WaistGunner Posted November 29, 2022 Share Posted November 29, 2022 Afternoon fellow simmers! I have a strange set of circumstances that perhaps one of you has come across before and know the answer that may help me fix this issue. The aircraft is a 747-800 file: SSP748V4_GENX_N6067E that I downloaded here. The problem is when starting the engines, 1&2 engines start and the nose of the aircraft yaws to the right. When 3&4 engines start, that aircraft stops yawing to the right and stabilizes. I've look at the .air file and cfg files. There doesn't seem to be any anomalies in either file. airfile: 747-400-RR-RB-211-524HT.air and typical posky cfg file. If anyone can help me solve this, I would appreciate it! Frank Savage Brigadier General Frank Savage 918th Bomb Group "Hard Luck Group" Link to comment Share on other sites More sharing options...
mrzippy Posted November 29, 2022 Share Posted November 29, 2022 Is this the only 747 that does this yaw when starting the engines? Still thinking about a new flightsim only computer! Link to comment Share on other sites More sharing options...
lnuss Posted November 29, 2022 Share Posted November 29, 2022 Are all throttles at idle? Larry N. As Skylab would say: Remember: Aviation is NOT an exact Science! Link to comment Share on other sites More sharing options...
WaistGunner Posted November 29, 2022 Author Share Posted November 29, 2022 Yes to both questions Brigadier General Frank Savage 918th Bomb Group "Hard Luck Group" Link to comment Share on other sites More sharing options...
mrzippy Posted November 29, 2022 Share Posted November 29, 2022 Parking brake set? Are you able or have you tried starting 3 and 4 before 1 and 2? Still thinking about a new flightsim only computer! Link to comment Share on other sites More sharing options...
WaistGunner Posted November 30, 2022 Author Share Posted November 30, 2022 Yes Parking brakes set. Interesting enough, when you start using 3&4 first, the nose yaws to the left and stabilizes when 1&2 start. Is this crazy or what? Brigadier General Frank Savage 918th Bomb Group "Hard Luck Group" Link to comment Share on other sites More sharing options...
lnuss Posted November 30, 2022 Share Posted November 30, 2022 It sure sounds like excess thrust -- try starting 1, 4, 3, 2. Larry N. As Skylab would say: Remember: Aviation is NOT an exact Science! Link to comment Share on other sites More sharing options...
WaistGunner Posted November 30, 2022 Author Share Posted November 30, 2022 same results, only worse! So here is the cfg file: [fltsim.0] title=Boeing 747-800 Boeing Sunrize Livery sim=747-400-RR-RB-211-524HT model= panel= sound= texture=n6067e kb_checklists=boeing747_check kb_reference=boeing747_ref atc_airline=Boeing atc_flight_number=008 atc_parking_types=GATE, RAMP atc_parking_codes=BOE ui_typerole=Commercial Airliner ui_manufacturer=AAC ui_type=11 Boeing 747-800 ui_variation=Boeing First Flight Livery visual_damage=1 atc_heavy=1 atc_id= description=Project Opensky - 747-400BCF\nVersion 2006.9.7-FSX\n\nEngine Type GE CF6-80C2B1\n\n747-400 Commercial Version \n\nModel Designer\n Hiroshi Igami\n\nFlight Dynamics Designers\n Warren C. Daniel\n Brandon D. Henry\n\nMaster Texture Designer\n Corey Ford\n\nTest Pilots\n Project Opensky Members\n\nMaximun Range: 4100 nm\n\nFor proper operation: See B747 manual at: \n http://www.project-opensky.com [fltsim.1] title=Boeing 747-800 Air Force One sim=747-400-RR-RB-211-524HT model= panel= sound= texture=AF1 kb_checklists=boeing747_check kb_reference=boeing747_ref atc_airline=Boeing atc_flight_number=008 atc_parking_types=GATE, RAMP atc_parking_codes=BOE ui_typerole=Commercial