OPERATING INSTRUCTIONS |
PART #1900 |
INTRODUCINGTHE 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) |
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Case Width |
1.98 inches |
[50.29 mm] |
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Case Depth |
1.42 inches |
[36.07 mm] |
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Case Height |
0.70 inch |
[17.78 mm] |
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Weight (w/o heat sinks) |
1.87 ounces |
[50.01 g] |
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On-Resistance @ Transistors |
0.005 Ω |
@ 25°C transistor |
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Rated Current |
150 amps |
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junction temp. |
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Braking Current |
50 amps |
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BEC Voltage |
5.0 volts DC |
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BEC Current |
0.5 amps |
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Wire Size (Battery/Motor) |
16 gauge |
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Wire Length (Battery/Motor) |
6 inches |
[152 mm] |
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Signal Harness Length |
6 inches |
[152 mm] |
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Transistor Type |
MEGAFET |
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PWM Frequency |
2500 hertz (nominal) |
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Part Number |
1900 |
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Brake Light Part Number |
5655 (optional accessory kit) |
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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.
STEP 1
CHANGING THE INPUT HARNESS
Included with the Explorer Sport is the Novak Input Plug SystemTM 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.
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) |
The locking tab must not extend |
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WHT = White wire terminal (signal)
BLK
RED
CAUTION Improper installation of these wires may cause damage to the receiver, servo, and speed control.
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 possible. Trail any excess wire off the top of the antenna mast. Do not cut or coil excess wire––range will be reduced.
NOVAK ELECTRONICS, INC.
18910 Teller Avenue
Irvine, CA 92715
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