1. SAFETY R/C models such as helicopters are not toys! It is necessary to check all instructions of the manufacturer of the model, comply with local laws, carry out preventive checking of the model and repair all deficiencies immediately. Rotor blades and propellers rotate at high speed and, if used incorrectly, can lead to serious injury to persons or damage to the model. If you encounter any problems, contact your model shop or experienced modelers. Especially, pay attention to your own safety and the safety of others. Never fly among humans, or animals, or on private property without authorized access. Fly only in safe places where no additional damage is possible to other objects, because the model can become unmanageable for various reasons, such as failure of electronics or wear parts, pilot error or interference. Do not try to control crashed models nor repair the damaged parts, replace them with new ones. Never fly the model with vibrations, it may be even uncontrollable. Also, flight characteristics can be much worse. Find the source of the vibrations and fix the problem. Spirit is not an autopilot, it is necessary to have knowledge of flying R/C models. The system is only designed to improve flight performance. We recommend using R/C simulators designed for training before the first flight. User takes full responsibility for any damage or injury, because the manufacturer is not able to guarantee correct conditions in which the unit is being used.
2. INTRODUCTION Spirit is a device for stabilizing R/C models such as flybarless helicopters, which features an electronic paddle simulation and a rudder gyro. Thanks to flybarless mechanics, the system improves the efficiency and maneuverability of the helicopter, while also extending flight time. Flight characteristics are easily customizable according to your preference from stable flight for beginners to demanding acrobatics with maximum agility for experts. Because the Spirit uses the most advanced technology, the model can be controlled very precisely even under harsh conditions such as strong wind while maintaining a constant pirouette. This user guide will help you to properly mount the unit on a model and carry out configurations step by step to prepare it for the first flight. It is very important to carefully adjust everything to make your flight as pleasant as possible. Please check our website spiritsystem.com for downloading new firmware and software updates. You can also raise your questions in our forum.
3. INSTALLATION The mounting of Spirit plays an important role for the correct operation of your model. Find a suitable location where vibration is as low as possible that location is usually given by the manufacturer for mounting the gyro. A very significant factor is that the unit should be positioned exactly perpendicular to each rotational axis. The unit can be mounted in two different positions. Depending on your preferences it can be: Horizontal The unit is attached to its lower part so the connectors face upwards. It can be rotated by 180 in yaw axis so that the connectors can be closer to the front or rear of the model. The unit is always positioned parallel to the longitudinal axis of the model.
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Vertical The unit is located on the side so the connectors are also at one of the sides. It can be rotated by 180 in yaw axis so that the connectors can be closer to the front or rear of the model. The unit is always parallel to the longitudinal axis of the model. In order to better avoid vibrations on the model, it is necessary to choose the right doublesided tape. It should prevent the transmission of vibrations from the model, which are undesirable for the unit. Vibrations may be not only created by incorrectly balanced blades or propellers, but also by damaged bearings, bent shafts and other mechanical issues.
4. WIRING Wiring to the unit depends on the type of used receiver. Spirit can be connected as a standalone tail gyro or flybarless system. WARNING Spirit is preprogrammed to 1520us servo neutral impulse and 50 Hz frequency – get servo parameters from the manufacturer. If the neutral impulse is different such as 760us, do not connect this servo yet, it could be destroyed! Some connectors have nonstandard dimensions. They could interfere with neighboring positions after plugging in the unit. As a solution, we recommend to replace it for JR or Futaba connector. Never plug a connector for powering the unit to SYS or ELE/PIT/AIL positions! 4.1. STANDALONE GYRO Owners of a flybared helicopter can take advantage of the headlock gyro, which keeps the tail in the direction given by the transmitter irrespective of effects from wind or any unwanted forces. It is required to connect rudder servo into position CH4 of Spirit unit. In case you use a standard receiver, you will need to connect GEAR (or AUX) from receiver with AUX position on the unit. Secondly, connect cable from receiver position RUD to position RUD on the unit. 4.2. FLYBARLESS Owners of a flybarless helicopter can take advantage of the headlock gyro and also cyclic stabilization. This will stabilize the model in all axes; moreover, it should be less prone to wind, extend flight time and make the model more agile. Flight characteristics should be more pleasant which allows the pilot to carry out even the most challenging maneuvers.
