T R O U B L E - S H O O T I N G G U I D E
L I - P O C U T- O F F C I R C U I T R Y
ROOSTER CRAWLER ESC – INSTRUCTIONS
Steering Channel Works But Motor Will Not Run
• Red LED flashing: Speed control has thermally shut down––Allow ESC to
The Rooster Crawler ESC has a built-in Novak Smart-Stop Li-Po Cut-Off
cool down––Use milder motor or smaller pinion gear––Check for adequate
Circuitry for safe, worry-free operation when using Lithium Polymer batteries.
cooling to ESC's heat sink.
S P E C I F I C AT I O N S
When the speed control is in Throttle Profile 2, the Smart-Stop Li-Po Cut-Off
• Red & Green LEDs alternately flashing: Smart-Stop Li-Po circuitry has
circuitry is active.
shut off throttle output––Use a charged Li-Po battery. Using Ni-Cd or Ni-MH
Input Voltage .....................4-7 cells
/ 2 Li-Po cells
(@1.2 volts DC/cell)
batteries with ESC in Profile 2––change battery type or ESC Profile.
The Smart-Stop Cut-Off circuitry constantly monitors the Li-Po battery's
Li-Po Cut-Off Voltage .................................................6.25 volts DC
pack voltage. When the pack's voltage begins to get close to the critical
• Check motor connections. Check motor and brushes.
safety voltage, the Cut-Off circuitry will start interrupting, or 'blipping' the
• Make sure ESC is plugged into the throttle channel of receiver. Check
ESC Footprint ............................................. 1.18" x 1.54"
throttle output. This 'blipping' acts as an early warning to you that the battery
wiring color sequence of receiver signal harness (Refer to Step 1).
.................................. 1.57 ounce
voltage is getting low, and that the throttle output to the motor will soon
• Possible receiver damage––Check operation with a different receiver.
be completely shut off. At this point, you should stop driving to save your
B.E.C. Rating ............................................. 6.0 volts DC / 5.0 amps
• Possible internal damage––Refer to Service Procedures.
battery from damage.
Receiver Glitches/Throttle Stutters During Acceleration
...........................14G Super-Flex Silicone
When the battery pack's critical safety voltage is finally reached, the Smart-
• Receiver or antenna too close to ESC, power wires, battery, or motor.
Rated Current ....................... 400A Fwd / 200A Rev
Stop Cut-Off circuitry will completely shut down the throttle output signal to
the motor to keep the battery voltage from dropping further (Red & Green
• Bad connections––Check wiring, connectors, & sensor harness.
On-Resistance ............... 0.0014Ω Fwd / 0.0028Ω Rev
LEDs will alternately flash--you will still have steering control). Re-charge battery
• Motor capacitors broken or missing––Refer to Step 3.
pack after Smart-Stop circuitry shuts off throttle.
......................... 27 turn
[@ 6 cells
• Excessive current to motor––Use a milder motor or a smaller pinion gear.
After a short resting period, the battery's voltage will rise back above the
• External Power Capacitor damaged/not installed––Replace Capacitor.
........................... 35 turn
[@ 6 cells
critical safety voltage, and the ESC will operate normally again for a short
Throttle Profiles .................................................... 2
[1 with Li-Po Cut-Off]
period of time. This is not good for the battery pack, as reaching the
• Input harness and servo wires should be bundled separately. Power wires
#55-1841-1 Ver. 2
critical safety voltage too many times can also cause damage to the
Switched Fan Output ...................................................6.0 volts DC
should be as short as possible.
cells. DO NOT CONTINUE TO RUN VEHICLE AFTER THE SMART-STOP
HAS SHUT DOWN THE THROTTLE OUTPUT FOR THE FIRST TIME.
Motor and Steering Servo Do Not Work
Attention crawler enthusiasts — The Rooster is ready to crawl!
• Check wires, receiver signal harness wiring & color sequence, radio
If Throttle Profile 2 is used with Ni-Cd or Ni-MH type batteries, the cut-off
system, crystals, battery/motor connectors, & battery pack.
circuitry will shut off the speed control's throttle output very early into the
The Rooster Crawler Brushed speed control has crawler-specific throttle profiles, and is specially designed with
battery pack's runtime, due to the different characteristics of these batteries–
• Possible receiver damage––Check operation with a different receiver.
built-in Smart-Stop Li-Po Cut-Off circuitry and a 6 volt / 5 amp BEC. The rugged ESC brings you 27-turn and
–Change ESC's Throttle Profile to Profile 1 for use with these batteries.
• Possible internal damage––Refer to Service Procedures.
higher motor handling, high-drag brake and is also the ideal partner for Novak's Crawler Brushed Motors.
