8UHPS / 8UHFS I M
Thank you for purchasing a Futaba® 8Usuper series digital proportional R/C system. This system is extremely versatile and may be used by beginners and pros alike. In order for you to make the best use of your system and to fly safely, please read this manual carefully. If you have any difficulties while using your system, please consult the manual, your hobby dealer, or Futaba. This manual is not just a translation and has been carefully written to be as helpful to you, the new owner, as possible.
The RBRCTM SEAL on the (easily removable) nickel-cadmium battery contained in Futaba products indicates that Futaba Corporation of America is voluntarily participating in an industry program to collect and recycle these batteries at the end of their useful lives, when taken out of service within the United States. The RBRCTM program provides a convenient alternative to placing used nickel-cadmium batteries into the trash or municipal waste which is illegal in some areas.
To ensure the safety of yourself and others, please observe the following precautions: Ni-cd Battery Charge the Batteries! Don't forget to recharge the batteries before each flying session. Plug in the charger that comes in this system and hook up the transmitter and airborne batteries the day before a planned flying session. A low battery will soon die causing loss of control and a crash.
movement of the sticks. If a servo operates abnormally, don’t attempt to fly until you determine the cause of the problem. Finally, before starting the engine, be sure to check that the transmitter model memory is correct for the chosen model, and (for PCM receivers only) that the fail safe system functions properly when the transmitter is shut off. While you’re getting ready to fly, if you place your transmitter on the ground, be sure that the wind won’t tip it over.
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Safety Precautions (DO NOT operate without reading).............................................................. 1 Introduction to the 8UH System.................................................................................................. 6 Contents & Technical Specifications........................................................................................... 7 Optional Accessories ...................................................................................................................
PMIX-1-2 ........ Programmable Mixing................................................................................ 51-52 HOV-TH.......... Hovering Throttle ............................................................................................ 53 HOV-PI ........... Hovering Pitch................................................................................................. 53 GYRO.............. Gyro Mixing.............................................................................................
The versatile FP-T8UHFS/T8UHPS PCM1024 multi-function 8-channel transmitter may be used with any Futaba PCM1024 receiver! In addition, your system will work with Futaba FM/PPM receivers when you select the FM transmission option. The large liquid-crystal display panel allows rapid data input into its easy-to-read LCD display. To allow efficient programming, all of the transmitter’s functions have been separated into Basic Menu and Advanced Menu functions.
Specifications and ratings are subject to change without notice.
Antenna Dust cap (optional memory module plugs in here) Be careful not to bend your antenna when you collapse or extend it. CH8 knob Antenna must be fully extended when flying.
RF module To remove, press the tabs together and gently pull rearwards. To install, line up the connector pins with the socket in the rear of the module and gently snap into position. Trainer function /DSC function connector Ni-Cd battery pack Charging jack Battery connector location PUSH Battery cover NOTE: If you need to remove or replace the transmitter battery, do not pull on its wires to remove it. Instead, gently pull on the connector’s plastic housing where it plugs in to the transmitter.
1. Connect the transmitter charging jack and airborne Ni-Cd batteries to the transmitter and receiver connectors of the charger. 2. Plug the charger into a wall socket. 3. Check that the charger LED lights. The batteries should be left on charge for about 15 hours when recharging the standard NR-4RB and NT8S600B Ni-Cd batteries.
You may adjust the stick tension of your sticks to provide the “feel” that you like for flying. To adjust your springs, you’ll have to remove the rear case of the transmitter. First, pop off the battery cover on the rear of the transmitter. Next, unplug the battery wire, and remove the battery and RF module from the transmitter. While you’re removing the RF module, pay attention to the location of the pins that plug into the back of the module.
Receiver output channel 1 Helicopter (HELI) Aircraft (ACRO) Aileron 2 3 4 5 6 Elevator Throttle Rudder Gyro sensitivity Pitch Right aileron (combined R. flap + aileron*) Elevator Throttle Rudder Landing Gear Left aileron (combined L.
While you are installing the battery, receiver, and servos into your model’s fuselage, please pay attention to the following guidelines: Use the supplied rubber grommets when you mount each servo. Be sure not to overtighten the screws. If any portion of the servo case directly contacts the fuselage or the servo rails, the rubber grommets will not attenuate vibration, which can cause mechanical wear and servo failure. 2.3-2.6mm nut Flat washer Rubber grommet Brass eyelet Servo mount 2.3-2.
