Ofna Racing X2 TRUGGY Instruction Manual

THINGS REQUIRED FOR OPERATION

OPTION PART

3.5 cc (21 Class) ENGINE
REAR EXHAUST

OPTION THINGS NEED BESIDES THE KIT

OFNA/Picco
P7-EVO3
#51216

RADIO CONTROL UNIT

Note: Carefully read the instruction manual of your
2 channel radio controller before using.

SUITABLE SERVO SIZE

4 m

- 1m

m

6m

3

15mm - 21mm

29mm - 42mm

Bottle’s with spout
# 10160 - large 500cc
# 10161 - large 500 ccAuto Stop
# 10162 - small 250cc
# 10164 - CNC spout 500CC
# 10167 - CNC spout 800CC

Off-Road Starter Box, 12V motor
# 10250 - 1/8 scale Starter Box
# 10253 - 1/8 scale Starter Box w/ Panel
Off-Road Starter Box, two 550 motors
# 10248 - 1/8 scale Starter Box
# 10249 - 1/8 scale Starter Box,RTR
Optional Parts
# 92571 - Power Panel Glow Heater
# 92572 - Cable for Glow Plug

Radio must be set at neutral position
before installing in the kit.

SEQUENCE TO SET NEUTRAL

Install AA batteries in Radio.

Extend the antenna.(Transmitter)

Install batteries into Car receiver .

After installing the battery, connect the
battery box.

Extend the antenna. (Receiver)

Set the trim-lever at center.

Turn on the switch. (Transmitter)

Turn on the switch. (Receiver)

Make sure the servos are in command.

When the operation stick is in neutral,
servo horns must be in neutral as well.
*Adjustment can be made by re­ installing the servo horn.

1111

Turn off the switch. (Receiver)

Turn off the switch. (Transmitter)

12

13

Retract the antenna. (Transmitter)

Glow Plug Heat with Battery & Charger

# 10227....$$19.95

(please note OFNA Glow Heats available)

12V Battery for Starter Box
(must have)

AA Batteries ( 12 pcs ) for radio

More Optional Parts . . .

#10201
1700 NimH Battery Hump
Pack .. $34.95

# 10214 NiMh Battery Pack
Charger.. $7.95

# 51007 or 08 OFNA/Picoo
Glow Plug .. $13.95

TOOLS NOT INCLUDED IN KIT

Cutter

Phillips Type Screw Drivers ( L )

Curved Scissors

Brush

Phillips Type Screw Drivers ( S )

Needle Nose Pliers

Glow Plug & 17MM Cross Wrench

Knife

#10801 $6.95

Cross Wrench
#17109 $3.95

Instant Cement

Masking Tape

Paints

Grease

INCLUDED WITH KIT

7mm and 5.5mm
Hex Wrench

5mm
Hex Wrench

3mm
Hex Wrench

2.5mm
Hex Wrench

1.5mm
Hex Wrench

RTR KITS - REQUIRED FOR OPERATION

THINGS NEEDED

AA Batteries ( 12 pcs )

#10202
1700 Ni-Mh Hump Pack,

You will need to buy a few items to start the engine and run the car.

• Use 20% nitro CAR fuel. Do not use airplane or heli fuels, they will
over heat the engine.

• Buy LONG glow plugs, like OFNA/PICCO Plug (#51007 or 51008).
Use plugs WITHOUT idle bar. Do NOT use plugs, like the MC-59 or
OS-8

In your box you will find..

• #10163 - Bottle, spout top

• #10219 - Red “D” size glow heater

You need to get batteries for the radio transmitter and the car receiver packs.

• Radio TX needs (8) eight AA batteries.

• Car needs (4) four AA Alkaline., Alkaline type batteries will work, but braking will be
reduced and 30 minute life. The best for car, is to use a 5 cell hump receiver pack for
increased voltage and longer life..