Speed Control Runs Excessively Hot
The ESC also features Thermal Overload Protection, no Reverse Delay, Polar Drive & Digital Anti-Glitch circuitries for
• Gear ratio too low––Increase gear ratio (smaller sized-pinion gear).
cool & smooth operation and Radio Priority circuitry for the ultimate in control, right down to the end of the charge.
• If motor is damaged, try a different motor.
Add to this the user-replaceable power wires, power capacitor, & input harness, along with power output for auxiliary
A U X I L I A R Y F A N C O N N E C T I O N
Terra Claw Crawling (#3556)
cooling fans that turn on & off with the ESC's power switch, and the Rooster Crawler-Edition has it all!
Model Runs Slowly/Slow Acceleration
Forty-Five Crawler (#3545)
Fifty-Five Crawler (#3555)
To benefit from all of the technical features of the Rooster Crawler, PLEASE READ ALL INSTRUCTIONS
• Check battery connectors––Replace if needed.
The Rooster Crawler ESC also features a set of power output pins for running
• Incorrect ESC/transmitter adjustment––Refer to Step 4 & Transmitter
auxiliary cooling fans. This allows you to add cooling fans to either the motor,
O P T I O N A L A C C E S S O R I E S
P R E C A U T I O N S
the speed control, or both, and the best part is that they will automatically
• External Power Capacitor damaged/not installed––Replace Power Capacitor.
switch off when you turn off the speed control's power switch.
Motor Runs Backwards
These pins output 6.0 volts DC (the same as the BEC), so you will get
DISCONNECT BATTERIES WHEN NOT IN USE
REPLACEMENT POWER CAPACITOR
[Novak kit #5682]
• Motor wired backwards––Check wiring and reverse.
maximum output from your cooling fans.
Always disconnect the battery pack from the speed control when not
The Rooster Crawler-Edition ESC comes with a factory-installed Power Capacitor,
• Backwards motor timing––Reverse motor end bell.
in use to avoid short circuits and possible fire hazard.
and it MUST BE USED to maintain cool and smooth operation. A direct replacement
Power Capacitor is available in Novak kit #5682.
ESC Is Melted Or Burnt/ESC Runs With Switch Off
27T SINGLE & 35T DUAL MOTOR LIMIT!
Note: We highly recommend using Novak Power Capacitors, as we have done extensive testing & research
• Internal damage––Refer to Service Procedures.
Do not use a single motor that is lower than 27-turns. For dual motors
to find Power Capacitors with the very best quality factors––other capacitors with similar ratings will not
provide equal protection.
for crawling, the motor range is 35 turns or above. A lower turn motor
*For more assistance call our Customer Service Department or check our Web site.
may damage ESC.
SUPER-FLEX SILICONE 14G WIRE
[Novak kit #5514]
Novak Super-Flex wire for power wiring. 14 gauge silicone wire in kit #5514
WATER & ELECTRONICS DON'T MIX!
(36"black, 36"red, & 36"blue).
S E R V I C E P R O C E D U R E S
Never allow water, moisture, or other foreign materials to get inside ESC,
motor, or on the PC Boards. Water damage will void the warranty!
INPUT SIGNAL HARNESS
[Novak kits #5315 & 5320]
Before sending in your ESC for service, please review the Trouble-Shooting
NO SCHOTTKY DIODE!
User-replaceable input signal harness is available in both short and long lengths.
guide and instructions. Speed control may appear to have failed when
4.5" harness in Novak kit#5315, and 9.0" harness in Novak kit #5320.
Schottky diodes must NOT be used with the Rooster Crawler ESC.
other problems exist.
Schottky diode usage will damage ESC & void warranty!
[Novak kit #5620]
The Rooster's pin-out label located on the front lower section of the ESC's
After reviewing instructions, if you feel that your ESC requires service,
4 TO 7 CELLS OR 2-CELL LI-PO ONLY
Additional motor capacitors are available in Novak kit #5620.
case (under the pins, push button, & LEDs) shows the location and the polar-
please obtain the most current product service options and pricing by the
If using Ni-Cd or Ni-MH batteries, NEVER use fewer than 4 or more than
ity of the fan power output pins. They are the 2 pins on the front edge of
AUXILIARY COOLING FANS
[Novak kits #5647 & #5648]
7 cells (4.8-8.4VDC, 1.2VDC/cell) in the vehicle's main battery pack.
the circuit board--Positive (+) is on the left, and Negative (–) is on the right.
The Rooster Crawler comes with power output pins ready to add a cooling fan
WEB SITE: Print a copy of the PRODUCT SERVICE FORM from the
If using Li-Po batteries, ONLY use a 2-cell pack for the vehicle's main
The set of 3 pins behind them are for the user-replaceable input signal
that will switch on & off with the ESC's power switch.
