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FUTABA 8US, Instruction Manual

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FUTABA 8US Instruction Manual Download Page 22

 

 

19 

 

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 ............................................ 22 

 

Helicopter Trimming Chart .......................................... 24 

 
 

TH-CRV* .... Throttle curve (Normal) ......................... 26 

 

PI-CRV* ...... Pitch curve (Normal).............................. 27 

 

REVOLU* ... Revolution mixing (Normal).................. 28 

 

ATV ............. Adjustable Travel Volume ..................... 29 

 D/R............... Dual 

Rates .............................................. 29 

 EXP.............. Exponential 

throw .................................. 30 

 F/S................ Fail 

Safe ................................................. 32 

 REVERS ...... Servo 

Reverse ........................................ 33 

 PARA........... Parameter ............................................... 33 
 DATARSET Data 

Reset .............................................. 34 

 ATL ............. ATL 

trim ................................................ 34 

 EG/S............. Engine 

Starter......................................... 34 

 TYPE ........... Model 

Type ............................................ 35 

 

MOD ............ Modulation (FM/PPM or PCM)............. 36 

 SWASH ....... Swash 

AFR ............................................ 37 

 INVERT....... Inverted .................................................. 38 
 TRIM ........... Trim........................................................ 39 
 RSET ........... Trim 

Reset.............................................. 39 

 STEP ............ Trim 

Steps .............................................. 39 

 

DISP............. Trim reverse display .............................. 40 

 SUBTRM..... Subtrim................................................... 40 
 TRAINR ...... Trainer.................................................... 41 
 TH-CUT....... Throttle 

Cut ............................................ 42 

 MODEL ....... Model ..................................................... 43 
 SEL .............. Model 

Select .......................................... 43 

 COPY........... Data 

Copy .............................................. 43 

 NAME ......... Model 

Name........................................... 44 

 TIMER......... Timer...................................................... 45 
 
 

 

Summary of Contents for 8US

Page 1: ...Futaba 8US Instruction Manual 8 Channel Radio Control System...

Page 2: ...ect to change without notice 1 This product may be used for model airplane or surface use if on the correct frequency The product described in this manual is subject to regulations of the Ministry of...

Page 3: ...n of America s involvement in this program is part of its commitment to protecting our environment and conserving natural resources NOTE Our instruction manuals need to encourage our customers to retu...

Page 4: ...their vicinity If you must fly away from a club field be sure there are no other modelers flying within a two mile range or you may lose control of your aircraft On the flying field Before flying be...

Page 5: ...t over If it is knocked over the throttle stick may be accidentally moved causing the engine to race Before taxiing be sure to extend the transmitter antenna to its full length A collapsed antenna wil...

Page 6: ...3...

Page 7: ...ns Diagram 21 Helicopter Setup Example 22 24 Helicopter Trimming Chart 24 Helicopter Basic Functions 26 45 TH CRV Throttle curve Normal 26 PI CRV Pitch curve Normal 27 REVOLU Revolution mixing Normal...

Page 8: ...ns 72 FLAPTRM Flap trim 73 AI DIF Aileron Differential more up than down 73 ABRAKE Airbrake settings 74 ELEoFL ElevatoroFlap mixing 75 V TAIL V tail mixing 75 ELEVON Elevon mixing tailless models 76 A...

Page 9: ...lly to suit your own preferences For those learning to fly the transmitter has buddy box capability and the training channels can be selected by the instructor The trainer cord is sold separately Stan...

Page 10: ...n 5 0 kg cm Operating speed 0 22 sec 60 Size 1 59 x 0 79 x 1 40 40 4 x 19 8 x 36 mm Weight 1 7 oz 48 2 g Servo S3001 Standard ball bearing Control system Pulse width control 1 52 ms neutral Power requ...

Page 11: ...lever Rudder trim lever Large LCD panel Power switch Up position ON Hook for optional neckstrap Edit keys Aileron trim lever Elevator trim lever Elevator Aileron stick Switch E Idle up switch Switch F...

