9 introduced an update to their P-51 Trainer PTS, called the
MkII. This airplane is designed to be both a primary trainer
and a great second airplane. To fulfill the trainer roll,
the airplane is fitted with NACA droops to make the airplane
spin-resistant. When you are ready to take that "next
step", peel off the tape holding the NACA droops on -
and you have a sport scale airplane.
airplane is constructed from balsa and lite-plywood and it's
covered in Genuine UltraCote. The construction us very sturdy
with the landing gear mounts being exceptionally solid.
airplane comes very close to ready to fly out of the box,
with the engine and radio gear pre-installed. To get to the
field you will need to bolt the landing gear to the wing,
and install the horizontal stabilizer. This plane doesn't
require any glue to complete, everything is bolted together.
Mustang Mk II PTS (HAN4425)
58.25 in (1479.55mm)
50.39 in (1280mm)
Area: 648 sq in w/droops (41.80 sq dm), 626 sq in w/o droops
(40.39 sq dm)
6.57 lb (2.953.18 kg)
Spektrum 2.4GHz DX6i DSM2 radio with AR6200 receiver (installed)
Evolution Engines? Trainer Power System (installed)
Scheme Colors: Silver (HANU881), True Red (HANU866), Black
(HANU874), White (HANU870), Olive Drab (HANU904), Cub Yellow
for: $499.99 (Retail)
Hanger 9 Mustang MkII PTS comes well packaged in a full color box.
The engine and radio gear come pre-installed at the factory. As
you can see here, everything's included in the box.
airplane comes with a Spectrum DX6i radio. Also included is a large
sheet of decals, an instruction manual, an instructional DVD and
instruction manual is well illustrated and easy to read. The kit
also includes a very nice DVD for your TV that tells you how to
assemble the airplane. The DVD also goes over some basic flying
little is needed to complete the Hanger 9 MkII PTS:
(Phillips and flat head)
Knife (may be needed when installing landing gear)
Drill Bit (May be needed when installing landing gear)
socket or wrench
Iron (if your airplane has lots of wrinkles)
Standard Size JR/Spectrum Servos (Optional - for flaps)
Harness (Optional - for flaps)
fly your airplane at the field you will need:
of the box the airplane had a lot of wrinkles. I spent about an
hour with a covering iron shrinking up the covering on the wings
and fuselage. I was able to get all the wrinkles out of the wings,
but not out of the fuselage.
of the airplane goes very quick. Start by bolting the gear to the
bottom of the wing. Pay attention to which gear goes to what wing.
The wire from the landing gear goes on the outboard side, just like
the real mustang. The holes that come drilled for the landing gear
needed to be enlarged slightly, and I found it helpful to cut some
excess covering from the slot that the wire sits in.
gear did not sit flush in the slot in the wing, but it is very sturdy.
You will need to disconnect the rudder to install the horizontal
stabilizer. The horizontal stabilizer simply bolts onto the fuselage.
Notice that all the control surfaces use plastic clevesis. I would
highly recommend that you change these to metal clevisis. The plastic
clevisis will get brittle and break when the temperature drops or
when they age.
engine comes pre-installed in the fuselage. A plastic cap comes
installed on the end of the crankshaft to protect the threads. A
good size flywheel also comes on this engine, this helps the engine
idle lower and will make it easier for the new pilot to slow the
is a good time to check the muffler. During my first flight it came
loose. I would recommend that you remove the screws and apply some
red LockTite to them and reinstall. Installing the propeller is
easy. First slide the backplate on, then the propeller, washer and
nut. Last, install the spinner on the backplate.
complete the assembly you install the exhaust stacks using 4 screws.
The wings remove easy for transport to the field and are held in
with 2 screws.
The airplane ready to fly weighed 6lbs and 5oz. With the 3 Blade
Evolution Propeller, the thrust to weight ratio is 0.96 and with
the Master Airscrew 11 x 5 two bladed propeller, the ratio is 1.17.
engine comes broken in at the factory and should require little
or no tuning at the field. I tested several propellers in addition
to the stock Evolution 3 bladed 10 x 3.5 prop:
Pitch / Blades
x 3.5, 3 Blade
lbs 2 oz
oz (See Note 1)
x 5, 2 Blade
lbs 4 oz
x 6, 2 Blade
lbs 11 oz
x 6, 2 Blade
lbs 14 oz
(1) All idle measurements were taken with the idle adjusted
for the Master Airscrew 11 x 5 minimum RPM. When re-adjusted
the Evolution 10 x 3.5 propeller ran at 2,160 RPM with 4oz of
static thrust at idle. The engine idle was not adjusted between
propellers to provide comparative data. Lower idle RPM may be
achieved for each propeller.
(2) An APC 11 x 5 two bladed propeller was not available for
the review, but the data from the APC 11 x 6 propeller suggest
that the APC 11 x 5 may give slightly more static thrust over
the Master Airscrew 11 x 5 propeller.
Conditions: 95 F Outside Air Temperature, 65% humidity
3/4" back from the leading edge of the wing at the fuselage
Hanger 9 P-51 Mustang MkII PTS is not your average trainer. I was
skeptic that it would fly anything like a trainer. After the first
takeoff, all doubt was removed. With the NACA droops and low rates
the P-51 MkII is a tame flier. It easily flies big gentle patterns
so you can work on abusing that landing gear, opps - I mean work
on landings. I would recommend that you install the optional servos
recommend that if you are learning to fly, do two things. The first
is join your local club and find a qualified, experienced instructor.
