Robin S 50E
Model type: Electric sport scale
Skill level: Intermediate
Wingspan: 69 inches
Wing area: 841 square inches
Length: 56. 6 inches
with glider tow
Power system: 1,000-plus-watt
70-amp ESC; 6S LiPo
Construction: Laser-cut balsa and
Covering/finish: Oracover film
covered, available in
two color schemes;
painted cowl and
Street price: $429.99
Wing loading: 25. 2 ounces per
Weight: 9 pounds, 4 ounces
(with 6S flight
Motor: Hacker A50-16S V3
ESC: Hacker X70 SB Pro
Battery: AGA Power USA 6S
Propeller: Xoar 16 x 8 wood
Radio system: Spektrum DX9;
receiver; six Hitec
HS-5245 digital mini
servos; and two
Power output: 55 amps; 1,310 watts
Flight duration: 6 to 8 minutes
• Great scale looks with two
attractive color schemes.
• Includes radio-switched lighting kit
and a glider tow release.
• Enjoyable sport model that will do
an impressive array of aerobatics.
• Transports on the main landing
L- 13 Blanik Glider
Model type: Scale aerobatic
Skill level: Intermediate
Wingspan: 130. 7 inches
Wing area: 1,248 square inches
Length: 66. 9 inches
minimum; seven for
light plywood with
on the wings and
tail surfaces with a
Street price: $599.99
Wing loading: 8. 9 ounces per
Radio system: Spektrum DX18G2;
servos; and one HS-
Receiver battery: Taildragger RC
2,500 mAh A123
Flight duration: Varies depending on
• Distinctive-looking Red Bull color
• High-quality fiberglass fuselage.
• Fun to fly and nicely aerobatic.
• Includes flaps for landing in smaller
• The manual is mostly photographs
and lacks any control throw
AT A GLANCE ...
The Robin S includes a machined tow release located behind
the hatch. Full-scale tow airplanes tow from the tail, but the tow
release on a model should be located closer to the CG so that the
glider can’t inadvertently pitch its nose down during a tow.
There is plenty of room for equipment in the Blanik’s radio
compartment. The Spektrum receiver, TM-1000 telemetry unit and
vario sensor, 2,500 A123 receiver battery, and tow-release servo
fit easily. The bulbous nose allowed for 2. 5 pounds of lead shot
mixed with epoxy to fit as far forward as possible.
There is ample room to install the AGA Power 6S
battery where needed to achieve the recommended
center of gravity (CG). My wattmeter indicated 1,310
watts and 55 amps, allowing plenty of overhead for the
speed controller to operate.
The canopy is installed using two provided thumb
screws. With a top-mounted battery hatch that has
lots of room and is easy to remove, the Robin S rates
an A for ease of battery changing. Total build time is
approximately 12 hours.
Construction: L- 13 Blanik Glider
The Blanik arrived in a large box. The parts were
bagged and secured to prevent damage, and everything
was present and accounted for.
The Blanik’s wing and tail surfaces are built-up
balsa and light plywood. Everything is fully sheeted
and appears to be stout without being too heavy. The
fiberglass fuselage is painted to match the nice-quality
covering. I expected a carbon-fiber wing tube, but
the solid, 15mm carbon rod should be sufficient for
Just as on the Robin S, Zap CA glue, Z-Poxy, and RC-
56 canopy glue were used on the Blanik. RTL Fasteners
69 Model Aviation SEP TEMBER 2015 www.ModelAviation.com