Included with the Explorer Sport is the Novak Input Plug
System
TM
to convert the Futaba J style signal harness to
be compatible with Airtronics, KO, Kyosho, JR, and Hitec
radios. Refer to Figures 1 through 3 to change plug.
STEP 1
CHANGING THE INPUT HARNESS
Airtronics (A) KO Kyosho (KYO) JR/Hitec
FIGURE 1
With a small standard screwdriver, press on
each of the three metal prongs until the wires are easy to
remove. Remove wires.
FIGURE 2
With the screwdriver, carefully lift up each of the
metal locking tabs to the angle shown.
FIGURE 3
Insert each pin into the correct plug slot. Each
pin should "click" into place.
(Airtronics plug shown)
WHT
= White wire terminal (signal)
BLK
= Black wire terminal (negative)
RED
= Red wire terminal (positive)
CAUTION
Improper installation of these wires may cause damage
to the receiver, servo, and speed control.
The locking tab must not extend
outside the plastic plug housing.
STEP 2
HEAT SINK INSTALLATION
Two Micro Fin™ heat sinks have been included to provide
proper cooling for the Explorer Sport. The speed control
will operate cooler and run faster when the heat sinks are
installed.
DO NOT
use the Explorer without the heat sinks,
as this voids the warranty and may cause speed control to
overheat and thermally shut-down.
1. INSTALL THE LEFT HEAT SINK
Place the speed control on a flat surface and press one
heat sink
(longer fins go down onto transistor tabs)
onto the left bank of 3 transistor tabs.
NOTE: Do not use too much force when installing the
heat sinks because you can damage the transistors or other
components on the PC board. Never use a vise or pliers to
install the heat sinks.
2. INSTALL THE RIGHT HEAT SINK
Press the second heat sink (again long fins down) onto
the right bank of 3 transistors tabs.
The heat sinks should press onto the transistor tabs with a
snug fit. If heat sinks are installed upside-down or shifted
off-center, they will be too loose and will not work properly.
3. DO NOT USE GLUE
Do not use glue or other types of adhesives to attach
the heat sinks to the transistor tabs.
4. DO NOT SHORT CIRCUIT HEAT SINKS
The two separate banks of transistor tabs or heat sinks
should never contact each other or other conductive
objects (metal, graphite, etc.), or they will short circuit
and damage the speed control.
STEP 3
MOUNTING INSTRUCTIONS
1. DETERMINE THE BEST ESC MOUNTING LOCATION
The speed control should be positioned away from
the receiver and antenna as shown in set-up photo on
back page. Choose a mounting position that will keep
power wires away from the receiver and antenna.
Choose a position that will provide maximum airflow
through the heat sinks to allow for proper cooling.
2. INSTALL THE SPEED CONTROL
Use the included double-sided tape to mount ESC.
3. INSTALL THE ON/OFF SWITCH
Determine a convenient place to mount switch where
it will be easy to get to. Mount switch using a piece of
double-sided tape. If your car has a switch mount
molded into the chassis, remove the two phillips head
screws from the switch housing and reassemble
switch into chassis using the 3/8" long screws that are
included in the speed controls accessory kit. Note the
direction of
ON/OFF
cover and reverse it if necessary.
4. INSTALL THE RECEIVER
Mount the receiver as far from the speed control,
motor, power wires, battery, and servo as possible.
These components all emit radio noise when the
throttle is being applied. If your car has a graphite or
aluminum chassis, place the receiver on its edge with
the crystal and antenna as far above the chassis as
possible. The receiver can also be mounted on the
shock tower. Mount the antenna close to the receiver
and trail any excess wire off the top of the antenna.
5. INSTALL THE ANTENNA
Mount the antenna as close to the receiver as pos-
sible. Trail any excess wire off the top of the antenna
mast.
Do not cut or coil excess wire––range will be reduced.
PART #1900
OPERATING INSTRUCTIONS
INTRODUCING
THE
EXPLORER
The Novak Explorer Sport ventures to bring race winning
high frequency design to the economical price range of
the sport level ESC (Electronic Speed Control). Equipped
with Novak's revolutionary Polar Drive Technology™ the
Explorer runs faster and longer than conventional speed
controls. The Polar Drive circuitry provides smooth throttle
response and improved radio system performance. The
Explorer also has built-in brake light circuitry to power two
external LEDs for added realism with Formula One and
touring cars. (Two high power brake LEDs and versatile
mounting hardware are available in Novak kit #5655)
Novak's Solid State RVP™ provides rugged protection
against reverse voltage application without the need for
fuses, while the built-in BEC (Battery Eliminator Circuit)
powers the radio system with no external receiver battery.
