Model type: Semiscale warbird racer
Skill level: Beginner builder; intermediate to advanced pilot
Wingspan: 42. 2 inches
Wing area: 308 square inches
Wing loading: 22. 4 ounces per square foot
Wing cube loading: 15. 3 (racer)
Length: 38. 3 inches
Weight: 45 ounces
Power system: 3648-770 Kv brushless outrunner; 70-amp ESC with 5-amp
Radio: Six-channel minimum required
Construction: EPO foam
Covering/finish: Factory-painted graphics
Street price: $199.99
Motor used: 3648-770 Kv brushless outrunner (included)
Battery: Admiral 30C 4S 2,200 mAh LiPo
Propeller: 10. 5 x 8 four-blade propeller (included)
Radio system: JR X9503 2. 4 GHz DSM2; Spektrum AR7000 seven-channel DSM2 receiver
Ready-to-fly weight: 48 ounces
Flight duration: 5-7 minutes
• The crisp, clean factory-applied graphics scheme is detailed, accurate,
and looks fantastic.
• The stock power system and scalelike, four-blade propeller yield
satisfying speeds of approximately 80-85 mph.
• A complete inventory of spare parts is available online from MotionRC.
• Switching to a nonscale, two-blade propeller can boost the Strega to
• The space available in the battery bay requires use of dimensionally thin
4S 2,200 mAh packs.
• As configured out of the box, there is a limited turning radius when
AT A GLANCE ...
or two, even with many ARF-style kits.
Assembling the Strega took two
hours, including transmitter setup and
programming. The entire airframe goes
together using seven screws: four to
hold the wing in place, one for each
horizontal stabilizer half, and a tiny
screw to mate the two elevator halves.
The manual specifically calls out the
size of fastener needed for each step, and
spare fasteners of all sizes are included.
RocHobby also includes a small plastic
bag with spare fasteners, clevises, silicon
clevis retainers, etc.
Attaching the control horns to all
five control surfaces is probably the
most time-consuming part of the
assembly process. The manual goes into
commendable detail and thoroughly
covers the entire assembly process,
leaving nothing to chance. A separate
document covering ESC programming
and troubleshooting is also included in
the box. This is often omitted from foam
Finishing touches require using the
included tube of contact cement-style
adhesive. Foam wing fairings, used to
blend the TEs into the sides of the
fuselage, fit snugly into insets molded
into the fuselage sides. A small amount
of adhesive locks them into place.
RocHobby includes plastic wing vortex
generators and a pitot tube, which key
nicely into place, thanks to impressions
molded into the foam.
The included chrome spinner and
four-blade propeller dress up the
and then some!
and spinners are
fairly priced and
found the gap between the rear of the
spinner and the fuselage slightly wide at
3.0mm, but a quick trim of the motor
shaft using a Dremel tool would be an
easy way to decrease the gap.
MotionRC sent a pair of its Admiral
30C 4S 2,200 mAh LiPo batteries for
use in this review. Coupled with my
already existing inventory of 4S 2,200
mAh batteries, I envisioned extra-long,
uninterrupted flight sessions with the
Strega, without breaking for the flight
batteries to recharge.
Trial-fitting some of the batteries from
my own inventory revealed that the
Admiral LiPos are dimensionally svelte
in the thickness and width department.
Their dimensions, at 104mm x 33mm
x 31mm (L x W x H), allow them to fit
nicely in the available space.
Some of my existing LiPos (ElectriFly
30C at 101mm x 35mm x 35mm and
FlightPower 30C at 105mm x 36mm
x 33mm) are thick enough that the
canopy hatch would not fully seat in
place. Carefully removing a little foam
might rectify this, but the available
space in the battery bay is slightly tight.
I decided to use a full-range, satellite-receiver-equipped, seven-channel
receiver (Spektrum AR7000 DSM2) for
extra peace of mind, given the relatively
high speeds that the Strega is designed
to achieve. RocHobby provides a full
Included main gear
gear legs and gear
cover doors. The
tail wheel is not
76 Model Aviation APRIL 2014