Page 12: ...nus In general functions for a Mode 1 transmitter reverse the E and G switches Switch Knob HELI ACRO GLID Switch A Elevator Dual Rate p PMIX 1 2 on Elevator Dual Rate Elevator Dual Rate p Butterfly on...

Page 13: ...even if the battery is fully charged You can cycle your batteries with a commercial cycling unit or by leaving the system on and exercising the servos by moving the transmitter sticks Cycling should b...

Page 14: ...d with the spring tensions you may close the transmitter Check that the upper printed circuit board is on its locating pins then very carefully reinstall the rear cover being careful thread the RF mod...

Page 15: ...ro sold separately Multiple entries indicate that the servo function varies with the selected programming FLPRON mode AI DIF mode Outputs with no mixing functions are shown first The diagram below sho...

Page 16: ...screw holes and a rectangular hole slightly larger than the full stroke of the switch Choose a switch location on the opposite side of the fuselage from the engine exhaust pipe and pick a location so...

Page 17: ...mitting 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 Now you can snap the number...

Page 18: ...shown Current model memory lower second digit Model 01 shown Elevator trim display Throttle trim display Timer On Off Indicator see P 34 to set timer The timer appears if one of the cursor keys is pre...

Page 19: ...t function Warning sound Beep beep beep beeping does not stop until transmitter is turned off The LOW BATTERY warning is displayed when the transmitter battery voltage drops below 8 5V LAND YOUR MODEL...

Page 20: ...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 sou...

Page 21: ...18...

Page 22: ...4 TH CRV Throttle curve Normal 26 PI CRV Pitch curve Normal 27 REVOLU Revolution mixing Normal 28 ATV Adjustable Travel Volume 29 D R Dual Rates 29 EXP Exponential throw 30 F S Fail Safe 32 REVERS Ser...

Page 23: ...Modulation type Model select Model copy Model name Model name Model Submenu Trim Reset Stepping speed Stepping speed Stepping speed Stepping speed Trim display Trim Submenu To enter the Basic Menu pr...

Page 24: ...urve Idle up 1 Pitch Curve Normal Pitch Curve Idle up 1 Pitch Curve Idle up 2 Pitch Curve Hold Pitch Curve Inverted Revolution Normal Revolution Idle up 1 Revolution Idle up 2 Inverted Cross Throttle...

Page 25: ...er a flight use the Throttle Cut function to kill your engine with the trainer switch There is no need to fumble with trim and the idle trim position will never be lost Enter the TH CUT settings in th...

Page 26: ...robatics ON at Switch G forward position x Throttle Hold HOLD for autorotation ON at Switch E forward position We recommend that you fly the model and adjust trims and control responses to your liking...

Page 27: ...Setting 0 25 50 65 100 Blade pitch 4 4 5 12 19 RudderoThrottle Mix Setting RudderoThrottle mixing is useful for hovering eight nose in circle Top Hat Pirouette and other aerobatics It is normally set...

Page 28: ...This procedure assumes helicopter is trimmed for hovering Trimming must be done in near calm conditions Repeat tests several times before making adjustments If any changes are made go back over the p...

Page 29: ...urve Name Display NORM Data input keys These keys are used to move through the five submenus in the TH CRV function 1 Turn the TH CRV function ON by pressing the key ON displayed Turn off INH the func...

Page 30: ...splay NORM Data input keys These keys are used to move between the five points in the PI CRV function 1 Turn the PI CRV function ON by pressing the key ON displayed Turn off INH the function with the...

Page 31: ...ing rate is too small Note that the nose direction may not become stable when taking off if the helicopter is not steady before takeoff or if the rotor speed does not rise 2 Throttle high side setting...

Page 32: ...Throttle Rudder Gyro Pitch CH7 CH8 To D R function To REVOLU function Left up servo throw Right down servo throw Range 30 140 Initial value 100 The blinking item is what is being set Channel display N...

Page 33: ...STK x menu hold the stick at the position you wish to switch dual rates Next store the position by pressing the and keys simultaneously This will change the stick position blinking numbers Check that...

