Multiplex DG-600 - Page 16

The
next
stage
-
rounding
off
the
rudder
leading
edge
-
must
be
cärrGd
out
üittr
particulai
care,
as
the
tit of the
rudderto
the
fin
"-ärü,riiiö
tt'ä
äppearance
of the
whole
tailgroup
Keep
strictly
to the
cross
-
sections
shown,
and
check
the
tit contlnualry
oy
äjf"iino
tn"
ruoier
up to
the
tin The
edges
of
the
top-and
bot-
tom
bl6cks
are
only
rounded
ofi slightly,
as
on
the
tull- slze'
Sand
down
the
trailing
edge
to
an even
maximum
thlcKness
oI
1mm.
irlä ruOo"t
ttinqe
plate positions
are
now transferred
to
the
rud-
oäi
ro oo
tttis,'indert
the
plates
42 in
the
fin
post,
wedging
them
it necessarv.
Pbsition
the
rudder
accurately,
and
press
it against
iirä-olat"l.1tte
small
dents
which
result
are
your
markers
for
cuttinq
the
hinge
slots.
Äämoie
ttre
piüot
rod
44 and cut
a
horizontal
slot
across
the
iudOär
teading
edge
at the
two
marked
points,
using
a thin
hacksaw
blade.
File
outthe
slotstoawidth
ol4
mm usrng
a smarl
näääi"
iirc-rt'e
stots
must
be deep
enough
to cut
right.through
the oivot
tube,
but
do
not cut
into the
wood
behind
the
tube'
inie'.t
tne
pivoi
rod
44
in the
rudder'
and
thread
it through
the
iuääerninöe
ptates.
Fit the
rudder
complete
with
hinges
into the
fin. check
ior
fit, and
trim
the
plate
slots
if necessary'
inLiuOOer
must
be installed
central
to
the
fin To
ensure
that
itrii
iJttre case,
tit a thin
strip
of card
between
the
fin and
rudder
än Uott'
sioes.
the
rudder
must
be not
be
pushed
in to
the
point
wnää
it tannot
Oeflect
to either
side.
Apply 5
-
minute
epoxy
to
the
rudder
hinge
plates
and
plug
them
in
as already
descrlDeo'
wh"niträ
epoiy
t'as set,
applf
more epoxy
to the
joints
lrom
'
h
sioe
ad faräs
you
can
reach.
The
rudder
must
have
at
least
3o'deqrees
free
movement
to
both
sides
öutlnä
piuot
,oo
ttush and
glue
the
rudder
bottom
block
47 and
rn" iäräinO",
of the
strip
22
to the
rudder
tip.
Sand
the
front
iäie
ftusn.
The
rudder
can
be
removed
by
pressing
out the
snap
oivots.
SiioeJne
steet
pushrod
40 into
the
rudder
bowden
cable
outer
änO
marx
wnerä
it crosses
the
rudder.
Cut
a slot
forthe
rudder
noin
ig
f
UoteO
1.3
mm diameter),
and
remove
a
little.
foam
around the
slot.
The
horn
is installed
almost
within
the
thicKness
oi tfre
ruoOer.
Squeeze
plenty
of 5
-
minute
epoxy
into
the.slot
änd oush
the
ho;n
into
place,
checking
that
it does
not
foulthe
fuseiaoe side.
Bend
the
final
10
mm of
the
rudder
pushroo
aI
ib-tr1äÄgr"s,
and connect
it to the
rudder horn
The connection
is ouite
secure
as
n
ls.
Tailplane
Diviie
the
leading
edge
29
in half,
and
glue
one strip
to
the
tail-
olane. Sand
the
leading
edge
to
follow
the sweep
of the
panel
on
irrä ätnei
sioe,
uno
slie
thä second
half
oI the
leading
edge
in
olace.
This
results
in a
scarf
.ioint
at the
centre'
hornO ot
tne
leading
edge
as
shown
in the
drawing
and
sand
thc ends
flush
at the
tips.
i
rt'Jiio
uiocr
g0
in
half,
and
glue
the
two
tips
in
place'
sand
ttrdtios
to
the
shape
shown
in the
drawing'
ö;;äa;-th"
elevätor
bv continuing
the
machined
slot
out
thr;uqh
the
tios.
