Nitro RC Car Safety Guide
Nitro RC Car Safety Guide
WWW.OFNA.COM
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.
and good experience you must observe a few rules. This
Precautions
kit is extremely fast, easily over 40MPH, and can seriously
• This kit is not a toy. Always run car with a second
injure someone if you are not careful.
person as a spotter and pitman.
Where to run car?
• Hot Parts - The pipe, manifold, engine and head are very
• Any running area you choose must be dry. Do not run
hot and will cause burns.
car near any water or wet dirt.
• Do not run on public streets. It is very easy to have the
• Rotating Parts - Keep hands away from the drive train,
car run over or damaged by hitting the curb.
wheels, and engine when engine is running.
• Do not operate car in tight confined places. The car is
very fast and will easily hit something. • Radio - Check batteries life before running the car. If
• Do not run near people or animals. The car is very fast
radio does not have full control of the car with steering
and will too easily hit someone.
and/or throttle/brake do not run until corrected. Failure to
• Due noise, you will want to consider the surrounding
correct this will result in possible injury and damage to the
area when operating the car.
• Do not operate the car at night. You will not be able to car or property.
drive it without hitting something.
• Glow fuel - Do leave the glow fuel unattended with the lid
• Do not operate the car indoors. Engine exhaust is not
off. Fuel contains Methanol and Nitro Methane and is
healthy.
flammable and poisonous.
Glow Fuel
• Glow fuel is poisonous! Store fuel in cool ventilated location. Refer the glow fuel
• Glow fuel is flammable! label for additional precautions.
• Do not leave in fuel bottle with lid off at any time.
• Do not use any fuel other than glow fuel in this engine. • Car Fuel tank - Never store fuel in car tank, it will ruin the
engine if left in tank.
First Time Starting the Engine
Caution! When starting engine make sure the following is • Always turn off the car BEFORE turning off radio.
observed.
• Set engine Master needle to 3 turns (rich setting) • DAMAGE DUE CAR RUN AWAY IS NOT A WARRANTY
• Do not do this alone, get an experienced friend to help at ISSUE.
first.
• Fill fuel tank, try not to spill fuel. Do not spill fuel on IF YOU DO NOT BREAK-IN ENGINE
receiver
• Hold car off the ground, so it will not runaway when first CORRECTLY, MAINLY AT LOW RPM,
starts YOU WILL BREAK THE CONNECTING
• Turn on Radio and check the linkage before starting
engine. ROD!
• Turn on car receiver battery switch.
• Always have an air filter on the carburetor to keep dirt
out. FAILURE TO NOT READ AND
Engine Break-in FOLLOW BREAK-IN ENGINE
• See Engine Page.
You need to get batteries for the radio transmitter and the car receiver packs.
AA Batteries ( 12 pcs )
• Radio TX needs (8) eight AA batteries.
• Shaft Starter requires a 7.2Volt battery pack and charger OFNA #10195
• Car needs (4) four AA Ni-cad batteries 2000Mah or higher or (4) 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..
Diff. Oil
Instant Cemment
Cutter
Shock Oil
Phillips Type Screw Drivers ( L )
1000 3000 5000
Curved Scissors
Masking Tape
40006 40010
Pin
2.5X13.8mm
Step1 Cap Joint Step2
36053
8X16mm 49032
Ball Bearing 40009
P6-Oring 43T Large
40003 Bevel Gear
Diff. Case 40004
Diff. Gear
(Large)
40009 36053
P6-Oring 8X16mm
40004
Diff. Gear Ball Bearing
(Large)
40006
Cap Joint
40010
Pin
2.5X13.8mm
94034
4x4mm
Set Screw
40010 .......X2
2.5X13.8mm
Pin
Step3 Step4
30773
30779 4mm
94034 4X10mm Cross Pin
4X4mm ........X1 Washer
Set Screw
40004
Diff. Gear
(Small)
40009 ........X2
P6 O-Ring
40011
Diff. Gasket
30779 ........X4
4X10mm
Washer
*Apply diff. gear grease
to the differential, during
assembly .
*Fill the diff. case to
approx. 80% with grease.
94020
3X12mm ........X4
Flat Head 94020
Hex Screw 3X12mm
Flat Head
Hex Screw
Diff.
40003 Case
40004
Diff. Gear Ball
8X16mm
36053Bearing
(Large)
P6-Oring
40009
40005
Break
Cap Joint
Diff.
40004 Gear
(Large)
40010
40010 .......X2 2.5X13.8mm
2.5X13.8mm Pin
Pin 94034
4x4mm
Set Screw
Washer
4X10mm
30779
Step4
94034 Step3
4X4mm .......X1 30773
Set Screw 4mm
Cross Pin
40004
40009 .......X2 Diff. Gear
P6 O-Ring (Small)
1
3 ASSEMBLY OF THE FRONT GEAR CASE
36053
40024 8X16mm
13X16X0.2mm Ball Bearing
Shim Adjust the backlash
with the shims.
