QuiQue's Aircraft 102” YAK 54 Assembly & Instruction Manual - page 3
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Noise has been and issue and will be a bigger issue in the future for giant scale airplane,
our company supports quiet airplanes and we designed this airplane for canisters if that is
your choice. Please read in the assembly manual “canisters installation” for further
details.
Servos, receiver, match box & battery
Your choice of servos is always important on any aerobatic airplane. The power that it
takes to move the control surfaces with authority some times goes beyond our best guess!
I will strongly recommend that you run a good quality servo with output power above
200 oz. of torque, digital and ball bearing style. I have in my airplane the JR8611 digital
servos on 6 volts giving a solid 260 in. oz. of torque. As you can see we have provided in
this airplane for the rudder a third servo mount if you choose to run a digital servo with
smaller output such the JR8411(155 oz. at 6v.) or similar. This set up of three JR8411
servos will be equal more or less to two JR8611 servos.
For the ailerons or elevator if you use weaker servos (under 200oz) you are risking your
102” Yak-54 to a potential crash due to flutter on these control surfaces which of course
will produce the total destruction of the airplane. The large area of the control surfaces
and the long arms on the servos and control horns take a lot of abuse on the servos, so I
strongly recommend you do not run cheap or weaker servos than what I am
recommending. This is on the safety side, on the flying side, with powerful servos you
will enjoy much more the flying of the Yak54, feeling the total control of the airplane
under any maneuver with no limitations.
About the receiver I have in my airplane and flying successfully only one receiver JR955,
same as I use in the 120” competition Yak54. Use one Duralite Plus 4,000 mah battery
and three Match Boxes (Ailerons x 2 and Rudder) for best servo operation.
About transmitter, please read the radio set up section.
BASIC SET UP
The basic set up here is all about the airplane itself, and does not include the radio
programming which will see later.
All the incidence, wing, stab and engine have been already set by our factory. However
before your first flight I will suggest you to double check stab incidence. The stab
incidence is very critical and a small difference can affect the performance of your
Yak54. The hatch line is the flight line or zero line, the front of the horizontal stab
should between 1/8 of degree positive to zero to the hatch line. Make sure both stab
halves are adjusted the same. If there are any differences, please re-adjust the anti-
rotation pin and stab tab with a round file.
Center of gravity
As with any other aerobatic airplane the 102” Yak-54 requires a precise C.G. location for
best performance.
You’ll balance the airplane by lifting it from the wing tips. First mark at the wing tip 8-
7/8” from trailing edge as it is shown in the pic#1, do same at both wing halves. Put the
airplane to gather, make sure the tanks are empty. With the help of one person, place one
of your fingers lined up perfect center to the mark and you and your helper should then