Other features include the Novak Input Plug System™ for
compatibility with all major radio systems, and purple
anodized Micro Fin™ heat sinks. While factory installed
JST/Tamiya style battery connectors and bullet style motor
connectors make for quick and easy installation of the
speed control into your car or truck.
SPECIFICATIONS
Input Voltage
6-7 cells (1.2 volts DC/cell)
Case Width
1.98 inches
[50.29 mm]
Case Depth
1.42 inches
[36.07 mm]
Case Height
0.70 inch
[17.78 mm]
Weight (w/o heat sinks)
1.87 ounces [50.01 g]
On-Resistance @ Transistors
0.005
Ω
Rated Current
150 amps
Braking Current
50 amps
BEC Voltage
5.0 volts DC
BEC Current
0.5 amps
Wire Size (Battery/Motor)
16 gauge
Wire Length (Battery/Motor)
6 inches
[152 mm]
Signal Harness Length
6 inches
[152 mm]
Transistor Type
MEGAFET
PWM Frequency
2500 hertz (nominal)
Part Number
1900
Brake Light Part Number
5655 (optional accessory kit)
@ 25°C transistor
junction temp.
EXPLORER ACCESSORIES
BRAKE LIGHT KIT
The Explorer Sport speed control comes equipped with
built in circuitry to power two high power brake light
LEDs. Novak's optional Brake Light Kit (#5655) comes
complete with two premium quality LEDs and versatile
mounting brackets to mount the brake lights behind the
taillight section of the car body or onto most any vertical
or horizontal surface on the chassis.
MOTOR CAPACITORS
To prevent radio interference problems, you must have
three 0.1µF capacitors properly installed on every motor.
Included with the Explorer Sport speed control are three
0.1µF (50V) capacitors for one motor. Additional 0.1µF
(50V) capacitors are also available in Novak kit #5620.
Please refer to Step 4 on the back page for proper motor
capacitor installation instructions.
COOLING FAN
An optional ESC Cooling Fan (kit #5645) is available for
use with the Explorer ESC to provide extra cooling for
heavy load applications with limited air circulation. If the
ESC gets so hot that it goes into thermal protection
mode, we recommend using the optional Cooling Fan.
PRECAUTIONS
• READ INSTRUCTIONS CAREFULLY BEFORE USING!
• WATER & ELECTRONICS DON'T MIX! Do not operate
model in or around water. Never allow water, moisture,
or other foreign materials to get inside the ESC.
• 6 OR 7 CELLS ONLY Never use more than 7 or less than
6 sub-C cells (1.2 volt DC/cell) in the main battery pack.
• MOTOR CAPACITORS REQUIRED Three 0.1µF (50V)
ceramic capacitors must be properly installed on every
motor to prevent radio interference.
• DON'T LET TRANSISTOR TABS TOUCH Never allow the
two transistor tab banks or the heat sinks to touch each
other or any exposed metal, as this will create a short
circuit and damage the speed control.
• DISCONNECT THE BATTERIES Always disconnect the
battery pack from the speed control when not in use.
• TRANSMITTER ON FIRST Always turn on the power of
your transmitter first so that you will have control of the
radio equipment when you turn on the speed control.
• DON'T GET BURNT! Transistor tabs can get hot, so be
careful not to touch them until they cool.
• INSULATE WIRES Always insulate exposed wiring with
heat shrink tubing to prevent short circuits.
RADIO INTERFERENCE
The high frequency switching operation of electronic
speed controls can generate radio interference. Here are
some common causes of radio interference problems:
• CAPACITORS NOT INSTALLED ON MOTOR Electric
motors generate radio noise that can interfere with the
receiver. To prevent radio problems, every motor must
have three 0.1µF (50V) ceramic capacitors installed on
it. Refer to Step 4 on back page for proper installation.
• RECEIVER/ANTENNA INCORRECTLY MOUNTED The
receiver and antenna should be mounted as far from
the motor, power wires, battery, and servo as possible,
as these components all emit radio noise. On graphite
or aluminum, place receiver on edge with the crystal
and antenna as far above the chassis as possible. Mount
the antenna close to receiver and trail any excess wire
off the top of antenna. Do not cut or coil excess wire!
• MOTOR BRUSHES WORN As motor brushes continue
to wear, excessive motor noise will be generated. To
avoid radio interference, worn motor brushes should
be replaced. The motor commutator may also need to
be cleaned or trued and can be machined to help the
motor run more efficiently.
NOVAK ELECTRONICS, INC.
18910 Teller Avenue
Irvine, CA 92715