36053 40017
8X16mm Gear Case
Ball Bearing
49012
13T Small
Bevel Gear
40024
13X16X0.2mm
Shim
40017
Gear Case
94036
5X4mm ......X1
Set Screw 94036
94011 5X4mm
4x16 Set Screw
Hex Screw Scr
ew
Cem
e nt
94011
4X16mm ......X2
Hex Screw
36730
Cap Joint
40024 ......X2
13X16X0.2mm
Shin
40015
Front Upper Arm
Holder
(Rear/Plastic)
94027
4X16mm
40015 Flat Head
Front Lower Arm Hex Screw
Holder(Rear/Plastic)
94027
4X16mm ......X4
Flat Head
Hex Screw
40022
Front Lower
Arm Holder
94014 94014
4X45mm .... ..X2 4X45mm
Hex Screw Hex Screw
2
5 ASSEMBLY OF THE FRONT SHOCK STAY
94010
4X12mm
Hex Screw
94004
3X12mm
40117 Hex Screw 90018
Body Post 3X25mm
40116
Screw
Alum Front
Shock Stay
40117
94004 Body Post
3X12mm .......X4 Mount
Hex Screw 35314
4mm
Nylon Nut
94010
4X12mm .......X4
Hex Screw
40531
Shock Ball
End Post
94012
4X20mm .......X2
Hex Screw 35313
3mm
Nylon Nut
35313
M3 ........X2
Nylon Nut 94012
4X20mm
Hex Screw
94010
4X12mm
Hex Screw
35314
M4 ........X2
Nylon Nut
40135
Universal Joint
36053 (Front)
8X16X5mm
Ball bearing
40103 36054
Alloy front Alum.
Knuckle Arm Wheel Hub 8mm
(Left)
36055 .......X2
2.5X17mm 94036
Pin 5X4mm
Set Screw
w
re t
36055 S c m en
2.5X17mm Ce
94036 Pin
5X4mm .......X2
Set Screw
36870
4X10mm
36870 Set Screw
40104 4X10mm 40104
10mm Set Screw 10mm
Ball and Socket Ball and Socket
36870
4x10mm
Set Screw
40102
Front Lower Arm
(Right)
40102
Front Lower Arm
(Left) *A 4x10mm set screw is used
to adjust ride-height.
36870
4X10mm .......X2
Set Screw
3
8 ASSEMBLY OF THE FRONT UPPER ARMS
40101
Front Upper
Arm(Left) 36860
5X35mm
40101 Turnbuckle
36860 Front Upper
5X35mm Arm Ball End
Turnbuckle
40101
Front Upper
Arm Ball End
40104
Approx. 11mm 10mm
Ball and Socket
40101
Front Upper
Arm(Right)
40104
36860 .......x2 10mm
5X35mm Ball and Socket
Turnbuckle
9 ASSEMBLY OF THE FRONT SUSPENSION ARMS Assembly for both right and left side
90021
3mm
E-Ring
90020
2.5mm
E-Ring
40023
Lower Arm
Shaft(4mm)
40104
4X16mm
Cap Screw
w
S c re n t w
Scre e n t
e
C em Cem
40104
4X16mm
90020
Cap Screw
2.5mm
E-Ring
90020
2.5mm .......X4
E-Ring
36170
Arm Shaft(3mm)
40104
4X16mm .......X2
Cap Screw
10 CLIP IN THE CASTER ADJUSTER Assembly for both right and left side
4
11 ASSEMBLY OF THE FRONT STABILIZER Assembly for both right and left side
30341
Stabilizer Ball
40029
Stabilizer
Ball End
94035
3X8mm
Set Screw
40199
Stabilizer
Ball End
94005
30403 3X16mm
6mm Hex Screw
Ball End
94033
M3X3
Set Screw
94033
M3X3
Set Screw
94035 ......X2
3X8mm
Set Screw
94033 ......X2
3X3mm
Set Screw
40017
Stabilizer
Mount Plastic
94003 ......X4
3X10mm
Hex Screw
40019
94005 ......X2
94003 40017 Stabilizer
3X16mm
Hex Screw 3X10mm Stabilizer
Hex Screw Mount Plastic
12
24
ASSEMBLY OF THE SERVO SAVER
*Do not tighten 40037 94009
40037 4X10mm
Hex Screw too tight. 94004
Steering Plat Hex Screw
Hex Screw 3X12mm
Hex Screw
Steering Plat
40037 4X10mm
94009
Hex Screw
Hex Screw
40031
4X8mm 40035 40030
40032 Plastic Flange Servo Saver Front plate
Servo Saver Bushing Alum. Tube
Connecting Plate
40031
Servo Saver
Horn A
* Take the plastic bushing
from servo saver plastic
parts tree.
