The author is mentally repeating the all-important launch mantra: Follow through!
Follow through! Follow through!
the Hadron has the forward velocity required to
give the control surfaces authority. I normally use
the elevator trim to dial in a little reflex when
flying a delta-wing model, but I found that this was
unnecessary with the Hadron. Although I started
with a 3S battery, speed junkies may want to jump
straight to the 4S pack!
After the Hadron was trimmed out, I selected the
mix that uses both the rudder and the vectored thrust
unit. The Hadron is almost completely neutral when
flipped on its back. Inverted flight required slight
Much of the buzz about this model is its ability to
routinely perform some of the slickest flat spins you
may ever see. The assembly manual suggests that one
way to toss the Hadron into the spin cycle is to go
to full throttle and establish a vertical climb. When
in the vertical, slam both control sticks upward and
outward. I did that and the Hadron instantly began to
After a few revolutions, I released the right stick but
maintained the position of the left stick. The Hadron’s spin
accelerated to a dizzying rate. The Hadron looked like a
Chinese throwing star that somehow got stuck in a vacuum,
furiously spinning in place with no forward momentum!
I exited the spin by releasing the rudder input, which
eventually allowed the Hadron to drop its nose and fly out
of it. Subsequent trips though the heavenly blender at times
saw the Hadron reluctant to stop spinning. Applying opposite
rudder seemed to expedite canceling the rotation, but the
Hadron surprised me a few times by exiting the maneuver
inverted, which is why this model is best suited for advanced
The Hadron is stable and predictable, but the extreme
maneuvers made possible by the thrust-vectoring unit will
definitely get the adrenaline going and evoke bouts of nervous
laughter as you work to transition back to normal flight!
This model’s performance envelope is notably wide.
Although it rips across the skies with a vengeance when the
throttle is at 100%, it can also be flown at the opposite end of
the throttle quadrant!
I was duly impressed at the Hadron’s slow-speed flight
capabilities. My first few landings saw me coming in too high
with too much energy. The Hadron floated right past, reluctant
to drop to the grass!
Its stall is soft—almost nonexistent. I was able to spot land
it at my feet by killing the throttle while still a distance out
on final, and then slowing it with liberal applications of up-elevator.
This style of landing is probably best for those who plan
to fly the model at paved fields. The near lack of forward
momentum as the Hadron plops to the ground should nicely
preserve the AeroCell underbelly.
The Hadron is an exciting, high-performance flying wing
that includes several notably engineered and innovative
features that I would like to see become standard on all foam-composition airframes.
Having index marks molded into the foam for battery
placement and CG verification is definitely a nice feature.
Attaching the nose cone with magnets instead of glue makes
replacing it quick and easy. Although the use of a thrust-vectoring assembly is not a new idea, Flyzone got it and the
versatile 3S- or 4S-compatible brushless power system right.
The Hadron’s flight envelope is broad enough that a newer
pilot could handle it at lower throttle settings when flying
on a 3S battery. It exhibits impressive slow-speed stability
in this configuration. The 500-watt, 4S Hadron is probably
best reserved for pilots who can handle high-speed flight and
potentially disorienting spinning and tumbling maneuvers. This
flying wing excels at both!
A technical bulletin has been posted on the Flyzone website
in connection with the aft end of the plastic turtledeck, at the
point where it abuts the vectored-thrust unit. Inspect this area
of your model to ensure that the three motor wires are not
catching on the edge of the turtledeck’s plastic inlet shroud.
If necessary, a sharp hobby blade can be used to carve a slight
chamfer into it.
Eagle Tree Systems
58 Model Aviation MARCH 2014