Oh my Gords!

I had the opportunity to buy an “as new” ESky 0704A head Lock Gyro and it arrived today. Below is a summary of how I fitted it.

First of all, remove the standard gyro and clean off any sticky stuff left behind.


Next fix the 0704A gyro to the helicopter. The blue face of the gyro points towards the tail, the attached wires exit from the top-right and the servo connection is top-left, when viewing from the rear of the helicopter. I used 2 sticky pads to fix the gyro to the platform vacated by the previous gyro and to the servos.

Connect the servo cable to the gyro with the black wire at the top.
Connect the 3 pin connector from the gyro to the channel 4 connector, orange wire at the top.
Connect the single orange wire from the gyro to the channel 5 connector, again, orange wire to the top.

Now it is time to bench test the installation. Turn on the transmitter and check/zero trims as usual. Ensure that the gyro switch is up / away from you (this is the standard, non head hold, mode).

Connect the helicopter battery and wait for the flashing red light to go blue and the tail servo to initialise. If it doesn’t, then recheck the gyro connections.

Check that all functions still work (right stick all directions), then check that the rudder (left stick left/right) operates correctly.

Enable the head hold function by flicking the gyro switch down / towards you. The tail servo should stay where it is. If it creeps either way, then turn off head hold mode and adjust the rudder trim until enabling head hold mode does not cause the servo to creep.

To check head hold mode is working, rotate the helicopter left and right - you should see the tail servo react.

Once you are happy that it’s working OK, tidy up the cables by fixing them to the frame with tie wraps (or your own preferred method).

The helicopter is ready for flying