Kit with retracts
Great ARF value and looks
Mating Power System
Superb Flying Performance
No Painting or Decals Needed
Pavement or Hand Launch
Pre-hinged Control Surfaces
Spare Parts Available
No Rudder Control
Stabilizer Bushings Misaligned
Control Horns too thick for clevis
F-15 Eagle DF ARF
has replicated the F-15
Eagle as a sport, scale twin EDF model. This military fighter
model boasts the scale Edwards Air Force Base Safety Chase trim
scheme making it a very attractive and highly visible jet. Since
the F-15 Eagle is a highly pre-fabricated foam ARF, you will spend
less time building and more time flying. The model comes out of
the box fully painted red and silver on white foam with custom
decals applied. It even includes the retracts!
high powered model was designed around the use of two E-flite
DF 3800 Kv motors to match with the included ducted fan units.
The low wing loading and twin ducted fans allow superior maneuverability
and acceleration to perform basic aerobatics. While this plane
is capable of flying a tight flight pattern, it can still be flown
at your local park. The wings are each reinforced with a carbon
fiber tube spar for added stability. This model also has full
flying horizontal stabilizers for pitch control and stability.
flight characteristics and response of E-flites F-15 Eagle
mirror those of the full size McDonell Douglas Eagle, down to
the aerobatic capabilities. This model was created for the ambitious
sport scale, advanced pilot looking for a versatile electric model
capable of park flying.
Span:36 in (915mm)
Overall Length:47 in (1195mm)
Wing Area:400 sq in (25.8 sq dm)
Flying Weight:40 - 50 oz (1135 - 1420g)
Motor Size:420 Ducted Fan 3800 Kv (EFLM1340DF) (2 required)
Servos:Sub Micro (5 required, 8 with retracts)
Trim Scheme Colors:White base molded EPS foam with orange trim
Speed Control :40 Amp Brushless ESC (2 required)
Recommended Battery:2100 3S 11.1 V Li-Po (2 required)
Approx. Flying Duration:8 - 10 minutes
scale F-15 Eagle military fighter model boasts the scale Edwards
Air Force Base Safety Chase trim scheme
Ducted Fan units included
Retracts included for enhanced flight performance
Injection-molded EPS foam airframe thats lightweight and
easy to repair
Full molded and painted airframe
Full carbon wing spars
All flight control surfaces are prehinged
Molded servo pockets makes radio installation a snap
All decals applied at factory
main fuselage, wings, and stabilizers are pre-painted and ready to install.
the loose parts are bagged and the retracts packed separately. The 35-page
manual is accompanied by additional decals for covering the main wing
after installation. .
closer look at the fuselage reveals that the hatch latch is pre-installed.
The battery tray, straps, and ducted fan units also come already installed.
To power the F-15, you need two sets of these
also need up to eight E-flite S75
Sub-Micro Servos if you plan to use the retracts. Five servos
are needed if you don't use the retracts.
assembly starts by installing the horizontal stabilizers. I found
that the pre-installed outside and inside plastic bushings did
not line up properly so I simply drilled through both of them
with a 7/64" bit and the stabilizer fit fine. The S75 servo
was held in place with a few drops of medium CA as they already
had a snug fit into the fuselage opening. The servo arm hole was
opened with a 5/64" drill bit and then again slightly with
a razor knife until the pushrod connector fit properly. Note that
the other stabilizer servo and linkage faces the same direction
so only a "Y" adapter is needed to connect both halves
to the elevator receiver channel.
EDF unit and supplied 2mm x 6mm motor mounting screws are intended
for the original E-flite 420 motor. Since I am using the improved
Ducted Fan 3800Kv 420 motor from E-flite, the mounting screws
(not supplied) need to be 3mm x 6mm. I drilled the motor holes
in the EDF unit larger with a 7/64" bit and also slotted
them toward the outside as the DF 420 motor mount spacing is further
apart. Note that the DF 420 motor comes with the 3 connectors
already soldered on the long wires.