The following frequencies and channel numbers may be used for flying aircraft in the United States: 72 MHz band 50 MHz Band (Amateur license required) Installing your frequency number indicator: It’s very important that you display your transmitting channel number at all times. To install your indicator, peel off the channel number’s backing sheet, and carefully stick the numbers to both sides of the number holder.
When you first turn on your transmitter, a confirmation beep sounds, and the screen shown below appears. Before flying, or even starting the engine, BE SURE that the model name appearing on the display matches the model that you are about to fly! If you don’t, servos may be reversed, and travels and trims will be wrong, leading to an immediate crash. Current Screen Display < > Normal screen < = Advance menu screen > = Basic Menu screen Model Name (to change, see p.
An alarm or error indication may appear on the display of your transmitter for several reasons, including when the transmitter power switch is turned on, when the battery voltage is low, and several others. Each display has a unique sound associated with it, as described below. The BACKUP ERROR warning occurs when the transmitter memory is lost for any reason. If this occurs, all of the data will be reset when the power is turned on again.
This warning appears when an [optional] CAMPac memory module is used in the transmitter for the first time. When the Plus (+) DATA INPUT key is pressed, initialization of the module begins, after which the memory module can be used. Once the module is initialized, the display will not appear again. Warning sound: A single beep This single beep lets you know that the RF module is not installed in the transmitter.
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Pages 20 to 45 describe the Basic Menu functions for helicopters. Please note that most of these Basic Menu functions are the same for aircraft (ACRO setup), sailplanes (GLID1FLP/2FLP setups), and helicopter (HELISWH1/SWH2/SWH4/SR-3/SN-3) setups. Starred items are for helicopters only. Map of Basic Helicopter Functions .............................. 20 Map of HELI Advance Menu Functions ...................... 21 Helicopter Setup Example ............................................
Parameter Submenu PARA NEXT Data reset ATL setting PARA DATA RSET PARA ATL PARA MOD TYPE HELI Modulation type REVERS Reverse F/S Failsafe settings EXP- Exponential D/R- Dual Rates ATV- ATV function REVOLU NORM Revolution Normal PI-CRV NORM Pitch Curve Normal TH-CRV NORM Engine start PARA EG/S Model type HELI Basic Menu The function are switched with the Edit keys shown in the figure.
GYRO Gyro Mixing HOV-PI Hovering Pitch HOV-TH Hovering Throttle PMIX-2 Programmable Mixer #2 PMIX-1 Programmable Mixer #1 DELAY Delay OFSTiv Offset iv OFST-2 Offset 2 OFST-1 Offset 1 TH-HLD Throttle Hold TH-CRV IDL-2 Throttle Curve Idle-up 2 TH-CRV IDL-1 Throttle Curve Idle-up 1 TH-CRV NORM Throttle Curve Normal (Advanced Menu initial screen) Go to the Special Mix Menu by pressing both these keys simultaneously. Return to Startup screen by pressing the RETURN keys simultaneously.
HELICOPTER SETUP INSTRUCTIONS The following example shows how the T8U may be programmed for a contest helicopter model. The settings presented here are for a typical model. Your model’s settings are likely to vary from these, but the procedures given will still be applicable. 1. Memory Selection 7. Throttle Cut Setting Use the Model menu Select function [MSL] After a flight, use the Throttle Cut function to to select a model memory. Choose the kill your engine with the trainer switch.
• Throttle Hold [HOLD] – for autorotation. ON at Switch E forward position. Move the hovering pitch knob (CH6) and the hovering throttle knob (CH7) to the center positions (if these functions are activated in the Advance Menu, the knobs may be moved in flight to make adjustments). Next, input pitch curve data so that the normal pitch used in hovering varies between -2.5° and +10°. The pitch angle should be set so that the high throttle pitch rate is large.
14. Throttle Curve Setting: move to the THCRV IDL2 menu and activate with the (+) key. Input the trial throttle curve points as shown below: Point 1 2 3 4 5 Setting (%) 60 60 60 75 100 Point Setting (%) Blade pitch 1 0 -4° 2 25 3 50 +4.5° 4 65 5 100 +12° 19. Rudder→Throttle Mix Setting Rudder→Throttle mixing is useful for hovering eight, nose-in circle, Top Hat, Pirouette, and other aerobatics.
flight conditions. You can set different delays for aileron, elevator, and rudder. The delays you set apply to all flight conditions. We recommend trying very small values for the initial settings, say 5 - 10%. A 25% delay is about a half-second transit time between neutral settings. You may use the Hovering Pitch and Hovering Throttle functions for fine trimming changes due to humidity, etc. This concludes the example setup procedure for helicopters.
