User manual FUTABA MCR-4A

[. . . ] It is not necessary to mount the gyro near the main shaft of the helicopter, but it is very important that the mounting area chosen is rigid. Please refer to your helicopter manufacturer's instructions for recommended mounting locations. Installing the gyro sensor When mounting the gyro in a larger electric or . 50 through . 91 size nitro helicopter, we recommend using one 2mm Mounting Pad. Gyro Sensor 2mm Mounting Pad Gyro Mount TROUBLESHOOTING If you experience erratic gyro operation (drifting, not holding well or inconsistent pirouette rate), please follow the troubleshooting tips listed below. Always verify that your model's tail rotor control and drive system are working correctly. 3 GYRO SENSOR INSTALLATION 2. [. . . ] If any other information is needed please see the "S. Bus Basic Setting" section of the MCR-4A Instruction Manual. 5 CONTROL BOX INSTALLATION Using wire mounts, wiring fixtures molded into the helicopter, or hook and loop material, route the extensions to the receiver. Ensure that the extensions leading to the receiver cannot become entangled in rotating components and make sure the extensions are not rubbing against metal or carbon fiber which may damage the wires. Once the power system is installed and connected, please move onto the next step to learn how to program the gyro. MCR-4A BASIC SETUP Turn your transmitter on and allow it to initialize. Switch the helicopter on and allow the MCR-4A to initialize. During the initialization of the gyro, the screen will show an animated helicopter. Once the screen changes to show status, the initialization is complete. 6 MENU STRUCTURE Push DATA +/­ key Push MODE +/­ key Max. revolution Home screen Engine runtime OLED display mode LED display mode Operation mode Gyro Basic Gyro Expert Governor Basic Governor Expert S. Bus Basic Push MODE +/­ key for 1 second From the home screen the mode [+] and [­] button will take you through the various status screens for the gyro or governor. It also displays basic options. 7 MENU STRUCTURE From the home screen the data [+] and [­] button will navigate the upper menus which include the Home screen, Gyro Basic, Governor Basic and S. Bus Basic menus. Once the menu you would like to enter is selected (for example Gyro Basic), simply press the mode [+] or [­] button to navigate the options. Once you have found the option you would like to change simply press the data [+] or [­] button. Please take a few minutes to become accustomed to navigating the interface. Turn the receiver power on and allow the gyro to initialize. Enter the "Gyro Basic Setting" mode and go to parameter (4) "Servo Limit Point Setting". While in the servo limit setting the servo will remain centered. 90° Place an appropriate servo arm onto the servo and ensure that it is perpendicular to the tail rotor pushrod as shown. Remove the unused sides of the servo arm. Install the control ball supplied with your helicopter onto the servo arm. For larger electric models or nitro powered models we recommend placing the ball 13. 25mm from center. Once the control ball has been installed, place the arm back 10 TAIL ROTOR SERVO INSTALLATION onto the servo ensuring that it is perpendicular to the tail rotor pushrod. Install the servo arm screw. 13. 25 -16. 5 mm (Depending on T/R linkage geometry) Carefully hold the tail rotor pushrod ball link onto the servo arm and verify that the tail rotor operation matches the transmitter stick input. If necessary, reverse the operation direction within your transmitter. Press the mode [+] key until "GY. Dir Normal" is shown on the screen. Carefully hold the tail rotor pushrod ball link onto the servo arm. [. . . ] the MCR-4A servo type parameter matches the servo you are using. the tail rotor servo arm is perpendicular to the pushrod and the pitch slider is centered. the servo does not bind when full left or full right tail rotor is applied. the gyro is operating in the correct mode (AVCS or Normal). [. . . ]