Recommended Option:

You may want to upgrade the car battery pack to a Ni-Cad or Ni-Mh 5 cell
type(600AE). This will give more run time. OFNA #10202 1700Ni-Mh Hump Pack
and Ni-Mh Battery Charger #10214

10214
Over-nite
Charger

TOOLS NOT INCLUDED IN KIT,
BUT NEEDED TO MAINTAIN YOUR CAR.

Phillips Type Screw Drivers ( L )

Phillips Type Screw Drivers ( S )

Needle Nose Pliers

Knife

Instant Cement

Cutter

Curved Scissors
#91009 $5.95

Grease

Cross Wrench
#17109 $3.95

Glow Plug & 17MM Cross Wrench
#10801 $6.95

MUST READ THIS BEFORE RUNNING

Running a nitro kit is fun and easy, but to make this a safe • Clean oil and dirt from chassis with a degreaser like
and good experience you must observe a few rules. This
kit is extremely fast, easily over 40MPH, and can seriously
injure someone if you are not careful.

Where to run car?

• Any running area you choose must be dry. Do not run
car near any water or wet dirt.

• Do not run on public streets. It is very easy to have the
car run over or damaged by hitting the curb.

• Do not operate car in tight confined places. The car is
very fast and will easily hit something.

• Do not run near people or animals.
and will too easily hit someone.

• Due to noise, you will want to consider the surrounding
area when operating the car.

• Do not operate the car at night. You will not be able to
drive it without hitting something.

• Do not operate the car indoors. Engine exhaust is not
healthy.

Glow Fuel

• Glow fuel is poisonous!

• Glow fuel is flammable!

• Do not leave in fuel bottle with lid off at any time. fuel label for additional precautions.

• Do not use any fuel other than glow fuel in this engine.

First Time Starting the Engine

Caution! When starting engine make sure the following is
observed. • Always turn off the car BEFORE turning off radio.

• Set engine Master needle to 3 turns (rich setting)

• Do not do this alone, get an experienced friend to help at • DAMAGE DUE CAR RUN AWAY IS NOT A WARRANTY
first. ISSUE.

• Fill fuel tank, try not to spill fuel. Do not spill fuel on
receiver

• Hold car off the ground, so it will not runaway when first
started

• Turn on Radio and check the linkage before starting
engine.

• Turn on car receiver battery switch.

• Always have an air filter on the carburetor to keep dirt
out of engine.

Engine Break-in

• See Engine Page.

The car is very fast

Simple Green.

Precautions

• This kit is not a toy. Always run car with a second
person as a spotter and pitman.

• Hot Parts - The pipe, manifold, engine and head are very
hot and will cause burns.

• Rotating Parts - Keep hands away from the drive train,
wheels, and engine when engine is running.

• Radio - Check batteries life before running the car. If
radio does not have full control of the car with steering
and/or throttle/brake do not run until corrected. Failure to
correct this will result in possible injury and damage to the
car or property.

• Glow fuel - Do not leave the glow fuel unattended with
the lid off. Fuel contains Methanol and Nitro Methane
both are flammable and poisonous.

•Store fuel in cool ventilated location. Refer to the glow

• Car Fuel tank - Never store fuel in car tank, it will ruin the
engine if left in tank.

IF YOU DO NOT BREAK-IN ENGINE
CORRECTLY, MAINLY AT LOW RPM,
YOU WILL BREAK THE CONNECTING
ROD!

FAILURE TO NOT READ AND
FOLLOW BREAK-IN ENGINE

Emergency Stopping Engine When Running

• Remove air filter and cover carb. intake.

• Squeeze fuel line and hold until engine stops.

• With a rag, cover exhaust outlet.

Storing Car After Running

• Remove fuel from tank and fuel lines

• Turn off radio in car

• Put a few drops of after run in engine to keep it from
rusting.

INSTRUCTIONS WILL VOID
WARRANTY!

CHECK RADIO SETTING,
LINKAGE BEFORE STARTING.