Page 34: ...es This is best understood by experimenting with a servo t Setting Exponential Values Channel display To F S function To D R function Range 100 to 100 Initial value 0 Data input keys These keys are us...

Page 35: ...tle stick to idle at which time you ll have about 30 seconds of throttle control before the battery function reactivates Setting the Failsafe Function Channel display NORM or Failsafe position NORM sh...

Page 36: ...ndicates travel setting 1 Aileron setting Select NORM or REV with the keys 2 Repeat above procedure to reverse channels 2 8 as necessary 2 Elevator 3 Throttle 4 Rudder 5 Gyro 6 Pitch 7 CH7 8 CH8 Indic...

Page 37: ...double setting double push system is used If the key is pressed to halt resetting after the confirmation message is displayed the display returns to its original screen and no changes are made The ATL...

Page 38: ...rvos tilt the swashplate left and right With Pitch inputs the aileron and pitch servos raise the swashplate up and down HELI SWH4 Type If the servo inputs are located as shown use SWH4 Mixing Aileron...

Page 39: ...e confirmation message is displayed press the key This will returns you to the original screen NOTE If the power switch is turned off while a TYPE change is underway the data may not be reset Data inp...

Page 40: ...es To INVERT function To PARA function Current function rate Data input keys These keys are used to move through items 1 3 in this menu 1 Aileron adjustment Set the rate with the keys 2 Elevator excep...

Page 41: ...ch angles to allow autorotation Hook up the linkage to the servo Since the normal flight pitch curve uses NORM IDL1 IDL2 and HOLD set up your helicopter for trimmed flight in hover forward flight and...

Page 42: ...nd the trim step rate are not reset by this command Resetting trims To SUBTRM function To INVERT function If any trim is not centered the RSET flashes To Reset Trim press the and keys simultaneously W...

Page 43: ...rim values of as small as possible Otherwise when the subtrims are large values the servo s range of travel is restricted The recommended procedure is as follows zero out both the trims TRIM RSET menu...

Page 44: ...ed by the student The set channel is controlled according to the contents set at the student s transmitter Examples When the stick channel is set to the FUNC mode helicopter stick operation practice i...

Page 45: ...set to be just large enough in the direction low throttle to fully close the carburetor If you prefer you may select another switch and ON OFF direction For safety always activate the TH CUT function...

Page 46: ...To TIMER function To TH CUT function Confirmation message OK MODEL CHANGE Select the model with the and keys When you have the right number press the and keys simultaneously The confirmation message...

Page 47: ...ss confusing since you can easily tell your model memories apart The name of the model that you assign is displayed at the top left corner of the startup screen The name can be up to six characters lo...

Page 48: ...MODEL function Timer s minute setting Data input keys These keys are used to move around in the TIMER menu Timer Minutes Setting Set the minute display with the keys Timer Seconds Setting Press the r...

Page 49: ...rottle Curve 47 TH HLD Throttle Hold 49 OFST 1 2 iv Offset 1 2 iv 50 DELAY Delay 50 PMIX 1 2 Programmable Mixing 51 52 HOV TH Hovering Throttle 53 HOV PI Hovering Pitch 53 GYRO Gyro Mixing 54 GOVrpm G...

Page 50: ...to produce the basic throttle curve for flight near hover It is used along with the normal pitch curve PI CRV NORM so that the helicopter flies with constant rotor RPM The normal throttle curve funct...

Page 51: ...keys If you re unhappy with what you ve set you may return to the default value by pressing the and keys simultaneously Curve Point Value Range 0 100 Initial curve settings POS1 0 POS2 25 POS3 50 POS...

Page 52: ...pressing the key ON or OFF displayed depending on SW E position The hovering pitch curve function is also activated Turn off INH the function with the key 2 Enter Hold position Adjust the position wi...

Page 53: ...OFST 1 or TH HLD function Offset amount Range 120 to 120 Initial value 0 Data input keys These keys are used to move through the five submenus in the OFST1 OFST2 functions 2 Aileron offset Input the d...

