14 +
Assemble Only With Adult Supervision
Please read through this instruction booklet to THOROUGHLY familiarize yourself with
the assembly and flight characteristics of this airplane prior to assembly. Please inspect
all parts carefully before starting assembly! If any parts are missing, broken or defective,
or if you have any questions about the assembly or flying of this airplane, please call us at
(217) 398-8970 and we’ll be glad to help.
Entire Contents ©2011 Hobbico® Inc.
Printed in China
FCC Requirement
This device complies with part 15 of the FCC rules. Operation is
subject to the following two conditions.
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including
interference that may cause undesired operation.
Your Sky Cruiser should not be considered a toy, but rather a
sophisticated, working model that functions very much like a fullsize airplane. Because of its performance capabilities, the Sky Cruiser,
if not assembled and operated correctly, could possibly cause injury
to yourself or spectators and damage to property.
1. Operate the plane according to these instructions. DO NOT
alter or modify the model. If you make any modifications, you
void your warranty.
2. Test the operation of the model before each flight to ensure
that all equipment is operating properly and that the model
remains structurally sound.
3. Fly on calm days (with wind speeds less than 5mph) and in
large open areas free of trees, people, buildings, or any other
4. If you are in need of assistance from an experienced pilot,
we suggest contacting your local R/C flying club. If you’re
not a member of an R/C club, your local hobby shop has
information about clubs in your area whose membership
includes experienced pilots. You can also contact the
National Academy of Model Aeronautics (AMA) which has
over 2,500 chartered clubs across the country. Instructor
training programs and insured newcomer training are
available through any of these clubs.
Contact the AMA at the following address or toll-free phone number:
Academy of Model Aeronautics
5151 East Memorial Drive Ph. (800) 435-9262
Muncie, IN 47302-9252
Fax (765) 741-0057
Thank you for choosing the Cox Sky Cruiser — and for giving us
this opportunity to show you how enjoyable and rewarding R/C
aviation can be. Your chances for success are excellent if you take
your time and follow the instructions carefully. Before long, you’ll
be ready to master higher levels of R/C flight…and the Sky Cruiser
will remain a favorite even as your experience grows.
Mode 2 Shown
❍ Lithium Polymer (LiPo) Battery: Rechargeable
battery which is used to power the airplane. LiPo
batteries are lighter and smaller than most other
types of rechargeable batteries.
❍ Transmitter (TX): This is the hand-held unit that
sends the signal to the control unit, or RX.
❍ Rudder: Controls yaw (turning).
On/Off Switch
Elevator Trim
❍ Elevator: Controls pitch (up & down).
Rudder Trim
Install The Transmitter Batteries
Remove the battery compartment cover from the back of the
transmitter. Install four fresh AA batteries according to the “+” and
“–” polarity markings imprinted into the battery compartment.
Replace the cover.
Turn on the power switch on the transmitter and observe the battery
icon in the status display. When the battery icon is blinking, the
batteries are too low and should be replaced. Four squares inside
the battery icon indicate that the batteries are at full power.
Also note the flying mode in the status
display and make sure your transmitter
is configured in the desired mode.
Mode 2 is most commonly used in
the U.S.
Flying Mode
Transmitter Cautions
● Do not use rechargeable (NiCd) batteries.
● Do not mix old and new batteries.
● Do not mix alkaline, standard (carbon-zinc) or rechargeable
(NiCd) batteries.
Charging the On Board LiPo Battery
From AC
Connect the AC adapter to the charger. Plug the adapter into a 110V
AC wall outlet. The red power LED will illuminate. Plug the white
balance connector on the battery into the port on the charger.
When connected, the charger will automatically begin to
charge and the green charge LED will illuminate. A fully
depleted battery may take as long as 1 hour
to charge completely. Partially discharged
batteries will take less time to charge.
The charger will terminate charge when
the battery has reached its capacity. The
green charge LED will go off when this happens.
You can now disconnect the battery from the charger as
it is ready for flight.
After each flight, remove the battery from the airplane and allow
it to cool before recharging.
WARNING!! Failure to follow all instructions could cause
permanent damage to the battery and its surroundings, and
cause bodily harm!
● ONLY use the included charger to charge the LiPo battery.
● ALWAYS charge in a fireproof location.
● NEVER allow battery temperature to exceed 150°F [65°C].
● NEVER disassemble or modify pack wiring in any way or
puncture cells.
● NEVER place on combustible materials or leave unattended
during charge or discharge.
● DO NOT leave the battery connected to the Sky Cruiser for an
extended period of time. This can cause permanent damage
to the battery.
● DO NOT leave the battery unattended while charging.
