wire protrudes out of the Faslinks. Connect the pushrods to
the servo arm with the Faslinks (you may have to enlarge
the holes in the servo arm for the pushrod wire – use a
hobby knife or a #48 drill for precision).
❏
6. Finish trimming the wing shield by cutting the front so
it extends below the centerline of the leading edge of the
wing by approximately 1/8" and the rear so it is even with
the bottom of the wing. Test fit the wing shield and make
adjustments to the opening for the aileron servo if needed.
For new modelers or those unfamiliar with finishing
techniques, we have provided some basic information
about the covering materials that are available and the
recommended covering sequence.
The foam wing and the balsa surfaces, including the
ailerons and tail feathers, must be covered with some kind
of protective, fuelproof finish. Among the many model
airplane covering materials available, Top Flite EconoKote
film is recommended. EconoKote film requires a lower heat
range to apply than other iron-on films, so it can be applied
over the foam wing. It can also be applied to the wood tail
surfaces as well. Apply EconoKote film with a hobby heat
seal iron.
One six-foot roll will be enough to cover the Trainer 40, but
if you wish to add trim colors or other designs, you will
have to purchase more than just one roll.
❏
1. Disconnect the elevator and rudder pushrods from
the tail feathers. Remove the control horns and hinges,
then take the stabilizer and fin off the fuselage channel.
Use a bar sander and 150-grit sandpaper to round the
leading edges of the fin and stabilizer. Final sand all the tail
surfaces with 320-grit sandpaper.
Tip:
If you don’t mind a little extra work and would like to
have a better looking model with a “finished” appearance,
taper the rudder and elevator by sanding the trailing edges
to a thickness of approximately 3/32". This is optional and
does not affect the flight performance of the Trainer 40.
❏
2. While the ailerons are still connected, sand the tips of
the wing so the balsa trailing edge and ailerons are all flush
with the wing tip. Disconnect the pushrods and remove the
control horns from the ailerons. Detach the ailerons from
the wing and remove the hinges.
❏
3. Apply white Hobbico HobbyLite
™
filler to any dents in
the foam wing. After the filler has hardened, use a sanding
block and 220-grit sandpaper to blend the wing extensions
to the rest of the wing and remove the seam on the leading
edge or any other molding irregularities. For the best
appearance, it is recommended that final sanding be done
with 320-grit sandpaper but without a sanding block.
Tip:
As with the rudder and elevator, for a “finished”
appearance, you may taper the ailerons.
❏
4. Before covering, remove as much balsa and foam
dust as possible left from sanding the model. This can be
done with compressed air, a vacuum cleaner, a brush or a
tack cloth.
Now the Trainer 40 wing and tail feathers are ready
for covering.
3/32"
Prepare The Tail Feathers & Wing
For Covering
Cover The Wing &
Tail Surfaces
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