ADVANCED SCALE MODELS A- 26 INVADER
THE FACT THAT THE
A- 26 IS A LARGE,
SHOULD NOT SCARE YOU
In the Air
Knowing the left turning tendencies of a propeller-driven airplane, I
expected the need for right rudder with not one, but two engines turning out front. I chose to use the ever-reliable Nelson Hobbies
Intelligent Glow Driver (IGD) system ( nelsonhobby.com) for each
engine as added security. Each unit features a microprocessor to control power to the glow plug based on heat rather than the traditional
throttle position, as is common with many units. I chose to make one
aborted takeoff run at 1⁄2 throttle to check controllability on the ground and note the acceleration. I let the airplane get light on the nose then
pulled the throttles to idle and taxied back for the
real thing. Much to my surprise, the airplane held
a nice, straight track and required average right
rudder input. The takeoff is very predictable with
a steady application of power and light back pressure during rotation and climbout.
bit of top side rudder as you roll through knife-edge, and forward
stick is a necessity as you roll through inverted. Remember, it’s a
bomber, not a fighter.
GLIDE & STALL PERFORMANCE Stalls are fairly predictable with the
gear and flaps extended and should stall straight ahead the majority
of the time, provided you do not induce any yaw. Clean stalls can be
a bit more abrupt and will more than likely drop
the left wing first. The A- 26 is equipped with flaps
and the optional, retractable landing gear. With
both extended, the airplane is very predictable
and slows quite well for landing. Depending on the
descent angle, power-on or power-off approaches
can both be accomplished with success. Keep the
nose pointed below the horizon on the approach
and you will be a hero every time.
General Flight Performance
STABILITY The fact that the A- 26 is a large, twin-engine warbird should not scare you. This airplane required very little trim adjustments on
the first flight. A bit of up-elevator and just a hint
of right rudder was all that was needed. Climbs,
turns and descents were easily controlled
throughout the entire speed range.
AILERON ± 1⁄2 in. (low), ± 5⁄ 8 in.
(high), expo: 30%
ELEVATOR ± 5⁄ 8 in. (low), ± 7⁄ 8 in.
RUDDER ± 1 in. (low), ± 15⁄ 8 in.
FLAPS 2 in. full down, 1 in. half
TRACKING Proper engine setup can make or
break how a twin-engine airplane tracks. If one
engine is not in sync with the other, a yaw is
induced and will cause the airplane to skid.
Special care was taken to set up the A- 26 and I
couldn’t be happier with its tracking. It tracks
extremely well both on the ground and in the air.
AEROBATICS Although a few rolls and loops
were accomplished, this is certainly not a 3D machine. This is a
high-performance bomber known for its speed and agility. If you
choose to roll the airplane, use the high rates and be sure to use a
This warbird is a blast to fly. Its low-altitude strafing runs are blistering fast and look and sound
incredible. The throaty roar and performance of
the two Magnum . 70 4-stroke engines gave the
A- 26 scale realism and performance.
Don’t be afraid to use the majority of the runway for your first takeoff. Let the airplane accelerate a fair amount before deciding to pull back on
the stick. Additional airspeed on the first
climbout will help you get a feel for the airplane
and give the rudder that extra bit of authority
should an engine cough or quit. If an engine failure does occur during any phase of your flight,
pull the throttle back as much as is practical to
reduce the yaw caused by the operating engine.
Level the wings using both aileron and rudder.
Make shallow turns to return the airplane for
landing. Flying a twin-engine airplane is a great experience and is
always a favorite at the field. Take your time during setup and you
will be rewarded with a true winner.
RADIO Airtronics RDS 8000
2.4GHz radio system, seven
Airtronics 94162Z High Torque
servos, two 94102Z servos for
ENGINE two Magnum . 72 4-
strokes with stock mufflers
FUEL Cool Power Supreme 10%
Nitro ( morganfuel.com)
PROP two APC 13x6