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.

CHECKING YOUR DUAL RATE

•To Check Your Dual Rate:

1. Turn your radio “ON” then turn “ON” your vehicle.

2. Check your steering on your radio by turning left and right several times.

3. Now turn your steering wheel all the way to the left or right whichever you choose
and hold it while pushing the “DEC” button ( see fig. 1) on the “ST-DR” and
hold it down, you should see that the wheel on your vehicle decrease in radius
(see fig. 2) and that the LED on “ST-DR” will start blinking Green and turn to a
blinking Red indicating it is at 0% or minimal steering radius

FIG. 1

INC

ST. D/R

DEC

FLASHING

.

4. To increase the dual rate turn the wheel left or right all the way and hold it while
pushing the “INC” button this will increase the turning radius of the and the LED
on ST-DR will start blinking Green and turning to the FIRST Blinking Red indicating
that the“Dual Rate” is at 80%, Holding the increase button past the FIRST Blinking
Red will turn to Blinking Green again then to the SECOND Blinking Red indicating
your “Dual Rate” is at 100%. When running your vehicle try to run the “Dual Rate”
at maximum radius (100%). Then if you have too much steering then decease as
needed.

FIG. 3

ST.DR

0%

%

0

1 0

INC

ST.D/R

DEC

1

0

0%

FIG. 2

0

0%

1

0%

1

00%

0%

%

0

10

1%

00

Steering Trim

Please turn on your transmitter, plug in your battery and turn on your esc while making the adjustment of these settings.

1.Connect the receivers, servos, and other components and then turn on the power switches of the transmitter and receiver.

2.Be sure the steering trim and throttle trim on the transmitter are at their neutral position.

3.When turning on your system make sure you turn on the transmitter first before turning on the receiver, while turning off the system
turn of receiver before turning off the transmitter.

•Steering Trim
Steering neutral adjustment can be made by moving the steering trim knob to the left or right.

•Finding Neutral position on the Steering

To find the center or neutral position on your transmitter, turn it on. Push the “ST-TRIM” left and notice the “ST-DR” will start flashing Green
then slowly turn to a flashing Red hold it there until you see a steady flashing Red, now you know you are at the end of left side trim. Now to
find the center or neutral position of the steering trim push the “ST-TRIM” to the right and hold it, you will notice that the “ST-DR” LED will start
flashing Green hold it their until you see that it will turn RED let go, now you are at center or neutral position, if you go past the RED light it
will start flashing GREEN again you are now off center or neutral and going toward the right.

•Racer Tip
Always check and be sure the servo is at it neutral position before installing a servo. Adjust the servo horn hole position and linkage so that
both are parallel. When a servo saver is used, place it as close to center position as possible. Be sure the steering trim on the transmitter is at
the neutral position.

•Trim Operation and Maximum Travel.
Changing the trim can effect the overall settings, when adjustments are made with the trims, please recheck your installation for maximum
servo travel. When Trim movement goes to extremes and your vehicle will not go straight.
That means if you make a lot of trim movement to get a servo to the neutral position, please reposition the servo horn or servo saver on the
servo and inspect your linkage installation.

1.When adjusting the ST-Trim button the ST-DR LED appears FLASHING GREEN.

2.When in the neutral position, the LED appears RED.

3.When in Max or Min position, LED appears FLASHING RED.

LEFT RIGHT

1

2

Throttle End Point Adjustment (EPA)

*Turn "BR" knob to set brake rate.

50%

0%

100%

100%

B

R

*We Suggest you to set the brake at 50%.
Too much brake may overheat and damage the
Electric Speed Controller and Motor.

*Turn "MAX" knob to maximize the throttle rate.

100%

M

X

A

Throttle Trim

•Throttle neutral adjustments can be made by moving the throttle trim to the left or the right.

•Racers Tip
When using a electronic speed control, please set the throttle trim to neutral and make adjustments to the speed control. On a gas powered
model, set the trim to the point where carburetor is fully closed in accordance with the engine instruction manual.

•Trim Operation and Travel
Trim adjustment will affect the overall servo travel, so please check the movement after the adjustment
When trim movement goes to extremes.

•That means if you have adjust the trim movement a lot to the neutral position, please recenter your servo horn closer to the neutral position
and inspect your throttle linkage.

Fig 5

Fig 6

Left

Reverse

Brake

Right

Forward

FLASHING

HOW TO NEUTRAL THROTTLE TRIM

•Finding Neutral position Throttle

1. Turn on transmitter

2. Push the “TH-TRIM” to the right (see Fig 5) and notice the “ST-DR” LED will start flashing Green (see Fig 6) then slowly turning to a flashing Red
hold it until you see a steady flashing Red, now you know you are at the end of the Forward trim.

3. To find the center or neutral position of the “TH-TRIM” push the “TH-TRIM” to the Left and hold it, you will notice that the “ST-DR” LED will start
flashing Green hold it their until you see that it will turn RED let go, now you are at center or neutral position, if you go past the RED light it
will start flashing GREEN again you are now off center or neutral and going toward the Reverse or Brake. If you past it don’t worry just push
it to the right a few click and you should be at neutral again.

