OFNA Racing Jammin CRT .5 Mini User Manual

REV. 5-16-07

IMPORTANT-READ THIS BEFORE RUNNING

Running nitro kit is fun and easy, but to make
this a safe and good experience you must
observe a few rules. This kit is extremely fast,
easily over 65KPH, and can seriously injure
someone if you are not careful.

1. 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 be damaged by hitting
the curb.

Do not operate the car in tight confined

places. The car is very fast and will easily hit
something.

Do not run near people or animals. The car is

very fast and could easily hit someone if you
are not an expert driver.

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 safely.

｡ｷDo not operate the car indoors. Engine

exhaust fumes are dangerous.

2. Glow Fuel

Glow fuel is poisonous!

Glow fuel is flammable!

Do not leave in fuel bottle with lid off at any

time.

Do use any fuel other than glow fuel in this

engine.

3. First Time Starting the Engine

Caution!
When starting the engine make sure the
following is observed.

Set engine Master needle to 3 turns

(rich setting)

Do not do this alone, get an experienced

friend to help for the first time.

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 it first starts.

Turn onthe radio and check the linkage before

starting engine.

5. Emergency Engine Stopping

Remove air filter and cover carb. intake.

Squeeze fuel line and hold until engine stops.

With a rag, cover exhaust outlet.

6. Storing Car After Running

Remove fuel from tank and fuel lines

Turn off radio in the car

Put a few drops of after run in the engine to keep

it from rusting.

Clear oil and dirt from chassis with a

degreaser.

7. 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 battery life before running the

car. The 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. We strongly recommend
using a Failsafe.

Glow fuel-Do not leave the glow fuel

unattended with the lid off. Fuel contains
Methanol and Nitro Methane and is flammable
and poisonous.

Store fuel in cool ventilated location.
Refer to the glow fuel label for additional
precautions.

Fuel tank in the car-Never store fuel in car

tank, it will ruin the engine if left in tank.

Always turn off the car BEFORE turning off

the radio.

DAMAGE DUE CAR RUN AWAY IS NOT

A WARRANTY ISSUE .

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

Turn on car receiver battery switch.

Always have an air filter on the carburetor to

keep dirt out.

4. Engine Break-in

See section.

FAILURE TO READ AND
FOLLOW BREAK-IN ENGINE
INSTRUCTIONS WILL VOID
WARRANTY!

THINGS NEED BESIDES THE KIT

OFNA/Picco
JL Racing .12 Red Dot
Parts # 51124

Note: Pro kit does not include engine!

REQUIRED FOR OPERATION

Glow Fuel

20%

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

Mini-Start
#10252 Mini-Start Blue
#10254 Mini-Start Gray

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

Glow Plug Long Heat with Battery & Charger

# 10215....$27.95

(please note OFNA Glow Heats available)

RADIO CONTROL UNIT

SUITABLE SERVO SIZE

(TYPE A)

Futaba- S9650

AIRTRONICS - 94141Z

JR- STEERING ONLY- DS9411

28~32mm

15~17mm

35~36mm

(TYPE B)

Hitec- HS-5245MG

JR- DS3400G THROTTLE ONLY

28~30mm

15~16mm

31~33mm

More Optional Parts . . .

# 10200 5Cell AAA 800mah

Hump Pack .. $24.95

# 10214 NiHm Battery Pack
Charger.. $7.95

# 51007 OFNA/Picoo Glow
Plug .. $4.95

TOOLS NOT INCLUDED IN KIT INCLUDED WITH KIT

Diff. Oil

#

5

0

1.5mm Allen Wrench

2mm Allen Wrench

Phillips Type Screw Drivers ( L )

Phillips Type Screw Drivers ( S )

Cutter

Curved Scissors

Precision Caliper

Instant Cemment

Shock Oil

50/35 wt

Masking Tape

#

1

0

0

00

Needle Nose Pliers

Knife

Brush

Cross Wrench

Paints

2.5mm Allen Wrench

(special tool for all turnbuckles)

