RTR Instruction
Manual
OFNA RACING
22692 Granite Way, Ste. B
Laguna Hills, CA. 92653
PRE-ASSEMBLED
ASSEMBLED CHASSIS WITH RADIO AND ENGINE
THINGS NEEDED
REQUIRED FOR OPERATION
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 fuels, they will over
heat engine.
• Buy short glow plugs, like O.S. 8. Or OFNA/PICCO P-7S plug. Use
plugs without idle bar. If a long glow plug is used, like the P-7S and
MC-59, place two copper washers under the plug.
Glow Fuel
20%
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 batteries.
AA Batteries ( 12 pcs )
Recommendation:
You may want to upgrade the car battery pack to a Ni-Cad 5 cell
type(600AE). This will give more run time.
TOOLS NOT INCLUDED IN KIT
In your box you will find..
• #10163 - Fuel Bottle top
• #10218 - Red “c” size glow heater
Instant Cemment
Cutter
Phillips Type Screw Drivers ( L )
Phillips Type Screw Drivers ( S )
Needle Nose Pliers
Knife
Curved Scissors
Masking Tape
Brush
Cross Wrench
#17109 $3.95
Paints
Glow Plug Cross Wrench
#10800 $5.95
READ THIS BEFORE RUNNING
Running a nitro kit is fun and easy, but to make this a safe rusting.
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.
• 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 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. engine if left in tank.
• Don use any fuel other than glow fuel in this engine.
The car is very fast
• Clear oil and dirt from chassis with a degreaser.
Precautions
• 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 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 the glow fuel
label for additional precautions.
• Car Fuel tank - Never store fuel in car tank, it will ruin the
First Time Starting the Engine
Caution! When starting 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 at
first.
• 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
starts
• Turn on Radio and check the leakage before starting
engine.
• Turn on car receiver battery switch.
• Always have an air filter on the carburetor to keep dirt
out.
Engine Break-in
• See Engine Page.
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
INSTALLATION OF THE RECEIVER
BATTERY
AA-3
Batteries 4 pcs
Antenna
Wire
Antenna Pipe
* Check negative and positive-side
before assembly.
CHECKING ENGINE THROTTLE
A
1. Insert AA batteries into
transmitter (8 Pcs).
2.Turn on transmitter.
3.Turn on receiver.
4.Center throttle trims as
shown .
IMPORTANT!
CHECK THROTTLE AND
STEERING SWITCHES IN
RADIO FOR CORRECT
MOVEMENT BEFORE
STARTING ENGINE.
* Insert into transmitter.
1. Pull Full Throttle.
B
C
1. Push trigger to full
brake position.
2. Adjust alum. Stopper to
increase or decrease
the brake.
A
( Engine at Idle )
Brake is not on
Receiver battery pack
( Engine at Full Throttle )
B
Brake is off
C
( Braking )
B
A
Decrease
C
Brake is on
Increase
ASSEMBLY OF THE TIRES AND WHEELS
87650
WHEELS, 12 SPOKE, WHITE
PARTS USED
37390
2 x 10.8 Pin x4
87660
Street Tire
37640
Front "C" Hub
Assembly
37740
Rear Hub
Assembly
37590
Drive Nut
( Plastic )
37390
2 x 10.8
Pin
37390
2 x 10.8
Pin
4mm
Nylon Nut
37730
M4 Nylon Nut X4
INSTALLATION OF BODY POSTS
AND SHOCK ABSORBERS
( FRONT )
37700
Body mount posts
3 x 10mm
Tapping Screw
( REAR )
3 x 10mm
Tapping Screw
37590
Drive Nut
( Plastic )
37700
Body mount posts
4mm
Nylon Nut
ENGINE BREAK-IN AND TUNNING
(BREAK-IN THE ENGINE BEFORE DRIVING THE CAR!)
• Choose a wide clear outdoor location with low dirt and dust.
• Set the car on box or holder with wheels off the ground.
• Turn on radio and car. Make sure throttle is at idle position.
• Fill fuel tank and set master engine needle.
• Prime fuel line and Heat glow plug before pull starting engine.
• When started, let engine fast idle for two tanks of fuel.
TUNING AFTER BREAK-IN
Close master needle by turning clockwise until it stops.
Then open needle by turning counterclockwise 3 turns
(rich setting).
When running car, adjust carb with 1/8 clockwise turns,
slowly leaner, until the top speed good. Check engine
temp, if possible, for no more 250 degrees.
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.
Lean
Rich
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.
Idle adjuster screw.
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