MegaTech R/C Real World Helicopter Series Manuale Utente Scaricare il pdf (Pagina 44)

TEST

Northeast Sailplane Products

Electric slow-flyer ARF

by John Tracey

he Virus 400A is the largest of "^"

Northeast Sailplane Products'

(NSP's) series of Virus park flyers.

It's designed as a lightly loaded trainer, and it

has a huge, flat-bottom wing with giant barn-door

ailerons. A 57-inch wingspan adds to its stability. The unique

style of its swept-up wingtips and teardrop-shape fuselage combines to create an attractive plane. The tail boom is formed

of dual carbon-fiber tubes for strength and lightness. Virus 400A comes equipped with a Speed 480 motor and an MP Jet

3.5:1 reduction drive. It also comes with a propeller and landing gear with lightweight foam wheels. The plane is covered

with iron-on Solarfilm.

WING CONSTRUCTION

Building the Virus 4OOA is pretty basic;

the written instructions include diagrams

to help you build the model. A few details

are omitted from the instructions, but if

you use your common sense, you'll have

no problems building the plane.

The first step is to join the wing halves.

A small metal rod reinforces the joint

between the halves. The rod slips into a

small brass-tube sleeve in each wing half.

After using 5-minute epoxy to join the

wing, I wrapped the joint with clear tape

for extra reinforcement. When finished,

the wing is more than strong enough for

any maneuver this plane will do.

The "A" in Virus 400A stands for

"ailerons," and NSP is not kidding. The

huge barn-door ailerons account for 30

percent of the wing chord, and each is

controlled by an individual servo. One of

the advantages of this setup is that it

allows the ailerons to be mixed with a

computer radio and used as flaperons for

very slow landings and short takeoffs. I

recommend that you use servos with at

least 14 ounces of torque; I used Cirrus

CS-20BB Sub Micros. If you don't have a

computer radio, you can use a Y-connec-

tor to connect the aileron servos to the

62 MODEL AIRPLANE NEWS

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