The throttle curve normal function is used to input the normal (NORM) throttle curve, which is usually not a linear response to throttle stick motion. The normal throttle curve is the basic throttle curve intended for flight around hover. Together with the pitch curve (normal), the throttle curve is adjusted for best climb at a fixed engine RPM. You can program a 5-point throttle curve to get the best engine response relative to throttle stick motion.
The Normal pitch curve function contained in the Basic Menu sets the normal (NORM) curve. The Normal pitch curve is the basic pitch curve for flight near hover. Together with the normal throttle curve, the normal pitch curve is adjusted for best vertical performance at a constant engine speed. You can program the response over a 5-point curve so that you may choose the best rotor pitch angle relative to throttle stick movement. Each of the five points can be adjusted over a 0% to 100% range.
The Normal revolution function mixes pitch commands into rudder in order to suppress the torque generated by changes in the main rotor’s pitch angle. Three are three different settings of revolution mixing available: normal (NORM), idle-up 1 (IDL1), and idle-up 2 (IDL2). Only normal revolution mixing is displayed on the Basic Menu. The revolution mixing rate can be input on a 5-point curve.
The ATV function is used to set the travel of each servo in both directions. At a 100% setting, the throw of the servo is approximately 40° for channels 1 – 4 and approximately 55° for channels 5 – 8. Reducing the percentage settings reduces the total servo throw in that direction. The ATV menus should be set to prevent any servo binding at extreme travel. Setting ATV on your system: Channel display To D/R function Right/down Left/up servo throw servo throw Range: 30 - 140%.
Setting Dual Rate Values and Switches Channel display: AI = Aileron, EL = Elevator, RU = Rudder (The value of the stick adjusted by stick operation blinks.) Range: 30 - 140%. Initial value=100% Indicates top or bottom switch position (top shown) To EXP function 1. Aileron adjustment: place the aileron D/R switch and stick in the direction you want to adjust and set the rate with the (+)/(-) keys. 2.
Exponential settings may be used to change the response curve of the servos to make flying more pleasant. You can make the servo movement less or more sensitive around neutral for aileron, elevator, throttle, and rudder. It can also be set for each side of the dual rate switches. Negative exponential (–) makes the servo movement around the stick neutral less sensitive and positive (+) makes the servo movement more sensitive.
The Fail Safe function is used to prescribe what the PCM receiver will do in the event radio interference is received. In this menu, you may select from one of two options of operation for each channel. The "NORM" (normal) setting holds the servo in its last commanded position, while the "F/S" (Fail Safe) function moves each servo to a predetermined position. The default setting is NORM (normal) for all channels. The use of the fail safe function is recommended from the standpoint of safety.
The servo reverse function may be used when you need to change the direction that a servo responds to a control stick motion. When you use this function, BE SURE THAT YOUR CONTROL IS MOVING THE CORRECT DIRECTION. If you are using Advance Menu functions, set correct travels in the REVERS menu first, before setting up the Advance Menu. Reversing Servos Indicates NORM or REVERS throw setting Channel display NORM or REV display indicates travel setting *The blinking item is what is being set.
The Date Reset function is used to clear out an existing set of model data. This may be used to input new model settings into a memory used for another model. It resets all data to initial values. Resetting the memory Confirmation message "OK?" To INVERT or SWASH These keys are used to MODEL DATA RESET move through submenus in function Press both the (+) and (-) keys the PARA function. simultaneously. The confirmation message "OK?" is displayed at the top left corner of the screen.
This function is used to select the type of model to be programmed in the current model memory. You may select from helicopters of five swash types (HELISWH1/SWH2/SWH4/SR-3/SN-3), aircraft (ACRO), and gliders with one or two flap servos (GLID1FLP, GLID2FLP). Swashplate Type Setting Procedure HELISWH1 Type This type’s helicopter has independent aileron and elevator servos linked to the swashplate. Most kits are HELISWH1 type.
HELI SN-3 Type Use SN-3 Mixing if the servo inputs match the figure. With Aileron inputs, the three servos tilt the Aileron swashplate left and right; With Elevator inputs, the elevator and pitch servos tilt the swashplate fore and aft; With Pitch inputs, all three servos raise the swashplate up and down. Use the reversing function (REV) as necessary to get the proper aileron, elevator, and pitch operations.