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Rotor blades are directly linked to the cyclic servos, so demands for servos are significantly higher. They should be faster and stronger to respond as quickly as possible to any change. Even flybarless rotor blades are different in some aspects. For better flight characteristics it is recommended to use them. In case you intend to use Spirit as flybarless system all servos should be connected in the corresponding positions CH1 (aileron), CH2 (elevator), CH3 (aileron/pitch CH4 (rudder). For standard receivers it is necessary to use two normal and one special cable. Three connectors should be plugged into the receiver and the end of this cable to the unit. 4.3. CONNECTION OF STANDARD RECEIVER (PWM) The unit is powered by two cables from the receiver connected to AUX and RUD positions. Never plug a connector for powering the unit to SYS or ELE/PIT/AIL positions!
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4.4. CONNECTION OF SPEKTRUM DSM2/X SATELLITE Connection to BEC is optional. In case that the model is powered by an external power supply (other than internal BEC) BEC must be connected to AUX position. Never plug a connector for powering the unit to SYS or ELE/PIT/AIL positions!
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4.5. CONNECTION OF FUTABA SBUS RECEIVER WARNING When using SBUS it is necessary to have an INVERTER which can be purchased separately. Inverter replaces cable between receiver and unit in RUD position. Connection to BEC is optional. For models of class 500 and larger it is recommended to use dual power supply cables due to increased power consumption. That means besides the inverter, additional power supply cable should be connected to AUX position. Never plug a connector for powering the unit to SYS or ELE/PIT/AIL positions! 4.6. UNIT All cables connected to the unit must be oriented so that the signal wire (orange) is closer to the connector pin labels, respectively to center of the unit.
5. CONFIGURATION Configuration is one of the next important steps for correct operation of the system. Configuration is performed using the software, which combines efficiency and simplicity, while offering a set of adjustable parameters, including advanced options. 5.1. CONNECTION WITH PC Before you begin the actual configuration it is necessary to connect the system to a computer. This connection allows socalled USB interface comprising a serial converter and interface cable. Depending on the operating system a driver must be installed after connecting the converter to USB port. In case a driver is installed successfully a new virtual COM port should be visible in the software and device manager. MS WINDOWS Install a driver from software installer. This process will be described in following section. APPLE MAC OS X Download and install a driver from following URL: http://spiritsystem.com/dl/driver/SiLabsUSBDriverDisk.dmg GNU/LINUX Nothing has to be installed.
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5.2. CONNECTION WITH UNIT If you already have attached a USB interface to your computer, it is necessary to also connect the interface cable to SYS position in Spirit. To establish a connection, connect a battery to the model first. To power the unit a BEC, battery, or receiver's power supply can be used. Mostly RUD and AUX connector pins are used to power the unit. The middle wire must be positive voltage potential of the voltage supply, so called Plus (3 – 15V voltage range supported). WARNING If the unit is not configured yet (e.g. new unit) it is advised to not connect a servo. 5.3. CONFIGURATION SOFTWARE INSTALLATION Software is capable of running on MS Windows, Apple Mac OS X, GNU/Linux and Android platforms. If it is not installed yet, you can download it from the Spirit web site: spiritsystem .com . Please download software for your platform, then you should proceed with following guidelines. MS WINDOWS Start the downloaded software – installer and go through wizard. If the driver is not installed yet, please select it in installer to be installed. Installer should go through all necessary steps to state that your computer is prepared for the first start of the configuration software. Configuration software can be launched from your desktop or program list, called „Spirit Settings”. APPLE MAC OS X Install the downloaded software with opening DMG file. Then move the content to Applications. Configuration software can be launched from Applications menu „settings“. with GNU/LINUX Extract all files from downloaded archive to, for example, home directory. Configuration software can be launched from the newly created directory with file „settings.sh“.
