User Manual

Apply tape
to the
wing root
lairing on
the
luselage. to
avoid
excess
resin soiling
it,
and
cut
through
the
joiner
blade
slots
Tape
over lhe
wing
root
surface
also and
cut
lhrougn
as
before.
Assemble
the
wings,
blades,
locating
pegs
and
luselage
"dry"
-
i.e. without
glue
-
,first,
to
check alignment
It is essentialto
use
a slow-setting,
high-strength
epoxy
for
bonding
the
joiner
blades
into
lhe
wings, such
as UHU
plus
or MULTIPOXY.
On
no
accounl
use S'minute
epoxyl
Bevel
the end
of the
blade box
with a
knile, to
form a dished
entry;this
will help
you
in
lilling the box
with resin.
Hold lhe
wing standing
vertically
on
its
tip,
pour
a
generous
quantity
ol epoxy
into the blade
box and
the
locating
peg
sockel
and
distribute
lhe
resin
evenly
round the
inside. using
a
lenglh
of
melal
rod. lf the
glue
is too
viscous,
warm
it with a
heat
gun.
Allow any
air bubbles
to
rise and
disperse,
then
refili
the box.
Apply
resin to the
joiner
blade
and lhe
locating
peg
also,
as
{ar as the
marked
points,
and slide
them
into the
wing
root. Remove
excess
resin immediateiy
-
there
must
be
no traces
of epoxy
on the
projecting
ends
of the
wing
blade
and
locating
peg.
Slide lhe
wing onto the
fuselage as
far
as
it will
go,
and
line up the
wing with the
root
fairing.
Apply lape
over
the
joint
to
lix the
two components
togelher.
The
model
is now left standing
on the
wing tip,
{uselage
uDpermost,
untilthe
resin
hascured. Check
at
intervals
that
lhe
wing surfaces
are still
correclly
aligned
with
the
root
fairing.
This
is
of
great
importance to
the
model's eventual
performance
and
handling.
When the
resin has cured,
reoeat the
procedure
with
the
second
wing
panel
Installing
ballast
tubes
Two ballast
tubes
(Order
No.
71 2762\ can be
inslalled
in
the
wings.
Matching
lead
rods are available
(
Order
No
71 2760).
Seal
one end
of each
ballast tube
by
gluing
small
wooden
discs
into the lhe
end.
Apply epoxy
to the
tubes and
push
them
into
the
wing roots,
llush
with
the
end.
The basic
rule
of
flying
with ballast
is as
lollows:when
you
add
ballast
lhe
values
lor best
glide
angle,
in
particular,
are
shifted
to
higher speeds.
By adding
ballast the
model's
basic
cruising
speed
is increased,
at the
expense
of an
inlerior
minimum sink
rate,
and a slightly
higher
minimum
flying
speed.
At
high
speed
the
heavier
model
has a dislinct
advantage
over
the
lighter one.
In
practice
this
means:
lly
the
model with ballast
in
strong
winds, and
lor high-speed
and distance
flying.
In calm
weather,
light slope
winds, and
when lhermal
activity
is
slight
or
non-existent,
lly
the
model without
ballast
The
lead rodsshould
be
painted
orwrapped
in
thin
adhesive
tape,
to avoid
direct
skin contacl.
Installing
the
rool facing
ribs
Drill
3 mm diameter
holes
for the bowden
cables
and
the
locating
peg
52
and cut
the slot
lor
lhe
wing
ioiner
blade
in
the
root facing
rib 59.
Depending
on lhe
radio installation,
it may be
necessary
tor
the
threaded
couplers
and
clevises
on the
aileron
and
airbrake
pushrods
to be
able to
move
inside the
wing
roots;
in
lhis
case enlarge
lhe
holes to suit
and
shorten
the
bowden
cable
oulers
slightly
The
root
ribs
17
are
die-cut
about
1mm oversize.
Apply
smallpieces
of double-sided
tape
to both
ribs and
stickthem
to
the
luselage
root lairings
in the correct
position
The
leading edges
ol
lhe
DG 500/22
ELAN
wings
should
lorm a
perfectly
straighl
Iine, at
right-angles
to the
luselage
centreline.
Before attaching
the
root ribs
il is
vitalto check
this,
as the
installation of
the
various
ply
components
in
lhe
fuselage
might have
distorted
the
moulding slightly
PIug
in the
wings, sight along
the
wing
leading edges
lrom
tip
to tip,
and check
that they
form a straight
line.
Attach a
lenglh
ol thread
to the
lront edge
ol the
lin
and and
stretcl'
it to each
wingtip
in turn.
The distance
musl
be
the same
lo:
bolh
sides.
lf
you
find a discrepancy,
glue
small
pieces
o{
scrap
wood to the
appropriate
root rib to correct
Any
gap
caused
in this
way
is filled in the
next stage
Carefully
mask olf
the
wing
root
andthe
root tairing,lo
avoid
excess
resin soiling
the surfaces.
Thickena
mix
ol5-minule
epoxy, and
apply
the resin allover
the
surface
of the
root
facing rib, taking
care 10
avoid
glue
entering
the
bowden
cables.
Pluq
in lhe wing and
press
ii
home f
irmly. Remove excess
resin at once.
Allow the
glueC
joint
to
harden completely
(at
least two
hours). Don't be
tempted
to
remove lhe
wings
loo soon.
Prise olf
the
wing,
sliding
a thin,
sharp
knite between
root rib and
luselage
il
-
necessary.
Do not use
lorce!
Repeat
with the other
wing,
then
sand
back the
root ribs lo
tollow the contour
ol
the
wing,
checking
continually
lhat the
fit
to
the
luselage
is
stillaccurale.
Fillany
gaps
which remain
and
sand lhe
liller
back
flush.
llyou
have followed
these
inslructions
lo the
letter,
you
now
have a
wing
-
luselage
transilion
which
is neatand
accurate.
This
is importanttolhe
model's
llight characteristics
as
well
as lo
rts appearance.
The
wing manufacluring
process
can
result
in slighl depres-
sionsforming
over the
top and bottom
stub
spars
at the
wing
root.
Normally the
depression
is
invisible, bul
it might befelt
by
running
your
hand
overlhe
wing surtace.
lf
you
find such
a depression,
apply
liller and sand
back to
the correct
contour.
Take care
not lo sand
into
the
wing skins,
as this
would seriously
weaken lhe
structure.
Compression
strut
In an abrupt
landing,
the
wings
willtend to swing
forlvard and
crush
the
luselage
between
the
leading edges.
The com-
pression
strut
13 avoids this
danger.
lt
is installed between
the
leading edges
in
the
wing
root
lairing, and can
be
removed al any
time.
Cut an
8
mm diameter
hole
in bolh
root fairings
where
marked.
ll is besl lo drill
the
holes oul
to 7
mm diameter
in
stages,
and then
to
lile them out
carelully
untilthe
strut
is
a
tight
lit,
otherwise
there
is
a
good
chance
that
it will
lall
out'
and
you
willlose
it. Cut the
compression
strut
to
length, and
checklhat
it lies exactlytlush
withtheoutside
sudace
ofthe
root lairings.
lt
must not
projecl
on either
side.
Towhook
The towhook
11 is
localed
40 mm aft of
the
wing
leading
edge.
To
establish
this
point,
set the
luselage on
a
llat
surface
and
use
a setsquare
to lransler
the
point
of the
leading edge
down
lo the building
board.
24