You can use Swash AFR rate settings to reduce (or increase) the function rate when SWH2, SWH4, SR-3, or SN-3 is selected as the swash type. The function rate reduction or increase for the aileron, elevator, and pitch may be controlled by this menu. Setting Swash AFR rate values To INVERT function These keys are used to move through items 1-3 in this menu. 1. Aileron adjustment: Set the rate with the (+)/(-) keys. 2. Elevator:(except SWH2 type) Set the rate with the (+)/(-) keys. 3.
The Invert function is used to make inverted flight easier. Instead of having to learn to reverse controls mentally, when switch H is moved forward (and the INVERT function is activated), the direction of operation of the elevator, rudder, and pitch servos is reversed. In addition, the pitch servo throw is reduced to about two-thirds of the normal throw. Before using the INVERT function, be sure that you helicopter is trimmed for good normal flight.
The 8UH has digital trims which are different from conventional mechanical trim sliders. Each trim control is actually a two-direction switch. Each time the trim switch is pressed, the trim is changed a selected amount. When you hold the trim lever, the trim speed increases. The current trim position is graphically displayed on the screen. The Trim function includes a number of submenus that are used to manage the trim options. This may be better understood by viewing the menu structure on p. 20.
The DISP function swaps the black and white displays in the graphic trim position display shown on the screen. We suggest you try both settings and see which one is better for you. (The reverse display is not affected by the Data Reset command.) Setting you trim displays These keys are used to move through submenus in the TRIM function.
The Trainer function is used to train novice pilots using an optional trainer cord connecting two transmitters. The instructor may choose that all channels be controlled by the student, or that certain designated channels be operated by the student and the remainder by the instructor. Pulling on Switch F allows the student to control the selected channels on the model. You may use your 8UH transmitter with any transmitter of the SKYSPORT, Super 7, or 1024Z series of transmitters.
The TH-CUT function is used to kill the engine at the end of a flight. The engine can be stopped with one touch with switch F (the momentary trainer switch is the initial setting, but you may select another). This function eliminates the need to move the trim to kill the engine and then move back to the idling position after each flight.
The Model function includes a number of submenus that are used to manage the model memory. This may be better understood by viewing the menu structure on p. 20. These keys are used to move through submenus in the MODEL function. To TIMER function Call the function in the MODEL submenu with the (>)/(<) keys. "NEXT" indicates that there is a group of submenus in the MODEL function .
Copying from one model memory to another These keys are used to move through submenus in the MODEL function. To TIMER function Source to copy FROM (current model settings in memory #1) MODEL DATA COPY Select the destination model number with the (+) and (-) keys. When you have the right number, press the (+) and (-) keys simultaneously. The confirmation message To TH-CUT function Data input keys Copy destination "OK?" is displayed.
The Timer Menu controls an electronic clock that may be used to keep track of time remaining in a competition task window, flying time on a full tank of fuel, amount of time on a battery, etc. The timer’s settings may be set independently for each model, and is automatically updated each time the model is changed. The timer can be set to count up to 59 minutes 59 seconds. You may choose either a count-down or count-up timer mode.
Pages 46 to 60 describe the Advance menu functions for both helicopter model types (HELISWH1, HELISWH2, HELISWH4, HELISR-3, HELISN-3). Helicopter Basic Menus are in pages 26 to 45. TH-CRV ................Throttle Curve................................................47 TH-HLD ................Throttle Hold .................................................49 OFST-1-2-iv ..........Offset 1-2-iv...................................................50 DELAY..................Delay....................................
You can use Throttle Curve menus to program a five-point curve so that the engine speed responds the way you like relative to movement of the throttle stick. You can set each of the five points over a 0% to 100% range. There are three throttle curves: normal (NORM), idle-up 1 (IDL1), and idle-up 2 (IDL2). Only the basic normal throttle curve is displayed in the Basic Menu, but all the curves may be programmed in the Advance Menu.
Inputting the Throttle Curve in Normal, Idle-up 1, and Idle-up 2 The Throttle Curve Normal function is on at startup. The blinking item on the Top arrow indicates the current stick setting screen is the position (2 arrows means it's between current setting item. points) Curve points 1-5 The bottom arrow shows the point on the five-point curve currently being set.
The Throttle Hold function holds the engine throttle in the idling position and disengages it from the throttle stick, whenever switch E is activated. It is commonly used during autorotation. You can set the throttle position to be held over a -50 to +50% range centered about the throttle idle position. The throttle hold function also includes a rudder offset option.
