GILES 202 - Graupner

servos for each aileron, each with a rated torque of at least 7 kg. The wings feature
machined wells for these servos. The rudder should be actuated by two servos rated
at around 10 kg torque; an alternative solution is to fit one Jumbo servo for this
function. The servo plate is pre-cut for two standard-size servos, but the outline of a
Jumbo servo is also marked. For models of this size it should go without saying that a
separate servo with a torque of at least 7 kg must be fitted for each elevator panel.
The openings for these servos are pre-cut in the fuselage, but have to be trimmed to
suit the particular servos you are using. We recommend the mx-22, mc-22 or mc-24
radio control systems; all of these transmitters feature programs (some ready-made)
which can cope with parallel linked servos (wing programs; dual mixers may be
required). The easiest method of connecting servos in parallel and fine-tuning their
running characteristics is to use the Magic-Box, Order No. 3162. This can be used for
the rudder and ailerons if multiple servos are used for each control surface.
It is very important with a model of this size that all joints involving the GRP
components are really strong. This means sanding the joint surfaces thoroughly
beforehand and using the appropriate adhesive. All joints should be made using
epoxy laminating resin and matching accessories (thickening agents, glass cloth and
tape). Do not use 5-minute epoxy except for tacking parts in place temporarily, as
these adhesives are not stable at all temperatures.
Building instructions
Fuselage and fuselage openings
Locate the marked openings in the fuselage (1) at the wing root and tailplane root
positions. Cut the holes to approximate size using a rotary cutter then clean them up
using a file and abrasive paper (Figs. 1, 2). Take your time over the holes for the wing
joiner sleeve and tubular incidence pegs, as these sleeves need to be a smooth,
sliding fit, with no hint of slop. Note that these openings are accurate reference points:
if cut out exactly as marked you can be confident that the wings and tailplane will line
up correctly with each other, and that the longitudinal dihedral will be correct.
Cut an opening in the top of the fin as shown in Fig. 3. Fig. 4 shows the openings for
the two elevator servos, which must be trimmed to suit the case size of the servos you
intend to install. Use a rotary cutter or file for this. Glue small pieces of birch ply (28 x
15 x 3 mm - Figs. 5, 6) on the inside of the fuselage at the servo positions to support
the retaining screws as shown in Fig. 6 (bag VIII).
Setting the fuselage on the main undercarriage and tailwheel unit
Drill 6 mm Ø holes in the main undercarriage unit (2) at the stated spacing (Fig. 7).
Place the undercarriage unit in the recess in the GRP fuselage and centre it
accurately. Continue the 6 mm Ø holes through the fuselage (Fig. 8), then open up
the holes in the fuselage to 7.3 mm Ø. Fit the M6 captive nuts in the holes, then
secure the undercarriage unit (2) using M6 x 20 socket-head cap screws and 6.4 Ø x
12.5 Ø mm washers. The undercarriage fixings are included in bag VII.
Drill 5 mm Ø holes in the wheel spats (3) at the marked point (Fig. 10).
Drill 5 mm Ø holes in the undercarriage unit (2) at the position stated in Fig. 9; note
that this dimension is only approximate, so please check on your actual
undercarriage.
Install the 110 mm Ø wheels (19) using the hardware shown in Figs. 11, 12 and 13.
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