User Manual

The
basic
requirement
for
this
form
of
hinge is that the
trailing
edge of the
wing
and the
leading edge of the aileron
were left with a straight, sharp edge, as described
in
the
building
inslructions.
Connect the threaded Dushrod tothe aileron
horn and check
the aileron
movement. Apply a small blob ol5-minute epoxy
to the end ol lhe Dushrod
to secure
it.
Applying lhe transfers
Cut the tra;sfer out
of the
sheet, cutting about
1mm
outside
the outline.
Do not remove
lhe backing
lilm
at this stage.
Lay lhe transfer on the
model
and establish the correct
position.
lf
possible,
mark the
position
on the model
(the
marks
musl
be
removable later).
Remove a strip of backing
film
about
10 mm wide from
the
back of the transfer on the
right
or
left-hand
side. Leavethe
rest
ol the backing
film in
place.
Position
the transfer on the
model
again, and
press
the exposed
parl
of lhe transler
down.
Fold
back lhe transfer,
peelofl
the
resl
oflhe backing
film
and
press
the lransfer down.
Try
to avoid trapping air
_/ubbles;
it is always best to work
oulward
lrom
the centre.
Take
care
not
to dislort the transler.
This melhod
cannot
be
used
with larger
lransfers; lhey are
applied as
lollows:
add a
lew
drops of
liquid
detergent to a
bowl of
water,
and
moisten
the model with the water.
Remove
the backing
lilm
entirely and
place
the transler on
the
wet
surface.
The water inhibits
the adhesive, and
you
will lind it
possible
to slide the transfer about without
difficulty. When
you
have
positioned
it
conectly,
press
down
gently
and evenly. Thefilmof water underlhe
transfer
will
diffuse away after one ortwo days, and the adhesive
will
then
stick in the normal way.
Please note
the
golden
rule: the base surface
must
be
smooth, and
lree
ol
grease
and dust.
Balancing
!ou(
DG
500/22
EI-ÄÄl must
be balanced at the
marked
-Centre
of Gravity before
you
attempt
a
flight. Minor inaccu-
racies
in
conslruction,
which
are unavoidable
in modelling,
may result in the CG
position
ohown
not being exactly
correcl;
even a
very
small dilference
in wing
sweep angle
will atfect the CG
position
noticeably.
Forlhis reason the modelis initially balanced at an average
CG
posilion,
which will in
allcases be
good
enough
lortest
f lights.
The ideal
CG
position
can then be established
lor
yourparticular
modeldu ring
test-flying.
This average
CG
for
lhe DG 500/22 ELÄ^J
is
about 85
mm
aft of the
wing root
leading
edge.
i,4ark the CG on the underside of the
wing
roots using a
lelt-
tip
pen.
Fit
out the
model
complelely,
including radio
equip-
ment, canopy and tail surfaces.
The model can simply be balanced on
your
fingertips;
this
is
quite
accurate enough
forthe initial
average
CG
position.
Add
lead
ballast lo the
fuselage nose
until
the model
balances
with
the
nose inclined
slightly downward.
You will
need
between
100 and 300
grams
of
lead,
depending on
your
methods of construction and
finishing
and
the lype ot
radio installed. Please be sure to securethe ballasl
wellwith
screws or epoxy.
Teshf lying
The
salest
method
of
Iaunching forthe firsl
llight is
an aero-
tow.
but the slope and lhe
winch
are excellent
alternatives.
Swilch
the receiving system on and carry oul a check ol all
the control systems. Check once
more
thal
the control
surlaces
move in the correcl direction corresponding to
stick
movement.
Carry out a
range
check
of
your
radio
system.
Hold
the
model
at shoulder
level
and run
fast,
directly
inlo
the
wind. lf
you
now let
go
ot lhe
model
and catch
it
again
almost
immediately,
you
willget
an
idea
ollhe model's basic
trim: it should
stay
roughly where
you
left it
-
no
sudden
changes
in
direction.
Don't
lhrow the
model!
For
a
winch launch it is
best
it
an assistant holds the
model
steady,
concentratingonkeepingthewingslevel. Ityou
are
attempling a
rise-off-ground
takeoff
lrom
a
grass
strip,
it is
essential that the
grass
is mown really
short.
Give lhe signal lo
release
the
model
as soon as there
is
sufficient tension on the line
-
nol
loo
much, not
loo
little.
lmmediately
afler
leaving
lhe
ground
the
model is in
the
mosl
dangerous
phase
oflhe launch. lf the modelis allowed
to climb away
steeply
from
the
ground,
a slall
is very likely.
The model will
drop one
wing
and can only be
recovered
by
applying down elevator and opposite rudder at once.
lf
this
should
happen, it is vital
that the
winch
operator should not
reduce
the
line
tension, as this would rob the model
of
the
energy
lora
change
in
direction.
To
avoid the
problem
in
the
f irst
place,
never
pullthe
modelup
steeply
immediately
after
lift-oll,
but
wait
a
lew moments
until il has achieved llying
speed, even applying a little
down-elevator
if necessary.
This is also
important
for
a second
reason: if
you
should
sufler a
line
break al this stage of the launch
you
risk
a total
loss. Once lhe model is in a
stable
condition,lhe
climb can
be mntinued; apply slighl up-elevator to
maximise launch
height.
The winch
operator should
watch
the degree ot
flex in
the
wings
during lhe
whole
ol the winch launch, as this is an
accurate
indicator
ol lhe
load
on the
model,
and tells
him
whetherto
apply
more
or
less
power
(or
switch lo a dilferent
setling).
Atter releasing lhe low, trim the model tor accurate straighl
flight, with
the
luselage
pointing
in
exactly the same direc-
tion as the direction ot
flight
-
either
into wind
ordownwind.
This is
of
great
importance if
you
wish
lo
obtain maximum
performance
from
your
model.
An aircraft
which is
con-
stantly
yawing
can
never
gives
its
best
pertormance,
owing
lo
increased luselage drag and the angled airtlow over lhe
wings.
Now fly a
few full
circles, if
possible
in both directions, and
observe
howthecontrol
surfaces
respond. lt isworth
saying
here that allpilots develop theirown
ideas
ol
how
an aircraft
should
respond,
and
we
can only
give general
advice
here.
lfyou
find
one conlroloperates loo sharply orloo sluggishly,
eliminale the
problem
al once by
reconnecting
lhe
linkage
at
the
servo output arm. ll makes
no
sense at all lo
tly
a
model lor
a
long
period
with
unbalanced conlrol
responses.
Do not be satisfied
with
reducing the servo lhrows at the
lransmitter, as lhis denies
you
the benefits of full servo
movemenl. Equally, do not alterthe settings onceyou
have
established a
good
combination. Once the clevises
have
been adjusted
to
your
satisfaction,
lock them with locknuts,
contacl cemenl or silicone adhesive
lo
orevenl lhem shit
Irng.
I