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4
Irvine Tutor
40
II
5
Irvine Tutor
40
II
Identify the aileron link parts - two pushrods, aileron horns, two nylon snap links and two
swing-in keepers. Using a pair of pliers to hold the pushrod, screw on a nylon snap link until
the thread is just visible through the inside of the snap link. Repeat for the second pushrod. Now screw the two aileron
horns onto the torque rods already installed in the wing. Ensure that both are screwed on the same amount - they should
be approximately 30mm from the wing’s surface.
6.1. Screw on a snap link
6.2. Screw on the aileron control horns
6.3. Ensure the horns are screwed on equally
30mm
Connect up the aileron servo to the aileron channel in
the receiver, connect the receiver battery and turn on
the transmitter. Centre the aileron trims and make sure both ailerons are level.
Attach the first snap link to the aileron control horn as shown. Carefully mark
the position where the pushrod passes the servo’s control horn. Using a pair of
pliers, bend the pushrod 90° at this marked point. Using a pair of side cutters,
trim off the excess pushrod length, leaving 6mm after the bend.
7.3. Bend the pushrod 90 at this point
7.1. Connect the snap link
7.4. Trim off the excess length beyond 6mm
after the bend
7.2. Mark the pushrod where it crosses the
control horn, 11mm from the servo centre
Now connect the bent pushrod to the servo horn
using a hole approximately 11mm from the centre.
Slip a swing in keeper over the end of the pushrod and snap it closed over the
pushrod. Repeat this for the second pushrod, ensuring the ailerons remain level.
To complete the linkages, slip a short length of Silicon fuel tubing over each snap
link.
8.3. Complete the second pushrod in the
same way
8.1. Connect the pushrod to the servo horn
8.4. Short length of fuel tube secures each
snap link
8.2. Snap on a keeper
FITTING THE TAILPLANE
Using a sharp knife, carefully
remove the film covering
from the tail and fin slots
at the rear of the fuselage.
Make sure that you do not
remove any wood from the
slots as this will affect the
alignment of the tail and fin.
9.1. Trim the covering from the fin slot
9.2. Trim the covering from the tail slots
Stage 6
Stage 7
Stage 8
Stage 9