silicone on both sides of black foam
donut like gasket & around neck. Install tank into the fuse-
lage with tubes facing up.
Press tank with sealant bead firmly against back of firewall
& secure while sealant cures. Seal around neck from front
to prevent oil seepage into fuselage.. Support & surround
tank in compartment with sponge foam.

10
Engines vary quite a bit in sizes, styles and brands but most
have mounting lugs, a carburetor with a throttle (speed) con-
trol arm, a prop washer, a prop nut and a muffler.
The procedure we describe here assumes that you are
mounting a 2-stroke engine that has a side exhaust on the
right (when viewed from behind looking forward) and a throt-
tle control arm on the right.
17A.VMAX 46PRO 2 cycle engine recommended
17C.Remove the muffler, position the engine on the
engine mount and confirm that the fuel tank metal
tubes clear the back of the engine. Trial fit the engine
temporarily into place. Tighten the screws only
enough to tack the engine into place
17B.Use a 4mm socket ball wrench or Allen Key to
remove the 4 black machine screws that work with
the clamping plates on the metal engine mount that
has been pre-installed into your STINGER
Connect to the fuel line
fuel line
INSTALL ENGINE
STAGE
17
CONNECTING THE THROTTLE CONTROL ROD TO THE ENGINE.
STAGE
18
18B.Throttle control rod connected to the engine throttle arm and to the
servo arm
18A Clevis attached to engine
throttle arm
CONNECTING THE FUEL & PRESSURE LINES
STAGE
19
19A.Fuel line connected to the carbu-
retor and pressure line connect-
ed to the muffler.
19.1 Install the muffler then connect the fuel tubing from the tank metal pres-
sure lines to the muffler
19.2 Connect the fuel tubing from the tank metal fuel line to the carburetor
19.3 Double check that you have the metal fuel line from the tank connect-
ed to the carburetor and that the metal pressure line from the tank to
the muffler.

11
22A. Universal
servo tray
20.1 Consult your engine manual and select a suitable propeller.
20.2 Install the thrust washer, the spinner backing plate, the propeller, the
prop washer, and the prop nut. Ensure that they are all firmly attached.
20.3 Trial fit the spinner cone and spinner cone retaining screws. If neces-
sary enlarge the cutouts in the spinner cone to allow adequate clear-
ance for the propeller. The spinner should not touch the edges of the
propeller.
20.4 Double check that the spinner cone retaining screws are firmly
attached. 20A.The spinner and propeller
attached to the engine.
21.1 The elevator control horn is
installed through the elevator
and protrudes from the bottom
of the elevator as shown in 21B
and 21C. Pierce the covering
over the pre-drilled hole and
install the control horns as
shown. 21A- Control horn assembly 21B.Typical control horn mounted to
the surface control
INSTALL THE PROPELLER AND THE SPINNER
STAGE
20
FITTING ELEVATOR AND RUDDER CONTROL HORN
STAGE
21
21C.Elevator control horn location 21D.Rudder control horn location
Elevator control horn
location
Rudder control
horn location
INSTALLING THE SERVOS
STAGE
22
22.1 Install the rubber servo grommets & brass ferrules supplied
with your radio equipment. The three servos that control the
elevator, rudder and throttle are to be installed in the servo
tray mounted in the fuselage. Remove the servo tray from
the fuselage, mounting the servos to the servo tray as
shown.
22B.Note the orientation and positions of the three
servos in the servo tray 22C.Throttle, rudder and elevator servos
connected to their push rods as referenced
left to right.
Throttle
servo
Elevator
servo
Rudder
servo
NOSE
TAIL

