MULTIPLEX modell DG 300 Elan

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using a

tape with absolutely

straight

edges.

Lightly sand

the edge

painted,

again using

400

grade

abrasive

paper.

Paint

the edge' and

remove

the tape when

the

paint

dry.

The same

procedure

is followed

l0r all other

painted

areas of decoration

on lhe

m0del.

The

wings and

tail surfaces can

either be

tissue-covered

or covered

with iron-on

film. Before

covering,

rub down

the wings and

tail

surtaces

completely

smooth, and

fill any

irregularities.

Use

400-

grade

abrasive

paper

lor final rubbing down.

Remove

all traces

sanding

dust

with a brush.

Film covefing

lf the

wings and tail surfaces

are to be covered

with iron-on

film, then

the wooden surfaces

must not be

primed

or sealed

beforehand.

AII

surfaces

to come

into

contact

with the

film

should

rubbed down

with 400-grade abrasive

paper,

and

all traces ol sanding

dust

removed.

Apply the

lilm following the instructions

supplied

with the

material.

The

pronounced

undercamber'ol

the wing section

means

that special attention

must be

paid

to the underside

0f the

wings.

Warm up

the film with a

heat

gun,

and

rub the lilm down on

the wo0d

while still

hot, using

soft

woollen cloth.

Start in the

middle of the

undercambered

portion

and

work outwards.

When applying lilm, bear

in mind

that the

foam core under

the

skin

can be damaged

if the

lemDerature

rises

above

about 60'C,

so do not

leave the iron in one

position

for too long.

Attaching the

ailelons and elevalol

When

the wings, ailerons, elevator

and tailplane

have been completed

and covered,

the ailerons

and elevator can

permanently

attached

using

adhesive

tape.

Ailerons:

Fold the aileron

right up,

with the

pushrod

disconnected

lrom

the

horn. In

this

position

the aileron

will rest

inverted llat 0n

the top

surface

the wing. Check

that the aileron

is exactly central

in its

recess, and

apply a strip

of hinge tape along

the

inside of the

wing/aileron

joint.

Cut oll

lhe excess. Take care

that there

is no

gap

between

aileron

and wing.

Now swing

the aileron down

into its

normal

position,

and check

that it

moves

freely up and

down. lilove

the aileron down

to its bottom

position,

taking

care not to unstick

the tape on

the inside of

the hinge

line. Now apply

a second strip

ol tape along

the top of

the wing, taking

care

that the dividing

line between

wing and aileron

is exactly central

along

the length of

the tape.

lf the aileron

now moved right up

and down several

times,

the two

strips

0f tape

\l\,ill

join

in the

middle, torming a

perfectly

sealed ailer0n

hinge. The one

pre-requisite

for this,

however, is that

you

have

followed

the building

instructions

religiously, and

that the mating

edges

ol wing and aileron

are

perfectly

sharp and straight.

Connect

the

threaded

pushrod

and

glue

the

pushrod

guide

46 into

the

slot

in the

wing. Apply one

small drop of

5-minute epoxy

t0 the bent

end of the

aileron

0ushrod

t0 secure

it.

Attach

the elevator

to the tailolane

in a similar

manner, using adhesive

tape

as the

hinge.

Applying

lhe tlanslets

Please

follow the instructions

su0olied

with the transfers.

Installing

the conllol

system

The bowden

cable outers

already in

place

in the fuselage

usually

have

to be shortened

the cockpit end.

you

reler

to the

plan,

you

will see

that they

have t0 reach as

far as the

main former

10.

Cut

through

the

bowden

cables

with a sharp

knile.

Drill 3

m.m. 0 holes

where marked

in the bowden cable

supports

and

thread the suoDorts

onto

the bowden cable

outers.

Fix the servos

the fuselage.

Screw the

quicklinks

about

half-way

0nt0 the

threaded

portion

the threaded couplers

21. Connect

the

quicklinks

the servo output

discs,

relerring t0 the drawing

for

the correct

take-ofl

points.