Page 54: ...1 2 are set to frequently used mixing combinations as follows PMIX 1 AILoELE PMIX 2 ELEoTHR The programming method is given for Mixer 1 the second mixer may be programmed in an identical fashion To P...

Page 55: ...y If you want mixing on at the low throttle side press the key An arrow is displayed above or below the small 3 at the right top corner of the screen to verify proper switching direction When you thin...

Page 56: ...the trim position 0 with the knob and memorize the trim then return the knob to its center position The Hovering Pitch function may be used to trim the rotor pitch near hover without affecting throttl...

Page 57: ...vernor mixing function is used to adjust the GV 1 Governor speed settings rS1 rS2 rS3 from the transmitter Whether speed switching and governor ON OFF are switched using one switch or ON OFF switching...

Page 58: ...speed value with the keys 3 CNTR Enter your desired speed value with the keys 4 DOWN Enter your desired speed value with the keys Switch C UP CNTR DOWN Switch G NORM IDL1 IDL2 Speed setting Range 0 t...

Page 59: ...t to set with the CURSOR keys the curve point is indicated by the arrow below the numbers 1 5 and the current throttle position is above the numbers Enter the desired curve value with the keys If you...

Page 60: ...action generated by changes in the pitch and speed of the main rotor The mixing ratio can be set by a five point curve Three are three kinds of revolution mixing normal NORM idle up 1 IDL1 and idle up...

Page 61: ...the curve point is indicated by the arrow below the numbers 1 5 and the current throttle position is above the numbers Enter the desired curve value with the keys If you re unhappy with what you ve s...

Page 62: ...M pitch curve function produces the basic pitch curve for flight near hover It is set up to provide up and down control at a constant engine speed along with the ormal throttle curve n The HI side pit...

Page 63: ...Value Range 0 100 Initial curve settings POS1 0 POS2 25 POS3 50 POS4 75 POS5 100 The Pitch Curve Normal function is on at startup The blinking item on the setting screen is the current setting item Id...

Page 64: ...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...

Page 65: ...ble Mixer 1 Special Mix menu initial screen Throttle Needle Throttle Delay Snap Roll Ailevator V Tail Elevon Elevator Flap Airbrake settings ACRO Basic Menu ACRO Advanced Menu Reverse Parameter menu B...

Page 66: ...transmission F is for FM PPM transmission and C is for PCM This should be set to match your receiver If you make a change it won t take effect until you cycle the power off and on again 4 Next turn on...

Page 67: ...ition and verify its operation 9 Snap Roll SNP p 77 Advance Menu Activate the Snap Roll function by pressing the plus key Set the deflection rate for each switch position Be sure that the direction of...

Page 68: ...banked turn Method 2 Roll model inverted A1 Nose drops B1 Tail drops A2 Lots of forward stick down elevator required to maintain level flight B2 No forward stick down elevator required to maintain lev...

Page 69: ...er do this test in both left right knife edge flight Method 2 Apply rudder in level flight A Model has no tendency to roll B Model rolls in direction of applied rudder C Model rolls in opposite direct...

Page 70: ...W G DOWN SW G UP The SW C C DN display indicates that both the switch C CENTER and DOWN positions activate the IDL DN function to lower the idling speed The SW G DOWN display indicates that the G swit...

Page 71: ...ue 0 Data input keys These keys are used to move around in the TH CUT menu THROTTLE CUT MOVEMENT SETTING Adjust the amount of throttle motion with the keys If you re unhappy with what you ve set you m...

Page 72: ...er 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 73 ABRAKE Airbrake...

Page 73: ...programmable mixers from the eight switches A H In addition the throttle stick CH3 may be used to urn the programmable mixers ON and OFF t Using the Programmable mixers To PMIX 2 function To TH NDL f...

Page 74: ...from preceding page 7 Offsetting neutral mix point If you want the mix to occur somewhere besides master neutral hold the master channel control in the desired position and store the offset position...

