FREE AIR Extra 3D Adrenaline, Assembly Instructions Manual

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2 EXTRA 3D www.freeair.cz
EXTRA 3D
Dear customer, congratulations on the purchase of the
Extra 3D Adrenaline
model. To enjoy
building and flying the model most, please, read carefully the building instructions before you
begin and make sure that you understand the building process.
DESCRIPTION OF THE MODEL:
The Extra 3D model was designed from the outset for the popular 3D flying. It can
execute many manoeuvres that fall outside of all known categories and some still do not have
established names. Thanks to its all-flying (slab) empennage the model is very sensitive to
controls and gives its pilot an excellent contact and control of its movement. To actuate the
control surfaces of the model, three to four servos are needed. The already very strong and
light airframe (thanks to the use of the expanded polypropylene - EPP - as its main building
material), is further reinforced by carbon composite components (such as the tube in the
fuselage), increasing strength almost without adding weight.
We suggest that you use the Rotex AC motor or other mark of similar power, fed from 2 or 3
cells of LiPol batteries. The model is available in three colour versions.
BUILDING:
Start with gluing together the wing, i.e. the main spar web and the trailing section, as
shown on fig.1, using either the polyurethane (PU) glue or the five-minute epoxy. Weight the
wing on a flat surface until glue dries. Cut out the opening for the propulsion battery, so that
the front wall of the battery compartment is formed by the wing mainspar web. According to
fig. 2 and 3, attach the ailerons, using the glass-weave-reinforced adhesive tape, sprayed on
the underside with the 3M contact glue. To improve the adhesion, iron-on the tape with the
modelling iron heated to XX°C.
As shown on figs. 4, 5, attach the aileron horns, using the five-minute epoxy glue. Now
using a sharp modelling knife, open-up the servo compartments, keeping them, however,
slightly smaller than the servo overall dimensions, so that the servos would push-fit into their
respective cut-outs (fig. 6). Cover the servos with the paper masking tape and glue them with
the CyA. Attach the aileron push-pull rod (fig. 8) bend its end to the Z shape. Now modify
the wing tips. According to fig. 9, cut a wedge in the wing mainspar web end and bevel the
circumferential edges of the wingtip. Then apply the CyA glue to the bevelled edges and press
together as shown on figs. 10 and 11.
Glue the aluminium motor bearer (fig. 12) to the fuselage carbon tube reinforcing
backbone, using the five-minute epoxy, and CyA glue the whole assembly into the fuselage,
according to the fig 13. Glue (CyA) the slab elevator reinforcing doublers to the fuselage sides
(as shown on figs. 14 and 15), ensuring that the assembly is true and at right angles to the
fuselage. Glue (CyA) the fixed part of the vertical tail surface to the fuselage end as shown
on figs. 16 and 17. Glue (CyA) the doublers to the elevator control horn (fig. 18). In one third
of the elevator chord, drill the hole for the elevator joiner tube, using the same tube as the
core drill (fig. 19). Now place the elevator control arm to the fuselage (fig. 20), and insert the
elevator joiner (fig. 21). Open-up the servo compartment (in a similar manner as in the wing,
i.e. so that the servo would push-fit in) (fig. 22). Install both elevator halves (fig. 23) and glue
the servo into the fuselage. Ensure that the parts are at right relative angles. Put the servo to
neutral and using the figs. 24 and 25 as a guide, glue the elevator in place. Ensure that no
glue comes into the sliding surfaces and bushings, rendering the control circuit inoperative.
Using a modelling knife, open up the slots for hinges in the fuselage (fig. 26) and glue
the hinges therein. Now make the hinge slots in the rudder and glue the rudder to the hinges
(figs. 27 and 28). Do not forget to check the geometry (squareness) of the empennage
relative to the fuselage.
Using the figs. 29 and 30 as a guide, glue the wing to the fuselage with the five-minute
epoxy. Finish the other wing half, according to the figs. 2 to 11 and, using the figs. 29 and 30
again, glue it to the fuselage.
Attach the motor to the fuselage tube, using the set screw (worm) (fig. 31), and solder
the controller (fig. 32). Using a sharp modelling knife, cut the groove for the undercarriage leaf
spring leg a tady nevím co má být - originálu nerozumím a ani obrázek mi nepomohl. (fig. 33),
leaving it not glued for the moment. Using the five-minute epoxy, glue together the undercarriage
base with the undercarriage leaf spring leg and glue it into the fuselage (fig. 34).
Using a 2mm bit, drill holes for the bolts that hold the undercarriage wheels on the leaf spring.
Secure the bolt from both sides of the leaf spring with a nut and attach the wheels (fig. 35).
Using the fig. 36 as a guide, glue the rudder control arm and cut out the compartment
for the rudder servo (fig. 37). Install the rudder push pull rod, not forgetting to slide on its rod
the plastic tube, limiting its travel (fig. 38).
Insert the RC receiver (fig. 39) into the fuselage; if the servo cables are short, use the
extensions. Check the neutral position of the servos and glue the complete bottom fuselage
on??? (fig. 40). According to fig. 41, glue on the tailskid. The battery position behind the wing
mainspar web is shown on fig. 42. The centre of gravity (CG) of the model is some 100 to 120
mm back from the wing leading edge; it is influenced/adjusted by the position of the battery
pack(s).
The model is now assembled and you can adjust the deflection (throw) of the control
surfaces to a maximum of 45°. If it is the first case you fly a model with the all-flying (slab)
elevator, set the deflection first to about 20 mm.
Check the elevator is trimmed to zero incidence and off you can go. For the advanced
flying you may use the ailerons as flaperons, mixing them with the elevator inputs.
A lot of fun and many smooth landings with your model wishes FreeAir.
PARTS LIST
Part name Pcs Part name Pcs
Fuselage of EPP 1 Motor bearer 1
Elevator and rudder control rod 2 Base of the vertical tail (rudder) of EPP 1
Wing of EPP 1 Elevator joiner of carbon (5x100 mm) 1
Elevator and rudder of EPP 3 Slab elevator set (bushings and control
lever 5x)
1
Aileron of Depron 2 Instructions 1
Carbon composite tube of 5 x 700 mm 1 Motor bulkhead 1
Aileron push-pull rod 2 Undercarriage wheel 2
Plastic hinge 2 Set of bolts 2
Tail skid 1 Set of nuts 4
Plastic tube (3x10 mm) 4 Undercarriage carbon leaf spring 1
Undercarriage base 1
You will need the following tools and materials:
CyA glue, CyA glue accelerator, five-minute epoxy, polyurethane (PU) glue, 2 mm dia drill bit,
glass-weave-reinforced self-adhesive band, sharp (modelling) knife, sandpaper, 3M contact glue in
a spray can, soldering pistol. To complete the model you need the following: Receiver (Rex 5+),
servos (HS-55), controller (TMM 1210-3), battery pack (2-3 LiPol cells of 720-1500 mAh), motor
(Rotex 27/6/17), propeller, extension cable to servos (2 pc).
EXTRA_3D.indd 2 17.9.2004 12:44:19