Servo
40031 Saver
Horn B
Plastic
40031
Bushing
40033
Servo Saver
Spring(Black) 40018
Center Chassis
Bracer (Front)
40034
Servo
40031 Saver Servo Saver
Horn C Spring Tension
Adjuster
94004
3X12mm .........X1
Hex Screw
Plastic
40031
Bushing 40036
Servo Saver
Post
94009
4X10mm .........X2
Hex Screw
5
13 ASSEMBLY OF THE STEERING RODS 94021
3X15mm Screw
Flat head Cement
36700 40039
7mm Steering 3mm
Ball End Tapper
Washer
94021 w
3X15mm r e nt
Sc m e
Flat head Ce
Hex Screw
40039
3mm
40039
94021 40006 Tapper Washer
3mm
3X15mm ........X2 Turnbuckle Tapper Washer
Flat head Hex Screw
36700 40038
7mm Steering 7mm Ball
Ball End
94022
3X18mm ........X2
Flat head Hex Screw 94022
3X18mm
Flat head
Hex Screw
94009
4X10mm ........X2
Hex Screw
94041
3mm ........X2
Approx 34.8mm
Nylon Nut
94004
3X12mm
Hex Screw
40137
Front Bumper(D)
40676
Bumper
94003 Washer
3X10mm
Hex Screw
94003
3X10mm ........X6
Hex Screw
94004
Hex Screw
3X12mm
94004
3X12mm ........X3
Hex Screw
40024
13X16X0.2mm 36053
Shim 8X16mm
Ball Bearing
40017
Gear Case
36053
8X16mm
Ball Bearing
49012
94011 94011 Small
4X15mm .......X2 4X15mm Bevel Gear
Hex Screw Hex Screw
13X16X0.2mm
40024
Shim
Gear Case
40017
40024 ........X2
13X16X0.2mm
Shim
6
16 ASSEMBLY OF THE REAR ARMS HOLDER
94009
94036 4X10mm
5X4mm Hex Screw
Set Screw
w
S c re en t
Cem
36730 40027
Cap Joint Win Stay
94036 Mount
5X4mm .......X1
Set Screw
40025
94003 Rear Lower
3X10mm .......X1 Arm Holder
Hex Screw
94009
4X10mm .......X2
Hex Screw
40015
Rear Arm
Holder
94011
4X15mm
94011 Hex Screw
4X15mm .......X2 94030
Hex Screw 4X45mm
Flat Head
Hex Screw
94030 .......X2
4X45mm 94003
Flat Head 3X10mm
Hex Screw Hex Screw
40027
Rear Body
Post
40531
40137 Shock Ball End
Body Post Post
S 90018
Plastic Ce cre 3X25mm
m w
en Cap Screw
t
94003
3X10mm
Hex Screw
94003
3X10
Flat Head
Hex Screw
40026
Rear Shock Stay
40531
Shock Ball End
Post
94003
3X10mm .......X1
Hex Screw
94004
3X12mm .......X2
Hex Screw
94004
3X12mm
Hex Screw
90018
3X25mm .......X2
Cap Screw
94019
3X10 .......X2
Flat Head
Hex Screw
7
18 ASSEMBLY OF THE WING STAY
40027
Wing Stay
Post 40027
Step1 Step2 Wing Stay(Right)
40027
Wing Mount
40027
Wing Stay(Left)
40027
Wing Mount
94007
3X20mm
Hex Screw
94007
3X20mm
Hex Screw
94005
3X16mm
Hex Screw
94005 94042
3X16mm 4mm
Hex Screw Nylon Nut
Step3
94042
4mm
Nylon Nut
Step4
94005
3X16mm .......X2
Hex Screw
94011
4X16mm
Hex Screw
94011
4X16mm
94007 .......X5 Hex Screw
3X20mm 94007
Hex Screw 3X20mm
Hex Screw
94011
4X16mm .......X6
Hex Screw 40018
Center Chassis
Bracer(Rear)
94011
4X16mm
Hex Screw
94042
4mm .......X2
Nylon Nut
40102 90020
Rear Lower Arm 2.5mm
E-Ring
94036
5X4mm .....X1 36053
Set Screw 8X16X5mm
ball baring 36054
CNC Alum.
Wheel Hub 8mm
36870
36053
4X10mm .....X1
8X16X5mm
Set Screw
ball baring
90020
2.5mm
36081 E-Ring
90020 Wheel
2.5mm ......X2 36082 Rear Hub 36870
E-Ring Rear Wheel 4x10mm
Axis Shaft Set Screw
36081
3mm
Plastic Washer
36055 ......X1
2.5X16.8mm 36170 36081
Pin 3mm Arm Shaft 3mm
*A 4x10mm set screw is used Plastic Washer
to adjust ride-height.
8
20 ASSEMBLY OF THE REAR SUSPENSION ARMS Assembly for both right and left side
90021
3mm
E-Ring
90021
3mm
E-Ring
90021 40023
3mm .......X4 4mm
E-Ring Lower Arm Shaft
21 ASSEMBLY OF THE REAR SUSPENSION ARMS Assembly for both right and left side
Step2
Step1
40065 94041
Upper Arm 3mm
Plastic Rod End Nylon Nut
40065
Upper Arm
Plastic Rod End
36850
94041
7mm Ball
3mm .......X4
Nylon Nut
36861
Turnbuckle
94006 94041
3X18mm 3mm
94006 Cap Screw Nylon Nut
3X18mm .......X2
Cap Screw 36850
7mm Ball
40107
Rear Driver
Shaft(104mm)