The Offset 1 , Offset 2, and Offset iv functions are used to offset (change the neutral position) of the aileron, elevator, and rudder when switch G is used to switch to idle-up 1 (or 2) or switch F is used to switch to inverted flight. This function may be used to automatically change the trim of a helicopter flying at high speed. A clockwise-rotation rotor helicopter tends to drift to the right at high speed, so an aileron offset may be applied to offset the helicopter to the left.
Setting Delays The Delay function is automatically activated when either To PMIX-1 These keys are used to move Offset, Revolution mixing, or Throttle hold are activated. through the three submenus in function 1. Aileron delay the DELAY function. Input the desired Aileron delay with the (+)/(-) keys. 2. Elevator delay Input the desired Elevator delay with the (+)/(-) keys. 3. Rudder delay Input the desired Rudder delay with the (+)/(-) keys.
(Continued from preceding page) Link function ON/OFF indicator To PMIX-2 These keys are used to move around in the PMIX-1 menu function 5. Link function setting Turn the Link function ON or OFF with the (+)/(-) keys. When the Link function is ON, ">" is displayed after the slave channel on the screen. 6. Trim setting This couples the master channel's trim with the slave function. Select ON/OFF with the (+)/(-) keys. Trim ON/OFF indicator Displays offset position 7.
The Hovering Throttle function may be used to trim the throttle near hover without affecting pitch. Its position can be memorized so that when the model memory is recalled, the original trim is repeated by rotating the knob to its center position. When the hovering throttle knob is turned clockwise, the engine speed rises and when turned counterclockwise, the engine speed drops. Changes in rotor speed caused by temperature, humidity, or other conditions can be accommodated.
The gyro mixing function is used to adjust the gyro sensitivity from the transmitter. Use this function by connecting the gyro sensitivity adjustment input connector to the channel 5 output of the receiver. Switch H or switch G (idle-up switch) can be selected, and each direction of the changeover switch can be adjusted. Switch H: The UP and DOWN sides sensitivity can be adjusted. Switch G: The NORM, IDL1, and IDL2 sensitivities can be adjusted. Entering Gyro Sensitivity Values 1.
Caution: The relationship of the governor speed setting rS1~rS3 and the switch positions conforms to the table above. Since the governor mixing function may not be used or the direction may be different, if this mixing was turned ON, first check the direction. At throttle hold, always check that the governor is OFF. Conversely, when the speed value rises, reverse it as described in "Throttle hold OFF direction selection". Setting the Governor Mixing Function 1.
→ → The Throttle→Needle mixing function is used to control the engine’s mixture using a 5point curve relative to throttle stick movement . The engine must be equipped with a mixture control system, such as needle control or some other mixture adjustment, and the needle servo must be plugged into CH8. The CH8 knob may be used for High-side mixture adjustment when the idle-up (IDLE) function is ON.
The inverted cross position function sets the point at which low-side pitch is crossed when switching between forward and inverted. It is commonly set to a value of 30%. Entering Inverted Cross Position To REVOLU function 1. Activate Invert Cross Function Press the (+) key to activate the INVERT CRSS function ("ON" or "OFF" will be displayed, depending on the Invert switch H's position). Use the (-) key to INHibit the mixer.) 2.
Revolution IDL1 Curve Example Revolution IDL2 Curve Example +100% ← Servo Response → ← Servo Response → +100% +50% -25% 1 -17% -10% 0% 10% 0% 2 3 4 5 Curve Point LOW ← throttle stick → HI -50% -100% +50% -25% 1 -17% -10% 0% 10% 0% -50% 2 3 4 5 Curve Point LOW ← throttle stick → HI -100% Inputting Revolution Five-Point Curves The Revolution Normal function is on at startup. It can be turned ON/OFF with the (+)/(-) keys.
The pitch curve is defined by a 5-point curve so that you may set the best pitch motion relative to throttle stick movement. Each point on the curve can be adjusted over a 0% to 100% range. The T8U system contains five pitch curves: normal (NORM), idle-up 1 (IDL1), idle-up 2 (IDL2), hold (HOLD), and inverted (INVR). The basic normal pitch curve is the only one displayed in the Basic Menu, but all of the pitch curves can be viewed in the Advance menu.
SETTING METHOD The Pitch Curve Normal function is on at startup. Top arrow indicates the current throttle The blinking item on the setting screen is the stick position (2 arrows means it's current setting item. between points) Curve points 1-5 The bottom arrow shows the point on the five-point curve currently being set.