Fail Safe Setup

•The HNT-3 radio system features a built-in fail safe to
function automatically set the servo to default when the
transmitter loses signal due to interference.
For your safety ,we recommend you to active the fail safe
function.

Fail Safe
Light

Fail Safe
button

Stop
(Neutral)

Fail Safe Process

1.Pair the transmitter and receiver before setting the fail safe(F/S) function. Turn on the transmitter power, then the receiver.

2.To set up fail safe(F/S) function with throttle servo is at neutral position, keep the throttle trigger at neutral position.

3.Press and hold the fail safe button on the transmitter for 5 second, until the fail safe LED light turn red. The fail safe(F/S) function is now
activated.

losing control of the car, the

CAUTION

•To avoid throttle servo position
must be at "neutral" when setting the fail safe(F/S) function.

• Fail safe is only good when you have power to the servo and
electronic speed control (ESC). Without power it can not go

back to neutral.

Handling Procedure For Batteries

Handling Procedure For Batteries

•Battery Replacement

1) Remove the battery cover from the transmitter by sliding it in the direction of the arrow.

2) Remove the used batteries.

3) Load the new 8 AA size alkaline, or Nickel Metal Hydride (NimH) rechargeable batteries,
and pay very close attention to the polarity marking on the batteries.

4) Slide the battery cover back onto the case.

5) If you use rechargeable batteries OFNA make this charger 10210 it will charge your Transmitter

9.6v at 100mA and Receiver battery 4.8v-6v at 100mA at the same time.

NOTICE THE DIRECTION OF BATTERY COVER

•Caution
Always make sure you reinsert the batteries are in the correct polarity order. If the batteries are loaded
incorrectly, the transmitter may not work or can be damaged.
When the transmitter is not used for a long period of time remember to remove the batteries. If the batteries
do happen to leak, clean the batteries case and contacts thoroughly and make sure the contacts are free of
corrosion.

•Battery Disposal
Some countries and state require special handling of used batteries, please contact the agencies responsible
for recycling hazardous wastes in your local area.

•Battery low voltage alarm indicator. LED Power light will flash.

Turning R/C Unit Off

1

*Turn off the receiver first, then turn off the transmitter.

OFF

CAUTION

2

*If you switch off the transmitter first
before the receiver, you may lose control
of the R/C car.

10210 - DUAL CHARGER, 4.8V-6V/9.6V TRANSMITTER AND RECEIVER

(Not included)

ON

FOR MORE SUPPORT PLEASE CALL US AT (949)586- 2910 OR CHECKOUT OUR WEBSITE
WWW.OFNA.COM .

B4222 ELECTRIC SPEED CONTROLLER OVERVIEW

Specification

1.Input Voltage: 6V ~ 7.4V DC

2.BEC (Battery Eliminator Circuit): 5V 1A

3.PWM (Pulse Width Modulation): 1KHz

4.Output : Rating 70A

Peak : 150A10 Secretary

5.Size : L33.4mm x W34.5mm x H 27.5mm

6.Weight:50g

7.Motor Recommended: 12T-27T

Default Setting

*Grey area are default setting from
manufacturer.

*Default setting of battery type is
Ni-Cd/Ni-Mh battery. Change your
battery type when you use other
types of batteries.

*Please refer to the electric speed
controller instructions for set-up
details.

RED(Power)

Power Plug

Set-Up Button

LED
Indication

BLACK(Power)

WHITE

LED indication: Red for selection of setting model, Yellow for selection of model parameter.

Setting mode
(Red)

Reverse Power

Start Power

OFF LOW MIDDLE HIGH

STANDARD

S

BLACK

Selection of mode parameter
(GREEN)

LOW MIDDLE HIGH

ORANGE(Motor)

BLUE(Motor)

Switch

RED

Drag Break

Battery Type

OFF

AUTO Ni-Cd / Ni-Mh

LOW MIDDLE HIGH

Li-Po 7.4V Li-Fe 6.6V

Changing ESC Parameter

Changing Reverse Power

•Press and hold the set button on esc then turn power on.

•Now indicating by 3 beeps “DDD”--- Release set button, LED turns Red and blinking one time,
now it’s at the 1st set mode (Reverse Power)

•Press and hold the set button again for one second, denoted by long beeps, release set button.
LED color turns from red to green . You are now in Parameter mode. Now each blinking green light
“HIGH” in REVERSE POWER parameter mode. (Refer to chart above). To change just quickly push
set button one time, now green light should be flashing once indicating reverse power is (OFF),
2 blinking light (LOW), 3 blinking light (MIDDLE), 4 blinking light (HIGH).
To save your setting push down the set button for 2 second long beep will sound indicating setting
is save.

Changing Start Power

•Press and hold the set button on esc then turn power on.

•Now indicating by 3 beeps “DDD”--- Release set button, the LED should turn Red and blinking one
time. Now quickly push the set button again, now it should be blinking 2 time indicating the “START
POWER” mode.

