AeroFoam L-39 Manuale utente
L-39
1/6.6th Scale
Length 72 inches (1828 mm)
Wing Span 56 inches (1433 mm)
Weight RTF minus Fuel 16lbs (with AUT full)
Suggested Engine Size: 60n ~ 80n (6kg ~8kg)
Perfect for our ACEx60 or ACEx80
CG 115 mm (4.5 inches) from leading edge at root of wing to fuselage.
Aileron Travel 12mm (15/32)
Elevator Travel 12mm (15/32)
Rudder Travel 25 mm (1 inch)
Flaps: Take off 15-20 Degrees Landing 35 - 45 Degrees
Speed Brakes Landings 60 - 75 Degrees (do not operate at high Speed)
The L-39 comes with Seven 12g Servos and Seven 25g Servos. Use 6.0v MAX
CAUTION: When setting up and connecting the servos on your L-39 for the first time, be
careful not to have the Speed Brakes and the Flaps Binding one example is to have the
model resting on a table and connecting power to the servos and have the Flap or Speed
Brakes in the down position. You will burn out the servos.
Nose section: There are three servo leads coming out of the nose section, make sure you pass
them through to the fuselage. Find the 4 Metric 4x50 (two inches long) screws and washers.
You will need to insert those through the main fuselage into the nose section. You only need
to make them snug enough until all the gap on the side of the fuselage is gone. Do not over
tighten and crush the foam.
ELEVATORS: All the pushrods come is separate bags, the hardware is very tiny, take special
precaution not to lose any. Adjust both ends of the Pushrod, make sure that both ends have
an even spacing. In the example below, the left side is a lot shorter than the other end. On the
flying surface side, there are two positions for you to adjust the travel, on this example we
used the top hole and same on the Servo side. Since not much travel is required on the L-39,
on the servo side, use the lowest hole possible and on the flying surface side use the top hole.
Control Throws: Use the lowest hole possible on the servo arm and the highest
hole on the control surface. Since the required travel is very small on all, but the
rudder on all of our flying surfaces, in order to get the best resolution / control
from your radio, adjust the surfaces to your liking, we recommend settings that
will give you more control over the entire range.
RUDDER: On the Elevators, Rudder and Ailerons, you want to center the servos
and then install your pushrod so that the servo arm and the control horn are 90
degrees to the flying surface like in the picture of the Elevator. On the vertical fin
there is a scale baffle the you will have to glue to the top of the Fin right on at the
top of the rudder. Use your favorite glue, if you use CyA, try to use a Foam Safe
type of your favorite brand. Alternative, you can use Epoxy.
FLAPS: The servo for the flaps, in the UP position, you will have the servo arm at
about 45 Degrees at neutral. Adjust the pushrod as needed and install Again, use
the hole in the servo arm that is closest to the servo and the top hole in the
Control Horn in the Flap. This will give you more control in the entire range of
motion instead of having to limit the amount of travel in your flap channel later.
WING ASSEMBLY: Find the two Wing Spars, the bigger one is about 29.5 inches
and the smaller, thinner wing spar is about 26.5 inches. Insert both through the
fuselage and slide one wing into the pars. The first time you insert the wings, you
will notice that the landing gear strut will probably touch the foam in the wheel
well. This is normal, and will NOT interfere with the operation of the Landing Gear.
Just push the wing into place and it will automatically connect the Landing Gear,
Brakes, Servos and Lights for you. Install two Metric 3x10 screws on each wing
ELEVATORS: Find the elevator spar which is about 19.5 inches, feed the spar
through the fuselage and then install each elevator half making sure to connect
the servo extension on each side first, then use two Metric 3x10 screws to hold the
elevator into the fuselage.
RUDDER / VERTICAL FIN: Find the spar that is about 12.5 inches long and insert
into the fuselage. slide the vertical fin into the spar and connect the servo
extension, as you slide the vertical fin down, make sure to slide all the servo cable
into the slots in the base of the fin and into the vertical fin itself. Install the two
metric 3x10 screws to hold in place.
The retract covers: look great if used but you have to take many precautions to
make sure they are installed correctly. There must be sufficient gap between the
landing gear door that is attached to the strut and the actual landing gear cover. It
might be necessary for you to trim the landing gear door on the strut to make sure
you have enough clearance. The first two photos shot the stock gap and then the
clearance i had to make. The third picture will show what can happen when the
cover is loose or not glued properly. You will need to trim slots in the cover in
order to have it seat properly. If you are not comfortable taking all these
precautions, simply do not install the retract cover.
Equipment Installation: There are many ways to install your Receiver, turbine and
batteries. The airplane will come with all the servo leads routed to the front of the
jet and coming out the top of the Receiver tray. All the leads will be marked. If you
remove the receiver tray, you will find the UAT it is up the end user to decide to
what level of installation they are comfortable with. It is highly recommended that
take the time to at the very minimum place safety wire on all fuel connections
(example below of the UAT tank) . You may also go the extra step and install Fuel
Barbs and then the safety wire on each side of a fuel line connection. The Fuel
pump can be installed in the radio compartment or moved closer to the engine.
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