1. Your YAK 55 should not be considered a toy, but rather a
sophisticated, working model that functions very much like a full-
size airplane. Because of its performance capabilities, the YAK
55, if not assembled and operated correctly, could possibly
cause injury to yourself or spectators and damage to property.
2. You must assemble the model according to the instructions.
Do not alter or modify the model, as doing so may result in an
unsafe or unflyable model. In a few cases the instructions may
differ slightly from the photos. In those instances the written
instructions should be considered as correct.
3. You must take time to build straight, true and strong.
4. You must use an R/C radio system that is in first-class
condition with a correctly sized motor and components
throughout the building process.
5. You must correctly install all R/C and other components so
that the model operates correctly on the ground and in the air.
6. You must check the operation of the model before every
flight to insure that all equipment is operating and that the
model has remained structurally sound. Be sure to check
clevises or other connectors often and replace them if they
show any signs of wear or fatigue.
7. If you are not an experienced pilot or have not flown this
type of model before, we recommend that you get the
assistance of an experienced pilot in your R/C club for your
first flights. If you’re not a member of a club, your local hobby
shop has information about clubs in your area whose
membership includes experienced pilots.
Remember: Take your time and follow the instructions to
end up with a well-built model that is straight and true.
NOTE: Recommended part numbers are included
in parentheses.
❏
4-channel radio minimum (for maximum 3D performance,
a computer radio with mixing is recommended)
❏
4 sub-micro servos ( 0.3 oz [9g] or less each) (FUTM0042)
❏
Micro receiver (FUTL0442-3)
❏
Servo Y-harness (FUTM4130)
❏
two 6” Servo extensions (HCAM2000)
❏
two 12” Servo extensions (HCAM2100)
❏
25-amp brushed ESC (GPMM2025)
❏
1250 - 1500mAh 3-series Lithium Polymer battery
pack (GPMP0823) (GPMP0831)
❏
Lithium Polymer Charger...
Great Planes Triton Charger (GPMP3150) or
Great Planes Polycharger (GPMM3010)
Radio Equipment and Electronics
ADDITIONAL ITEMS REQUIRED
WARNING!! Read the entire instruction sheet included
with the battery. Failure to follow all instructions could
cause permanent damage to the battery and its
surroundings, and cause bodily harm!
• ONLY use a LiPo approved charger. NEVER use a
NiCd/NiMH peak charger!
• NEVER charge in excess of 4.20V per cell.
• ONLY charge through the “charge” lead. NEVER
charge through the “discharge” lead.
• NEVER charge at currents greater than 1C.
• ALWAYS set charger’s output volts to match battery volts.
• ALWAYS charge in a fireproof location.
• NEVER trickle charge.
• NEVER allow the battery temperature to exceed
150°F (65° C).
• NEVER disassemble or modify pack wiring in any way
or puncture cells.
• NEVER discharge below 2.5V per cell.
• NEVER place on combustible materials or leave
unattended during charge or discharge.
• ALWAYS KEEP OUT OF REACH OF CHILDREN.
LITHIUM BATTERY SAFETY
We, as the kit manufacturer, provide you with a top quality,
thoroughly tested kit and instructions, but ultimately the
quality and flyability of your finished model depends on
how you build it; therefore, we cannot in any way
guarantee the performance of your completed model, and
no representations are expressed or implied as to the
performance or safety of your completed model.
PROTECT YOUR MODEL, YOURSELF
& OTHERS...FOLLOW THESE
IMPORTANT SAFETY PRECAUTIONS
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