The

rudder linkage

is completed

tirst. Set

the

rudder and

the rudder

servo

to neutral.

Mark the correct

length

0f the

rudder

pushrod

with a

felt-tip

pen;

snip off

the steel

rod, and de-burr

the cut

end.

Roughen

up the end

of the steel

wire, bend

into a slight

"S"

shape

and oush

it into

the threaded

coupler.

Check again

that

the rod is the

correct

length.

Disconnect

the

quicklink,

unscrew

the

threaded coup-

ler and solder

it to

the steel

rod. When soldering,

cover

the servos

with

a cloth

paper

protect

them.

Fit the

quicklink

again,

and connect

it to the servo

output

disc The

bowden

cable

support

11 can now be

glued

to the mdn

former

'10.

Check

that the bowden

cable has as

straight

a run as

possible

Add

further scrap

wood support

between

the outer

tube and

the

fuselage

side.

The elevator

linkage

is made up

next.

Repeat the

procedure

used

lor

the rudder,

not forgetting

the additional

scrap

wood support.

Check

the neutral

position

the control surfaces,

the control surface

throws,

and

their lreedom

movement. Check

that the surtaces

move

in the

correct

sense.

The connections

t0 the aileron

and airbrake

servos are

completed

in a

similar

manner.

Check again

that the

control surface

movements

are

as stated.

The linkages

to all

the control surlaces,

and

especially

that to the

airbrakes.

should

now be checked

and adjusted

to ensure

that

each

case the servo

is able

to move

to its

tull

extent

without being

mechanically

obstructed

at either end-poinl

Stalled

servos

consume

a very

high current,

and thus

flatten the

receiver battery

very

quickly.

The receiver battery

is fitted

into the extreme

nose, and

packed

round

with loam

rubber. The battery

should

have a capacity

of around

1200

mAh.

The receiver

is lixed

to the servo

plate

with double-sided

foam tape

(servo

tape).

The receiver

aerial can

be routed outside

the fuselage

(not

forgelting

some

form of strain

relief), or alternatively

stretched

out inside

the

luselage.

In the latter

case slide

the aerial

into a

plastic

tube

(such

bowden

cable oute0,

and

leave this

tube l00se

in the fuselage 0n

account

use a

metal

tube. The aerial

tube is

not included

in the kit

Mount

the 0N/0FF

switch

inside the fuselage

the

servo

plate

9. The

canopy

is removed

to switch

the system

0n or off.

Balancing

Before

the lirst

llight of the

DG 300

the Centre of

Gravity must

checked

and

corrected. Slight

constructional

inaccuracies,

which are

unavoidable

model building, can

lead

to the Centre

of Gravity

marked on

the

plan

not being exactly

correct.

For

this reason the

model

is initially balanced

at an average

position,

which

will

always

be adequate

for test-flying

the model.

The optimum

position

for

your

particular

model

is then established

during

the

test-flying

procedure.

Even a

very

slight

variation in

the wing sweep

angle

will alter

the CG

position.

The average

position

lor

the DG

300 coincides

with

the wing

ioiner

blade

location.

Mark the CG

Dosition

on the underside

the wing

root, using a

felt-tip

pen.

The

model must be

fully equipped

with

its R/C equipment

prior

to balanc-

ing; do not

for-get the canopy.

The model

can simply

be balanced

the fingertips;

this is

quite

accurate

enough

initially.

Add lead ballast

to the

nose of the

luselage

until the

model

hangs horizontal,

with

the nose

inclined slightly

downward.

Depending on construction

and B/C equipment

used,

you

may

need to add

100 to 300

lead. Secure

the ballast

with foam

rubber, but do

not

glue

it in

place yet.

Flying wilh ballast

Two ballast

chambers

are

incorporated

into the

wings,

which can

accept ballast

in the

form of lead

rods

(Order

N0.71

2760)

MULTIPLEX modell DG 300 Elan - Page 32