GM-Racing 90507.RTR Bedienungsanleitung Seite 17

Montage Vordere Radaufhängung
Front Suspension Assembly
Assemblage suspension avant
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82002(10*15*4mm)
13006
13007
43 GM-Racing 90507.RTR Radicator Nitro 4WD Racing Truggy
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82004(5*11*4mm)
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13006
13007
82002(10*15*4mm)
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82004(5*11*4mm)
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CARBURETOR BASIC SETTINGS
Before starting the engine please check the carburetor linkage. Then remove the airfi lter
from the carburator. Turn on the transmitter and model and check the apparent gap. In
neutral position the gap should be between 0.7 and 1mm (also see fi gure). Now pull the
throttle to full speed and check the carburetor to open completely.
CHECKLIST BEFORE YOU START
• Check all screws on permanent seat.
• Check all the moving parts to work without binding.
• Check the air fi lter. When appropriate, clean the fi lter and oil it with new Air fi lter Oil –
out oil on the fi lter!
• Check the Fuel tubes for leaks.
• Check the batteries in the remote control.
• Check your frequency, so that a trouble-free operation is ensured.
RUN-IN AND ADJUSTING THE ENGINE
The Run-In phase of the engine is crucial for the proper performance. If you don´t keep the Run-In conditions
exactly, you can damage the engine and shorten its life. During the Run-in time always use the same fuel
(with the same nitro content) as you want to use it later. Although the carburetor is adjusted correctly by the
factory, you have to deal with the following settings and with the Run-in procedures. If you change the fuel
brand or run the engine under very different conditions (outdoor temperature hot / cold, high / low location,
etc.), you have to adjust at least the high-speed needle in order to prevent overheating or to achieve the ma-
ximum performance of the engine. Let the engine never run at full throttle without the wheels on the ground.
THE RUN-IN PROCEDURES
During the fi rst three fuel-tank fi llings the high-speed and the idle adjustment screw should be clearly on the
„rich" side (see explanation below). When accelerating there should be slight delays and thick smoke, and
the smoke must cease if the model is gaining speed. At full speed should be a clear smoke from the exhaust
plume. Leave the vehicle on fl at ground on a running track oval. Push the throttle slowly when the vehicle
is on the straight line, and let the car run on idle when you are close to the curves. This will also give you a
sense for the reactions and the handling of the vehicle. If you are an experienced racer, you can also run-in
the engine by place the car against a wall or other fi xed object and run the engine in idle position for at least
two fuel-tank fi llings (increase the idle RPM with the Throttle Trim or the idle adjuster screw on the carburetor,
so that the engine will not die).
WHAT DOES „RICH" AND „LEAN" MIXTURE MEAN?
Adjusting the carburetor is one of the most critical things when driving fuel powered RC cars. It refers to the
mixing ratio as „rich" when too much fuel in proportion of air gets in the carburetor, and as a „lean" with low
fuel in comparison with air. The fuel portion is set with the high-speed and low-speed adjustment screws. The
low-speed screw is located on the front carburetor rotary valve. The high-speed needle stands bolt upright on
the back of carburator. If you rotate the screws in clockwise direction, the mixture is getting lean and vice ver-
sa. A pronounced „rich" mixture shows slowly acceleration and less performance with thick smoke from the
exhaust. In „lean" mixture the engine can „swallow" before then rev up suddenly, or maybe, after a short in-
itial acceleration slowdown in the performance. A lean mixture leads to undesirably high engine temperature
and reduces the lubrication of the engine parts inside, leading to excessive wear and damage. It is always
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advisable to run the engine slightly rich and never lean to avoid overheating and possible damage.
MOTOR TUNING
If the engine is run-in, you can use it to maximum performance. It is important that you ca-
refully watch the engine temperature, overheating cause serious damage and excessive
wear. Make any changes to the carburetor screws in the 1-hour increments (see fi gure).
Caution: Warm up your engine before making adjustments on the carburator set-
screws!
GM-Racing 90507.RTR Radicator Nitro 4WD Racing Truggy
mehr
weniger
Standgas
Standgas
High Low
moins de gaz
plus de gaz
pour le ralenti
pour le ralenti
Never run with
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