QuiQue's Aircraft Yak-54S Assembly Manual page 15

Step 1
Use a # 11 blade to open the flat
hinge slot.
The hinge slots will have to have a
larger opening cut out just on either
side, top and bottom, of the pivot
point on both surfaces. So you will
need to open the area in the fixed
and moveable surfaces of the
ailerons, elevators and rudder.
Step 2
Use a #11 blade and make a wedge
tapered opening to accept the
pinned hinge area of the hinge. See
Figure 12 & 13.
Figure 12
Figure 13
Step 3
Make a V- cut in the fixed and
control surface area along the slot
location of the flat hinge. This
additional V- slot will insure that the
hinge will insert far enough into the
hinge slot so it is in the proper
location and provide enough depth
for each hinge. The gap between the
flying surface and the control surface
needs to be at a minimum. However
we have to have enough of a gap so
full deflection is possible.
Step 4
Check the gap on each control
surface. The gap should be
somewhere between 2 and 3 mm.
This procedure will take some time
to do all of the hinges but take your
time and do a nice job. As you do
each hinge and check out the proper
depth and shape of the V-slot
necessary for each hinge, the time
involved to do each subsequent
hinge will lessen.
Before you glue the hinges in
place:
Dry fit the control surfaces to fixed
surfaces. Make sure everything is
lined up. In case of elevator make
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