Kavan Der Kleine FALKE Bauanleitung Seite 4

17) Carefully cut the No. 37 control surfaces off the No.36 V-tail stabilizers.
Mark the centres of the "bridges" connecting the No.36 and No.37 parts.
Round the outer edges of the stabilizers (except for the roots) and con-
trol surfaces.
18) Glue together the No.36 V-tail stabilizers using the supplied jig (Bag J)
on a flat building board protected with a sheet of thin plastic film. Once
the glue has cured, sand the joint smooth. Glue the tail boom tube to
the V-tail stabilizers.
19) Use a fine needle file to make a groove for the push rod tubes in the hole
for the tail boom (the push rod tubes will be glued to the top of the tail
boom later).
20) Insert the tail boom into the fuselage; attach the wing to the fuselage.
Check the correct alignment of the V-tail; once satisfied, glue the tail
boom in place.
FLYING
1) Tie the wing to the fuselage using the supplied rubber bands. Add
ballast as necessary in order to achieve the correct position of the cen-
tre of gravity (CG). Support the wing of the model with your fingertips
in the point marked „ " on the fuselage plan. The fuselage should be
level - if the nose pitches up, add more ballast into the nose; if the tails
pitches up remove the ballast.
Free flight model: place and secure the appropriate ballast in the
nose. If you intend to enter an F1H (A1) contest, you will have to add
additional ballast into the CG position in order the all-up weight of
your model was higher than 220 g.
RC model: Try to place the receiver battery, servos and receiver in
such a manner the correct CG position was achieved without adding
any ballast at all if possible.
2) Free flight model: Secure the protruding piano wire push rods to
their outer tubes by a strip of sticky tape in the cockpit. This will allow
trimming the model if necessary whilst the position of control surfaces
remains fixed.
3) Choose a nice calm day for the first flight of your Der Mini FALKE. The
flying field should be a flat, grassy site; free of power lines or other ob-
stacles. The model must be launched into the wind every time. Throw
Up elevator
Once trimmed out you can try your first hi-start with your Der Kleine FAL-
KE using 50 m towline (a fishing line) or a bungee (5 m of 3x2 mm rubber
thread and 20 m of thin fishing line). Tie a key ring to one end (bowline
knot is the best) and a flag (a piece of red cloth) 20-30 cm from the end.
The flag makes the towline visible in the air as well as on the ground. Find
a suitable spool to keep the towline on.
Have a ball, enjoy your Der Kleine FALKE!
KAVAN Team
Down elevator
4
21) Apply a light coat of thinned protective dope to the V-tail stabilizers and
control surfaces. When dry, lightly sand all doped surfaces with the fine
sandpaper. Repeat once or twice more; sand lightly once every coat has
dried.
22) Stick a modelling pin into the centre of the trailing edge of the V-tail
stabilizer in the previously marked spot. Enlarge the hole slightly by
twirling the pin carefully. Make the other holes for the nylon line hinges
(Bag J) in the No. 36 stabilizers and No.37 control surfaces. Cut 8 mm
pieces of the supplied nylon line and glue them half-way into the holes
in the stabilizers. Once the glue has set, glue the control surfaces onto
the protruding nylon lines.
23) Glue the push rod outer tubes to the top of the tail boom. Insert the pia-
no wire push rods into the tubes, thread the No.38 control surface horns
on the Z-bends and glue them into the notches in the control surfaces.
grass into the air to observe the wind direction.
Hold your model with the wings and fuselage level. Launch your model
with a gentle push straight with the nose pointing slightly down. Do
not throw your model with nose up, or at greater angle than 10 degre-
es down. The model must have a certain minimum speed from the very
start to stay airborne. It is not enough to just place your model in the
air. It is better to land in tall grass in order to prevent any damage to
your model during initial trimming.
If everything is OK (correct wing and tailplane alignment, correct CG
position), Der Kleine FALKE will fly with the wings level in a nice glide
with its nose pointing slightly down. If the model glides straight down
to the earth a few paces in front of you, move both two control surfaces
(exactly the same) slightly up. On the other hand, if the model climbs
up and then stalls, you will need to move both two control surfaces sli-
ghtly down. If your model turns left, move the right control surface sli-
ghtly down and the left control surface slightly (exactly the same) up
- and vice versa. Repeat the test until you achieve a smooth long glide.
The RC model is to be trimmed in the same manner; you will just use
the control sticks and trims to control the flight and adjust the neutral.
Right rudder Left rudder