The following section (pages 62 – 68) describes how to use the airplane-specific Basic and Advance Menu functions (model type ACRO). The functions of the other Basic Menu items are contained in the Helicopter (HELI) section, pages 19 – 60. The airplane Advanced Function section begins on page 69. Airplane Functions Map ............................................... 62 Airplane Setup Example ............................................... 63-64 Airplane Trimming Chart ......................................
AI-DIF FLPTRM FLPRON PMIX-7 PARA NEXT REVERS F/S IDL-DN Aileron Differential Flap Trim Flaperon Programmable Mixer #7 PMIX-6 Programmable Mixer #6 Parameter menu PMIX-5 Programmable Mixer #5 Reverse PMIX-4 Programmable Mixer #4 Failsafe settings PMIX-3 Idle-Down PMIX-2 EXP- Exponential D/R- Dual Rate Programmable Mixer #3 Programmable Mixer #2 Programmable Mixer #1 PMIX-1 (Special Mix menu initial screen) ATV- TH→NDL ATV function (Basic Menu initial screen) TH-DLY Throttle-Needle
AIRCRAFT SETUP INSTRUCTIONS (GENERAL 120 CLASS STUNT PLANE) The aircraft setup procedure presented below uses a F3A-class model as an example. You may use a similar procedure to set up your own model, but your setting’s numbers and percentages will probably be different. receiver. If you make a change, it won’t take effect until you cycle the power off and on again. 1. Enter the Model Select menu (MODEL) by pressing the two BASIC keys, then pressing one of the MODE keys until “MODEL” appears.
Rudder setting: adjust the rudder travel to roughly 45 degrees in the left and right directions with the ATV function. 9. Snap Roll (SNP, p. 77, Advance Menu) Activate the Snap Roll function by pressing the key. plus (+) Set the deflection rate for each switch position. Be sure that the direction of motion of each control is correct. Aileron: 80 - 100% Elevator: 90 - 110% Rudder: 60 - 70% 7. Dual Rate setting (D/R, p. 29) Adjust the servo motions with the D/R function (in the Basic menu).
The following chart may be used to systematically set up and trim a model for straight flight and aerobatic maneuvers. Please note that for best results, trimming should be done in nearcalm conditions. Before you decide to make a change, be sure to try the test several times before making adjustments. If any changes are made, go back through the previous steps and verify that they are not also affected. If they are, make further adjustments as necessary. To test for _ 1.
To test for _ 9. Aileron differential Test Procedure Method 1: fly model toward you & pull into a vertical climb before it reaches you. Neutralize controls, then halfroll the model. Method 2: fly model on normal pass and do three or more rolls Method 3: fly the model straight and level and gently rock the aileron stick back and forth Observations A. No heading changes B. Heading change opposite to roll command (i.e. heading veers left after right roll) C. Heading change in direction of roll command A.
The Idle Down function lowers the engine idling speed when either the airbrake switch (SW C) or landing gear switch (SW G) is activated. This function may be used whenever you wish to raise the engine idling speed to prevent the engine from stalling, and to lower the engine idling speed for landing. Setting the IDL-DN function 1. Activate the IDL-DN by pressing the (+) key ("ON" or "OFF" will be displayed). You may turn off the function by pressing the (-) key (INH will be displayed).
The Throttle Cut function provides you an easy way to stop the engine by simply flipping a switch with the throttle stick at idle, which commands the throttle servo to move a prescribed amount. The amount of movement is largest at idle and disappears at high throttle. Both the switch’s location and activation direction may be chosen by the owner. Setting up Throttle Cut Operations Turn the TH-CUT function ON or OFF by pressing the (+) key ("ON" or "OFF" displayed depending on switch position).
AIRCRAFT (ACRO) ADVANCE MENU FUNCTIONS The next section of this manual, pages 69 to 78, describe how to use the functions in the ADVANCE MENU with the aircraft (ACRO) model mode. Some of these functions are also used with glider model modes (GLID1FLP, GLID2FLP). PMIX-1-7..... Programmable mixers 1-7...................... 70-71 FLPRON ...... Flaperon (combined flaps & ailerons) ... 72 FLAPTRM... Flap trim (camber adjustment)............... 73 AI-DIF ......... Aileron differential ...........................
Your 8UH system contains seven separate programmable mixers with unique mixing capabilities. You may use mixing to correct bad tendencies of the aircraft during aerobatics, and to make operation more pleasant. Besides mixing between arbitrary channels, the mixers may be linked with the Advance menus in the 8UH. They can also be set to provide fixed offsets. You may select which switch activates your mixers.