Battery Charging Precautions
1. Always remove the battery from your Sky Cruiser before
2. Do not leave a charging battery unattended! Unplug the
battery if it gets warm, even if the green charge LED has not
gone out.
3. Do not use a different charger to charge the Sky Cruiser
flying battery.
WARNING: Misuse or malfunction may overheat the battery and
charger, resulting in personal injury or damage to surroundings.
Battery Recycling
ATTENTION: The product you have purchased is powered by a
rechargeable battery. At the end of the battery’s useful life, under
various state and local laws, it may be illegal to dispose of this
battery into the municipal waste system. Check with your local
solid waste officials for details in your area for recycling options or
proper disposal.
WARNING: This product contains a chemical known to the State
of California to cause cancer.
Assembling the Sky Cruiser
Insert the carbon rod into the hole of one of the wing
panels, making sure it is fully seated.
Insert the wing into the fuselage.
Fit the other wing panel onto the carbon rod. Push the
wing panels together.
Press the propeller onto the propeller base attached to
the motor shaft. Press firmly until it clicks into place. If
the propeller does not easily snap into place, rotate the
propeller slightly to align the splines on the base.
Reconfigure the Mode of the Transmitter
Unless you are flying in a country where Mode 1 is
prevalent, there is no reason to change the mode. If you
have decided to operate your airplane in Mode 1, perform
the following procedure to reconfigure the transmitter.
Use a #1 Phillips screwdriver to loosen the (2) antenna
mounting screws.
Rotate the antenna upward until it is vertical.
Rotate the antenna 180°, allowing it to be folded down
the other way.
Fold the antenna back down into the other side. Reinstall
and tighten the (2) mounting screws.
Now your transmitter has been reconfigured to operate
in Mode 1 and you will be holding the transmitter 180°
(seemingly upside down) from when it was set up in
Mode 2. The control sticks will operate the airplane
accordingly. The rest of the instructions illustrate the
transmitter configured in Mode 2.
Set Up the Transmitter
With the power switch on the transmitter turned on,
press the trim buttons as necessary to center the trim
indicators in the status display.
Trim Indicator
Trim Indicator
Select the desired skill mode by pressing inward onto
the elevator/rudder control stick. If this is your first time
flying the Sky Cruiser, select the Low Rate mode. This will
provide reduced control throws to lessen the chance of
over-control for your first flights. As you become proficient
flying the Sky Cruiser, experiment with the high rate
setting at a safe altitude.
Skill Mode
High Rate
Low Rate
Be certain the transmitter antenna is in its vertical
position and that the power switch on the transmitter
has been turned on. Note: Unless performing the “Binding”
procedure described on page 9, never allow the battery to
be connected to the Sky Cruiser without the transmitter
turned on. This means you should always turn on the
transmitter first before installing the battery into the
model, and always turn off the transmitter first before
removing the battery from the Sky Cruiser.
Also be certain the throttle control stick is fully down
so the propeller will not rotate when you connect the
battery. Note: If you inadvertently connect the battery
with the transmitter off, or with the transmitter on but the
throttle stick not all the way down, the propeller should
not turn until you turn on the transmitter or move the
throttle stick all the way down.
Bind The Airplane To The Transmitter
When the receiver is able to read signals from the transmitter, the
two are said to be “bound.” Until the receiver in the airplane is
programmed to read the transmitter’s signals, the airplane cannot
be controlled.
Your Sky Cruiser’s receiver has already been bound to its transmitter
at the factory. If you ever need to re-bind them, simply follow the
procedure described below:
1. Disconnect the LiPo battery from the airplane.
2. Turn on the transmitter. Lower the throttle control stick all
the way down. Adjust the throttle trim tab until the throttle
trim indicator is centered and the throttle position indicator
reads “000.”
3. Turn off the transmitter.
4. Connect the LiPo battery to the airplane. Turn on the transmitter
while pressing inward on the throttle control stick until you hear
the servos activate. If you have the wing off, you will also see
the red LED on the receiver illuminate. This indicates that the
receiver is reading signals from the transmitter—this should
happen within a few seconds.
If it doesn’t work the first time, disconnect the LiPo battery from
the airplane and turn off the transmitter. Repeat the binding
procedure again by reconnecting the LiPo battery and turning on
the transmitter with the throttle stick depressed.
The receiver is now “bound” to the transmitter and the plane is
ready to fly.
First Flight
Turn the transmitter power switch to the ON position.
Remove the canopy hatch from the fuselage by lifting
it upward.
Connect the battery to the plane and insert the battery
into the slot at the front of the fuselage. Be sure the
battery wires do not contact the servo gears in the
fuselage. The motor is now considered live. Keep clear
of the propeller in case of accidental start-up.
