Check the direction of rotation of the EDF. If incorrect, simply swap two of the three wires between the ESC and motor.
Check the correct position of the centre of gravity (CG) – 80–85 mm behind the leading edge of the wing (in other words 125–130 mm behind the front edge of the wing moulding) (Fig. 9). Adjust the CG position by moving the flight pack - if you could not reach the recommended position, do not hesitate to add an appropriate amount of lead to the nose or tail. An extra couple of grams won’t spoil the flying characteristics - but the incorrect CG position is a killer.
Fully charge your flight pack and transmitter batteries, check the proper function of your radio and perform the range check of your radio according to its instruction manual. The range has to be almost the same with the motor off and at full throttle (no more than a 10 % decrease is acceptable). DO NOT try to fly unless the range check is 100% successful.