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5.4. CONFIGURATION SOFTWARE START If the previous guidelines are met and unit is turned on and initialized (LED lights), you can start the software on your computer. Please start the software; you can do so from e.g. desktop or directory where it was installed. WARNING Configuration software should be started after unit initialization process! Whenever it is connected and the unit is initialized (status LED is on) you can perform any settings. Configuration during flight is forbidden for safety reasons. PROBLEMS WITH WINDOWS 7/8 In case configuration software is not able to detect valid COM port, start the software as administrator.
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5.5. SOFTWARE USAGE After successful connection with the unit, all possibilities should be accessible, otherwise try to either choose another communication port (Device) or try to restart the software, disconnect the unit from the power supply and repeat the procedure. Make sure the software is launched after initialization is done. 5.5.1 CONNECTION TAB This tab indicates the current status of connection, informs about the current version of the firmware, displays the serial number of the unit and allows you to change communication port. In addition it features a wizard for a first setup. We recommend using this wizard, as it guides you through a basic setup in the easiest way.
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5.5.2. GENERAL In case you have already set up the unit using the wizard, you can make additional adjustments. All values here are the same as the ones you have selected in the wizard and vice versa. WARNING Whenever parameters are changed, new value is immediately applied. Unless settings are saved, after disconnecting the power supply all unsaved changes are lost, see Backup tab.
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Position Select a position in which the unit is attached to the model. See section 3. Installation. Select a swash type mixing of your model. In most cases it is CCPM 120 . Mixing in the transmitter must be turned off. It is necessary to set H1 type. Receiver Select the type of receiver you want to use: PWM – standard receiver. PPM single line connection. Spektrum DSM2/DSMX DSM2/DSMX satellite. Futaba SBUS receiver connected via SBUS. Flight style Sets how the model will behave in flight. This parameter is used to control and adapt behavior according to the requirements of the pilot. Lower value means that the model will behave more consistently, more controlled by the unit. Higher value means more natural behavioral. The response of stick movements are more flybarlike. This parameter does not affect how the model will be stable. Most pilots prefer default value 4.
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5.5.3 DIAGNOSTIC TAB If the settings in the previous tab are done it is recommended to do adjustments in the transmitter at this time. Each transmitter is different and the center of the channel impulse is never exactly the same. Even with increasing wear or due to environmental influences, center of channels can move slightly. Another factor is the maximum and minimum value of each channel. Also, there may be greater deviations. Therefore, this software displays these values. So basically you can unify all transmitters to fulfill requirements. WARNING For proper operation of the unit, it is necessary to check values of aileron, elevator and rudder channels. These three channels must be in neutral stick deflections at approximately 0%!
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The unit automatically detects the neutral position during each initialization. Do not ever use subtrim and trim functions on your transmitter for these three channels, otherwise it will be considered as a command to move. So make sure all subtrims and trims are zeroed. It is also recommended to set the maximum and minimum values. Test the minimum and maximum deviation for all channels. If these values are not equal to 100% respectively 100% in the diagnostic tab it is necessary to compensate this difference. You will need to set this with dual rate or travel adjust function for both directions. Besides channels such as aileron, elevator and rudder, it is necessary to check pitch channel, too. For this channel it is allowed to use subtrim function to achieve the center value as precisely as possible When collective pitch curve is in range between 100 and 100%, the middle of the stick should be equal to 0%. After these settings, everything should be configured with regards to the transmitter. But if some channel oscillates around the center too much it may mean wear of the transmitter, respectively potentiometers. This can be compensated by increasing stick deadband, described later in Advanced tab. If you see that values in channel aileron, elevator, or rudder are marked in bold, it is recognized as a command to move/rotate the axis.
