Fly-Sky Configuration
and Helicopter Setup Manual

Setting up the Model

What this section covers:

Don't worry if you do not understand the terminology in the list above. Each will be explained in detail as we progress through the setup.

This manual is not intended to show you how to build a kit. However there is enough information contained here to build one. If you are working with an RTF (Ready to Fly) model, the following steps will allow you to confirm that your model was assembled correctly.

If you have the motor installed. Disconnect two of the three wires (it doesn't matter which ones). We will apply power to the helicopter, and do not want any chance of the motor starting up. This warning will be mentioned numerous times until we are ready for you to do something that requires the motor.

You should already have the servos installed, and the wires connected to the receiver as shown in Fig 6, and the wires secured to the frame so that they will not be caught in any moving parts. If not, then install the servos now. Refer to the TREX manuals, or your particular model manual to place the servos in the proper orientation. Use the same servo model for all three cyclic servos (Do not mix servo brands or sizes for your cyclic servos). These are the servos that will connect to and control the Swashplate.

If you have not installed the servos, I have found it easier to remove the right side frame(s) (on the seV2 stacked frame model) so that you can route the cables inside the frame and tie-wrap them down out of the way.

If you have removed the head, you will want it put back on temporarily until we have discovered the exact center of swashplate travel (part of the first servo alignment process).

Now that the radio is configured for an initial setup, we turn our attention to the model. The first thing we want to do is confirm we have the servos wired correctly and they travel in the right direction.

The servos should be plugged into the receiver in the following channels.

CH1 – Aileron servo black wire towards the edge of the receiver. (All connections will have the black wire connected towards the edge of the receiver (see Fig 6 below). (Note: The TREX manuals label the left side servo as Aileron, and the right side as the Pitch servo. We don't know if this is a typo, but the accepted name for CH1 right side servo is the Aileron servo.)

Fig 6

*Note: Some servo manufacturers use a different colors for the wires. Most of them use the Black wire for Negative, Red (center wire) for Positive, and a different color for the signal wire. Verify the wire color codes with your servo manufacturer.

CH2 – Elevation Servo. This servo is center line with the main shaft. Typically has a guide that prevents the swash plate from rotating. On the EXI seV2 it mounts behind the main shaft. Some models mount this servo in front of the main shaft.

CH3 – Throttle Speed, connects to the ESC. If the ESC has a built in BEC (Battery Elimination Circuit), then the three small wires go to the receiver Channel 3 to provide the main power for the receiver, servos and gyro. If you are using an external BEC or battery to power the receiver, then make sure that the ESC does not also supply this power. You can cut and terminate/insulate the center red wire from the ESC.

CH4 – Gyro / Rudder control. Typically the Gyro plugs into CH4, and the rudder servo plugs into the Gyro. Most Gyros have a sense/gain control line (single wire) that will connect to CH5 to allow adjusting Gyro Gain settings from the radio. Older gyros only provide adjustment of gain at the gyro itself. If you have one of these older gyros, discard it, and purchase a gyro with a Gain Sense wire.

CH5 – Gyro Gain / Sense line. If your gyro is equipped with Sense / Gain control wire, then plug this into CH5. This is often a single wire without another +/- pair, so be extra careful not to damage this delicate connection.

CH6 – Pitch Servo. Typically this is the servo mounted to the left side of the helicopter swash plate.

At this point you should have the servos installed, and wired to the receiver, the servo horns are not attached to the servo, and the servo linkages are not attached to the servo horns. The radio has been setup for initial settings mode, and your motor wires have been unplugged.

   Prev    Next - Binding the Transmitter

Skip Navigation Links.