12
Consult illustrations 22C &
23A-C showing how the
throttle, rudder and elevator
servos are positioned and
connected to the pushrods.
CONNECTING THE PUSHRODS TO THE THROTTLE,
RUDDER AND ELEVATOR SERVOS
STAGE
23
23B.Pre-installed elevator,
throttle and rudder pushrod
NOSE
TAIL
23B.Center the servos, control surfaces & throttle
(carb) then connect the control rods to the servos.
Elevator pushrod
Elevator pushrodThrottle pushrod
Nose gear pushrod
Rudder pushrod
NOSE TAIL
Connect the elevator servo to the receiver and turn on your
transmitter. Confirm that the neutral positions of the elevator servo are sustained as per illustration 23C
24A.Elevator control horn shown in
position 24B.Loosen the set screw to connect the elevator pushrod to the elevator con- trol horn, align the elevator surface so that it is level with the plane of the
horizontal stabilizer, then tighten set screw securely.
CONNECTING THE PUSHRODS TO THE ELEVATOR
STAGE
24
CONNECTING THE PUSHRODS TO THE RUDDER
STAGE
25
CONNECTING THE THROTTLE CONTROL
STAGE
26
Connect the rudder servo to the receiver & turn on
your transmitter. Confirm that the neutral position of
rudder servo is sustained as per illustration 23C
25A.The rudder pushrod is connected to the rudder
control horn
With the throttle control arm clevis connected to the engine throttle arm,
move the throttle arm to roughly half throttle. Look into the throat of the
engine carburetor as you rotate the throttle arm and select a position
where the throttle opening is about haft what it is when fully open.
26A.Throttle control rod connected to the engine throttle arm and to the
servo arm
Connected to the engine throttle arm engine throttle arm
engine throttle arm
26B- Throttle control rod con-
nected to the engine throttle arm

13
Adjust the deflection of the control surfaces to match the
specifications on page 15. You can reduce the amount of
throw by doing either or both of the following:
- From the servo end, move the clevis or EZ connector to a
hole in the servo arm that is closer to the servo output shaft.
- From the control horn end, move the horn out further on
the threaded bolts. Always confirm that the horn is still
thoroughly engaged with the threaded bolt after you have
adjusted it.
ADJUST CONTROL SURFACE THROW LIMITS
STAGE
27
FINAL RC SET-UP
STAGE 28
Before starting the final set-up of the model, switch
on the radio and ensure that all trims are in their
neutral positions. Check that the ailerons, elevator
and rudder are centered. If any adjustments are
needed, do these by uncoupling the relevant clevis
and turning it clockwise to shorten the linkage or
counter - clockwise to lengthen it. Only when each
control surface has been centered mechanically in
this way should you begin adjusting the surface
movement (or throw)
Now confirm that the control surfaces are moving in
the correct direction. Use the servo reversing
switches on your transmitter to reverse the direc-
tion of a servo if necessary. The most popular
transmitter mode (with the throttle on the left, with
ailerons and elevator on the right) is shown here.
29.1 Consult your radio manual for instructions about
hooking up your receiver battery, receiver and
switch harness.
29.2 Wrap the battery pack securely in foam suitable for
RC equipment and wrap the foam insulated pack in
a plastic bag or cling wrap. Position the battery pack
under the fuel tank or nearby.
29.3 Thread the battery pack connector back through
from beneath the fuel tank to the radio compartment
by passing the battery connector through an open-
ing beside or beneath the fuel tank.
29.4 Connect the battery connector to your radio system
according to the radio manual.
INSTALLING THE RECEIVER BATTERY
STAGE 29