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5.5.4 SERVOS TAB This tab is used for servo configuration, you should be especially careful here. Type In this section, set values according to servo specifications for neutral pulse and frequency. For analog servo frequency is usually max. 60Hz. Subtrim (tuning) Ideally, without rotor head, use cyclic leveler to align servo horns so the swashplate will be in horizontal position as accurately as possible, respectively perpendicular to main shaft while servo horns are perpendicular, too.
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This is done by ticking item Subtrim (tuning). Then the unit should be switched into a special mode where the collective position should be neutral all the time. In addition, stabilization will be turned off. Servos can be easily adjusted at this time. When all is completed, a swashplate should be exactly perpendicular to the main shaft and in addition collective pitch must be at 0 (it is possible to measure the angle with a pitch gauge with rotor head and blades now). There is also requirement for servo horns – they should be perpendicular to servo cases, too. All servos, i.e., CH1, CH2, CH3 and CH4, are set separately on individual sliders. CH1 and CH3 are the aileron servos. CH2 controls the elevator and CH4 controls the rudder. It is also recommended to set subtrim and mechanics of rudder so that servo horn is perpendicular to its case and simultaneously rudder pitch is at 0 . This setting will affect rudder stop performance. If all is set up, it is necessary to untick the Subtrim (tuning) item to turn off the special mode. WARNING After exiting the special mode stabilization, steering should work again. Be sure your collective pitch channel is configured correctly in the transmitter. That means you should see 100% to 100% in the diagnostic tab. Double check that 0% in diagnostic tab corresponds with neutral position of a collective/throttle stick (with linear 100% 100% collective pitch curve). Cyclic servos reverse Choose which servos should be reversed – reversed direction of motion. While changing the collective pitch all servos should move in same direction. It is possible to set correct direction of collective travel in the transmitter. Without reverse all servos without reversing CH3 CH3 servo reversed CH2 CH2 servo reversed CH2 & CH3 – CH2 and CH3 are reversed...
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Servo travel correction If you click the button anew, a window should appear. There, you are able to modify and correct travel proportion for each servo individually. Some servos are not very accurate regarding travelling in both directions. This inaccuracy may have a negative impact on flight characteristics. If the window is open, the unit switches to the mode for doing these corrections. It is expected that in the previous step Subtrim (tuning) the swashplate was set at zero collective (0 rotor blades pitch). The procedure is such that you should use cyclic leveler to determine whether there is a deviation on any of the servos in the lowest and highest collective position. For both positions, it is necessary to set the values separately – this is the reason for 6 sliders. If the travel deviation is less than necessary, increase the value. Otherwise, decrease. This correction is also useful, if there is asymmetric geometry on the helicopter. This phenomenon is observable if you cannot achieve same collective pitch in both directions. In this case, it is necessary to modify the minimum or maximum for three servos to the same value. If you are unsure about your settings, it is better to leave the sliders in the middle, position 0. If you are unsure about your settings, it is better to leave the sliders in the middle, position 0.
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5.5.5 LIMITS TAB This tab affects limits and servo travel ranges Cyclic Ring (tuning) This parameter sets the electronic implementation of cyclic ring, which is the function to achieve the highest deflections without mechanical binding (binding of servo horns, pushrods, etc). WARNING The settings here should be done very carefully to avoid damage of the model.