94008
3X25mm .......X2 Approx. 32.2mm 94008
Cap Screw 3X25mm
Cap Screw
40029
Stabilizer
Ball End
94035
3x8mm
Set Screw
40029 94033
Stabilizer 3X3mm
Set Screw
30403
6mm
Ball End
94033
3X3mm
Set Screw
94033
3X3mm ........X2 94005
Set Screw 3X16mm
Hex Screw
94035
3X8mm ........X2
Set Screw
40017
Stabilizer
Mount Plastic
94003
3X10mm ........X4
Hex Screw
40199
94005 94003 Stabilizer
3X16mm ........X2 3X10mm
Hex Screw Hex Screw
9
23 ASSEMBLY OF THE BRAKE AND CENTER DIFF. MOUNT
Center
40040 Diff.
Step 1 Step 2 Step 3 Mount
40591
Fiber Glass
Brake Disk
Brake
36660 Pad
Center
40040 Diff.
Mount
40591
Fiber Glass
Brake Disk
40040
Center Diff. 94004 Approx. 3.5mm
Mount 3X12mm
Hex Screw
40662
Center Diff.
Mount Post
40676
Center Diff. Mount
Post Washer
Step 4 Step 5 Step 6
40041
Center Diff.
94003 Plate
94033
3X10mm
3X3mm
Hex Screw
Set Screw
30211
Plastic
Bushing
30211 30171
Plastic Brake Lever
Bushing
40665
Brake Cam Brake
40665 Cam
94004
3X12mm
Hex Screw
Step 7 Step 8
40021
Fuel
Proov Plate
94033
3X3mm 30171
Set Screw Brake Lever
94033
3X3mm .......X2
Set Screw
94003
3X10mm .......X2
Hex Screw
94004
3X12mm .......X6
Hex Screw
10
24 ASSEMBLY OF THE RADIO TRAY
94008
3X25mm
94003 Hex Screw
3X10mm
Step 1 Hex Screw
94003
94003 3X10mm
3X10mm 40049 Hex Screw
Hex Screw Step 2 Step 3
Alum
Radio Tray
94004
3X12mm
Hex Screw 3X8mm
Washer
40117 3X8mm
Sensor Washer
Holder
3X8mm
Washer
Support
40541
Sensors
3X8mm
Washer
40047
Radio Tray Post
(Plastic) 40676
Servo Washer
40047
Radio Tray Post 40676
Servo Washer
(Plastic)
94003
3X10mm ........X6
Hex Screw
94004
3X12mm ........X4
Hex Screw
40031
94007 Servo Post
3X20mm .......X2
Hex Screw
40031
94008 .......X2 Servo Post
3X25mm
Hex Screw
40541 1
Receiver Box 40541
Receiver Box
Cover
37410
Clips
Switch 40642
Antenna Pipe
Fixing Nut
10280
Switch Cover
40541
Battery
40541 Receiver Box
Receiver Box Cover
40541 Antenna
Use the screw provide Switch Holder
with your switch
Receiver
2X8mm ....X4
Screw
11
26 ASSEMBLY OF THE RADIO TRAY INTO RECEIVER BOX
94004
3X12mm
Hex Screw 94004
3X12mm
Hex Screw
94004
3X12mm .......X2
Hex Screw
94026
4X12mm
94027
Flat Head
4X16mm
Hex Screw
Flat Head
Hex Screw
94026
4X12mm
Flat Head
Hex Screw
40133
Chassis
94026
4X12mm .......X2
Flat Head
Hex Screw
94026
4X12mm .......X2
Flat Head
Hex Screw
94027
4X16mm .......X6
Flat Head
Hex Screw
94026
4X12mm
Flat Head
Hex Screw
94027
4X16mm
Flat Head
Hex Screw
94026
4X12mm .......X2
Flat Head
Hex Screw
94027
4X16mm .......X6
Flat Head
Hex Screw
12
29 ASSEMBLY OF THE CENTER DIFF. ONTO CHASSIS 40136
Center Drive
Shaft(104mm)
40136
Center Drive
Shaft(120mm)
30779
P5 O-Ring
30779
P5 O-Ring
94026
4X10mm
Flat Head
94026 Hex Screw
4X10mm .......X4
Flat Head
Hex Screw
94019
94019 3X10mm
3X10mm .......X 8 Flat Head
Flat Head Hex Screw
Hex Screw
Pressure
94004 Nipple
3X12mm
Hex Screw 94004
3X12mm
Hex Screw
40109
Fuel Tank
Pressure Nipple
94019
3X10mm .......X 2
Flat Head
Hex Screw
40047
Fuel Tank 94019
Post 3X10mm
94004 Flat Head
3X12mm .......X2 Hex Screw
Hex Screw
13
32 ASSEMBLY OF THE CLUTCH AND ENGINE MOUNT
Step 1 Step 2
10091
Pilot Shaft
10101
Clutch Spring
Threaded 10330
CrankShaft Tapper Corn 10009
40573 Clutch Shoes
3 Pin Flywh eel
(35mm )
10330
7mm
Tapper Corn
30481
10040 3X16m m
3Pin Cap Screw
Flywh eel
10098
SG Clutch Nut
Step 3 Step 4
10099
3X10m m ........ X1
Cap Screw
30481
3X16m m ....... X4
Cap Screw
10099
5X9X0 .3mm
10399 Washer
13T
Clutch Bell
34110
5X10X 4mm
Ball Bearin g
10099
3X8mm
10099 Washer
3X10m m
Cap Screw 34110
5x10x 4mm 40674
Ball Bearin g Engine Moun t
31991
Manifo ld
Step 1 Step 2
10069
1/8
Silico ne Seal
10120
Manifold
Spring
31992
Muffle r
(9.5mm Exhau st)
10184
Silicon e Tube
Nylon Straps
(Midd le)
14
34 ASSEMBLY OF THE ENGINE ONTO CHASSIS
94034
4X4mm
Set Screw
94036
5X4mm
Set Screw
40050
Muffler Stay
94034
4X4mm .......X1
Set Screw
94036
5X4mm ..... ..X1
Set Screw
40051
Muffle r
Stay 10114
94026 Engine Mount
94026 4X10m m Screw
4X10m m ........ X1 Flat Head Screw
Flat Head Screw
10179 Conne ct to
Fuel Tube carbur eter.