The second is to get a computer simulator and practice every chance
you're ready to step up, go to a 2 blade propeller and spinner,
remove the NACA droops and kick up the control throws. Then the
Hanger 9 P-51 becomes a great second airplane. You will learn aerobatics
while perfecting those spot-landing skills with the flaps. If you
want to progress to a warbird, I feel that this airplane is a good
in any configuration (flaps up/down, droops/no droops) is the
same. Keep some rudder in to keep the nose straight and accelerate
until the tail lifts up, then gently add elevator to take off.
Climb with the 3 bladed propeller on a hot day is marginal,
so expect an extended takeoff roll and shallow climb.
Flight, Stalls and Spins:
flight with the flaps down requires some power to maintain level
flight. Stalls are mild in any condition (flaps up/down, droops/no
droops). Stall recovery is as easy as pushing the nose over.
The NACA droops do a good job of preventing spins. Without the
droops, the airplane will spin - so keep enough altitude when
practicing spins and use normal recovery techniques.
Aerobatics (Aileron / Elevator):
will want to remove the NACA droops for aerobatics, since they
slow the airplane down. With the droops off, you will need some
up elevator when inverted and throughout the second half of
a roll. With the MA 11x5 2 bladed propeller, loops from level
flight were round when the airplane had some time to build up
speed at level flight.
Aerobatics (Aileron / Elevator / Rudder):
this airplane will do a limited amount of advanced aerobatics,
it's no 3-D airplane. It does have a fairly long tail moment,which
makes it very stable. This will allow you to practice some of
the basic pattern maneuvers.
I trimmed the airplane on the initial flight, I did not change
it. You don't need to retrim the airplane much or at all with
the flaps down, as long as you slow down before putting the
arounds are predictable. If you have the flaps down, wait until
you have established a positive climb before retracting them.
in this airplane are very easy for a tail dragger. Thanks to
the long tail and the forward swept gear, this P-51 is easy
to land. See the video for some landings (and bounces!).
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Hanger 9 P-51 Mustang MkII PTS really surprised me in its ability
to be a primary trainer. With the removable NACA droops, it allows
you to remove the training wheels and step up to a sport scale airplane.
It's a great looking airplane, and certainty the best looking trainer
on the flightline at my field.
that you need to fly this airplane is included, ok almost everything.
You have to add fuel and some field equipment. Once you pull this
airplane out of the box, you'll have it ready for the field in less
time than it takes to charge battery. I also liked the large hatch
to access the radio gear. This is a nice feature if your working
on the radio gear, or simply checking the fuel.
found the landing gear and gear mounts to be exceptionally solid.
That's an excellent feature when you going to use the airplane to
learn how to land. You can see in the video that I didn't "baby"
the gear, and it held up with no damage and no bent parts.
would recommend that you plan on installing two additional servos
(not included) for the optional flaps. You will need two standard
size servos and a Y harness. The airplane comes from the factory
with ground adjustable flaps, but I really liked having the ability
to adjust them in flight. These make the airplane a pleasure to
fly and the two position switch on the Spectrum DX6i radio is easy
to reach. Having flaps will let you descend steeper on approach,
which is especially nice if you need to clear obstacles when landing.
are a few areas that I think can be improved on with this airplane.
When I removed the airplane from the box, the first think that I
noticed is that there were a lot of wrinkles in the covering. The
airplane is covered in genuine UltraCote, so shrinking them up was
not a big issue. I was able to completely remove all the wrinkles
from the wings, but was unable to completely shrink all the wrinkles
from the fuselage.
a minute and a half into the first flight the engine lost power
when the muffler came loose. I dead stick landed the airplane into
the tall grass, and the only damage was a broken propeller. Before
starting your engine, remove the muffler screws and apply some drops
of LockTite onto the threads of the screws and reinstall them.
found the stock 3 bladed propeller performed marginally as can be
seen in the video. This propeller is designed to limit the forward
speed of the airplane to make it easier to learn how to fly. While
it did this effectively, it also wouldn't give your instructor on
the buddy box a lot of options to get you out of a tight spot. All
of my flying was done on a hot day (95 F+), so performance in the
cooler weather should be considerably better. Most of my flights
were flown with the Master Airscrew 11 x 5 propeller.
found the propeller to be brittle and more easily damaged than a
Master Airscrew or APC propeller. If your propeller contacts anything,
stop and completely and carefully inspect it for damage by removing
it from the airplane. I had an issue with the propeller failing
after the propeller dug into the dirt while taxing. After checking
the propeller for damage, I flew the airplane and about 3 minutes
later, one propeller blade separated in flight! Always practice
good propeller safety and stay out of the plane of the propeller!
first time I took this airplane to the field, I conducted a range
check per the manual. The range check failed at 1/2 the distance
that is called out in the manual. I later found out from reading
in the manual that the transmitter has two settings for power output,
European and US. After checking my transmitter, I found that it
comes from the factory set on European. After changing the setting
in the transmitter, the airplane passed the range check without
airplane comes with plastic clevisis installed on the control surfaces.
I used these for the review, but from experience I would recommend
that you replace them with metal clevisis. These plastic clevisis
break more easily than the metal ones, typically once they've become
brittle from age or cold temperatures. The rest of the hardware
in this kit is very nice.
Hanger 9 P-51 Mustang MkII PTS is a solid airplane as both a primary
trainer and a sport scale airplane. I found the airplane to have
several great features, including the flaps, large radio hatch,
NACA droops and the Spectrum Radio. I had a lot of fun flying this
airplane in both the trainer and sport configurations. I wish my
trainer looked this good when I was learning to fly as this airplane
sets itself apart on the flightline.
Horizon Hobby, Inc.
ATTN: Hangar 9
4105 Fieldstone Road
Champaign, IL 61822
Phone: (217) 352-1913
Toll-Free: (800) 338-4639
Support Phone: (877) 504-0233
Sales Phone: (800) 338-4639
Chris Batcheller Video:
Chris Batcheller Photos:
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.