(Continued from preceding page) (Mixer# 6-7 only) 4. Input 5-point curve values Select the curve position “POS1” with the CURSOR keys and set the rate with 5-point curve the (+)/(-) keys. Set rate Range:-100 to +100% (Initial value: 0%) Initial value (0%) +100% -If you’re unhappy with what you’ve set, you may return to the default value by presing the (+) and (-) keys simultaneously. Mixing 0% rate 5. Link function setting Turn the Link function ON or OFF with the (+)/(-) keys.
The Flaperon mixing function uses two servos to individually control two ailerons, combining the aileron function with the flap function. For a flap effect, the ailerons can be raised and lowered simultaneously. Of course, aileron function, where the two controls move in different directions, is also CH6 CH1 performed. The up and down travel of the left and right ailerons can be adjusted independently, so you can also get a differential effect. Left and right flap travel can be adjusted individually.
The Flap Trim function is used to specify the amount of flap travel (or camber, if on a sailplane setup). If flaperon (FLPRON) mixing is active, FLAPTRM is automatically turned on. You should match the travel of both flaps before using this function to set the total amount of flap throw. The amount depends on the model, but for sailplanes a small amount (less than 10%) is preferred, since too much camber produces excessive drag.
The ABRAKE function simultaneously drops the flaps and moves the elevator, and may be used to make steep descents or limit airspeed in dives. Airbrakes can be activated in a proportional manner (LIN, for linear) by moving the throttle stick, or you may choose to move all the controls to the defined positions by flipping switch C. (You can disable the airbrake mixing with Switch C during LIN mixing.
→ Elevator-to-flap mixing makes the flaps drop or rise whenever the elevator stick is moved. It is most commonly used to make tighter “pylon” turns or squarer corners in maneuvers. In most cases, the flaps droop (are lowered) when up elevator is commanded. Setting Elevator-to-Flap Mixing Turn the ELE-FL function ON or OFF by pressing the (+) key ("ON" or "OFF"displayed ). Turn off (INH) the function with the (-) key.
The Elevon function should be used with delta wings, flying wings, and other tailless aircraft whose layouts combine the aileron and elevator functions, and requires one servo for each elevon. The aileron and elevator response of each servo can be adjusted independently. Connect the right aileron to receiver CH1/AIL and the left aileron to CH2/ELE. CH1 NOTE: The elevon, flaperon, aileron differential, and ailevator functions cannot be activated simultaneously. The function activated last has priority.
Setting up dual elevator servos 1. Turn the ALVATR function ON by pressing the (+) key ("ON" displayed). Turn off (INH) the function with the (-) key. 2. CH2 tail servo aileron travel To SNP function These keys are used to move through the five submenus in the ALVATR function. adjustment (AIL3): enter the desired value with the (+)/(-) keys. 3. CH8 tail servo aileron travel adjustment (AIL4): adjust and set the value as before. 4.
The Throttle Delay function is used to delay the response of the throttle servo to simulate the slow response of a turbojet engine to throttle control. A 40% delay setting corresponds to about a one second delay, while a 100% delay takes about eight seconds to respond. Setting Throttle delays These keys are used to move through the Turn the TH-DLY function ON by pressing the (+) two submenus in the TH-DLY function. key ("ON"displayed ). Turn off (INH) the function To TH-NDL function with the (-) key.
The pages in the glider section describe the additional special mixing functions that only are available when the two glider (GLID1FLP, GLID2FLP) model types are selected. The GLID1FLP menu is intended for sailplanes with one or two aileron servos, and a single flap servo (or two connected with a y-connector), while the -2FLP configuration is for dual flap servos that can act oppositely as ailerons.
The Advanced Menus for the GLID1FLP and GLID2FLP are shown below. The Basic Menu for both of these model types is similar to that shown for helicopter (HELI) on p. 20, with the helicopter functions removed.
GLID-2FLP SETUP INSTRUCTIONS (TWO AILERON & TWO FLAP SERVOS) 1. Before you begin, be sure that all of your aileron and flap servos are plugged into the proper receiver channels. This example assumes that you are using model memory #3. CH1 — Right aileron CH2 CH7 CH2 — Elevator (or first half of v-tail) CH6 CH3 — (not used) CH4 CH4 — Rudder (or second half of v-tail) CH5 CH5 — Right Flap CH1 CH6 — Left Flap CH7 — Left Aileron 2. Enter the BASIC SETUP mode by pressing the two BASIC buttons simultaneously.