Conne ct to
pressu re nippl e.
Conne ct to
fuel nippl e.
30403
6mm
Ball
Plastic
30401 Ball
End
10768 *Use the screw
Servo Horn provi ded with
your servo.
Turnbu
3X40
38281 ckle
30401
Plastic Ball
End
Servo
10769 Horn
Adapt er
30403
6mm
Ball
94004
94004 3X12mm
3X12m m ....... X2 Hex Screw
Hex Screw
15
37 ASSEMBLY OF THE THROTTLE LINKAGE Cut off the servo saver as shown.
Step 2
M2.5
Step1 Nylon Nut
40663
1.8X68mm 2X8mm
Rod Screw
30802
Throttle 30802
Silder Adjustment Mount
30802
94033 Servo
94033
3X3mm Mount
3X3mm
Set Screw
Set Screw 40617
Adjust the height with
.3x6.4x1mm washer.
30530
Throttle
Ball End
30802
10300 10300 Adjustment Mount
Alum Stopper Alum Stopper
10765
30531 Servo Horn
Throttle
Spring 2.6x18mm
Screw
2mm Nut
Step 3
94033
Notice the direction of the adjuster nut.
3X3mm .......X4
Set Screw
2mm .......X2
Nut
Step 4
94003
3X10 ........X1 40663
Hex Screw 2X65mm
Brake Rod
2X8mm ........X2
Screw 36140
2mm
Adjust Nut
40663
2X65mm
94003
Brake Rod
2.5X18mm ........X1 3X10
Screw Hex Screw
Fuel Tube
10300
Alum
Stopper
Fuel Tube
10769
94033 Servo Horn
3X3mm .......X2 Adapter
Set Screw
16
39 ADJUSTING THE ENGINE CONTROL LINKAGES
Carbur etor is
Appro x. 1mm gap Openi ng fully
Turn on the Transmitter then Receiver and set the Adjust the Servo -Horn moun ting positi on for the Adjust #158 so the brakes work smoo thly.
Engine Control Servo Trim to the neutral position. Carbur etor to be full open. If the brakes apply too much or not enoug h,
Adjust the idling adjus ting screw on the Carbu retor Chang e the pivot moun ting posit ion on the servo adjust A80A accord ingly. Or if availa ble on the
to be open appro x. 1mm gap. horn in case the Carbu retor is not openi ng fully or Transm itter, adjus t the High- End Brake
Adjust both of the #158 Engin e Contr ol and Brake linkag e if it is openi ng excess ively. Or if availa ble on the adjust ment.
accord ingly. Transm itter, adjus t the Throt tle high end point . Adjus t A-80A to Chan ge the front or Rear Brake .
Adjust the Engin e while it is not runnin g.
.
40127
Air Filter
Cap
94002
3X8mm
Hex Screw
Nylon Strap
(Small )
Nylon Strap
(Small )
40128
Air Filter
Foam
40127
Air Filter
Mount
40129
Air Filter
94002 Conne ctor
3X8mm .......X1
Hex Screw
41 ASSEMBLY OF THE FRONT SHOCK *Fit the o-ring into groov e befor e
assem bly.
40059
Builds two shocks for front.
P13.8
O-Ring
40057 Step 2 Step 3
Spring
Step 1 Adjus ter
1. Pull down piston and pour oil into 3. Pull down piston, attach pressure
shock cylinder. top and shock oil overflow with
2. To remove air bubbles by slowly tissue paper.
moving piston up and down.
40060 ..........X2
M2.5
Nylon Nut
40090 ..........X2 * Do not overti ghten
7mm R-Rin g 2.5mm nut.
40113 40093
P10 40 06 0 Shock Cap
40060 ..........X4 Oil Seal 2. 5m m
2.6x5m m N y lon Nut
Washer
32033
40 0 60 fill the shocks Pressu re Top
40076 2. 6 x5m m
Shock body with oil.
