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Thank you for your purchase of the Extreme Flight RC YAK-54E Electric ARF. This
aircraft was designed to provide maximum performance and fun in a realistic looking,
lightweight, fully aerobatic park flyer. Using an inexpensive and efficient brushless
outrunner motor and speed controller and a single high discharge 3S1P or 4S1P Lithium
Polymer battery, the Yak-54 provides unlimited performance capability.
Great care was taken to design a light weight yet robust airframe. Expert engineering
and modern laser cutting methods in conjunction with a carbon fiber wing tube and
composite control horns keep weight to a minimum. Unique features such as the ram air
equipped motor box, 2 piece plug in wings, and magnetically retained canopy/hatch make
for quick easy assembly and instantaneous access to the interior of the plane and battery
tray. The Yak-54 can truly be assembled in an evening-buy it one day, fly it the next!
As with all Extreme Flight RC airplanes, the proof is in the flying! Due to the close
proximity of the wing and stab to the thrust line, the Yak-54 is a very neutral flying
aircraft. It flies precision aerobatics remarkably well and allows you to practice your
IMAC sequence almost anywhere. The slightly stretched fuselage makes for a plane that
tracks like a pattern ship and the lightweight wings minimize over rotation in snaps. On a
calm day you’ll be amazed at how well this thing flies the sequences.
If 3D is your thing then strap in! The Yak-54 does it all with ease. Beautiful, slow
high alpha knife edge passes. FLAT spins both upright and inverted, rock solid elevators
and harriers. Tremendous aileron authority and insane roll rate from the massive
ailerons. The Yak also excels at tumbling maneuvers. You’ll be surprised at the range of
gyroscopic maneuvers you can perform. True tail over nose tumbles are no problem for
the Yak-54.
Sport flyers fear not! Just because you’re not a 3D hot dogger or IMAC flyer doesn’t
mean you can’t enjoy the Yak-54. With reduced rates the Yak-54 is a very easy plane to
fly. Its super light wing loading allows it to land at a walk. It will instill confidence and
allow you to improve your flying skills. When you’re ready for more advanced
aerobatics, flip the dual rate switch and hang on!
As with any high performance aerobatic aircraft, great care must be taken to avoid
excess speed. Excess speed will lead to control surface flutter and quite possibly the
complete destruction of your aircraft. Don’t let this happen to you! Always have the
motor at idle when the airplane is pointed down and reserve full throttle for vertical
climbs. Make sure you have adequate mechanical advantage in your control linkage set-
up. If you are unsure about this, have a more experienced flyer look over your set-up
before flying. Extreme Flight RC, Ltd. in no way warranties its aircraft against flutter.
As with all of our planes, we put the Yak through a rigorous flight testing regime and
have not experienced any control surface flutter.
The Yak was designed around the Torque 2814T/820 Brushless Outrunner motor and
Airboss 45 Amp ESC. This is the best choice for powering the Yak, providing plenty of
power for any maneuver imaginable. Other outrunner motors in this class will work as
well but may require slight modification to the motor mount.
The Yak is very easy to assemble. Take a few minutes to read this manual before
beginning assembly to get familiar with the process.
