Vmar Stinger Istruzioni per l'installazione e il funzionamento

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.

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

Center line

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

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

WING ASSEMBLY - JOINING THE WING HALVES (Cont.)

STAGE

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.

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

INSTALLING THE AILERON CONTROL SYSTEM

STAGE

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

ALIGNMENT OF HORIZONTAL STABILIZER

STAGE

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

INSTALLING THE HORIZONTAL STABILIZER (Cont.)

STAGE

THE HORIZONTAL STABILIZER (Cont.)

STAGE

10B.Apply plenty of epoxy 10C.Slide the horizontal stabilizer in

place 10D.Wipe off excess epoxy

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

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

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

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

Main landing

slot

INSTALLING THE NOSE GEAR

STAGE

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

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

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.

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

CONNECTING THE THROTTLE CONTROL ROD TO THE ENGINE.

STAGE

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

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.

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