SIG MANUFACTURING P-51B MUSTANG ARF
I joined the two wing panels together and
installed the extra wiring for the wing servos.
The wing holds five servos, which consist of
two aileron, two flap, and one retract. On the
flaps I used a Cermark servo reversing Y-har-ness. The next step after the wing is the
fuselage and tail feathers. You’ll need to
watch the height of the elevator servo you are
using; if you use one that is too tall it will
push out the other side of the fuselage. If you
hear wood starting to crack, stop.
The hardware package is very complete
and includes wheels, spinner and engine
mount, along with a lot of Phillips screws,
so a good Phillips screwdriver is a must. Of
course you can replace them with your
favorite fasteners and driver. The screw hole
will need a drop or two of CA to keep them
from stripping out. The only drilling I had
ELEVATOR ± 11⁄ 16 in., expo: 23%
AILERON ± 7⁄ 16 in., expo: 23%
RUDDER ± 13⁄ 8 in.
The pilot and cockpit are also included in the kit
and add to the scale look of the plane.
to do during assembly was the engine
mount, control horns, throttle cable and
the cowl mounting screws.
The cowling is fiberglass and well
painted. Take your time when fitting and
cutting out the cowling for an exact engine
fit. The cockpit decals are great touches to
add some detail to your bird, so take the
time to use it. Adding a scale pilot helps too.
The last thing I did was use the decals
supplied. I finished off the Mustang using
the pictures on the box for placement.
In the Air
On a clear, sunny, southern California day I fired up
the YS engine and taxied out to the runway. With
one last check of the controls, it was time to throttle up. Adding throttle I started my takeoff and the
tail popped up after about 40 feet. In another 60
feet the plane was flying. Very little rudder was used
to keep the Mustang straight down the runway.
After three clicks of left aileron trim and two up we
With the gear up and the hammer down, the P-
51 flew rock solid with turns and rolls that were
quite smooth for a warbird. The slow flight was stable and when the P- 51 approached stall speed it
would let you know.
Landings are easy, and once the mains are on
the ground you need to let the air speed drop off so
tail drops or the P- 51 will want to take off again.
flaps down, the landings are much shorter.
General Flight Characteristics
RADIO Airtronics Stylus
Transmitter, four Hitec HS 205BB,
one Futaba FP-S1386g, one Hitec
HS 545BB, one Hitec HS-422,
one Hitec HS-615MG, one
Cermark Servo Reverser,
Airtronics 92765 FM receiver
( airtronics.net, hitecrcd.com)
BATTERY Cermark 5-cell
1800mAh receiver pack
ENGINE YS 91
PROP 15x8 APC ( apcprop.com)
FUEL YS 20/20 Powermaster
STABILITY The Mustang exhibited good stability at all speeds.
TRACKING Ground and in-flight tracking are predictable with minimum input. Ground handling was helped by having wheels toed in a little. I do not fly off grass but if I did, the only
thing I would keep my eye on is the landing legs because they bend easily.
My model weighs in at 8 1⁄ 4 pounds with 4
ounces of tail weight for balance. With the
control throws set at the factory-recom-mended settings and a little toe-in on the
main wheels, I was set. I found that this was
a smooth build and anyone who has built
one or two models will enjoy doing this kit.
The flying is the best part because it looks
like a fighter, but flies like a sport plane.
AEROBATICS This is a P- 51 so I did not fly it like an Extra 300. The rolls, loops and spilt-S’s looked and flew great, but my favorite is the low pass with one wing tilted up; it
GLIDE & STALL PERFORMANCE The glide and slow-speed performance are very predictable, and at slow speed the stalling wing will do a slow drop to let you know it needs
more speed. Adding power or getting off the elevator will straighten the stall right out.
Sig has done a very good job of giving us scale modelers a good-looking P-51B that flies
like a sport-pattern plane but has all the scale options like retracts and flaps. This model
would make a good addition to anyone’s hangar.