CUSTOMER SERVICE section of the Novak Web site. Fill out the needed
battery & be sure to use Profile 2 with the built-in Li-Po cut-off.
harness, and the polarity of those is the same--Positive in the middle,
Novak 25x25x10mm fan with long leads for cooling motor is available in Novak kit
information on this form and return it with the Novak product that requires
Negative on the right, and the extra pin on the left is signal.
NO REVERSE VOLTAGE!
#5647. Novak 30x30x6mm clear fan that fits perfect over the ESC's heat sink and
has a connector already on its leads is available in Novak kit #5648.
The Novak 30x30x6mm clear cooling fan that comes on the GTB speed
Reverse battery polarity can damage ESC & void warranty. Disconnect
PHONE/FAX: If you do not have access to the internet, please contact our
control (Novak kit #5648) not only fits the size of the Rooster Crawler's
battery immediately if a reverse connection occurs.
customer service department by phone or fax as listed below.
heat sink perfectly, it also comes with the connector already on it for directly
POWER CAPACITOR REQUIRED
plugging in. Fans that do not have the proper connector on them, will need
WARRANTY SERVICE: For warranty service, you MUST CLAIM
An external power capacitor is installed and MUST be used with your
P R O D U C T W A R R A N T Y
a connector (one end of an old receiver input harness would work well), or will
WARRANTY on the PRODUCT SERVICE FORM and include a valid cash
ESC. Failure to use Power Capacitor will result in higher ESC operating
need to be soldered to the pins--Take extra care if attempting to solder to
The Rooster Crawler ESC is guaranteed to be free from defects in materials or workmanship for a period of 120 days from
register receipt with purchase date and dealer name & phone# on it, or an
temperatures & ESC damage.
the original date of purchase (verified by dated, itemized sales receipt). Warranty does not cover incorrect installation,
the fan power output pins--Do not overheat the pins or the circuit board,
invoice from previous service. If warranty provisions have been voided,
TRANSMITTER ON FIRST
components worn by use, damage to case or exposed circuit boards, damage from using fewer than 4 or more than 7
and do not allow any solder or wire strands to cause a short circuit with
there will be service charges.
Ni-Cd or Ni-MH cells (1.2 volts DC/cell) or fewer or more than 2 Li-Po cells input voltage, cross-connection of battery/
Always turn on the power of the transmitter first so that you will have
motor power wires, overheating solder tabs, reverse voltage application, damage resulting from thermal overload, damage
other pins or the heat sink.
•ESCs returned without a serial number will not be serviced under warranty•
from incorrect installation of FET servo or receiver battery pack, not using or incorrect installation of a Power Capacitor on
control of the vehicle when you turn it on.
ESC or from using a damaged Power Capacitor, using a Schottky diode, using non-Novak Power Capacitor, splices to input
or ON/OFF switch harnesses, damage from excessive force when using the One-Touch/SET button or from disassembling
NOVAK ELECTRONICS, INC.
case, tampering with internal electronics, allowing water, moisture, or any other foreign material to enter ESC or get
• Units that operate normally will have a service charge.
Always insulate exposed wiring with heat shrink tubing or electrical tape
onto the PC board, incorrect installation/wiring of motor/battery connectors, input plug plastic, or auxiliary cooling fan,
allowing exposed wiring, pins, or solder tabs to short-circuit, or any damage caused by a crash, flooding or natural disaster.
• Dealers/distributors are not authorized to replace Novak products thought
to prevent short circuits, which can damage ESC.
w w w. t e a m n o v a k . c o m
Because Novak Electronics, Inc. has no control over the connection & use of the speed control or other related
to be defective.
electronics, no liability may be assumed nor will be accepted for any damage resulting from the use of this product,
including battery packs. Every Novak speed control & motor is thoroughly tested & cycled before leaving our
• If a hobby dealer returns your product for service, submit a completed
Exposing the ESC's case to any type of solvents will damage the plastic.
facility and is, therefore, considered operational. By the act of connecting/operating speed control, user accepts
PRODUCT SERVICE FORM to the dealer and make sure it is included
(949) 833-8873 • FAX (949) 833-1631
all resulting liability. In no case shall our liability exceed the product's original cost. We reserve the right to modify
NO CA GLUE
warranty provisions without notice.
with the product.
©2010 Novak Electronics, Inc. • All Rights Reserved • No part of these instructions may be reproduced without the writ-
Exposure to CA glue or its fumes can cause damage to internal
Refer to Web site for service hours
• Novak does not make any internal electronic components available for sale.
ten permission of Novak Electronics, Inc. • Rooster Crawler ESC, Polar Drive Technology, Radio Priority Circuitry,
components of the speed control and result in premature failure.
& One-Touch Set-Up are all trademarks of Novak Electronics, Inc. • All Novak speed controls are designed &
and contact information
assembled in Irvine, CA, and are Lead-Free & RoHS compliant.