Copyright 2014 Maxford USA
Page 15
of 24 pages
#S140627
a) ELECTRIC POWER POWER SYSTEM
(If you are installing a glow-engine power system, proceed
to “
b) GLOW ENGINE POWER SYSTEM
”
on page 17.)
1.
Test-fit your motor and its mounting hardware to the motor box.
NOTE: This ARF comes with an EP motor box measuring approx.
2
3/4
inches (70 mm) wide by 2
3/16
inches (5.5 cm) high and more than
6 inches (15 cm) deep. Depending on the size and capacity of your
batteries, this space space can be used to hold multiple LiPo batteries in series. It may be
necessary to insert and remove these batteries one-by-one through the narrow battery hatch.
2.
Position the propeller approx.
1/2
-inch in front of the cowl by sliding the motor mounting box
forward or backward within the fuselage.
3.
When satisfied with the fit of your motor and cowl, drill holes for
the motor’s wires and use
the hardware supplied with
your motor to attach the
motor to the motor
mounting box. Secure the
motor’s mounting bolts
with threadlock compound.
NOTE: The Maxford USA 638109
outer-rotor motor is a special design that is not only powerful, but is heavy enough to help achieve
the correct CG for large WWI ARFs. A reasonable-size motor such as this is much better than simply
adding nose weight. For these reasons, the following detailed instructions apply mainly to installing
a Maxford USA motor and 100A high-voltage electronic speed control (ESC).
a)
As shown at the right, hold the motor’s X-mount against
the front of the motor box and use the X-mount as a
guide to drill 4 mounting holes in the front of the motor
box. Also, use the large hole in the center of the X-mount
as a guide to enlarge the predrilled hole in the front of
the motor mounting box to fit the rear shaft of the motor.
b)
Drill holes for the motor’s wires.
c)
As shown at the far right,
position the X-mount from inside
the motor-mounting box and
attach the motor to the outside
front of the motor mounting box
by driving the 4 bolts provided
with the motor through the back
of the X-mount, through the
holes drilled in step “a)” and into
the threaded holes in the motor.
d)
Apply threadlock compound and
tighten these 4 mounting bolts securely into the motor.
e)
Depending on how much prop. clearance you want, you
may trim the back edges of the EP motor box
up to approx.
1/2-
inch to slide the motor-
mounting box further into the fuselage.
f)
Fit the bottom of the battery hatch to the top
of the motor
by trimming
the bottom
slat of the
battery
hatch’s grill.
