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SETUP INFORMATION

Center of Gravity

The recommended Center of Gravity range is 2.75 to 3.25 inches from the leading edge of the wing root. For maiden

flight, the plane should ideally have the Center of Gravity at the designer recommended 2.75 inches. After several

flights, you can and should adjust to find your perfect, personal CG location.

Control throws

Low / Precision Rates (in degrees and inches) and Corresponding Exponential

Aileron

15 degrees

Elevator

10 degrees

Rudder

20 degrees

High / 3D Rates (in degrees and inches) and Corresponding Exponential

Aileron

35 degrees

Elevator

45 degrees or more

Rudder

45 degrees

Note: that Hitec and Futaba radios require NEGATIVE exponential, while JR and Spektrum use POSITIVE exponential.

Servo arm length:

Most servo arms have multiple locations in which you can install your pushrod adjustors into, giving different effective

servo arm lengths. The method to determine the correct hole is as follows:

Set your high-rate throws as indicated above using the endpoint adjustment for each channel in your transmitter. If your

endpoint adjustment is near maximum (a value of 140-150 on most transmitters) then you are using the correct hole.

However, if your endpoint adjustment is much lower, under 125 for example, you may need to use a hole that gives a

shorter effective arm length. If your endpoint adjustment for correct high-rate throws is excessively low, you will notice

very poor servo performance.

To put it simply, use the shortest arm length that still allows proper high rate throws. Once you are certain of the correct

arm length, be sure to use thick CA to lock all of your adjustor nuts on all servo arms.

Again, if you have any issues, questions, concerns or problems during assembly, please contact our tech

department at:

We highly recommend

20% expo

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Enjoy Your 3DHS Yak55!

or 1-717-814-5316 10am-4pm Eastern Time, Monday-Thursday.

www.RCGroups.com

as a good source for RC tips, tricks, and information.