Traxxas NITRO SLASH Manual page 24

High Altitude Operation:
If you live in a high
altitude region (5000 or more
feet above sea level), the
lower air density may require
you to lean your high-speed
fuel mixture slightly from the
factory break-in settings. Try
this if you are experiencing
difficult starting or extremely
sluggish engine performance
at high altitude.
As you gain experience in
the hobby, you may discover
that many people have
differing opinions on what
is the proper procedure to
break in a model engine.
Only use the Traxxas break-in
procedure. Other break-in
procedures could result in a
weak, damaged, or otherwise
poor performing engine.
The procedure outlined
here was extensively tested
and proven to yield better
performing engines than
other "common" break-in
methods. Even if you have
years of experience using
model engines, please do not
ignore this caution!
24 • NITRO SLASH
THE TRX 3.3 RACING ENGINE
Tank 1
1. Drive the model with the body off.
2. Driving procedure: Gently pull the throttle trigger to 1/4 throttle
over a 2-second count. Then gently apply the brake to stop.
Count the two seconds out while accelerating: one thousand one,
one thousand two, and then stop. Operate the throttle trigger as
smoothly as you can. Repeat this starting and stopping procedure
until the first tank of fuel is nearly empty.
3. Look for thick blue smoke exiting the exhaust outlet. If there is
no smoke, richen the high-speed needle 1/4 turn, by turning the
needle counterclockwise.
4. When the fuel tank is nearly empty, shut off the engine by pinching
the fuel line connected to the carburetor.
5. Let the engine cool for 15 minutes.
Note: If at any point the engine cuts out or stalls during gentle
acceleration, richen the high-speed needle 1/4 turn by turning the
needle counterclockwise.
Tank 2
1. From tank 2 forward, the model should be driven with the body on.
2. Driving procedure: Gently pull the throttle trigger to 1/2 throttle
over a 2-second count. Then gently apply the brake to stop. Count
the two seconds out while accelerating: one thousand one, one
thousand two, and then stop. Repeat this starting and stopping
procedure until the second tank of fuel is nearly empty.
3. When the fuel tank is nearly empty, shut off the engine and let it
cool for 15 minutes.
Tank 3
1. Driving procedure: Gently pull the throttle trigger to 1/2 throttle
over a 3-second count. Then gently apply the brake to stop.
Count the three seconds out while accelerating: one thousand one,
one thousand two, one thousand three, and then stop. Repeat this
starting and stopping procedure until the third tank of fuel is
nearly empty.
TANK THROTTLE
1 1/4
2 1/2
3 1/2
4 Full
5 Full
2. As the engine loosens, the idle speed may increase and cause
3. When the fuel tank is nearly empty, shut off the engine and refuel.
Tank 4
1. Driving procedure: Gently pull the throttle trigger to full throttle
2. Apply the throttle gradually! Your finger should not reach full
3. Keep your driving smooth and consistent.
4. When the fuel tank is nearly empty, shut off the engine and refuel.
Tank 5
1. Driving procedure: Gently pull the throttle trigger to full throttle
2. When the fuel tank is nearly empty, shut off the engine and refuel.
Tank 6
STOP!
instructions on page 19. During the sixth tank of fuel, the engine can be
tuned for general performance use. Proceed to the next section in this
manual.
TIME COOL
2 seconds 15 minutes
2 seconds 15 minutes
3 seconds -
3 seconds -
5 seconds -
the model to try to creep forward when stopped. Reduce the
idle speed by turning the idle adjustment (see page 15) on the
carburetor counterclockwise.
From here on, you do not need to let the engine cool between tanks.
over a 3-second count. Then gently apply the brake to stop.
Count the three seconds out while accelerating: one thousand one,
one thousand two, one thousand three, and then stop. Repeat this
starting and stopping procedure until the fourth tank of fuel is
nearly empty.
throttle until the end of the three-second count.
over a 3-second count, hold for 2 more seconds, and then
gently apply the brake to stop. Count the five seconds out while
accelerating. Repeat this starting and stopping procedure until
the fifth tank of fuel is nearly empty.
Clean your air filter before you proceed. Refer to the
BODY NOTES
Off Apply throttle gradually.
On Apply throttle gradually.
On Reduce idle speed if necessary.
On Keep your driving consistent.
On Accelerate over 3 second count, hold for 2 seconds.