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First, set collective range parameter to, for example, +12 . We recommend using 100% to 100% linear collective pitch curve in the transmitter. Now it is time to set Ail/Ele max. cyclic tilt range. Try to set the largest – possible deflection. This parameter does not directly affect the speed of rotation, but if it is too low, the model may not rotate constantly at all times. This setting should be ideally done with 0 collective i.e., the servo arms should be perpendicular to main shaft. Then carefully check, with the sticks deflections in all directions, that mechanical binding does not occur. You should also check min. and max. collective position. This parameter acts as a socalled electronic Cyclic Ring. If you enlarge the travel of the collective, this parameter must, in some cases, be adjusted. In case the cyclic ring range is insufficient, it is possible that pitchup can happen during fast forward flight (even if the pitchup compensation is on its maximum value). This is because the model will not be able to keep up direction with the configured range. Rudder Limit Min/Max Sets the minimum and maximum deflection of rudder rotor blades. We recommend setting these values for both directions to the maximum allowed range by the manufacturer of the helicopter. Otherwise, rudder cannot be able to keep the yaw direction during demanding maneuvers.
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5.5.6 SENSOR TAB This tab is the last important part of the settings which must be configured. Sensitivity The rotary manipulator adjusts the gyro sensitivity for aileron, elevator and rudder axes. Cyclic gain the higher the value is, the higher the accuracy. The default value is preconfigured to 50% gain. For most models optimal value is around 60%. Rudder Common Gain 100% means no multiplication. Mostly, it is good value for 550class helicopters and smaller. For bigger helicopters it is often higher – 130% could be fine.
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Reverse Sets compensation direction for each axis separately. Swashplate should tilt as it is copying horizon. Rudder blades should compensate to opposite direction as you rotate with the model. WARNING This parameter is the most important one, it is necessary to carefully check the orientation of compensation and set it correctly. As a result of improper compensation, model will be completely out of control and can cause serious damage. Rotation speed The default values should favor beginners more, model should behave slowly. This factor also depends on the mechanical linkage ratio or D/R (Dual Rate) in the transmitter and also on Ail/Ele limit The larger the value, the greater the rotation speed 8 default We recommend to set this parameter within range of 6 12. Mostly, the DFC rotor heads tend to rotate faster so start at lower values.
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5.5.7 STABI TAB Spirit offers you the possibility of model stabilization and rescue mode. In the case of activation of stabilization, model should recover horizontal position without additional corrections. This feature can greatly simplify maneuvering and help with learning process. Rescue mode ccomplements the normal operation of the system. If activated, the model should recover to horizontal position and ascend according to configuration. This function can be used any time when pilot is disorientated or is not able to control the model in current situation. Spirit allows you to assign a stabilization or rescue mode at the gyro gain channel. 0 100% gain in the transmitter is always Head Lockgyro mode and with 100 – 0% gain, selected mode is activated (parameter function).
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This means that instead of normal (rate) mode it will stay in HeadLock gyro mode, plus, rescue/stabilization is activated. So while special mode is activated gyro gain for example 70% is considered as 70%. This behavior can be also observed in Diagnostic tab. WARNING Some transmitters have a gyro range between 0 to 100% where 50% is the middle zero gain (e.g. Spektrum DX6i). Function Select function which should be activated at 100% to 0% gyro gain, respectively. 0% 50% gain in the transmitter. Disabled Normal (Rate) gyro mode Rescue (normal) Rescue mode recover the model to horizontal position – skids always to ground. Rescue (acro) Rescue mode recover the model to horizontal position to inverted or noninverted state. Stabilization Stabilization of the model. – Rescue mode collective Determines how quickly the model will recover to horizontal position. 100% means the maximum deflection of the blades, which was configured in Servos tab. It is very important to check whether the rescue mode works correctly before the first flight (without spinning rotor), i.e., whether the direction of collective pitch is correct. If collective pitch is not positive while helicopter is on the ground, you have to change negative value for this parameter. Aileron / Elevator torque compensation If stabilization is activated and the model moves to any side in aileron / elevator axis you can correct it with this parameter. This value may vary for each model. You can also change the direction of compensation for both sides. Sticks priority Specifies the amount of control while special function is active, i.e.; the higher the value, the more the model will react to stick deflections.