Was h er
40113 ..........X2 (Front)
P10 40098
40090 ..........X4 Oil Seal Shock Piston
3.5mm O-Rin g (Black )
4 00 90 40060
400 9 0 3 .5 mm 2. 6 x5mm
1mm O - Rin g Was h er
W as h er
Down
40059
P13.8
O-Ring ..........X2
30411 ..........X2 4 005 6
30411 S h o ck P l as t ic Be careful not to
6mm Ball End 6mm Ba l l Rod E n d damage shock shaft.
17
42 ASSEMBLY OF THE REAR SHOCKS
*Fit the o-ring into groov e befor e
Builds two shocks for rear. assem bly.
Step 1 Step 2 Step 3
40059
P13.8 1. Pull down piston and pour oil into 3. Pull down piston, attach pressure
40057 shock cylinder. top and shock oil overflow with
O-Ring
Spring 2. To remove air bubbles by slowly tissue paper.
Adjuster moving piston up and down.
40060 ..........X2 40113
M2.5 P10
Nylon Nut Oil Seal
40090 ..........X2
7mm R-Ring Shock
40093 Cap
* Do not overti ghten
2.5m m nut.
2.6x5m
40060 m ..........X4
Washer
Shock
40077 body 40060 32033
(Long) 2.5mm fill the shocks Pressu re Top
Nylon Nut with oil.
Washer
2mm
40090 40090
40090 ..........X2 7mm
1mm R-Ring
Washer 40098 ..........X2
Shock Pi ston
40055
(Bl ack )
Shock Shaft
UP
(Rear/Long )
30411 Down
6mm
30411 ..........X2 40059 ..........X2 Ball
6mm P13.8
Becareful not to
Ball End O-Ring
damage shock shaft.
43 ASSEMBLY OF THE FRONT SHOCK SPRINGS 44 ASSEMBLY OF THE REAR SHOCK SPRINGS
40072
40058 40072 Color Shoc k
Shock Shaft Color Shock Spring
Dust Cover Spring (White )
(White)
40056
mm
t4 Spring
Cu Holde r
40056
Spring Holde r
3X8mm
Washer
94041
3mm
Nylon Nut
94041
3mm .......x2
Nylon Nut
94007
3X20m m
Hex Screw
94007
3X20m m ....... .x2
Hex Screw
18
46 ASSEMBLY OF THE REAR SHOCK ABSORBER Assembly both right and left side.
94041
3X8mm
Washer
94041
3mm
3mm .......x2
Nylon Nut
Nylon Nut
94007 94007
3X20m m ....... .x2 3X20m m
Hex Screw Hex Screw
10239
80007 Ca Glue
IN
Tires S
T
G A
L N
U
E T
Inner Sponge
86101
Whee l
15072
Wheel Nut
19
49 ASSEMBLY OF THE WING 94004
3X12mm
Hex Screw
0
25 20 15 10 5 5 10 15 20 25 40027
Countersunk
Plastic Washer
94041
3mm
Nylon Nut 40083
Wing
94041
3mm ........X2
Nylon Nut
94041
3mm
Nylon Nut
94004
3X12mm ........X2
Hex Screw
50 MOUNTING BODY
31159
31159
31159 Body Clips
Body Clips
Body Clips
51 STARTING OF THE ENGINE *To start the car, attach a glow plug igniter
to the glow plug, and use either an electric
starter or starter box applied to the flywheel 1.2V
1. Turn on transmitter and then receiver. exposed through the chassis.
2. Fill fuel tank with fuel bottle. * Follow the engine manufacturer instruction
3. Connect 1.2V glow plug starter. manuals regarding engine set-up, carburetor
4. Start engine with 12V starter. and maintenance.
( Note the direction of the starter.)
5. After the engine be started, remove the
1.2V glow plug starter.
V
1. 2
Starter Box
Notice the rote direction (Not Included)
of the starter.
Connect with
12V battery.
20
SETTING GUIDE
FRONT CAMBER ANGLE SETTING REAR CAMBER ANGLE SETTING
Turnbuckle
+ -
- + + - Turnbuckle - +
Positi ve Negat ive Positi ve Negative
Place the model car on flat surface. Raise the chassis to it's maximum clearance
before the wheels leave the ground.
Adjust the length of the front and rear upper arms so that the wheels are right angle to the
ground.
The camber angle adjustment can be moving the turnbuckle rod on the upper arms,
clockwise or anti-clockwise.
(We suggest use zero degree for the front and 2 negative degree for the rear.)
12
Soft Firm
Steering Rod
Soft Firm
1 23
456
Adjust the length of front steering rod to change the toe angle.
Making the tie rod longer will make the front tires 123
become toe-in. Response will be slower and will over steer. Soft Firm
Making the tie rod shorter will make the front tires
become toe-out. Response will be quicker and will under steer.
