As the helicopter has a tandem layout to fly correctly it relies heavily on electronic components.

At the heart of the electronics is a mixer that does several specific tasks -

1. Controls two sets of servos for front and rear rotors with regard to aileron and elevator action. As well as the usual movement of the servos during eCCPM flight the controller also opposes aileron movement on each rotor to induce yaw movement, clever to watch
2. Controls two sets of servos for front and rear rotors with regards to blade pitch angle

3. Mixes degree of blade pitch angle between front and rear rotors to control forward and backward movement

4. Accepts input from yaw gyro to control unwanted yaw movement

5. Accepts input from elevator gyro to prevent unwanted nose up during forward flight

The wiring diagram above gives another perspective of the components involved, the standard wiring diagram with the kit is clearly understood.

The electronic mixer is fixed on one of the barge boards bolted to the alloy chassis.

As some of the single core plugs only have a short lead I found I had to position this at the very rear of the board in order for the cables to reach the only natural position for the reciever.

Be prepared to reposition, I used cheap servo tape to begin with.

Cables run forward and backward to the servos and the reciever.

On the opposite barge board is fitted the motor ESC. Wire according to colour code to the motor as this provides the correct direction of rotation.

DONT! cut the battery wires this short as you wont be able to connect when the fuselage is fitted OOPs! Leave the length as fitted.

Fit the Gyros with the orientation shown.

Adjust yaw gyro to 100% gain, elevator to 50%

Fit a suitable 7 channel receiver roughly in the position shown.

As mentioned earlier the single core leads from the mixer are very short, you will need to position the reciver with pugs vertically aligned and close to the top of the alloy chassis. Make sure that none of the cables protrude above the chassis as the fuselage runs very close to the top edge.

The battery is mounted in the position shown.

Use an 11.1v battery of at least 1500 Mah, liPo prefered for weight purposes.

Lots of wires to connect!!!

Keep as much of the wiring off the top edge of the alloy chassis as the fuselage runs very close to it.

This picture shows the two single core leads from the mixer coloured yellow and blue, these are very short.

I CA'ed the three connecting leads from the mixer for the rear servo leads together in the position shown.

Again note that I have tried to keep any wiring off the top edge of the chassis