The GTB 2 ESC has a user-
replaceable input harness with
a 2mm mini plug on the ESC
end of it and the industry-
standard connector on the
receiver end of it.
The GTB 2
ESC works with all major radio
brand’s new receivers
[
Refer to
Figure 1 to see how to connect
the included user-replaceable
input harness].
However, some
very old receivers must have
the wiring sequence in the
plastic 3-pin JST connector
housing changed on the
receiver end.
NOTE: The receiver & servo electronics may be damaged
if the sequence is incorrect.
For instructions on changing the wiring sequence for older receivers, visit the
Novak Web site (www.teamnovak.com).
P3
step 1–connect input harness
step 3–Wire ESC to Motor
step 2–mount esc
Mount the speed control so that the power wires are as far away from other
electronics as possible. Make sure that the speed control or the power wires
will not interfere with any moving parts in the vehicle. Select a location that
has good cooling and allows airflow through heat sinks.
If the speed control gets air flow, it will run cooler; and that means, it
will be more efficient!
1. MOUNT SPEED CONTROL IN VEHICLE
Use the included double-sided tape to mount the speed control in vehicle
(do not use glue). Avoid contact with side walls or other chassis components
to avoid vibration damage.
Be sure receiver & antenna are mounted as far from ESC, power wires, battery,
& servo as possible--these components all emit RF noise when throttle is
applied. On graphite or aluminum chassis vehicles, it may help to place
receiver on edge with crystal & antenna as far above chassis as possible.
Note: Mount antenna as close to receiver as possible--trail any
excess wire off top of antenna mast (cutting or coiling excess
antenna wire will reduce radio range).
2. SECURE POWER TRANS-CAP MODULE TO CHASSIS
Use included double-sided tape, or a tie-wrap, to mount Power Trans-
Cap Module to the vehicle’s chassis or shock tower.
Module can also be
tie-wrapped along the power wires--this requires less space on the chassis
and provides good isolation from vibration
.
3. INSTALL ON/OFF SWITCH
Use the included double-sided tape, and mount the switch where it
will be easy to access--be sure to select a position where it will not get
damaged or get switched OFF during a crash or roll-over.
4. SECURE POWER WIRES
To avoid vibration damage, tie wrap the power wires together or to a
point on the vehicle.
The GTB 2 is compatible with all Novak 540 and 550-sized brushless sensored
motors. It is not compatible with brushed or sensorless brushless motors.
1. INSTALL PINION GEAR
Tighten pinion’s set screw on flat of motor shaft. Align pinion & spur gears.
2. ADJUST MOTOR FOR PROPER GEAR MESH
A.
Adjust the motor position for proper free play.
You
NEED
a small amount
of play between the pinion gear and the spur gear
(about the thickness
of a piece of paper)
–
check the free play at several positions around the
spur gear to ensure a proper mesh
(just in case the gears are out of round)
.
MAKE SURE THE PINION/SPUR GEAR MESH IS NOT TOO TIGHT!
If gear mesh is too tight, motor shaft breakage can occur.
B.
Tighten motor mounting screws–Avoid using excessive force that could
break screws or strip the threaded holes in motor.
3. CHECK FOR PROPER GEARING
The brushless motor & ESC should NOT be hotter than 160°F after a
5 minute run.
Lower the gearing until both ESC & motor are under this
temperature. The cooler the ESC runs, the better the performance of the system.
**Check out our NovaGear App, available on the Apple
TM
iTunes Store, for help selecting
the proper starting points for gearing in your brushless motor applications**
4. SOLDER MOTOR POWER PHASE WIRES TO MOTOR
A.
Cut the ESC’s
BLUE, YELLOW & ORANGE
silicone motor power wires
to the desired length, and strip 1/8-1/4” of insulation from the end of
each wire. Tightly twist the exposed strands of wire and tin with solder.
B.
Place the
BLUE Phase ‘A’
motor wire onto
motor’s ‘A’ solder tab
&
solder. Use soldering iron to apply heat to exposed wire; begin adding
solder to tip of iron & to wire. Add just enough solder to form a clean
& continuous joint from the plated area of solder tab up onto the wire.
C.
Solder the ESC’s
YELLOW Phase ‘B’
motor wire to the
motor’s ‘B’ solder tab
.
D.
Solder the ESC’s
ORANGE Phase ‘C’
motor wire to the motor’s
‘C’ solder tab
.
IMPORTANT NOTE:
DO NOT OVERHEAT SOLDER TABS
Prolonged/excessive heating of solder tabs (motor or ESC) will damage PCB.
Note: Make sure no wire strands have strayed to an adjacent solder tab, this will
result in short-circuiting & severe ESC damage, which will void the warranty.
5. CONNECT MOTOR SENSOR HARNESS TO ESC
Insert the 6-pin connector of the motor’s sensor harness into ESC’s sensor
harness socket—
connector is keyed and only inserts in one direction
. Novak
offers Shielded Brushless Sensor Harnesses in three lengths: 4”/100mm
(Novak #5351)
, 6”/150mm
(Novak #5352)
& 9”/230mm
(Novak #5353)
.
FACTORY-INSTALLED POWER TRANS-CAP MODULE REQUIRED
The factory-installed Power Trans-Cap Module MUST be used with brushless motors.
If Power Trans-Cap Module becomes dented or damaged, ESC failure can occur
--
replace immediately (Novak Kit #5678)
.
Longer wires will decrease performance
.
DO NOT USE SCHOTTKY DIODES
Schottky diodes must NOT be used with reversible ESCs.
Schottky diode usage will damage the ESC & void warranty.
MOTOR CAPACITORS NOT NEEDED
Novak brushless motors do not require external motor capacitors.