A
Front Top Arm
1 2 3
OPEN
TRACTION:
HIGH
SURFACE:
SMOOTH
FRONT SUSPENSION 1
2 A
3 B
TOE ANGLE IN:
4
OUT: 5
6
RIDHIEIGHT mm
1
2
CAMBER POS:
3
NEG:
OTHER
FRONT SHOCHS
OIL: W
WHEEL 1 2 REBOUND STOP: mm
PISTON: STANDARD
DRLLRD mm x 1
mm x 2 NOTES:
SPRING: SOFT
MEDUIM OTHER
HARD
1
REAR SUSPENSION WIN POSITION
2
3
REAR TOR-IN PLATE:
1 1 Degree 4
5
2 Degree
6 1 2 3
2
A
1
B
3 3 Degree 3
4 4 5 6
5
RIDHIEIGHT mm
CAMBER 7
POS:
2
NEG:
OTHER
REAR SHOCHS
OIL: W
WHEEL 1 2 3
REBOUND STOP: mm
PISTON: STANDARD
DRLLRD mm x 1
mm x 2
NOTES:
SPRING: SOFT
MEDUIM OTHER
HARD
OPEN
TRACTION:
HIGH
SURFACE:
SMOOTH
FRONT SUSPENSION 1
2 A
3 B
TOE ANGLE IN:
4
OUT: 5
6
RIDHIEIGHT mm
1
2
CAMBER POS:
3
NEG:
OTHER
FRONT SHOCHS
OIL: W
WHEEL 1 2 REBOUND STOP: mm
PISTON: STANDARD
DRLLRD mm x 1
mm x 2 NOTES:
SPRING: SOFT
MEDUIM OTHER
HARD
1
REAR SUSPENSION WIN POSITION
2
3
REAR TOR-IN PLATE:
1 1 Degree 4
5
2 Degree
6 1 2 3
2
A
1
B
3 3 Degree 3
4 4 5 6
5
RIDHIEIGHT mm
CAMBER 7
POS:
2
NEG:
OTHER
REAR SHOCHS
OIL: W
WHEEL 1 2 3
REBOUND STOP: mm
PISTON: STANDARD
DRLLRD mm x 1
mm x 2
NOTES:
SPRING: SOFT
MEDUIM OTHER
HARD
OPEN
TRACTION:
HIGH
SURFACE:
SMOOTH
FRONT SUSPENSION 1
2 A
3 B
TOE ANGLE IN:
4
OUT: 5
6
RIDHIEIGHT mm
1
2
CAMBER POS:
3
NEG:
OTHER
FRONT SHOCHS
OIL: W
WHEEL 1 2 REBOUND STOP: mm
PISTON: STANDARD
DRLLRD mm x 1
mm x 2 NOTES:
SPRING: SOFT
MEDUIM OTHER
HARD
1
REAR SUSPENSION WIN POSITION
2
3
REAR TOR-IN PLATE:
1 1 Degree 4
5
2 Degree
6 1 2 3
2
A
1
B
3 3 Degree 3
4 4 5 6
5
RIDHIEIGHT mm
CAMBER 7
POS:
2
NEG:
OTHER
REAR SHOCHS
OIL: W
WHEEL 1 2 3
REBOUND STOP: mm
PISTON: STANDARD
DRLLRD mm x 1
mm x 2
NOTES:
SPRING: SOFT
MEDUIM OTHER
HARD
Thank you for purchasing a OFNA engine. We appreciate your choice and know you will enjoy running it. Please
note that the Force information in engine box is subject to change with not notice.
Carburetor Low end and barrel stop screws are pre-set by factory.... Do not change until break-in is done.
Your OFNA engine is extremely tight when the piston is at the top of the stroke and turning the crankshaft by hand.
This is normal for a new ABC type engine. The piston and sleeve are matched for fit and the top of the sleeve is
tapered for a tight fit. As you run your engine, this tightness should diminish. There is no cause for alarm, because
as the engine warms up, the brass sleeve will expand faster than the aluminum piston and the engine will turn freer.
As with any new engine, there are many high spots and tight fits in the matching process. High spots create hot
spots that must be broke-in. Therefore, the break-in process is very important to provide good service by the OFNA
engine. So, you must run the engine rich (COOL) for the first three tanks of fuel. We recommend using one gallon
of 20% BLUE THUNDER 0R BYRON’S 2000 as break-in fuel. Other break-in type fuels or added oil is NOT
needed. DO NOT OVER REV THE ENGINE WHEN FIRST STARTING, this could break the piston and over heat
sleeve. Let engine run at low RPM for one tank to break-in connecting rod bearing before starting full break-in.
Break-in the engine in the car, by running the engine at a rich setting. Run the car from a slow to fast speed with
short bursts of speed. You need to buildup a little heat in the engine, but not too hot. In a rich setting, the engine
will run cold. In the leaner setting the engine run hot, this is not good yet. Do not heat up the engine too much at
this time. After about one (1) tank, turn the Master Needle Valve, clock wise, 1/8 of a turn leaner or clockwise.
Keeping the fuel tank full, continue the process until you slowly turn the Master Needle Valve, 1/8 of turn each time,
too a leaner point and in which the engine runs at high RPM and power, but still keep max temp. of 250 deg. F. At
this point you must stop, too lean of a setting will heat up engine and damage the piston. A normal operating
temperature is around 220 to 250 Deg. Temperatures of 300 Deg. and above will damage engine and shorten life.