Sport line provides excellent quality radio systems, servos
and other electronics at a great price! Here are some JR Sport
products that can be used on the F-15.
soldering your favorite power connectors to the battery pack
and ESC, I used Dean's Ultra connectors; the next step is to
test the direction of rotation of the EDF before mounting it
into the fuselage. This is done by connecting the ESC control
line to the throttle channel of your receiver and then connecting
the battery pack. When using a Spektrum radio system like my
DX7 transmitter and AR6100 receiver, it doesn't matter if you
plug in the battery first or turn on the transmitter first.
that since the factory defaults of the E-flite (EFLA312B)
40-Amp Brushless ESC are set to Auto Li-Po voltage cutoff and
brake off, no programming is needed. Further, the BEC's on both
ESC's can be used at the same time, via a Y-harness to the throttle
channel of the receiver, to give the ability to run more than
4 servos. This saves weight and ensures trouble-free radio operation.
The elevator control lines are taped to the EDF units and routed
as shown so that the fan cover can be mounted without pressing
on the wires. I used a JR Sport (JSP98020)
6" Y-harness to connect the two elevator servo wires. All
the wires and ESCs are routed between the fan tunnels into the
main fuselage area topside. The fan cover is held in place by
two of the supplied 2mm x 22mm sheet metal screws.
E-flite F-15 Eagle comes with both fixed landing gear and retracts
for enhanced flight performance. The retracts require 4 additional
S75 servos; two for the rear wheels and two for the front steerable
I am using a 6-channel Spectrum AR6100 receiver, the AUX1 (Flap)
channel was used to mix with the GEAR channel instead of the
recommended AUX2 channel (which is only available on 7 channel,
or more, receivers).
install the S75 servos for controlling the retracts, you need
to cut away the fuselage foam going into the duct. The servo
protrudes slightly into the duct area and is held in place with
main swing position of the control linkage is adjusted by the
set screw in the servo arm quick link. The servo linkage swing
is fine tuned by the individual channel travel adjust on the
DX7 transmitter. Note that the AUX1 channel is reversed from
the GEAR channel to make the retracts travel in the same direction;
up or down.
help minimize the air interference, I routed the retract servo
wires back into the ducted fan area. The wires were taped flat
with clear shipping tape and routed through the fuselage center
using JR Sport (JSP98040) 24" servo extensions.
of the servo wires were routed under the battery tray for a
cleaner look and less interference with the batteries. The two
ESC control lines were routed along the outer edges of the battery
tray. I held the AR6100 receiver in place with servo tape.
nose gear is mounted in a similar manner to the mains. Since
it is steerable, two servos are used up front.
my setup, the nose gear retract servo was connected to the
AUX1 channel via a Y-harness and the steering servo into the
rudder channel. The nose retract servo has a similar swing
to the AUX1 retract servo so they can be connected together.
If this doesn't work for you, simply change the hole used
on either servo until they match.
cut a notch in the foam to allow the axle to retract higher
into the nose. I also mounted the pushrod connector inverted
on the retract servo for a straighter run on the wire.
Aileron Servos and Wing:
aileron servos were installed before gluing the wing panels
to the fuselage. I needed to cut the servo opening a bit for
a better fit on my S75 servo. Once again, I found that the control
horns needed to be made thinner for the clevis to properly snap
shut before additionally securing it with the rubber ring keeper.
the aileron servos were installed, I could not find the supplied
tape to cover them so I used some white sticky back trim covering
that I had picked up at my local hobby shop.
of routing the servo wires into the duct area as the manual
suggests, I choose to route them along the outside (via a
slice I made in the foam) into the fan assembly area. The
two servo wires were then connected together via a Y-harness
and fed through the center to the receiver using a single
24" extension cable.
glued the canopy onto the hatch with some Bond 527 multi-purpose
last step in assembly was to install the batteries and
check the balance. In addition to the supplied hook and
loop straps that come with the F-15, I used some Velcro
strips on my battery packs and tray. This technique keeps
the packs from shifting in flight as well as being secured
from lifting up off the tray.
balance my F-15 at the recommended 3-3/8" back from
the wing leading edge at the fuselage, I needed 1oz of
sticky-back lead weight under the nose. I also secured
the lead weight with some Bond 527 multi-purpose cement.
there is likely to be little ill effect from the left
over foam cylinders in the duct, most EDF enthusiasts
cringe upon seeing anything that perturbs the air flow
so it is best to remove them. A hack saw blade made this
an easy task.