Page 75: ...he Flaperon function Turn the FLPRON function ON by pressing the key ON displayed Turn off INH the function with the key To FLPTRM function To MIX 7 function Amount of aileron travel for left aileron...

Page 76: ...allows you to program the amount of up aileron travel independently from the amount of down travel when you have two servos plugged into the receiver right aileron CH1 AIL and left aileron CH7 NOTE O...

Page 77: ...INH the function with the key Servo travel Range 100 to 100 Initial values AIL FLP 50 Elevator 20 2 Set Aileron travel setting Input the travel you d like with the keys 3 Set Flap travel Input travel...

Page 78: ...r and rudder functions are combined for the two tail surfaces Both elevator and rudder travel can be adjusted independently on each surface Because they share receiver outputs Elevon and V Tail mixing...

Page 79: ...ELE2 Adjust ELE2 with the keys 5 CH2 servo elevator rate adjustment ELE1 Adjust ELE1 with the keys Return to the default value by pressing the and keys simultaneously Elevon being adjusted ELE2 or EL...

Page 80: ...levator rate adjustment ELE1 Return to the default by pressing the and keys simultaneously Servo travel Range 100 to 100 Initial values set to AIL3 50 AIL4 50 ELE2 100 ELE1 100 When you move the contr...

Page 81: ...onnects to receiver CH8 and the CH8 control knob adjusts the high throttle mixture An acceleration function moves the engine mixture control when the throttle is moved This function cannot be used sim...

Page 82: ...Advance Menu functions available in the GLID menus refer to the aircraft ACRO Advance Menu section p 69 to 78 If you wish to have the three position switch controlling Normal Start and Speed on the le...

Page 83: ...ixer 3 Programmable Mixer 4 Programmable Mixer 2 Programmable Mixer 1 Speed presets Start launch presets Elevon V tail Elevator Flap mixing Butterfly crow settings Special Mix menu initial screen Aile...

Page 84: ...s is where are the sailplane specific mixers are located Press either of the keys to get to the aileron differential AI DIF settings menu Activate this mode by pressing the plus key the symbol will be...

Page 85: ...ermalling 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 Note that the mo...

Page 86: ...le on approach in full butterfly command Notice that you set the throw for both ailerons at the same time this is the reason to have identical control arm lengths and neutral positions Hit the CURSOR...

Page 87: ...llowed when trimming a new sailplane The flights for trimming must be made in near calm conditions and should be repeated several times before making adjustments One of the most critical steps is the...

Page 88: ...throttle stick activated B No roll motion C Model rolls to left A Mix in less right more left aileron reflex with throttle motion B No adjustment C Reverse of A 5 Differential Coupl ed Rudder setting...

Page 89: ...some mixers after you perform this operation which applies to all model memories Butterfly mixing programming To ELE FL function GLID1FLP or FLP AI GLID2FLP To AI DIF function Data input keys These ke...

Page 90: ...on Turn off INH the function with the key To AI FLP function To BFLY function Flap neutral position Data input keys These keys are used to move through the four submenus in the FLP AI function 2 Ailer...

Page 91: ...ion with the key To ELE FL function To FLP AI function Flap travel commanded by Right aileron stick Data input keys These keys are used to move through the three submenus in the AIL FL function 2 Flap...

Page 92: ...he Start Launch presets for your model To SPEED function To ELEVON function GLID1FLP or V TAIL GLID2FLP Channel being offset for START 2 Aileron 1 offset Input the desired Aileron 1 offset with the ke...

Page 93: ...E you should purchase the 8UH system Speed presets Inputting the Speed presets for your model To PMIX 1 function To START function Channel being offset for START 2 Aileron 1 offset Input the desired A...

Page 94: ...No you want to copy using the or key 3 Press the and keys simultaneously two times The data is copied to transmitter side model No 8 However when data saved for mixing type H 2 for helicopters using...

Page 95: ...92 92 The abbreviations used with the 8UH are defined below alphabetically Related pages are given in parenthesis following the definition o o o o o o...

Page 96: ...93 o o...

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