Novak GTB Profile Selection & Gearing Guide (with built-in Li-Po Cut-Off Circuitry) (55-1710P-1) User Manual

P■✄■p, Proper gear selection throttle profile selection, Switching between brushless-mode & brush-mode

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The GTB speed control is equipped with 6 user-selectable Throttle Profiles
to choose from, as shown below.

GTB THROTTLE PROFILES

BRUSHLESS PROFILES

BRUSH-MODE

w/Reverse

yes

Reverse%

100

n/a

Programmable

yes

Min.Drive%

Min.Brake%

20%

40%

20%

Drag Brake

20%

40%

n/a

off

Dead Band%

NOTE: GTB is factory set to Profile #1.

selecting brushless profil

selecting brushless profile

e s

:::::

all LEDs

With ESC on & connected to a charged battery

(transmitter ON or OFF)

1. IF TRANSMITTER IS OFF, DISCONNECT ESC FROM RECEIVER

To avoid possible radio interference from other transmitters, remove
the ESC’s input signal harness from the receiver.

2. PRESS & HOLD THE ESC’S ONE-TOUCH SET BUTTON

Continue to hold SET button on ESC until all 4 LEDs turns on.

Note: you will continue holding past the Blue, Blue & Amber, Blue & Green,

and then the Amber LED programming indicators in the ESC’s software.

3. RELEASE SET BUTTON AS SOON AS ALL 4 LEDs COMES ON

Once released, the 4 status LEDs will flash to indicate what Throttle
Profile is currently selected. The number of times the LEDs flash
indicates the Brushless Throttle Profile selection (1 of 5).

4. QUICK PRESS

(& release)

SET BUTTON TO CHANGE SELECTION

Each press will change to the next consecutive Throttle Profile.

(After

Profile 5 in Brushless-Mode, the sequence begins again at Profile 1)

Note: there is a time constraint during this selection process.

5. ESC STORES SELECTION & BEGINS TO EXIT PROGRAMMING

If SET button is not pressed for 3 seconds, ESC stores selected Profile in
memory, exits to neutral & is ready to go.

(LEDs turn off in a rolling motion

left to right, until just Red LED is on--Red & Green if no transmitter signal present)

REMEMBER: Whenever One-Touch set-up is performed, ESC automatically reverts to

factory default settings & the Throttle Profile reverts to #1 when in Brushless-Mode.

ATTENTION: Proper gearing is essential to getting the most performance from your GTB

and your brushless motor system when operating in the Brushless-Mode.

❚❙❏▼P■✄■P■●▼❙❘✄

✄❚❙❚■✄❑■❊▼✷❑

proper gear selection

throttle profile selection

8-2005

#55-1710P-1

As a general rule with the Velociti 5.5R Brushless motor on 6 cells, start
with a 3 tooth lower pinion gear than you would normally use with a
low-turn brush-type motor.
As a general rule with the Velociti 6.5R Brushless motor on 6 cells, start
with a 2 tooth lower pinion gear than you would normally use with a
low-turn brush-type motor.

*For other motors, refer to the motor’s included instructions for gearing recommendations.

Because of the broad power band of brushless, you can go 1 to 3 teeth higher
pinion than the above recommendations for more top speed, but note that
that going 3 or more teeth higher will produce excessive ESC heating. Be sure
to check the operating temperature of ESC after making gearing adjustments.
The GTB ESC is designed to operate comfortably from 160ºF-180ºF

(warmer

than typical brush-type ESC)

with motor temperatures also around 160-180ºF.

If you had a low turn modified brush-type motor in the vehicle before

switching to the GTB system, and you do not change gearing, you will be

over-geared and the vehicle will have slower acceleration!

Start within these final drive ratio ranges in the vehicle:

8.75–9.25 : 1

Velociti 5.5R in Touring Cars

(rubber tire)

7.75–8.5 : 1

Velociti 6.5R in Touring Cars

(rubber tire)

11.5–12.0 : 1

Velociti 5.5R in Off-Road Buggies

10.5–11.0 : 1

Velociti 6.5R in Off-Road Buggies

13.0 : 1

Velociti 5.5R in Off-Road Stadium Trucks

12.3 : 1

Velociti 6.5R in Off-Road Stadium Trucks

Higher final drive ratios will give longer run time at the expense of top speed. Lower ratios will
result in higher ESC temperatures--too low may result in overheating & thermal shut-down.