Replace the canopy hatch back onto the fuselage.
Check the Control Directions
Test the control surfaces to become familiar with their operation.
Point the propeller away from you when doing this in case of
accidental start-up.
When the right control stick is moved down, the elevator
will move up.
When the right control stick is moved to the left, the
rudder will move to the left.
When the left control stick is in the down position, the
propeller will not rotate. To test the operation of the
motor, be sure to have a firm grasp of the airplane with
your hands clear of the rotational arc of the propeller.
Be sure to point the propeller away from people or
Adjusting the Control Trims
Elevator Trim
1. Before making your first flight, use the trim buttons to
center the elevator and rudder surfaces. Adjust the trim
as necessary using the trim buttons until the control
surfaces are inline as shown.
2. If additional trim is required beyond what the trim
buttons are capable of making, the clevises can be
disconnected from the control horns and threaded
forward or aft on the pushrods. This will allow the control
surfaces to be centered with the trim buttons at or near
the center position.
Do not make your first flight with any of the trim buttons
set at their maximum position. Mechanically trim the
control surfaces as necessary if this is the case.
Choose a Good Flying Site
The Sky Cruiser should be flown outside only when the wind speed
is 5 mph [8km/h] or less. If flown in stronger winds, the plane may
be very difficult to control or may be blown downwind and not have
enough power to get back. If the wind is calm or very light, the Sky
Cruiser will be responsive and precise. Also, find an area clear of
trees, power lines and other structures. A flying field for R/C planes
is best. Don’t fly around groups of people, especially children. Flying
indoors, such as in a gymnasium, is possible but only recommended
for pilots with sufficient experience with the Sky Cruiser.
Although the Sky Cruiser is small, it will provide the same level of control
and thus require the same amount of skill as a comparable larger R/C
model. Because of this, typical launch, flight, and landing routines for
larger models should also be practiced with the Sky Cruiser.
Hand Launch
When ready, grasp the Sky Cruiser by the fuselage
beneath the wing and hold it well clear of your face
and body. Move the throttle stick to full throttle.
Always toss the Sky Cruiser directly into the wind.
Launching into the wind will reduce relative ground
speed and therefore the effort it takes to get the plane
airborne. Give the Sky Cruiser a toss into the wind at
a 15–20° upward angle. As soon as the plane is in the
air get your fingers on the control sticks and be ready
to make rudder and elevator corrections to keep the
plane flying straight while gradually gaining altitude.
Be smooth on the elevator stick, allowing the model
to establish a gentle climb to a safe altitude before
making the first turn (away from yourself ). Do not “yank” back the
elevator stick forcing the plane into too steep of a climb. This could
cause the model to quit flying and stall.
Trimming the Sky Cruiser
As soon as you have reached altitude, be prepared to trim the model
for straight and level flight. A plane that is not properly trimmed will
be difficult to fly at best and could also result in a crash. Level the
plane with the elevator stick and slowly release the elevator stick
toward the neutral position. If the Sky Cruiser pitches upward, use
the elevator stick to regain control and add a few “clicks” of down
elevator trim (pressing on the “up” side of the elevator trim button).
If the Sky Cruiser pitches down, regain control and add a few clicks
of up elevator (pressing on the “down” side of the elevator trim
button). Continue doing this until the Sky Cruiser can be put into
level flight and it can maintain level flight with the elevator stick
in the neutral position. Add left or right rudder trim in the same
manner you did with the elevator to correct any tendency for the
plane to deviate from straight flight.
Take it easy with the Sky Cruiser for the first few flights, gradually
getting acquainted with it as you gain confidence. Adjust the trims
to maintain straight and level flight. After flying around for a while,
and while still at a safe altitude with plenty remaining battery charge,
practice slow flight and execute practice landing approaches by
reducing the throttle to see how the model handles at slower speeds.
Add power to see how it climbs as well. Mind your battery charge,
but use this first flight to become familiar with your model before
landing. Typical flight time will be approximately 8 to 9 minutes.
To initiate a landing approach, lower the throttle while on the
downwind leg. Allow the nose of the model to pitch downward
slightly as you begin to gradually bleed off altitude. Continue to lose
altitude, but maintain airspeed by keeping the nose
Downwind Leg
down as you turn onto the base leg. Make your final
turn toward the landing site (into the wind) keeping
the nose down to maintain airspeed and control. Level
the attitude when the model reaches the landing site
threshold, modulating the throttle as necessary to
maintain your glide path and airspeed. If you are going
to overshoot, smoothly advance the throttle (always
ready on the right rudder to counteract torque) and
climb out to make another attempt. When you’re ready
to make your landing and the model is about a foot
or so off the ground, smoothly increase up elevator
until it gently touches down.
