Type: Sport model
Skill level: Intermediate
33. 5 inches
Weight: 14-17 ounces
Wing area: 161 square inches
Power system: 100- to 200-watt outrunner;
3S 800 to 1,300 mAh LiPo battery
This version of the Parallax features a fall camouflage
pattern that was created with water-based house paints.
Photos by James Lemon, Lee Ray, and Fitz Walker
speed range. Rolls are close to axial, but don’t appear that
way because neither the fuselage nor the pod is along the
centerline. Both parts take corkscrew paths through the roll
and make the maneuver seem more dramatic than it is.
When the airplane is upside down, the carefully
measured left motor offset becomes right offset, but the
propeller is still spinning in the same direction. Instead of
neutralizing the propeller’s destabilizing forces, they are
exaggerated! The same is true of airplanes with right thrust.
You likely will notice a tendency to yaw to the left
during inverted flight. Hold a little right rudder to
With the RimFire 370 motor spinning an 8 x 6 APC
propeller, the Parallax has plenty of power for quick climbs
and vertical maneuvers. Hammerheads to the right are easy
because the offset motor provides extra yaw authority. Top
speed is only moderate, but it’s well suited for park flying.
I’m still amazed by how slowly the Parallax flies under
full control. None of my other aircraft have snapped on me
when I got too slow. They simply drop the nose and keep
going. The Parallax is nothing more than a funny-looking
sport airplane. Don’t let its unorthodox looks scare you.
My adventures with the Parallax have satisfied my intent
to learn more about the intricacies of asymmetric airplanes.
I have also realized that understanding and utilizing
asymmetry opens countless new and exciting possibilities for
I am far from finished with this foray into a seemingly
untapped genre. If you’d like to join me, I think you’ll agree
that the Parallax is a good place to start.
Thunder Power RC
AMA Plans Service
(800) 435-9262, ext. 507
51 Model Aviation MAY 2014