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- Tape or hold each aileron at the neutral position, and drill
a 2 mm Ø hole through the wingtip and into the control
surface. Push a retaining peg (tooth-pick -N.I.) into the
hole to fix the aileron in place.
Fig. 90
- Sand back the end of the tooth-pick flush with the wing-
tip. Repeat with the second aileron.
Figs. 91 and 92
- The ailerons can now be covered as part of the wing. If
you later wish to use the model with aileron control, sim-
ply slit the film and saw through the tooth-picks, and the
ailerons are ready for the linkages.
Fig. 93
- If you have fitted working ailerons, the servo extension
leads should be routed out of the wing when covering is
complete:
- This is done by drilling a hole in the bottom wing sheeting
close to the leading edge, between ribs F2 and F3, so that
the aileron servos can be threaded through them when
the wing has been covered.
- Apply a little cyano to the edge of the holes to harden the
material.
- Cover the ailerons separately, and only then attach them
to the wings using the hinges. Secure each hinge with a
drop of cyano, and fit tooth-pick pegs when the glue is
hard for additional security.
Stage 8 - the main undercarriage
Parts List
Part No. Description
H1
Main undercarriage unit, 4 mm Ø
H2
Wire brace, 3 mm Ø
H3
Oval sleeve
H4
Undercarriage saddle clamp
H5
Self-tapping screw, 2.9 Ø x 9.5
H6
Wheel
H7
Collet and grubscrew
Assembly and operating instructions
Figs. 94 and 95
- Fit the oval sleeves H3 on the main undercarriage unit H1
and the brace H2 to join them.
- Remove the film covering over the undercarriage chan-
nels in the underside of the fuselage.
- Fit the undercarriage in the slots, drill 2 mm Ø pilot-holes
for the retaining screws, and fix the undercarriage to the
fuselage using the saddle clamps H4 and the self-tapping
screws H5.
- Check the alignment of the main undercarriage, then sol-
der the wire legs to the oval sleeves, taking care to pro-
duce strong joints.
Figs. 96 and 97
- Fit the wheels H6 on the axles and secure them with the
collets H7. Check that the wheels rotate freely.
Stage 9 - installing the servos, final work
Parts List
Part No. Description
RC1
Rudder / elevator servo, N.I.
RC2
Control surface horn, complete
RC3
Threaded coupler and locknut
RC4
Clevis
RC5
Balsa strip, 4 x 4 mm
RC6
Aileron servo, N.I.
RC7
Aileron pushrod
RC8
Receiver, N.I.
RC9
Strain relief, N.I.
RC10
Switch harness, N.I.
No. off
RC11
Receiver battery, N.I.
1
- Remove the output arms or discs from all the servos.
1
2
Figs. 98 and 99
4
8
- Press the rubber grommets and metal spacers into the
2
mounting lugs of the servos RC1, and set them to neutral
4
from the transmitter.
Charter
No. off
2
2 (4)
2 (4)
2 (4)
2
2
2
1
1
1
1
11
- Install the rudder and elevator servos RC1 in the servo
plate in the fuselage.
- Cut down the servo output levers as shown, connect the
pre-formed end of the pushrods to them, and slip the
pushrods into the outer sleeves in the fuselage.
- Fit the output levers on the servos and secure them with
the servo output screws.
- Trim the strip RC5 to fit across the fuselage, and glue it to
the former R6 with the snake outers resting on it. Glue the
pushrod outer sleeves securely to the strip.
Figs. 100 and 101
- Position the horns RC2 on the control surfaces, exactly in
line with the pushrods. Note their position relative to the
hinge pivot axis "D".
- Mark the position of the horn retaining screws and drill
them 2 mm Ø. Fix the horns in place using the M2 screws
and the spreader plates supplied.
- Tape or pin the control surfaces at the centre position.
- Cut the pushrods to correct length and fit the threaded
couplers on the cut ends. Fit a locknut on each threaded
coupler. Place a piece of scrap wood under the pushrods
prior to soldering the joints, to avoid splashes of solder or
flux damaging the covering film.
- Solder the joints, then screw the clevises on the threaded
couplers and connect the control surfaces.
Aileron servos (optional)
Figs. 102 and 103
- Locate the aileron servo wells in the wings and remove
the covering film over them.
- Connect the servos to the extension leads in the wings,
and fit them in the servo wells. Drill 1.5 mm Ø pilot-holes
and screw the servos to their mounts.
- Cut down the servo output levers as shown, and fit them
on the servos at 90° to the line of the pushrods. The servo
output arms must lie parallel to the aileron hinge pivot
axis.
- Make up the aileron pushrods and connect them to the
servo output arms. Position the horns on the ailerons in
line with the pushrods, remembering to position the linka-
No.
3181
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