NEEDLE SETTINGS
Master Needle Valve - main control for fuel mixture. Set at 3 to 31/2 turns from closed. Adjust this needle for
maximum RPM and power without being too lean or too hot. Make sure you start at bottom of needle seat!!
Side Carburetor Needle (Low Speed) - This needle is in the center side of the carburetor and provide throttle
response. It is not the idle adjustment. Set FLUSH with ball end. Turning in is Lean and Out is Rich. Do not adjust
this needle until the Master Needle is set for power and top speed. This will only effect throttle response.
Barrel Stop Screws - Used for adjusting Idle. Set for 1/16th inch gap to start new engines. You can open more for
faster idle.
52259 52292
52960
52250 52098
52274 52298
52091
52275
52276 52930
52277 52295
52294
10330
52282 52980
52900 52291
52297
52099
52090
52930
Adjust low end needle for best throttle response. Use only
small turns. From idle, give it full throttle, if throttle is slow
lean out needle until good.
Adjust barrel stop so it will not close, accept for a small gap.
This gap will be the idle setting. You will notice the idle will
increase with a wide gap.
Lean Rich
OPTIONAL OFNA MICRO FAIL SAFE UNIT - #91002 (MICRO)
The OFNA Fail Safe unit is used to protect your RC car from loss of control due to:
The Fuzzy logic CPU operates on 3.8 to 6.0 volts DC from your receiver battery pack.
Warning - If receiver battery is dead or removed or car battery switch is off, the fail safe
unit will not function nor provide any RC control protection.
Installation:
1) Connect the unit between your receiver and throttle servo. But, before applying power
check wiring color code to ensure correct polarity.
2) Locate unit in battery box or holder. It is best to keep dirt or water away from unit.
Also, secure unit so it is not loose and allowed to wiggle freely on leads.
3) To setup the unit, turn on the radio transmitter and car receiver. You should see the
throttle and steering servo’s operate normally. Also, the fail safe “red” light will be flash-
ing quickly. If solid red, you may have radio problem or not turned ON.
4) With radio transmitter on, push throttle trigger to full brake and hold, not full throttle.
Then, with a pin, push the Set Position button on the fail safe unit. You should feel a one
click and a flashing red light indication. For a few seconds, the red led will flash quickly
then pause, this pause indicates the fail safe is set to your brake trigger position.
The unit is now set. To check, turn off radio transmitter. Note the throttle servo will im-
mediately move to the brake position set, in this case FULL. Also, a red light will be on.
Solid Red means dangerous operation; Slow flashing red means possible problem or low
receiver battery. With either indication (Slow or Solid red), stop operation until interfer-
ence or battery recharge is done.
Fuel line not primed Fill fuel tank and pressurize tank by capping exhaust
ENGINE WILL NOT START Glow plug will not heat(lite) Check glow plug battery heater or replace plug.
Engine flooded, too much fuel Check carb. needle setting. Do not over prime.
Remove glow plug and poor out fuel.
Needle valves not setup Check needle setting for break-in.
Servo linkage not correct Check linkage for correct radio neutral.
Carb. barrel closed Check for slight barrel gap, 1/6th
Fuel tank empty Check fuel level and prime fuel line/carb.
Glow plug bad Even if plug heats, change to a known good plug.
ENGINE STARTS AND Master needle closed Check master needle setting
STOPS Engine is too hot Check needle settings
Low end is too lean Check low end needle, factory set.
Needle are not correct Check needle settings
SLOW THROTTLE Fuel pressure in tank Check pressure line to tank and lid seal.
RESPONSE Linkage not opening Check that throttle is fully open at full throttle on radio.
Batteries in car are low Turn off engine and replace car batteries.
Batteries in car are low Turn off engine and replace car batteries.
Radio batteries are low Turn of engine and replace radio batteries.
CAR IS HARD TO CONTROL Reception from radio bad Check antenna and batteries. Also, loose screws on
OR NO CONTROL AT A chassis can interfere with radio.
DISTANCE Car radio is wet Turn off engine and dry radio rec’r with air. do not run
again until fully dry.
Low battery in car Replace batteries before running car.
Low servo power Standard servo used in this kit are only 50ioz, up
graded servo with 70 or more will work better.
STEERING SLOW Battery pack is dead, quickly A rechargable pack is recommended (5 cell 600AE)
OWNER’S REGISTRATION CARD
OFNA Racing congratulates you on your purchase of our fine OFNA Product. With proper maintenance and han-
dling this kit will provide many hours of enjoyment.
The registration card should be filled out and mailed to OFNA Racing within 10 days of purchase date.
In the event that the kit is incomplete or component parts are broken due to error in manufacturer, contact your
dealer from which you purchased the kit for replacement part or call OFNA at (949) 586-2910 for your nearest dealer
location. Other items such as radio and engine other covered by individual warranties.
IMPORTANT!
Please print or type, filling in the information listed below and mail immediately
MAIL TO:
OFNA RACING
7 VANDERBILT
IRVINE, CA. 92618
TEL: (949) 586-2910
REGISTRATION CARD
ADDRESS
ADDRESS
OFNA
7 Vanderbilt
Irvine, Ca. 92618