|Contributed by: Greg Covey | Published: January 2007 | Views: 55899 | Email this Article
COX Christen Eagle ARF
by: Greg Covey
Photos: Papa Jeff Ring
Pilot: Lynn Bowerman
Easy to Assemble
ESC, and Battery Included
Wings- Christen Eagle
Models has a new line called "Wings" which, among other
designs, has a licensed Christen Eagle® ARF. Molded in EPS
foam and colorfully decorated in the classic Eagle colors, this
exciting aerobatic model comes almost ready to fly, with the brushless
outrunner motor and brushless ESC pre-installed. Further, the
ARF kit also includes a 3-cell 1800mAh LiPo pack! The model comes
complete with servo installation hardware, extra prop and only
requires 3 sub-micro servos with approximately 17 oz.-in. of torque
and a 4-channel radio system.
Wingspan: 33.6" (85.5cm)
Length: 28-3/4" (73.8cm)
Flying weight: approx. 24oz (680g)
8.0 oz/sq2 - 9.0 oz/sq2
Brushless outrunner motor installed
sensorless electronic speed control with BEC installed
11.1 volt, 1800mAh LiPo Battery included
that is needed to complete the ARF are the following items:
4 channel transmitter and micro receiver
micro servos 17oz/in torque
hobby supplies like glue, servo tape, razor knife
COX Christen Eagle comes very well packaged in a box that has
a built-in handle making it easy to carry. The custom foam inside
the box is formed to the planes shape giving it good support for
shipment without damage. Most of the assembly is all done for
you. All tail parts are mounted and glued in place and appeared
to be straight. The main plastic wing cabanes have wire reinforcement
control surfaces are hinged and the control rods are pre-installed.
I did find the elevator and rudder were stiff and hard to move.
This is easily fixed by disconnecting the control rods and moving
the surfaces back and forth several times to the full length of
travel. The procedure seemed to get things moving much easier.
motor, ESC, cowl, prop, and spinner come pre-installed. The ESC
even has a mating Dean's Ultra connector already soldered on it
and is ready to plug into your battery pack and receiver.
complete the ARF, I am using 3 Hitec HS-55 servos and an M5v2
micro receiver from FMA
assembly starts with a very simple servo installation. Cox supplies
the servo arms that are already on the pushrods but the arms
didnt fit on my HS-55 servos. If you choose to use HS-55
servos, there will be no need to modify anything to make them
fit as the servo mounts perfectly. When installing servos into
the fuselage, there are openings in the bottom of the servo
mounts for routing the servo wires. This will guide the wires
right to the receiver location. The HS-55s fit nice and
snug in the foam servo mounts. Cox recommends that you install
a foam wedge between the servos to help hold them apart. I used
a piece of foam from the box that the Christen Eagle came in.
After the servos were in place I used a drop of ZAP-O(tm) foam
safe CA on each servo tab just to make sure the servos were
going to stay still.
the fuselage above the bottom wing opening there is a little
pocket where the rudder and elevator servo wires arrive. I decided
to use the M5 v2 receiver from FMA Direct because of its full
strength dual conversion performance. To install the receiver,
all you have to do is turn it on its side and it will fit snuggly
into the little pocket in fuselage. Since the installation and
removal of the receiver is so easy, I was able to hook the aileron
servo lead into the receiver and slide it back into place without
the need for an extension cable.
installing the aileron servo, the HS-55 fit in the pocket perfectly.
Again, I added a drop of ZAP-O(tm) foam safe CA on each servo
tab. The pushrod wires come completed so just hook them up and
adjust as needed to center the ailerons. After you have installed
the wings and hooked up ailerons you may need to adjust the
ailerons again. I found that with the added weight of upper
ailerons, it made the lower ailerons droop down a little.
aileron control horns come pre-installed on wings. The control
horns work very well and seemed plenty strong. When installing
the clevises to the control horns, be careful not to side load
them as they may break if too much force is applied. The pushrod
wires also come pre-assembled and needed only one turn on the
clevis to make the ailerons line up perfectly.
dashboard and cockpit graphics come pre-installed.
canopy comes completely finished and ready for installation.
Simply remove the cover paper from the two- sided tape and stick
canopy to it. It is best to check the alignment on canopy before
installation as you only get one chance to have it fit properly.
the main gear is very simple. The wire simply slides into the
slot on the fuselage bottom and snaps into place.
tail wheel comes pre-installed so it is all ready to be used.
As long as the grass is kept fairly short, the Eagle will take
off and land without issue.
COX Christen Eagle ARF was ready-to-fly at 22.5oz using the
supplied stock power system. On a freshly charged LiPo pack,
we measured about 13.8amps or 150 watts at full throttle.
COX Christen Eagle taxies nicely with its steerable tail wheel
on smooth surfaces. It will also take off from a short grass
surface. The stock power system does provide for very capable
flight performance but it does not provide a 3D level of performance.
video of the COX Christen Eagle was shot on a rather grey day
in November with winds from 5-10mph. The little bipe with the
stock power system not only takes off and lands on grass but has
the performance of a much bigger model.
won't be disapointed in the COX Christen Eagle. It is a great
design and has excellent value for the $129 price. It comes almost
completely assembled and decorated in the box. The ARF kit includes
the motor, ESC, props, and a 3-cell LiPo pack.
only fault I can find on this ARF package is that the supplied
3-cell LiPo battery does not have a node connector for safe balancing.
However, the battery does have a circuit board under the shrink
wrap so it is an easy task to add your own favorite node connector
to keep the pack balanced for better safety and longevity. I modified
my pack to add a Cellpro brand pigtail from FMA Direct.
Eagle has a wide range of flight performance from more docile
hands-off cruising, at half-throttle, to wild aerobatics, at full
throttle. This will keep the pilot with advanced skills happily
flying in a small soccer field area or challenge the intermediate
pilot looking to advance their aerobatic capabilities.
Cox Hobby Distributors
PO Box 274
Penrose, CO 81240
5716A Industry Lane
Frederick, MD 21704
Sales: 800-343-2934 or 301-668-7614
Glues On-line at Frank Tiano Enterprises
Pacer Z-42 Thread Locker
Pacer POLY ZAP(tm)
The comments, observations and conclusions made in this review are solely with respect to the particular item the editor reviewed and may not apply generally to similar products by the manufacturer. We cannot be responsible for any manufacturer defects in workmanship or other deficiencies in products like the one featured in the review.
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