GTB 2 SET-UP PHOTO
(FIGURE 2)
ESC
ON/OFF
Switch
User-
replaceable
input signal
harness
(Ch.2)
Servo plugged into
steering ch. (#1)
P2
Set
button
Status
LEDs
Good Quality Radio System Suggested
bRUSHLESS mOtOr precautions
Cooling fan
(refer to Fig. 3)
FM Receiver
Trail excess wire off top
of antenna mast
Novak sensor-based
brushless motor
Blue motor
phase wire
(Phase A)
Yellow motor phase wire
(Phase B)
Orange motor
phase wire
(Phase C)
Sensor harness
Red power wire
(battery positive)
Black power wire
(battery negative)
Battery
connector
Power Trans-
Cap Module
(Novak #5678)
step 4–Wire ESC to Battery
With the higher performance of brushless systems, undesirable radio system
noise may occur when used with lower quality radio systems. 2.4GHz radio
systems are the best to use. FM radio systems are acceptable, as long as
the system is high quality.
AM radio systems are
not recommended.
Battery pack
(1-2S LiPo/LiFe or 4-6 cell NiMH/NiCd)
Battery pack, servo, receiver, and battery connector are not included.
For informative installation and how-to videos, visit the
Team Novak Channel on YouTube®.
Best to use
2.4 GHz
OK to use
FM
Do not use
AM
With the ESC connected to (at least) a charged battery pack, the receiver, and
the brushless motor’s sensor harness:
1. TURN ON THE TRANSMITTER’S POWER
2. PRESS & HOLD ESC’S ONE-TOUCH/SET BUTTON
3. TURN ON THE SPEED CONTROL’S POWER
With transmitter throttle at neutral, and still
pressing the SET button
, slide the ESC’s
ON/OFF switch
to ON position
.
4. CONTINUE HOLDING SET BUTTON UNTIL RED LED COMES ON
5. RELEASE SET BUTTON AS SOON AS LED TURNS RED
6. PULL TRANSMITTER THROTTLE TO FULL-ON POSITION
Hold it there until the
green status LED
turns solid green
.
Note: Motor will not run during programming even if connected.
7. PUSH TRANSMITTER THROTTLE TO FULL-BRAKE/REVERSE
Hold it there until the
green status LED
blinks green
.
8. RETURN TRANSMITTER THROTTLE TO NEUTRAL
The
red status LED
will
turn solid red
, indicating that speed control is at neutral
and that proper programming has been completed.
Blue & yellow LEDs will also be
on indicating Minimum Brake (blue) & Drag Brake (yellow) settings are at levels above 0%.
If transmitter settings are changed, the One-Touch Programming must be repeated.
If you experience any problems, turn off ESC and repeat One-Touch.
NOTE: Whenever the One-Touch Programming set-up is performed, the
speed control will automatically revert back to the factory-default settings.
STEP 5-one-touch programming
transmitter adjustments
Transmitter adjustments may not be required to properly complete the
One-Touch programming of the speed control. However, should you have
any problems completing the
ONE-TOUCH PROGRAMMING
, adjust the
settings on your transmitter as listed below, then repeat the
ONE-TOUCH
PROGRAMMING
as described in Step 5.
THROTTLE CHANNEL ADJUSTMENTS
A.
Set
HIGH ATV
or
EPA
to
100%
.
[amount of throw at full throttle]
B.
Set
LOW ATV
,
EPA
, or
ATL
to
100%
.
[amount of throw at full brakes]
C.
Set
EXPONENTIAL
to
zero
setting.
[throttle channel linearity]
D.
Set
THROTTLE CHANNEL REV. SWITCH
to
either
position.
E.
Set
THROTTLE CHANNEL TRIM
to
middle
setting.
[adjusts neutral position/increases or decreases coast brakes]
F.
Set
ELECTRONIC TRIGGER THROW ADJUSTMENT
to
70% throttle
and
30% brake
throw (or 7:3)
–best for racing ESCs
. Set to 50% throttle and 50% brake
for full time use with reverse to get the best performance in reverse.
[adjusts trigger throw electronic/digital pistol-grip transmitters]
G.
Set
MECHANICAL TRIGGER THROW ADJUSTMENT
to position with
2/3
throttle
and
1/3 brake
throw.
[adjusts trigger throw mechanical/analog pistol-grip transmitters]
•NOT ALL TRANSMITTERS HAVE ALL OF THESE ADJUSTMENTS•
w w w . t e a m n o v a k . c o m
FIGURE 1
Input harness plugged into Ch. 2 of the receiver.
To connect the GTB 2 to the main battery pack using connectors, we suggest
low-loss high power connectors like Dean’s Ultra Plug.
• Use polarized connectors.
Reverse voltage will damage ESC & void warranty.
• Use a female connector on battery packs to avoid shorting.
1. INSTALL BATTERY CONNECTOR
A.
Cut the
RED & BLACK
silicone battery power wire to the desired length, and strip
1/8”–3/16” of insulation from the end of each wire. Tightly twist and tin the ends
of the exposed wire with solder.
B.
Solder the ESC’s
RED
(+)
battery wire to the connector’s
POSITIVE (+)
contact.
C.
Solder the ESC’s
BLACK
(–)
battery wire to the connector’s
NEGATIVE (–)
contact.
D.
Cover the exposed solder joints with heat shrink tubing to prevent possible short circuits.
2. CONNECT ESC TO BATTERY PACK
Connect the speed control’s battery connector to a fully charged 1-2S LiPo,
1-2S LiFe cells, or 4-6 NiMH cells
(1.2 VDC/cell)
battery pack.
NOTE: If using NiMH or LiFe batteries, the Voltage Cut-Off Circuitry must be
programmed for the appropriate battery type (refer to GTB 2 Track Guide).