E-flite F-15 Eagle was Ready-To-Fly at 43oz using two of the ThunderPower
2100mAh 3-Cell 11.1V LiPo Packs.
first testing the F-15 Eagle in my driveway and street, everything
looked ready to go. My first test at the flying field ended
up with a "flame out". We were trying to see if it
would take off grass so we didn't have to hand-toss it. The
F-15 starting taxiing and then suddenly both rotors came off
the motor shafts. I decided to take it home and fix it properly.
removing the rotors, I balanced them using the Dubro Tru-Spin
Prop Balancer. The rotors were a bit out of balance so this
step can only help the power level.
then used my Dremel grinder to create a flat spot on the motor
shaft and could feel that the adapter was properly over it when
tightening the set screw. Pacer Z-42
thread locker was re-applied during the tightening of the set
last step was to sand the duct using #220 grit in between the
rotor blade and the inner duct wall. I did this until there
was no rubbing on any rotor blade.
tested the F-15 Eagle on its maiden flight off a side street
near a local park. Although the 10-15mph winds were a bit high,
the F-15 performed very well. We learned that only a short take-off
area is needed on pavement and that the F-15 can slow up nicely
for easy landings. After a 5-minute flight, the batteries were
still half charged.
the F-15 does not have rudder control, when the nose gets light
on take-off, you must have it pointed in the right direction.
We reduced the nose steering servo gain by 50% for better control
on paved take-offs.
forgot to warn the pilot, Paul Weigand, about the stabilizer
tips protruding below the fuselage, so when we landed the F-15
on grass (with the gear up), it tore off one of the stabs. This
can be seen in the video on landing. Fortunately, due to the
ball link release, it was an easy repair with 5-minute Z-poxy.
After gluing the stabilizer corner back on, the linkage was
simply re-connected by pressing the ball link back on.
modification for runners on the bottom of the F-15 is shown
below for landing in grass.
created some bottom runners (or skids) from a small 5"
x 1-1/4" piece of floor padding sold at home improvement
stores. The grey padding comes in 2' square "puzzle"
pieces which I used to line the floor of my R/C trailer. It
is very light, firm, and shock absorbing. Alternatively, EPS
foam could also be used.
runners were glued in place with epoxy and will allow some elevator
offset when landing in grass. They also keep the model very
level when laying it on a flat surface for transport with the
gear up. A simple razor slice will allow removal of the fan
cover, if needed.
had an opportunity to fly the F-15 Eagle off a paved runway
at an R/C event just South of Buffalo in Hamburg, NY. The F-15
performed very well with the stock setup. We could loop, roll,
and fly inverted. My new bottom runners allowed it to land on
grass as well as protect it on high-alpha landings on pavement.
Although the winds were 10-15mph, we still managed to fly the
F-15 for about 8-10 minutes while performing aerobatics.
the video, you can see that due to the lack of rudder, the plane
must be lined up on both take-off and landing. Once the nose
wheel gets light, you lose steering until you can fly with ailerons.
When landing, you instinctively want to use rudder to correct
the slow speed alignment but have no control until the nose
touches down. Other than the lack of rudder control, this twin
EDF model is a great performing flier!
E-flite F-15 DF ARF was created for the ambitious sport scale,
advanced pilot looking for a versatile electric model capable
of park flying. I
would recommend that the hobbyist have intermediate building and
flying skills for a successful experience.
F-15 can be hand-launched and belly landed in grass or even landed
in grass with gear down. When using retracts, it will cover all
surface conditions and look better in the air. If you don't use
gear at all, remember to add the runners so the stabs don't get
pulled off when landing in grass. By lining the bottom of the
fuselage with clear shipping tape, it will protect the foam from
dents and scratches.
the F-15 does not have rudder control, the plane must be lined
up on both take-off and landing. Once the nose wheel gets light,
you lose steering until you can fly with ailerons. When landing,
you instinctively want to use rudder to correct the slow speed
alignment but have no control until the nose touches down. Other
than the lack of rudder control, this twin EDF model is a great
those that feel the need for more speed, one hop-up suggestion
is to replace the 6-blade stock rotors with the 3-blade rotors
used on the E-flite Super
Airliner DF ARF and use 4-cell ThunderPower 2200mAh
eXtreme V2 Lipo packs instead of the 3-cell 2100mAh LiPo packs.
Distributed Exclusively in the U.S.A. by:
Horizon Hobby, Inc
4105 Fieldstone Road
Champaign, IL 61822
Ph: (800) 338-4639
Toll Free: (800) 338-4639
Fax: (217) 352-6799
Distributed Exclusively in the U.S.A. by:
Horizon Hobby, Inc
ZAP 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.