If, during a rough landing, the propeller on the Sky Cruiser should
become jammed and cannot rotate with the throttle in the
run position, the battery and airplane electronics could become
damaged. Immediately lower the throttle to stop the motor.
After the Flight
Disconnect and remove the battery from the airplane. Then, switch
the transmitter off. Allow the battery to cool before recharging.
Check the airplane over to make sure nothing has come loose or
may be damaged.
Even the best R/C pilots in the world damage their airplanes every
now and then. In the unfortunate event that you damage your
airplane, repairs are fairly simple to make yourself. If there are any
cracks in the wing or fuselage, apply 6-minute epoxy, or CA glue
to the broken areas and hold them together with clear packaging
tape. Let the glue harden, then carefully remove the tape.
Replacement Parts List
Replacement parts for the Sky Cruiser are available using the
order numbers in the Replacement Parts List that follows.
The fastest, most economical service can be provided by
your hobby dealer or mail-order company.
To locate a hobby dealer, visit the Hobbico web site at www. Choose “Where to Buy” at the bottom of the
menu on the left side of the page. Follow the instructions
provided on the page to locate a U.S., Canadian or
International dealer.
Replacement Parts List
Stock No.
COX A 5 8 7 5
COX A 5 8 7 6
COX A 5 8 7 7
COX A 5 8 7 8
COX A 5 8 7 9
COX A 5 8 8 0
COX A 5 8 8 1
Parts may also be ordered directly from Hobby Services
by calling (217) 398-0007, or fax at (217) 398-7721, but
full retail prices and shipping and handling charges will
apply. Illinois and Nevada residents will also be charged sales
tax. If ordering via fax, include a Visa® or MasterCard® number and
expiration date for payment.
Mail parts orders and payments by personal check to:
Hobby Services
3002 N. Apollo Drive, Suite 1
Champaign, IL 61822
Be certain to specify the order number exactly as listed in the
Replacement Parts List. Payment by credit card or personal
check only; no C.O.D.
If additional assistance is required for any reason, contact
Product Support by telephone at (217) 398-8970, or by e-mail at
Hardware Set Sky Cruiser EP
Motor Sky Cruiser EP
Prop/spinner Sky Cruiser EP
Tail Set Sky Cruiser EP
Fuselage Sky Cruiser EP
Canopy Sky Cruiser EP
Wing Set Sky Cruiser EP
Hobbico® Inc. guarantees this kit to be
free from defects in both material and
workmanship at the date of purchase. This
warranty does not cover any component
parts damaged by use or modification.
In no case shall Hobbico’s liability exceed
the original cost of the purchased kit.
Further, Hobbico, Inc. reserves the right to
change or modify this warranty without
notice. In that Hobbico, Inc. has no control
over the final assembly or material used
for final assembly, no liability shall be
assumed nor accepted for any damage
resulting from the use by the user of the
final user-assembled product. By the act
of using the user-assembled product,
the user accepts all resulting liability. If
the buyer is not prepared to accept the
liability associated with the use of this
product, the buyer is advised to return
this kit immediately in new and unused
condition to the place of purchase. To
make a warranty claim send the defective
part or item to Hobby Services at the
address below:
Hobby Services
3002 N. Apollo Dr. Suite 1
Champaign IL 61822 USA
Include a letter stating your name,
return shipping address, as much
contact information as possible (daytime
telephone number, fax number, e-mail
address), a detailed description of
the problem and a photocopy of the
purchase receipt. Upon receipt of the
package, the problem will be evaluated
as quickly as possible.
The transmitter does not turn on when the switch is moved to the
ON position.
The AA batteries in the transmitter are exhausted. Replace with
new AA batteries.
The AA batteries in the transmitter are installed incorrectly. Reinstall
the batteries correctly as described on page 3.
The Battery Status on the transmitter indicates the transmitter
batteries are depleted or the transmitter emits a constant beeping.
The AA batteries in the transmitter are low. Replace with new
AA batteries.
The plane control surfaces or throttle do not respond to control
stick inputs from the transmitter.
The LiPo battery is depleted. Charge the battery.
The LiPo battery is not properly connected to the airplane. Disconnect
the battery and reconnect it, ensuring it is fully engaged in the
connector in the correct orientation.
The transmitter has become “unbound” with the airplane (the
transmitter and airplane can no longer communicate with each
other). Follow the binding procedure on page 9.
For any other problems not addressed here, please contact
Product Support. (217) 398-8970