Great Planes Spitfire 25 GP/EP ARF - GPMA1478 - Manual (Page 21)

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14. Apply a coating of epoxy to the flat side of the ESC tray
and let it cure undisturbed. The epoxy will provide a smooth
surface for the double-sided tape to adhere to. When the epoxy
is dry, glue the tray onto the top edge of the cooling hole cutout
as shown.
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15. Feed the receiver and battery leads on the ESC
through the left hole in the second former. Connect the ESC
to the receiver and to the motor. If using the recommended
ESC and brushless motor, three 4mm male to 3.5mm
female bullet connector adapters will be needed. Great
Planes offers these adapters for purchase using part
number (GPMM3123). Secure the ESC to the ESC tray with
a piece of the included double-sided foam servo tape.
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16. Now is a good time to test the rotation of the motor
before the cowl and prop are installed. Use your radio
system and battery to temporarily power the motor. If the
motor rotates clockwise when viewed from the front, correct
the rotation by choosing any two of the three motor leads
and reverse their positions.
D. When satisfied, slide a piece of heat-shrink tubing over
the adapter up to the base of the male bullet connector.
Use a heat gun or micro torch to shrink the tubing onto the
adapter. If necessary, trim the excess heat-shrink tubing
from the end of the female bullet connector.
C. With the female bullet in the open end of the male bullet
and the cutouts in both connectors lined up, apply solder
with flux into the cutouts. When applying the solder, it
should appear to flow into the joint and around the ends of
the connectors until the joint is coated. Excess solder is
not necessary as it will simply gather at the bottom of the
joint. Use alcohol to wipe the joint clean.
B. Insert the 3.5mm female bullet connector (the end with the
cutout on the side) into the open end of the 4mm male bullet
connector. Shown in the photo above is the X-Acto
® Extra
Hands Double Clip (XACR4214). This tool is extremely useful
for small soldering tasks.
A. In order to make three adapters for one complete brushless
motor system, you will need Great Planes Gold Plated Bullet
Connectors Female 3.5mm (GPMM3113), Great Planes Gold
Plated Bullet Connectors Male 4mm (GPMM3114), electrical
solder with flux, and a soldering iron.
MAKE BATTERY CONNECTOR ADAPTERS
If the Great Planes 4mm male to 3.5mm female bullet
connector adapters are not available, or you would like to
make your own, the assembly procedure and order
numbers for the individual parts are provided below.