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5.5.8 Advanced tab This tab is addressed especially for advanced pilots. It is highly recommended to understand these parameters. However, the correct settings of pirouette optimization and geometry are necessary here, other parameters, however, depend on the preferences of the pilot. Stick deadband Determines the dead area where the system does not recognize any stick movement depends on the preferences and transmitter accuracy. Geometry 6deg (tuning) For the proper operation of the unit, it is necessary to set this parameter correctly. When enabled, unit is switched to special mode for settings of 6 angle on the main blades. It is necessary to set the value so that the blades’ ...
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angle is at 6 in aileron axis. You need to rotate your rotor head with blades to be parallel to the longitudinal axis of the model. A higher value increases the angle; a lower one decreases the angle. Optimal head geometry should be in the range of about 90 – 160. If not in this range, it is recommended to adjust the distance of a ball joint on the servo horns or perform other mechanical adjustments. Pirouette optimization (tuning) If this parameter is ticked, the unit enters into a special mode in which you should test and simultaneously set correct compensation direction. It is possible to determine correct direction, if you rotate the model around the yaw axis in the same manner as if you were doing stationary pirouettes. The swashplate should stay tilted in this mode, in this case, it should behave as a compass. That means, the swashplate should be tilted at all times to one direction with respect to ground even when you rotate with the helicopter. If this is not the case, it is the wrong direction. You have to reverse it with this parameter. If this is not correctly configured, your model cannot do stationary pirouettes without additional movements. When settings are completed, you can easily untick this parameter to disable the special mode. Tail delay This is a parameter to smooth rudder movements. It also helps to stabilize the rudder – it is a kind of dampening. It can handle even the smallest movements when value is higher. The faster the servo is, the lower the tail delay should be. For analog servos it is recommended to set value around 25. For usual digital servos it is mostly between 15 – 20. For very fast servos (~0.04s/60 ) the value is 5. If the value is too high, rudder could start to oscillate fast and could be shaky or can cause slow rudder stop. Pirouette consistency This parameter determines the consistency of pirouettes and holding performance – fast recovery of correct angle. If pirouettes are not so constant, i.e., pirouette speed is changing during some maneuvers, it is necessary to increase this parameter.
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The value is individual for every model. It depends on many factors of your rudder mechanics, head speed, etc. Before settings of this parameter are performed it is recommended to set the gyro gain first. If the value is too high, the rudder can oscillate in a bigger range. It can cause even bad stopping performance. The value should be between 150 and 175. Rudder dynamic If the rudder does not stop correctly, for example with overshoot, this behavior can be changed with this parameter. 5 – default value The larger the value, the more aggressive behavior of the tail. In case the rotor will overshoot, the value is too high. This parameter affects, among others, response speed of the stick movement higher value means a faster response. If you cannot reach symmetric stop on both sides you will need to set center of the tail to 0 angle. Rudder Revomix Revomix improves tail response, mainly to aggressive changes in collective pitch, when you need more power to hold. Revomix is operating dependently on the collective pitch curve in the transmitter. By default it is turned off, because the user must set the proper portion and direction of the precompensation. The correct direction is such that the rudder blades at full positive or negative position are moved to make force in same direction as the main rotor in most cases clockwise. At 0% of the collective pitch, blades should be at 0 angle. Allowed values: 10 to 10, default 0 – disabled; in most cases it is not necessary to use this parameter. Mostly, rudder without mechanical issues is able to perform very well without revomix. Cyclic phase The value indicates the angle by which swashplate is virtually rotated. For example, value 90 will swap the elevator to aileron and vice versa. This feature is recommended for models with multiblade rotor head. For the most models, we recommend zero value.
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Elevator filter This parameter compensates the elevator bouncing while aggressive movements are performed. The larger the value, the less compensation. A too large value can lead to smooth elevator movement. We recommend setting default value first. Default is 0. Pitchup compensation In case steering in fast forward flight is inaccurate, i.e., small movement reacts too rapidly or model pitches up during fast forward, we recommend to increase this parameter gradually until the phenomenon disappears. If the helicopter pitches up abruptly, this could be caused by too low cyclic tilt range and high collective pitch. In this case, you will need to increase Ail/Ele range as high as the model can handle without any binding. If that does not help, try to increase this parameter too.
