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8ülldlng Instruclions
101 lhe DG 300 Elan
Specilication
Wngspan:
Fuselage
length:
Wing area:
Aspect ratio:
Empty weight:
Flying weight:
Wing loading (FAl):
Winq section:
Tailplane
section:
RC functions
Ailerons (one or two servos)
Elevator
Budder
Airbrakes
Optional aero{ow coupling
Optional rekactable
undercarriage
(standard commercial
type)
Optional retractable
p0wer plant (standard commercial
type)
There are three alternative
methods of operating
the ailerons:
One servo mounted in the fuselage,
- Two servos mounted in the fuselaoe:
Two servos mounted in the wings.
ll you lit two servos, you can make use of an electronic aileron
dilferential
lacility, or even use the ailerons as camber-changing
flaps
with the help 0f a mixer (suitably
equipped
transmitter
required).
l'|ole: Do not use any solvent-vased
adhesives
on the wood/styrofoam
components,
especially
instant glues (cyano-acrylates)
such as Zacki.
Use s-mlnute
epoxy or white glue.
l{ote: The control surface horns '14 are used as lollows:
1 lor the rudder (drilled 1.3 m.m. 0)
1 lor the elevator
(drilled 1.6 m.m. 0)
2 for the ailerons
(drilled 1.7 m.m. 0)
2 for the rudder hinges (1.0 m.m. 0; drill out to 2 m.m. 0)
The fuselage
_, The first, preparatory
stage is to saw out the canopy frame along the
marked line, and clean up the cut edges.
Bevel the edges of parts 8 - '10 (front former, servo plate and main
former), to follow the curvature of the fuselage. The die-stamped
apertures in the servo plate 9 match Multiplex Nano servos; if you
intend using different servos, the apertures
may need to be a dilferent
size.
Parts I - 10 are installed as lar forward as possible in the fuselage;
the
canopy lrame is used here to ensure that the fuselage width is correct.
The fuselage must be wider than the canopy trame by up to 1 m.m. all
round. Check that your receiving equipment
(battery, servos, switch
harness, receiver) will fit in the space provided belore gluing the
plywood parts in place. Check also that the canopy lrame is an
accurate fit.
Roughen
up the tuselage sides where they are to be glued, and glue
parts I - 10 in place, using slow-setting
epoxy.
Glue the fuselage cross-struts
5 together with the edges flush, and
trim their rear face to match the internal shape ol the wing root fairing;
glue them in place when they are a snug lit.
Caution: the fuselage must not be pushed out ol shape by the struts.
All the holes and apertures
in the fuselage wing root fairings can now
be drilled. The holes for the fear locating pin are 3 m.m.0. The holes
for the wing linkages marked on the front p0rtion should lirst be pilot
drilled, then filed out caretully to linal shape.
Draw lines to join up the marked corners of the wing joiner slots, then
pilot drill, and lile the slots to shape. Take care that a minimum
distance ol 1 m.m. is maintained
between the bottom edoe of the
fairing section and the joiner slot.
Wing ioiner system
The two rectangular
brass lubes have to be n0tched at one end, as
shown in the drawing, otherwise the width ol the fuselage prevents the
components
being litted.
Assemble
the wing joiner system and set a total dihedral angle of 7'.
This entails setting the side pieces 48 m.m. from the centre of the
joiner unit, i.e. the side pieces are 96 m.m. apart. (dihedral
= 3.5'per
wing, total dihedral = 7") D0 not forget to press in the rivet!
Numerous
test flights have shown the recommended
dihedral
0f 7'to
be the ideal average value, providing a good alfround balance of flight
characteristics.
We strongly advise you not to increase or reduce the
dihedral anole.
pieces to the tubes, uslng s-minute epoxy or instant
llote: Never tighten the clamping screw unless both wing blades are in
olace in the tubes. otherwise
the tubes will be crushed and the blades
will no longer fit.
Check that the wing joiner assembly
lits in the luselage.
The next step is to align the wing joiner assembly and bond it in place;
accuracy here is crucial to the model's flying characteristics;
please
work carefully.
Fit the wing joiner blades and the locating pins 38 loosely in the wings,
then fit the wing joiner assembly
into the luselage,
and plug in the
wings. Check whether the wings and fuselage root fairings are
correctly aligned, and trim out the holes in the root fairings to correct
any discrepancy.
Do not worry about any gaps; they will be lilled with
resin laler.
Sight along the fuselage from the nose, and check that the lin is
vertical.
The wing joiner assembly can now be spot-glued in place, using
s-minute epoxy - do not glue it in place permanently
at this stage.
Allow the resin to set hard (at least '15 minutes).
Unplug the wings and joiner blades, and seal olf the outside of the
wing root fairing with tape.
The wing joiner unit can now be permanently
bonded in place. Use
thickened epoxy resin for this (Araldite or other high-strength,
slow-
setting resin, filled with scraps 0f tibreglass,
micro-balloons,
chopped
fibreglass
strands etc.). lt is advisable
to bond in each side separately,
and to leave the fuselage lying 0n that side until the resin has
completely cured. This avoids any danger ol the resin penetrating into
the wing joiner unit.
Sand the projecting ends of the wing joiner unit flush with the outside
surface of the wing root tairings.
The die-stamped
apertures in the servo plate 12 match Multiplex
Nano servos (two servos for ailerons). lf you intend using dilferent
servos, cut apertures
t0 match, then trim the servo plate t0 fit in the
luselage at the correct point.
ll the ailerons and airbrakes are t0 work elficiently it is essential
that
the servo plate is located in exactly the right place. To ensure that this
is the case, fix the servos to the plate (either screwed directly, or using
quick-release
mounts), and position the plate in the fuselage.
Slide the
steel pushrods 18 and 19 into the wing-mounted
bowden cable
outers, leaving them projecting at the root. Plug the wings into the
luselage.
The servo plate is now moved untilthe rods p0int exactly to the points
on lhe servo output arms from which they are to be actuated. There
should be no curve in the rods at all. Check that the servo Dlate is
.horizontal
in the fuselage.
When you are satislied, spot-glue the plate
in place with s-minute epoxy, then remove the wings and servos and
bond the plate permanently
in place.
3750 m.m.
1540 m.m.
72 dnz
19.5
ca. 3300 g.
ca. 4200 g.
ca. 58 g./dm,
FX 60-'126
Naca 0009
Glue the side
glue.
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