14
INSTALLING THE RECEIVER
STAGE
30
CONFIRM RADIO OPERATION
STAGE
31
BALANCING THE AIRCRAFT
STAGE
32
CONFIRM MECHANICAL INTEGRITY
STAGE
33
30.1 Consult your radio manual for instructions about
hooking up your receiver.
30.2 Plan where you are going to put the receiver with
consideration for routing the antenna safely.
30.3 Wrap the receiver securely in foam suitable for RC
equipment and wrap the foam insulated receiver in a
plastic bag or cling wrap.
30.4 Generally in the absence of specific instructions
from the radio manufacturer, it is recommended that
the receiver should be placed where it is least likely
to have impact during a crash. Keep the battery pack
and other heavy loose items ahead of the receiver.
31.1 Consult your radio manual for instructions about
testing and operating your radio system.
31.2 Pay particular attention to charging your radio sys-
tem batteries and range testing the system before
and after each flight.
31.3 Check that all controls are working correctly before
and after each flight.
32.1 The CG for your STINGER is located at 3-1/8“ to 3-
3/8" (80 - 85 mm) back from the leading edge of the
wing when the wing has been attached to the fuse-
lage as per illustration 34A.
32.2 For the initial flight, the CG should be located at 3
1/8” (80mm) back from the leading edge of the wing
when the wing has been attached to the fuselage.
32.3 The CG is measured with the engine, radio gear and
all other components installed but WITH NO FUEL
IN THE TANK.
32.4 Set up the CG as it will be when you fly it BUT WITH
NO FUEL IN THE TANK.
32.5 It is very important to have the CG correct. Flying
your model with the CG too far will likely lead to loss
of control and a crash. If you discover that after you
have assembled your model and installed your radio
and engine that the CG of your model is incorrect
you must bring the CG to the correct location by
doing the following BEFORE FLYING :
- Move the battery pack fore or aft.
- Move other components fore or aft.
- Change engine to a lighter or heavier model.
- Add weight to the nose or tail. If adding it to the nose, try
to make it useful by going to a heavier duty engine or
adding a spinner with a heavy metal backing plate. As a
last resort, add stick on “dead” weight where appropriate.
33.1 Once you have confirmed that the CG is correct, you
should do a thorough review of the entire model
before your first flight. Check everything twice! Every
hook up, every coupling, everything! Do it twice!!
33.2 Before your first flight, have an experienced flyer
review your work. Do not fly your model until it has
been checked out by a third party who knows how to
fly and how to set up a model aircraft. Do not fly
alone. Seek experienced help.
33.3 Once you have completed your first flight, get in the
habit of checking your model over before and after each
flight! Don’t fly if you find something that is not right!
80 ~ 85 mm
in.
34A.CG location

15
CONTROL SURFACE THROW SPECIFICATIONS:
The throws are measured at the widest part of the control
surface. Adjust the position of the pushrods at the control
and/or servo horns to control the amount of throw. You may
also use ATV's if you radio has them but the mechanical
linkages should still be set so that theATV's are near 100%
for best servo resolution.
1/3" - 1/2"
8mm - 12mm
1/3" - 1/2"
8mm - 12mm
1/4" - 3/8"
6mm - 9mm
1/4" - 3/8"
6mm - 9mm
5/8" - 1"
16mm - 25mm
5/8" - 1"
16mm - 25mm
Elevator Aileron Rudder
Parts for this VMAR Model
In the event that you require replacement parts for your
VMAR - STINGER 40-52 ARF, you can order parts from
your retailer or from the VMAR On - line store at:
www.richmondrc.com/support.htm.
For aftermarket parts and other information related to this
model see the VMAR On - Line store at
www.richmondrc.com/support.htm
Low rate High rate
ELEVATOR 1/3 “ (8mm) up 1/2” (12 mm) up
1/3 “ (8mm) down 1/2” (12 mm) down
AILERON 1/4” (6 mm) up 3/8” (9 mm) up
1/4” (6 mm) down 3/8” (9 mm) down
RUDDER 5/8 “ (16 mm) right 1” (25 mm) right
5/8 “ (16 mm) left 1” (25 mm) left
THE STINGER ON FLOAT
ALL THE HARDPOINT FOR MOUNTING THE VMAR FLOATARE PRE-INSTALL IN THE MODELAND LABELED
THE PART NUMBER PREFERENCE:
F32W07 - White Float (For Apache, Discovery, Chalenger, Hornet & Stinger)
F32Y07 - Yellow float (For Apache, Discovery, Chalenger, Hornet & Stinger)
F32W07B - White Float for Vmar Beaver .40 ~ .60 (Va.101H0462)
F32Y07B - Yellow Float for Vmar Beaver .40 ~ .60 (Va.101H0461)

16
Note
VMAR, POLYCOTE and VMAX are Trademarks of VMAR Manufacturing Inc. and appointed VMAR agents worldwide.
Copyright VMAR Manufacturing Inc - 20040530