VEHICLE

SPUR

5.5R PINION

6.5R PINION

Losi XXX-BK2 Buggy

16-17

17-18

Losi XXX Buggy

15-16

16-17

Losi XXX-4 Buggy

15-16

16-17

Losi XXX-TMF2 Truck

15-16

16-17

Losi XXX-T Truck

14-15

15-16

Assoc. TC4 Sedan

20-21

21-22

Assoc. B4 Buggy

16-17

17-18

Assoc. B3 Buggy

15-16

16-17

Assoc. T4 Truck

15-16

16-17

Assoc. T3 Truck

14-15

15-16

Note: Above chart shows basic starting points for gearing on larger tracks with 6-cell
battery packs & standard size tires--See our website for extended gearing chart.

switching between brushless-mode & brush-mode

switching from brushless to brush-modE

:::::

With ESC off & connected to a charged battery (transmitter ON or OFF):

1. REMOVE BRUSHLESS 6-WIRE SENSOR HARNESS FROM ESC
2. DISCONNECT BRUSHLESS MOTOR FROM ESC
3. PRESS & HOLD ESC’S ONE-TOUCH/SET BUTTON
4. TURN ON THE SPEED CONTROL’S POWER

While still pressing SET button, slide ESC’s ON/OFF switch to ON position.

5. CONTINUE PRESSING UNTIL BLUE & RED LEDs COMES ON

Note: you will continue holding past the Red LED One-Touch indicator.

6. RELEASE BUTTON AS SOON AS BLUE & RED LEDs COMES ON

Blue & Red LEDs flash 9 times, then turn on solid after a few seconds.

7. QUICK PRESS

(& release)

SET BUTTON WHILE LEDs ON SOLID

ESC changes modes, and the Green LED will flash for a few seconds (with
Blue & Red LEDs still on solid) to let you know you have changed modes.

Note: there is a time constraint during this selection process.

8. ESC EXITS MODE SELECTION & RETURNS TO NEUTRAL
9. CONNECT BRUSH-TYPE MOTOR TO ESC

Refer to BRUSH-TYPE MOTOR portion of STEP 3 on main instructions

(pg.3)

for wiring.

switching from brush to brushlEss-modE

:::::

With ESC off & connected to a charged battery (transmitter ON or OFF):

1. KEEP BRUSHLESS SENSOR HARNESS REMOVED FROM ESC
2.

(*IMPORTANT*)

DISCONNECT BRUSH-TYPE MOTOR FROM ESC

separate the power phase wires that were shorted together at brush motor.

3. SEPARATE SHORTED MOTOR POWER PHASE WIRES
3. PRESS & HOLD ESC’S ONE-TOUCH/SET BUTTON
4. TURN ON THE SPEED CONTROL’S POWER

While still pressing SET button, slide ESC’s ON/OFF switch to ON position.

5. CONTINUE PRESSING UNTIL BLUE & RED LEDs COMES ON

Note: you will continue holding past the Red LED One-Touch indicator.

6. RELEASE BUTTON AS SOON AS BLUE & RED LEDs COMES ON

Blue & Red LEDs flash 9 times, then turn on solid after a few seconds.

7. QUICK PRESS

(& release)

SET BUTTON WHILE LEDs ON SOLID

ESC changes modes, and the Green LED will flash for a few seconds.

8. ESC EXITS MODE SELECTION & RETURNS TO NEUTRAL

Green LED will flash continuously at neutral (w/Red on solid) indicating that
sensor harness for the brushless motor is disconnected from ESC.

9. RE-CONNECT BRUSHLESS 6-WIRE SENSOR HARNESS TO ESC

Refer to BRUSHLESS MOTOR portion of STEP 3 on main instructions

(pg.2)

for wiring.

IMPORTANT PRECAUTION: Never connect a brushless motor’s 6-wire sensor harness to ESC when wired to a brush-type motor!

If ESC is powered on while in Brushless-Mode, and is connected to Brush-type motor {phase wir es shorted together} & a battery pack, a 6-wire

brushless motor’s sensor harness is connected to ESC, and ESC receives a transmitter’s throttle signal, severe ESC damage will occur.

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