PLASTIC PARTS USED

40538
DIFF. CASE

40668
FRONT AND REAR LOWER ARM

40669
BUMPER

40536
FRONT C HUB

30802
Throttle Linkage Plastic

40533
FRONT AND REAR GEAR BOX

40643
SHOCK PLASTIC PARTS

41053
FRONT UPPER ARM

41036
CENTER DIFF. MOUNT

40643
Shock Cap
Washer

40643
Shock Plastic
Ball End
(Short)

40534
ARM HOLDER

40643
Shock Plastic
Ball End
(Long)

41008
SHOCK PLASTIC PARTS

PLASTIC PARTS FOR USE

41034
CHASSIS BRACE

40540
REAR UPPER RIGHT/FRONT BUMPER

41052

SERVO SAVER

40542
WIN STAY

34026

PLASTIC PARTS SERVO FIXING

41033
STONE GUARD

16015
WING

40541
RECEIVER BOX

1

ASSEMBLY OF THE FRONT AND REAR DIFF.

Builds two differentials for front and rear.

BAG

NO.1

Step 1

40010

2.5x13.8mm Pin

94034
4x4mm
Set Screw

40009
P6 O-Ring

36053
8x16mm Ball Bearing

2

ASSEMBLY OF THE FRONT AND REAR DIFF.

30776
4x10mm Washer

.....x4

.....x2

.....x4

.....x4

.....x16

Oil

40596

40010

4x4mm

Step 1 Step 2

30776

40513

30774

36053

BAG

NO.1

40538

40513

Step 2

40009

3x12mm

40010

40513

40009

Tighten

41031

36053

40596

Oil

Tight the diff screws in this order.

1

3

94020
3x12mm
Flat Head Hex Screw

30774
4mm
Alum. Cross Pin

3

ASSEMBLY OF THE CENTER DIFF.

40010

2.5x13.8mm Pin

94034
4x4mm
Set Screw

40009
P6 O-Ring

.....x8

.....x4

Step 1

.....x2

.....x1

40605

.....x2

40010

BAG

Oil

NO.1

36053

40538

D

i f

.

Of

il

Step 2

40513

40010

40009

40011

4

*Put the Diff. Oil #7000 for front
and the #3000 for rear.
*Fill the Diff. case to approx. 80%
with the Diff. Oil.

40009

40518

2

36053

40605

36053
8x16mm Ball Bearing

.....x2

4x4mm

Oil

40513

1

4

ASSEMBLY OF THE CENTER DIFF.

Step 1 Step 2

30776
4x10mm Washer

.....x8

30776

40513

BAG

30774

NO.1

3x12mm

Tighten

Tight the diff screws in this order.

1

3

94020
3x12mm
Flat Head Hex Screw

30774
4mm
Alum. Cross Pin

5

ASSEMBLY OF THE FRONT GEAR CASE

40024
13x16x0.2mm Shim

36053
8x16mm Ball Bearing

.....x4

.....x4

Step 1

.....x4

40024

.....x2

Apply
Grease

BAG

40533

41032

40024

NO.2

36053

Di f.

f Oi

4x16mm

40011

l

**Use 10000 weight diff. oil in the
center.

Fill the Diff. Case to approx. 80%

with the Diff.Oil.

Step 2

36053

4

40533

2

94011
4x16mm Hex Screw

94015
4x35mm Hex Screw

6

ASSEMBLY OF THE FRONT ARMS HOLDER

NO.2

BAG

94036
5x4mm
Set Screw

94026
4x12mm
Flat Head Hex Screw

94027
4x16mm
Flat Head Hex Screw

.....x2

.....x2

.....x1

.....x2

.....x2

5x4mm

Adjust the backlash with
the shims.

S

c

ew r

C m

e t

en

41044

40589

4x35mm

40534

40688

A

A

NB. use only as matched set "A"
with"A"and "B" with "B".

A

Caster
(High/22 Degree)

4x16mm

B
Caster
(Low/20 Degree)

4x12mm

Caster angle can
be changed with
A or B

Steering
Characteristics

Steering response
becomes milder.

