Throttle Setup/curves
Turn the idle set screw on the carburetor counter-clockwise until the throttle control arm no longer touches the screw at its full low
position
Set the throttle channel at 50% of travel and then center the servo arm at a 90 degree angle to horizontal.
Install the ball on the bottom section of the arm 12mm from the center of the servo
Set the ATV’s of the throttle channel to 130% on both high and low ends. If your radio won’t support this percentage then set them at
100% and install the ball further out on the servo arm. You’ll have to determine the correct position to mount it based on the ability to
fully move the throttle through its travel
Now set the length on the throttle control rod such that the base of each link is 64.5mm apart from each other. This length is correct for
Futaba servos. Other servos may require a slightly different length to account for differences in servo size/output position
Assuming the model will hover at a collective stick position of 75%, the following values will be approximately correct to achieve a
1750RPM hover speed
Throttle hold position
– 35%
Governor setup
If you intend to use a governor, you will need to follow the manufacturers instructions as to exactly how to set up the device
For governors that have a setting for “low” throttle positions (the lowest position that the governor can set the throttle at), this value
may need to be significantly less than for a glow model since thee throttle position will be lower. If your governor consistently causes
a head speed that is much higher than you have set, check to see if the governor supports this setting and if so lower it until the head
speed is closer to your desired setting
Governor Sensors
If you intend to use a governor, it will require a sensor of some sort to detect the engine RPM. You can devise your own method for
installing the sensor that is provided with your governor or you can instead use a product known as the Stator Gator. This device
replaces the push button “kill switch” and can be directly connected to your governor. For specific governor supported reference the
companies website.
Starting
Fill the fuel tank with the gas/oil mixture
Press the primer bulb on the carburetor several times until it fills with fuel
Power up the helicopter electronics and allow them to stabilize
Ensure that the throttle is at its low position (the arm on the carburetor) is pointing towards the front of the helicopter
If you are pull starting the helicopter, grab the rotor head of the helicopter and place your left foot up against the left skid of the
helicopter to prevent it from moving
ALWAYS FIRMLY HOLD THE ROTOR HEAD
while starting the model. If the throttle should unexpectedly be set at a high RPM setting
due to an incorrect radio setup these motors have a great deal of torque and can accelerate the rotor head quickly causing injury or
damage.
Now pull the starter briskly. If this the first start of the day, first close the choke on the carburetor (usually located on the bottom of the
stock air filter) and pull the starter 3 times. Then open the choke fully and pull the starter until the motor starts, usually less than 5 pulls
If you are using a spin starter, simply insert the starter end in the start coupler on the top of the model, grasp the rotor head firmly and
spin the motor over until the engine starts. You won’t need to engage the choke.
Normal Curve Points
#1
20%
#2
35%
#3
47%
#4
62%
#5
100%
Idle Up Curve Points
#1
-100%
#2
-67%
#3
58%
#4
68%
#5
100%
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