Sand
the cut
edges
of the
tailplane
and
eleva-
tor
flu;sh
with
the
machined
edges'
using
a- long
tlat
sanolng
block.
to
ensure
that
the
pivot
lines
are
pertectly
stralgnl
..
seal off
the
rear edge
of the
tailplane
and the
lront edge
or
tne
elevator
with
the
sealing
strips
31
öärio
o""t
the
edges
oithe
sealing
strips
until
thev.are
flush'
takinq
care
to
leave
the
top edge
of
the sealing
strlp
-
laterro
oe
it'ä trinää
rine ot ttre
elevaior
-
sharp
There
must
be no
radius
at
this Doint.
otherwise
the elevator
will not
be able
to
move
lreery'
ön"ii
inäi
tt'" elevator
is
an accurate
fit against
the
tailplane
äno
ianA
back
if necessary'
Sand
the trailing
edge
down
to
a
maximum
thickness
ot
1 mm.
Cui
itri
recess
in
the centre
ol the
elevator
to clear
the
rudder'
iJiÄownin
ttre
Orawing,
and
sealthe
cut
edge
with
scrap
balsa
Säno
tt'e
sealing
piece
flush
with the
surface
ot the
elevator
when
the
glue
is hard.
ö"iä i.ärisrot
centrallv
in
the elevator
to
accept
the
horn
28
lt
GäsiÄntialthat
the
horn
be
glued
in
place
very securely'
to en-
sure
that
the
servo
Iorce
is transmitted
efficiently
to
the
eleva-
ioi.
nemove
a
tittte
toam
on either
side
of the
horn
and
glue.it in
bräi"-u"ing
plenty
of
5-minute
epoxy
The
horn
must
face
backwards.
The
next
stage
is
to
mount the
tailplane
on
the
Jin
.
-. .
.,
Mark
the
oosition
of the
tailplane
fixing
screw
on
the
lln
l ne lalF
plane
is correctly
positioned
when
its rear
bottom
edge
ls In
llne
with
the
front edge
oI the
bevelled
part
ol
the
fin
(see.drauting)'
Mark
the
position
of
the
hole
with
a felt
-tip
pen,
and
dnll.lr
cen-
iiJiJ
i" tÄ"
tailolane
mount
using
a 5
mm diameter
drill'
The tailolane
is now
attached
to the
fin using
the
plastlc.screw
32
and
captive
nut
33.
The
shaft
of the
captive
nut
must
polnl
ä6*'n*"iäiAiign
tne
tailplane
carefullv.
then
invert
the
fuselage
and sDot-qlue
the
nut in
place
with
5-minute
epoxy
lne
nuI
"än tt'in
uä s""ur"lv
bonded
in
place
with
thickened
epoxy
re-
iin.
Betote
applyind
ttre
resin.
apply
wax
to
the
plastic
screw
and screw
it into
the
nut.
This
will avoid
resin
cloggrng
up
Ine
threads.
öiirrä
a.t
diameter
hole
centrally
in the
tailplane
mount'
1O mm
from
the
front edge,
to accept
the
head
ot the
selr-rap-
oinq
screw
17,
which
serves
to
locate
the
tailplane
5äiä*in!
t"irprun"
in
place
and
align
it
accurately
To do
this'
f ix
a
lenqth
of strong
thread
to
the
canopy
latch,
and.
measure
lo
uoitr
iG
or tne
iaitplane.
Rotate
the
tailplane
until
the
dimen-
sions are
identical.
The
position
of
the
front
hole
is
now
marKeo
än
inÄ
iaifpfane
from
ihe
underside
of
the
tailplane
mount'
Scräw
ttre
self-tapping
screw
34
into the
tailplane
where
Ää*eo.
crrecr
tnai
ihelailplane
now
locates
accuratelv,
then
r.ääuJ
tÄ"
""r"*,
apply
5
-minute
epoxy
and
screw
it in again-
Check
that
the
rudder
is still
free
to
move
to both
sides
wllnoul
Iouling
the
elevator.