Steering response
becomes quicker.

2

7

ASSEMBLY OF THE FRONT SHOCK STAY

BAG

NO.2

Step 1

94003
3x10mm
Hex Screw

94009
4x10mm
Hex Screw

41009
3x28mm
Cap Screw

8

ASSEMBLY OF THE KNUCKLE ARMS

94034
4x4mm
Set Screw

94042
4mm
Nylon Nut

40527
Knuckle Arm
Bushing

.....x4

.....x4

.....x2

.....x2

.....x4

.....x4

41035

Step 1

40536

Tighten

Step 3

4mm

41010

BAG

41009

NO.2

40527

3x10mm

40691

Step 2

Step 4

Step 2

41009

4x10mm

3x10mm

36053

36053

3x10mm

40570

Assemble both right and left sides

Sc

Cemen

r

ew

t

40526

4x4mm

36055

36055

2.5x16.8mm
Pin

40528
King Pin Screw

9

ASSEMBLY OF THE KNUCKLE ARMS INTO FRONT LOWER ARMS

NO.2

BAG

30776
4x10mm Washer

94041
3mm
Nylon Nut

94042
4mm
Nylon Nut

36870
4x10mm
Set Screw

.....x2

.....x4

.....x1

.....x2

.....x2

.....x2

Tighten

4mm

40604

Insert two 30776 washer
into arm shaft before
assembly.

40528

4x10mm

30776

40668

40657

4mm

3mm

Assemble both right and left sides

4x10mm
Set Screw

*A 4x10mm set screw is used
to adjust ride-height.

Approx 2mm

40602
(Short)

3

10

ASSEMBLY OF THE FRONT UPPER ARMS

36850
7mm
Ball and Socket

.....x2

41053

BAG

NO.2

Assembly for both right and left side.

11¡G

Approx. 9mm

11

ASSEMBLY OF THE FRONT STABILIZER

94041
3mm
Nylon Nut

94008
3x25mm
Hex Screw

.....x4

.....x2

BAG

NO.2

40602

Insert the drive shaft
into cap joint before
assembly.

36861

36850

3x25mm

3mm

36690

Assembly for both right and left side.

Tighten

3mm

12

ASSEMBLY OF THE FRONT STABILIZER

NO.2

BAG

94035
3x8mm
Set Screw

94006
3x18mm
Hex Screw

.....x2

.....x2

Assembly for both right and left side.

Makes two rods for left
and righthand-side.

30341

30403

3x18mm

40540

3x8mm

40540

4

13

ASSEMBLY OF THE FRONT STABILIZER

NO.2

BAG

94033
3x3mm
Set Screw

94035
3x8mm
Hex Screw

.....x4

.....x4

3x8mm

3x3mm

3x3mm

0.5mm

40533

14

ASSEMBLY OF THE SERVO SAVER

Step 1

30776
4x10mm Washer

40073
4x8mm Ball Bearing

40024
3x8mm Washer

40037
Steering Plat Screw

.....x2

.....x2

.....x2

.....x2

3x10x1.0mm
Washer

41052

.....x2

3x3mm

40024

40024

BAG

NO.4

40677

3x8mm

40034

41040

41052

Oil

40533

Step 2

40685

40560

40037

30776

40073

3x10mm

* Notice the direction of the servo saver connecting plate.

Do Not
Over Tighten

Ensure
Free
Movement

40037

30776

40073

3x10mm

41052

15

ASSEMBLY OF THE SERVO SAVER

40568

40074

40074

40511

94041
3mm
Nylon Nut

40074
6x10mm Ball Bushing

94009
4x10mm
Hex Screw

94003
3x10mm
Hex Screw

Step 1

.....x2

.....x4

.....x2

.....x1

BAG

NO.4

4x10mm

5

4x10mm

40074

40074

40511

Step 2

3x10mm

41034

3mm

3mm