4'5'5.5'7mm Allen Wrench

PLASTIC PARTS FOR USE

40833
RECEIVER BOX

40836
FRONT AND REAR LOWER ARM

40839
FRONT C HUB

40834
SERVO SAVER

40835
DIFF. CASE

40837
FRONT UPPER ARM AND ARM HOLDER

40840
FRONT AND REAR GEAR BOX

PLASTIC PARTS FOR USE

30802
THROTTLE LINKAGE PLASTIC

40841
FRONT KNUCKLEARM

40843
REAR UPRIGHT

40842
WING STAY & BUMPER

40844
CENTER DIFF. MOUNT

40852
WING

SYMBOL USED THROUGHOUT THE INSTRUCTION MANUAL

40848
STABILIZER BALL END

37100
SHOCK PLASTIC

BAG

Sc e r
Ceme

w

t

n

Parts Bag Used

Cement

Oil

Degrease With
Motor Spray

Apply OilApply Screw

Do Not
Over Tighten

Apply
Grease

Do Not
Over Tighten

Apply Grease

Tighten

1:1

Tighten

True-To-Scale

Ensure
Free
Movement

Rotate
Direction

Ensure Free
Movement

Clockwise
Rotation

Contact
Adhesive

Rotate
Direction

Contact Adhesive

Anti-clockwise
Rotation

1

ASSEMBLY OF THE CENTER DIFF.

Step 1 Step 2

30779
4x10mm Washer

94046

2.6x10mm
Flat Head Screw

30773
4mm
Cross Pin

2

ASSEMBLY OF THE FRONT GEAR CASE

94034
4x4mm Set Screw

.....x8

.....x4

.....x2

Step 1 Step 2

.....x1

30773

40805

40840

30779

Tighten

4x4mm

40806

2.6x10mm

Tight the diff screws in this order.

40011

Dif

. O

ilf

w

e

e

r

mnte

Sc

C

1

4

Use 1000 weight diff. oil in the
center.
Fill the Diff. Case to approx. 80%
with the Diff.Oil.

3

2

37430
5x11mm Ball Bearing

38254
12x15x0.25mm Shim

94003
3x10mm Hex Screw

94043
3x35mm Hex Screw

3

ASSEMBLY OF THE FRONT SHOCK STAY

94003
3x10mm
Hex Screw

.....x2

38254

.....x2

.....x2

.....x2

Step 1 Step 2

.....x4

Apply
Grease

Adjust the backlash with the shims.

40804

38254

37430

3x10mm

37430

3x35mm

3x10mm

40840

40813

* Notice the direction of the
front lower arm holder in front.

1:1

Down

40842

40872

3x10mm

4

ASSEMBLY OF THE FRONT LOWER ARMS

94035
3x8mm
Set Screw

.....x1

* Notice the direction of the
front lower arm holder in rear.

Up

94004
3x12mm
Hex Screw

.....x2

1:1

40836

Ensure
Free
Movement

40825

* A 3x8mm set screw is
used to adjust ride-height.

3x8mm

3x8mm

40837

1:1

3x12mm

5

ASSEMBLY OF THE FRONT UPPER ARMS

Step 1

40838

30403

94004
3x12mm
Hex Screw

30403
6mm Ball

.....x2

.....x2

Anti-clockwise mark.

40813

40826

3x12mm

40837

40837

40837

40837

1:1

Ensure
Free
Movement

1:1

*Approx. 8.5mm

1:1

40825

40837

40824

Step 2

40836

Ensure
Free
Movement

1:1

Ensure
Free
Movement

6

ASSEMBLY OF THE KNUCKLE ARMS

Step 1

40818
King Pin Bushing

94003
3x10mm
Hex Screw

.....x2

.....x2

40841

Step 2

37430
5x11mm Ball Bearing

37390
2x10.8mm Pin

.....x2

40840

.....x2

37430

37360

40818

40818

37430

37390

Step 3

40875

40839

Ensure
Free
Movement

Assembly for both right and left side.

Step 4

3x10mm

S

c

re

C

w

em

en

S re

t

w

t

n

c

e

m

e

C

Do Not
Over Thigten

3x10mm

Do Not
Over Thigten

7

ASSEMBLY OF THE FRONT SUSPENSION ARMS

94001
3x4mm
Hex Screw

94005
3x15mm
Hex Screw

.....x2

.....x2

3x4mm

Assembly for both right and left side.

Ensure
Free
Movement

8

ASSEMBLY OF THE FRONT STABILIZER

94035
3x8mm
Set Screw

30403
6mm Ball

94005
3x15mm
Hex Screw

9

ASSEMBLY OF THE FRONT STABILIZER

94033
3x3mm
Set Screw

.....x2

.....x2

.....x2

.....x4

3x3mm

Scre w
Ce

m nt

40823

3x15mm

e

3x15mm

Scre

eCem

Assembly for both right and left side.

