The DA- 70 engine provides more than enough power for hovering and all other 3-D maneuvers.
I balanced the Laser at the front edge
of the suggested center of gravity range,
and the control-surface throws were
adjusted to the manual’s recommended
settings. After I programmed the failsafe
in my Futaba 14SG transmitter, the
assembly was complete.
At the flying field, I gave the Laser
a thorough preflight inspection and
range checked the radio. The DA- 70
had not been run before arriving at the
field. The engine was easy to start, and
had good throttle response with the
factory needle-valve settings. After an
additional range check was performed
with the engine running, the airplane
was ready for its first flight.
The Laser tracked straight on takeoff
with little rudder input needed. Before
the throttle reached the halfway mark,
the airplane was airborne. It didn’t take
long to realize that the DA- 70 provided
more than enough power for the Laser.
All that was required for trim
adjustment was three clicks of up-elevator. Inverted flight required a slight
amount of forward stick, and knife-edge
flight in both directions required no
The Laser tracked straight on uplines
and downlines. I found the rolls were
axial with no aileron differential needed.
The Laser is excellent at performing
snap rolls; they stop instantly when the
control surface pressure is released.
The Laser flies Precision Aerobatics
maneuvers well and could be flown in
International Miniature Aerobatic Club
(IMAC) competitions, but it’s even
better at flying 3-D maneuvers. The
control surfaces are large and effective.
There is plenty of rudder authority
for knife-edge loops. Straight-and-level knife-edge flight requires a slight
amount of rudder input.
Upright and inverted Harriers are
stable with no wing rock experienced.
It’s amazing how stable the Laser is in a
hover and the DA- 70 provides plenty of
power for rocketlike pullouts.
I am very happy with the Laser. The
quality is excellent and the assembly is
fast and easy. It’s a great choice if you’re
looking for a model that flies like a larger
35% aircraft, but costs much less.
Andrew put a lot of time into the
Laser and it has paid off with a design
that’s equally at home flying Precision or
Wrong Way RC
SWB MFG., Inc.
74 Model Aviation NOVEMBER 2015 www.ModelAviation.com