OFNA Racing 40991 User Manual

HNT-3 2.4GHz RADIO SYSTEM OVERVIEW

HNT-3 Transmitter

*Carefully read the instruction manual of your
radio controller before using and keep it in a
safe place as a reference introduction in the
future.

1

2

3
4

5
6

7
8

10

12

14

1.Transmitter Antenna

2.Servo Reverse Switches

3.TX RF Module And Binding Button

4.Power LED

5.Power Switch

6.Steering Dual Rate Trim LED

7.External Charging Jack

8.Fail Safe Button

9.Throttle End Point Adjustment Knob

10.Steering End Point Adjustment Knob

11.Steering Dual Rate Adjustment Button

12.Steering Trim

13.Throttle Trim

14.AUX Channel Switch

9

11

Receiver Connection Diagram

Bind Button

Battery Port

Auxiliary Channel

Throttle Channel

Steering Channel

15

16

13

17

15.Steering Wheel

16.Throttle Trigger

17.Battery Cover

Specification Data

•Transmitter

Channels: 3
Frequency: 2.4Ghz
Power DC: 9.6V - 12V
Measurement: 280 x 190 x 85mm
(Packing Meas.)
Net Weight: 510g

Specification:

Channels:3Ch
Frequency:2.4GHz
DC:12V/ 8 cell AA Type
Battery
Meas.:310*170*75mm
Net weight:530g

•Receiver

Channels: 3
Frequency: 2.4Ghz
Power DC: 4.8 - 5.6V
Net Weight: 13.5g

CAUTION

• To use your Radio with your models correctly and safely, read this manual carefully and keep it in a
safe place for future reference.
Warning:

1. This product is only equipped for radio controlled cars;

2. The usage of this product should be approved by local law or regulations;

3. We will not be responsible for the damages caused by unauthorized modification, adjustment
or replacement of parts on this product;

4. The manual may be change without prior notice. Please contact us if you have any corrections
or clarifications that should be made in the manual;

• Before turning on the transmitter, make sure the transmitter batteries are fresh. The voltage of the
transmitter batteries is should never be lower than 9.6V, and please check and confirm that the servos
are all well and properly connected.

• Keep the radio system away from moist, high temperature and strong vibrations. Do not clean radio
with any solvent.

• Make sure antenna does not touch anything when power switch is turned on. Do not leave this radio
in reach of small children.

• Please use this product according to your local laws and regulations, we are not responsible for any
incidents or damages.

2.4Ghz Binding

•Binding your RX to Transmitter
Turn on the transmitter, then turn on your ESC (speed control)
or receiver power switch. Then push the bind button located on
the receiver until LED light turns solid green which is about 3 sec.
Green which means the binding is successful. After that, it’s un­ necessary to bind again.

LED

BIND

Caution:
When binding make sure that the RX and TX is no more

than a yard or 3 feet from each other, also no other similar FHSS
system or device is being use within 10 yard of your RX and TX
or it could accidentally pair up or bind with your vehicle.

Reducing Power

• Reducing output power setting.

• Push the RF-TEST button, while holding it down turn on your transmitter,
the “ST-D/R” LED “RED” should light up. Now your output power of the
transmitter is reduce to a lower mode of 18dbm, which reduce the range
of the radio but save in battery consumption
.

•Now press the RF-TEST button again, the LED on the “ST-D/R should turn off, and
output power becomes normal 20dbm which can control your vehicle with more
range but more battery consumption.

STEP 1

STEP 2

Power Switch (turn on)

RF-TEST (Press and hold)

AUX Channel Function (CH3)

•This switch control the transmitter’s third channel. A servo plugged in this Channel 3 will move to full travel in one
direction when the switch is in the “AUX” position, then move the switch to the “OFF” position the servo will move
in the opposite position . This channel can be use to turn on all sort of things in your vehicle. For example, lights,

on board camera etc..... l

Steering Dual Rates Setup

INC

ST.DR

DEC

ST.D/R SW

•DEFINITION:

Steering Dual Rate (ST. DR): Is the adjustment that allows the dual rate value
(maximum servo travel) to be increased (INC) or decreased(DEC) with in a range
of 0% to 100% of the steering servo. This functions very useful in a race
conditions as it allows you to tailor the steering radius and sensitivity for the
current track conditions.

•ADJUSTMENT:

1.Press and hold the “INC” (Increase) button until the LED on the “ST.DR” blinking green
into a blinking red indicating maximum turning radius or value of 100%.

2.Press and hold the “DEC” (Decrease) button until the LED on the ‘ST.DR” start blinking green
and goes to a blinking red LED indicating minimum turning radius or value 0%.

Steering End Point Adjustment (EPA)

Steering End Point Adjustment (ST.EPA)

Left turn

Straight (neutral)

L R

Right turn

L R

*L/R Steering end point adjustment
(ST. EPA)knob.

Max Max

Steering
Stopper

Use the "EPA" to adjust steering tie-rod to
the steering stopper.

*After adjusting "D/R" to Max position then adjust
both "ST EPA" knob to the correct position as
picture shown.

*The steering stopper may vary for different
brand models. Follow the steering stopper
set-up for max position. The steering servo
may be damaged if it is overload.