Makes two rods for left and right
hand-side.

40848

30341

30403

w
n

t

3x3mm

3x8mm

40848

94044

2.5x8mm
Hex Screw

.....x2

3x3mm

2.5x8mm

40840

40840

Ensure
Free
Movement

2.5mm

40817

10

ASSEMBLY OF THE SERVO SAVER

Step 1

37220
King Pin Bushing

.....x2

40810

40811

Step 2 Step 2

40834

Ensure
Free
Movement

40834

94002
3x8mm
Hex Screw

11

ASSEMBLY OF THE SERVO SAVER AND THE STEERING TIE-ROD

94002
3x8mm
Hex Screw

94040
3x8mm Washer

.....x2

.....x3

.....x2

37360

37360

3x8mm

Step 1

40834

3x8mm

35958

40834

40809

Scr
C en

37360

Servo saver spring preload setting.

ew

t em

3x8mm

r w e

Sc

e t

m n

Ce

3x8mm

35958

Step 2

*Approx. 0.5mm

37650

37220

3x8mm

40827

Do Not
Over Tighten

37220

3x8mm

35958
5x8x2.5mm Ball Bearing

12

ASSEMBLY OF THE SERVO SAVER ONTO THE FRONT GEAR BOX

94002
3x8mm
Hex Screw

.....x4

.....x2

40834

35958

40812

37650

1:1

*Approx. 37.5mm

3x8mm

13

ASSEMBLY OF THE REAR GEAR CASE

Step 1 Step 2

4x4mm

w

e

r

c

ment

S

Ce

3x10mm

40834

37430
5x11mm Ball Bearing

38254
12x15x0.25mm Shim

94003
3x10mm
Hex Screw

94043
3x35mm Hex Screw

14

ASSEMBLY OF THE REAR SHOCK STAY

94003
3x10mm
Hex Screw

.....x2

38254

.....x2

.....x4

.....x2

Step 1 Step 2

.....x3

38254

40840

40842

40804

37430

3x10mm

3x35mm

37430

40806

3x35mm

40840

40815

3x10mm

15

ASSEMBLY OF THE WING STAY

94003
3x10mm
Hex Screw

94004
3x12mm
Hex Screw

.....x2

.....x4

3x10mm

40842

40873

3x10mm

40842

40842

40842

40842

3x12mm

40842

3x10mm

16

ASSEMBLY OF THE WING STAY

94004
3x12mm
Hex Screw

94005
3x15mm
Hex Screw

.....x3

.....x1

Step 1 Step 2

3x12mm

40834

3x12mm

17

ASSEMBLY OF THE REAR LOWER ARMS

94035
3x8mm
Set Screw

94004
3x12mm
Hex Screw

.....x2

.....x2

40816

3x12mm

40836

Ensure
Free
Movement

40837

40825

1:1

3x8mm

40837

Ensure
Free
Movement

1:1

40836

3x15mm

*A 3x8mm set screw is
used to adjust ride-height.

3x8mm

18

ASSEMBLY OF THE REAR SUSPENSION ARMS

94001
3x4mm
Hex Screw

37430
5x11mm Ball Bearing

37390
2x10.8mm Pin

.....x2

.....x4

.....x2

3x4mm

40823

40875

Ensure
Free
Movement

Assembly for both right and left side.

40843

37430

37430

37390

40843

40840

19

ASSEMBLY OF THE REAR SUSPENSION ARMS

Assembly for both right and left side.

3mm

37100

30403
6mm Ball

94041
3mm
Nylon Nut

94005
3x15mm
Hex Screw

20

ASSEMBLY OF THE REAR STABILIZER

94035
3x8mm
Set Screw

.....x4

.....x2

.....x4

.....x2

1:1

*Approx. 48mm

3x15mm

3x15mm

Assembly for both right and left side.

30403

40828

37100

30403

30403
6mm Ball

94005
3x15mm
Hex Screw

21

ASSEMBLY OF THE REAR STABILIZER

94033
3x3mm
Set Screw

94044

2.5x8mm
Hex Screw

.....x2

.....x2

.....x4

.....x2

Makes two rods for left and right
hand-side.

30341

30403

40848

3x8mm

40848

40817

3x3mm

3x15mm

rew

Sc

nt

Ceme

Sc

C n

eme

re

w

t

3x3mm

2.5mm

3x3mm

40840

2.5x8mm

40840

Ensure
Free
Movement