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5.5.9 BACKUP TAB You must enter here whenever you want to store the settings permanently to the unit, i.e., settings remain stored even after the power is disconnected. You can also save the settings to your computer here, but also, there is the possibility to load these settings back to the unit at any time. Profile This section allows you to Save and Load complete settings of the unit to specified file. If you have more models, it is not necessary to carry out the settings again, but just load stored settings easily with Load button.
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Unit Any changes to the configuration can be saved at any time in the internal flash memory of the unit. To put all settings to a factory defaults, click Factory Settings. WARNING Remember to save the settings each time you want to store the settings permanently. You must press Save button, otherwise the changes will be lost after the power is turned off!
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5.5.10 UPDATE TAB If you want to change the firmware version you can do so in this tab. Firmware First select data file containing the firmware (*. bin) – Select button. You can get firmware from spiritsystem.com. Once you select a file, press Flash. The upgrade progress will be displayed here. After completion, confirmation dialog box should indicate a successful update. Then, unplug the unit from a power source. Next time it will start with newly flashed firmware. Configuration of the unit is untouched, so you do not need to save/load it.
6. FIRST FLIGHT If you are sure that the unit is correctly configured, you are ready for first flight. 6.1. Preflight control 1. Turn on the transmitter and connect the battery to the model. 2. Wait for the initialization – swashplate jumps. 3. Tilt the model, i.e., tail boom up. Swashplate should compensate for this movement and tilt in the opposite direction keep the horizon. 4. Similarly, tilt it sideways, even in that position swashplate should maintain the horizon. 5. Move the tail boom to any direction, tail slider/rudder blades should go to the opposite side. 6. Check that the sticks of the transmitter react properly correct direction. 7. Place the model on a flat surface, and align the swashplate to run in the event that it is not. Tail slider should be approximately in the center of its travel range. WARNING If you've encountered a problem at some point, do not try to take off! 6.2. TAKEOFF 1. Spin main rotor to the desired speed we recommend to start with slightly lower RPM. 2. Slowly increase the collective pitch from neutral value. 3. Try to steer the rudder and check whether it has sufficient gain and stop performance is good. 4. If control is not very precise, slowly add cyclic and rudder gain as needed...
7. PROBLEMS AND SOLUTIONS Problem description Solution Swashplate or tail rotor drifts after Check trims and subtrims. Sticks neutral initialization position must be 0%, see the Diagnostics tab. Increase Stick deadband in Advanced tab. Steering is not precise Increase cyclic gain and/or increase the gyro gain in the transmitter. Add exponentials in the transmitter. Aggressive cyclic pitch movement Decrease pirouette consistency in leads to rapid tail oscillation in a large Advanced tab gradually by 10 until the angular range phenomenon disappears. Check the tail mechanics, it is necessary that everything runs smoothly. Model oscillates in elevator or aileron Decrease cyclic gain in Sensor tab. axis Tail oscillates rapidly Decrease gyro gain in the transmitter. Model pirouette rotation is too slow/fast Increase/decrease rotation speed for rudder in Sensor tab. Servos jitters randomly without external Check the cable connection between influences the receiver and the unit. During stationary pirouettes model drifts Check the correct direction of pirouette optimization in Advanced tab. Agressive elevator stick movement Increase elevator filter in Advanced tab. leads to bouncing If the result is unsatisfactory, decrease ...
8. THANKS To all who in any way participated and are participating in the development of Spirit, many thanks! Special thanks to: Adam Kruchina Daniel Beneš Dušan Habada Elke Lalanza Jens Lalanza Martin Přinda Martin Štvrtňa Milan Křivda Milan Pěchovič Petr Čada Petr Koťátko René Štefánik...
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