(this may be changed later for more travel). For cruising, you'll want no droop at all, but for slowspeed thermalling, you may want to droop the trailing edge a bit. Use the flap trim setting to get the desired amount of camber. No more that about 1/8" (3 mm) is all that is needed for most models.
CH 1 (right) aileron: Right aileron down travel Right aileron up travel CH 7 (left) aileron: Hit the (>) CURSOR key once and input the throw for the flaps. Move the throttle stick and be sure the flaps DROP with butterfly. If they don’t, change the sign (this again may depend on servo orientation). You want as much flap motion as possible — 90° is great if you can get it. Like the ailerons, you set both flap offsets at the same time. Left aileron up travel Left aileron down travel 12.
OFF ON ON or OFF indicates Start-Speed switch position. coupling. When everything is set properly, the fuselage will be tangent to the thermal turn circle. Switch G 14. You may also set up the speed mode presets (SPEED, p. 90) for high-speed cruise between thermals. Reflex (raise) the entire trailing edge no more than 1/16" (1.5 mm), or you'll gain more drag than penetration ability. Use no more than 5 or 10% for initial setup. ON or OFF indicates Start-Speed switch position.
SAILPLANE TRIMMING CHART ©1995 by Don Edberg (all rights reserved) To test for _ Test Procedure 1. Model Control Neutrals Fly the model straight and level 2. Control Throws Note: be sure all aileron & flap horn pairs have matching angles 3. Decalage & Center of Gravity (Note: this is an iterative procedure, depends on desired handling characteristics. Aft CG = less stability but better performance) 4.
BFLY — Butterfly Mixing (“Crow”) The Butterfly mixing function – sometimes called “crow” – is used for glide path control for landing or for limiting speed when in a dive. Butterfly mixing is controlled with the throttle stick and raises the ailerons and lowers the flaps (two aileron servos are required, using CH1 and CH7, and the same setting applies to both, so horns must be identical). Butterfly will work with either one or two flap servos. All of the servos move linearly with throttle stick motion.
→ → Flap→aileron mixing is used to change the camber (the angle of the ailerons and flaps) over the entire wing, which produces less drag than just dropping the flaps by themselves. When you have Elevator→Flap mixing activated along with Flap→Aileron mixing, the entire trailing edge droops or reflexes with elevator stick motion. You can program an offset of the flaps as described in step 3 below, but we suggest leaving this at zero initially.
→ → Aileron-to-flap mixing is used to improve the roll rate and to reduce the wing’s induced drag during rolls and banking maneuvers by operating the flaps differentially as ailerons. The function may be turned on and off by switch "G", or it may be always on. For normal flying, a value of about 50% is often used. But for slope racing or F3B models in speed runs, you may wish to use a larger value approaching 100%.
The Start function is used to offset the aileron, elevator, and flap servos to the position that provides maximum lift during launch. Normally the ailerons and flaps are drooped about 20-30°, with the flaps drooped slightly more to prevent tip-stalling on tow. The elevator neutral can also be offset in order to trim out any pitch changes caused by the flap and aileron presets. This function is activated by flipping switch G to the aft position.
The Speed function is used to offset the aileron, elevator, and flap servos to the position that provides maximum drag for cruise and high-speed flight. Normally the ailerons and flaps are raised about 35°. Some airfoils, notably the RG-15, actually have higher drag with reflex, so Speed function should not be used with this section and other similar ones. The elevator neutral can also be offset in order to trim out any pitch changes caused by the trailing edge reflex.
The setting data for 8 models can be saved in the T8UHPS transmitter itself and the setting data for 8 more models can be saved in the DP-16K CAMPac (Option) removable memory module. CAMPac initialization To use the CAMPac with the T8UHPS, the CAMPac must be initialized when the power is turned on for the first time. After the message "INIT? EXT-MEM" appears on the screen when the power is turned on, press the "+" key. This automatically initializes the storage area for 8 models.
The abbreviations used with the 8UH are defined below alphabetically. Related pages are given in parenthesis following the definition ().
→ -93- →
94
95
96
97
Before you decide to have your system repaired, if there is no apparent physical damage, read this instruction manual again and check to be sure that you are operating the system as it is supposed to be operated. If you are still having trouble, pack up your system in its original shipping materials and send it to your nearest authorized Futaba R/C Service Center.