•To change the “Mode Parameter”Press and hold the set button again for one second, denoted by
long beeps, release set button. You are now in Parameter mode. Now each blinking green light
indicate what mode you in. As a default your esc should be blinking 4 time indicating you’re at

“HIGH” in START POWER mode parameter. With a “HIGH” start power mode you will have more low
end power and more wheel spin. So if you are on at loose track that don’t have a lot of traction you
might want to change the “START POWER” mode to Low 2 blinking green Led or Middle 3 blinking
green LED setting. (Refer to chart). Now to save your setting press the set button for 2 second, a
long beep will sound indicating setting is save now you can turn off your esc then turn on
Transmitter then turn on the esc to check your setting.

Changing Drag Brake

• Press and hold the set button on esc then turn on switch.

• Now indicating by 3 beeps “DDD”--- Release set button, LED turns Red and blinking one time,
now it’s at the 1st set mode (Reverse Power) now to go to “Drag Brake” quickly press the set button
again it should flash 2 time (Start Power) mode, press it again now it should flash 3 time
“Drag Brake” mode.

•To change the “Mode Parameter”Press and hold the set button again for one second, denoted by
long beeps, release set button. You are now in Parameter mode. Now each blinking green light
indicate what mode you in. As a default your esc should be blinking 1 time indicating your “Drag
Brake” is off. When your drag brake is off meaning when you are going forward and you let go
of the throttle your vehicle will still be rolling until you hit the brake. When you change the parameter
of the “Drag Brake” to Low, Middle or High is the amount of brake the esc will apply automatically
when you let go of the throttle. Low 30% 2 flashes, Middle 60% 3 flashes, High 90% 4 flashes of green
LED light. This is the amount of Drag Brake that will apply if you change the parameter.

•To save your setting press the set button and hold down for 2 second a long beep will sound
indicating your setting have been save. Turn off your esc, then turn on your Transmitter then turn
on esc and drive your vehicle and check your setting that you have changed.

Changing Battery Type

• Press and hold the set button on esc then turn on switch.

• Now indicating by 3 beeps “DDD”--- Release set button, LED turns Red and blinking one time,
now it’s at the 1st set mode (Reverse Power) now to go to (Battery Type) mode quickly press the set
button again it should flash 2 time (Start Power) mode, press it again now it should flash 3 time
(Drag Brake) press it again now you’re in (Battery Type) mode which should be blinking red 4 time.

• To change the “Mode Parameter”Press and hold the set button again for one second, denoted by
long beeps, release set button. You are now in Parameter mode. Now each blinking green light
indicate what mode you in. As a default your esc should be blinking 2 time indicating your’re
using “Ni-Cd/Ni-Mh” batteries. To change your battery type to “Lipo” quickly push the set button
again it should be blinking green 3 time, to change it again quickly push the set button it should be
blinking green 4 time indicating you’re in “Life” battery. (Refer to Chart on previous page).

• To save your setting press the set button and hold down for 2 second a long beep will sound
indicating your setting have been save. Turn off your esc, then turn on your Transmitter then turn
on esc and drive your vehicle and check your setting that you have changed.

TO: OFNA TECHNICAL SUPPORT

7 VANDERBILT, IRVINE, CA 92618

TODAY’S DATE: month________day______

1. Print out form.

2. Fill out the form completely.

3. Make a copy of purchase receipt. All replacements/repairs will not be processed,
unless accompanied by proof that item(s) was purchased in the last 30 days.

4. Call OFNA technical support at [phone] for assistance.

1. Your name
____________________________

2. Your address:
____________________________

6. Name of kit / part (on tag or end of box)

_____________________________

7. Kit/part number (on tag or end of box)

_____________________________

8. Purchased from (store name)

____________________________

3. Your Phone Number
(_____)______________________

_____________________________

a. Store phone: (_____) _________

b. _____Item was a gift?

4. Your e-mail address:
____________________________

9. If a part is missing form the kit, circle
the appropriate answers:

5. Summary of your problem (check lines):

a______part(s) is missing from my kit

b______part(s) seems to be defective
c______other problem

a. Yes / No: Is kit box damaged?
b. Yes / No: Factory Seal sticker was secure.
c. Yes / No: I am the original owner.
d. Yes / No: I have contacted the dealer first.

10. Describe your issue fully and include any part numbers:
____________________________________________________________
____________________________________________________________
____________________________________________________________
____________________________________________________________
____________________________________________________________
____________________________________________________________

Failure to fill out this form completely will cause a delay in processing!

11. Affix proof of purchase on second page. All replacement / repairs will not be processed

unless accompanied by proof that item(s) was purchased in the last 30 days.

A. If you lost the store receipt, ask the store if they will give you a new one.
B. We do not accepted the following as a substitute: Hand written receipts, ebay transaction numbers/forms or
credit card statements.

12. Send in form with your defective product, as instructed to do by the Ofna

technician,(Name)_________________ you spoke to. [phone]

Can’t find Proof of Purchase?