The elevator
linkage
Make up
the
short
pushrod
from
parts
35, 36
and
37,
and
fit
me-
iäiü""LäJ
s9 o"
the
two
M2
threaded
rods
Fit the
wooden
äirq;i;to
the
pusttrod
and
plug
in
the
threaded
rods
Assemble
ihä-J"ii'ioo
'idry",
and
fit
it in the
fuselage
with
the
tailplane
mounted
on the
fin. Mark
the
correct
length
ot
the
threaoeo
rods.
then
remove
and
dismantle
the
pushrod,
cut
the
threaoeo
rods
to
lenqth,
and
bend
a
small
hook
on
the
insrde
eno
ulue
iiJinreao"ä
r.äos
and
wooden
plugs
into the
pushrod'
using
5
-
minute
epoxy.
Fii iÄ" "-räuisäs
ano
secure
the
bottom
one
with cyano
-acrylate
äilä.1r"*"titt'"
pushrod
and
adjust
it
if necessary'
When
the
;levator
is
neutral,
the
crank
must
be
horizontal
worKlng
lrom
inä'Jäiroit
"no,
iheck
that
the entire
system
works
smoothly
äno *itn
ininimai
slop.
Apply
a drop
of
cyano
-
acrylate
to
the
top
clevis.
The
wings
The
first staqe
here
is to sand
down
the
trailing
edges
Work
ca-
refullv,
to achieve
an
even
thickness
of
no
more than
1 mm
laKe
"ää
äiiä
to
täintain
a smooth
airfoil
shape
Particular
care
is
needed
when
sanding
the
ailerons;
be sure
lo
keep
tne
wrngs
rn
their
foam
negative
shells
when
sanding'.
. ..
Seoarate
the
äileron
from
the
wing
panel
by cutting
at
ngnl-
anäles
to
the
inboard
wing
leading
edge
Bemove
a
strlp.
/
mm
wide from
both
ends
of
the
aileron,
to
provide
clearance
ror Ine
balsa
sealing
strips.
Sand
the
aileron
leading
edge
peneclly
siralqht.
ThehacÄining
process
leaves
rounded
corners
to
the
maciined
slot:
these
should
be sanded
square'
öriiüä
"lr"toti
sealing
strip
22
into
the
lengths
required'
trim
tiem
to
tit,
qtue
tnem
iÄ
place,
and
sand
the
edges
flush
Please
üätä t-tt"t
ihä top
"dge
-
which
later
forms
the aileron
hinge
line-
Äuiioä
rett st'ärp.-otfer
up
the
aileron
to
the
wing
and
check
that
it
lits accurately.
Äüä"-n
tt'" sealing
sjtrips
22 to
the
ailerons,
and
sand
downto
i"f'f o*iÄe
*i"g
seition.
Offer
up
the
aileron
to
the
wing
and trim
,n'näiä
"ä"6i"ä.v.
rhe
gap
between
wing
and
aileron
should
be
1mm.
\ivÄen
attaching
the
sealing
strips
to
the
ailerons
it is
vital
not.to
äl"iä.t-tnäpän-"r".
Weightlhem
down
on
a f lat
board'
with.the
ieääing
äüde
proiecting-
slightlv,
and
leave
them
in this
position
until
the
glue
has set.
iüä räiräuiinq
section
describes
two
methods
of
actuating
lhe
äir'Jrons.
iirs-t,
the
orthodox
linkage
using
servos
in the.fusel-
age,
bowden
cables
and
bellcranks
Second:
the
svstem
oaseo
on
wing
-
mounted
servos.
Aileron
bellcranks
Drill
a 3
mm
diameter
hole
in
the
bellcrank
mount
19
where
mäir<eO.
Ässemure
the
"super-flat"
bellcrank
20 as
shown
in
it'ä
inürr"iion",
"nd
screw
it to the
mount
The
crank
must
rot-
ätä
ireeiy,
Uut
witlout
play.
lf there
is a
little axial
movement'
rub
17