Airliner ui_manufacturer=AAC ui_type=11 Boeing 747-800 ui_variation=Air Force One visual_damage=1 atc_heavy=1 atc_id= description=Project Opensky - 747-400BCF\nVersion 2006.9.7-FSX\n\nEngine Type GE CF6-80C2B1\n\n747-400 Commercial Version \n\nModel Designer\n Hiroshi Igami\n\nFlight Dynamics Designers\n Warren C. Daniel\n Brandon D. Henry\n\nMaster Texture Designer\n Corey Ford\n\nTest Pilots\n Project Opensky Members\n\nMaximun Range: 4100 nm\n\nFor proper operation: See B747 manual at: \n http://www.project-opensky.com [fltsim.2] title=Boeing 747-800 BBJ sim=747-400-RR-RB-211-524HT model= panel= sound= texture=bbj kb_checklists=boeing747_check kb_reference=boeing747_ref atc_airline=Boeing atc_flight_number=008 atc_parking_types=GATE, RAMP atc_parking_codes=BOE ui_typerole=Commercial Airliner ui_manufacturer=AAC ui_type=11 Boeing 747-800 ui_variation=Boeing Business Jet visual_damage=1 atc_heavy=1 atc_id= description=Project Opensky - 747-400BCF\nVersion 2006.9.7-FSX\n\nEngine Type GE CF6-80C2B1\n\n747-400 Commercial Version \n\nModel Designer\n Hiroshi Igami\n\nFlight Dynamics Designers\n Warren C. Daniel\n Brandon D. Henry\n\nMaster Texture Designer\n Corey Ford\n\nTest Pilots\n Project Opensky Members\n\nMaximun Range: 4100 nm\n\nFor proper operation: See B747 manual at: \n http://www.project-opensky.com [fltsim.3] title=Boeing 747-800 Blue & White Roll Out sim=747-400-RR-RB-211-524HT model= panel= sound= texture=BW kb_checklists=boeing747_check kb_reference=boeing747_ref atc_airline=Boeing atc_flight_number=008 atc_parking_types=GATE, RAMP atc_parking_codes=BOE ui_typerole=Commercial Airliner ui_manufacturer=AAC ui_type=11 Boeing 747-800 ui_variation=Boeing Blue & White Roll Out visual_damage=1 atc_heavy=1 atc_id= description=Project Opensky - 747-400BCF\nVersion 2006.9.7-FSX\n\nEngine Type GE CF6-80C2B1\n\n747-400 Commercial Version \n\nModel Designer\n Hiroshi Igami\n\nFlight Dynamics Designers\n Warren C. Daniel\n Brandon D. Henry\n\nMaster Texture Designer\n Corey Ford\n\nTest Pilots\n Project Opensky Members\n\nMaximun Range: 4100 nm\n\nFor proper operation: See B747 manual at: \n http://www.project-opensky.com [fltsim.4] title=Boeing 747-800 Presidential Support sim=747-400-RR-RB-211-524HT model=PS panel= sound= texture=AABNCP kb_checklists=boeing747_check kb_reference=boeing747_ref atc_airline=Boeing atc_flight_number=008 atc_parking_types=GATE, RAMP atc_parking_codes=BOE ui_typerole=Commercial Airliner ui_manufacturer=AAC ui_type=11 Boeing 747-800 ui_variation=Presidential Support visual_damage=1 atc_heavy=1 atc_id= description=Project Opensky - 747-400BCF\nVersion 2006.9.7-FSX\n\nEngine Type GE CF6-80C2B1\n\n747-400 Commercial Version \n\nModel Designer\n Hiroshi Igami\n\nFlight Dynamics Designers\n Warren C. Daniel\n Brandon D. Henry\n\nMaster Texture Designer\n Corey Ford\n\nTest Pilots\n Project Opensky Members\n\nMaximun Range: 4100 nm\n\nFor proper operation: See B747 manual at: \n http://www.project-opensky.com [General] performance=See boeing.com atc_type=BOEING atc_model=B747 editable=0 [pitot_static] vertical_speed_time_constant=10 //Increasing this value will cause a more instantaneous reaction in the VSI [WEIGHT_AND_BALANCE] empty_weight= 394660.000 max_gross_weight= 877000.000 reference_datum_position = 97.0, 0, 0 empty_weight_CG_position = -97.0, 0, 0 max_number_of_stations = 8 // New FS2004 Numbers // Max Structural Payload Per Boeing - 148,716 lbs // Max Structural Payload Opensky - 148,716 lbs // Actual Total PAX - 72,800 lbs station_load.0 = "5600, -20.0, 0.0, 0.0, 1st Class Main Dk (21 pax)" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) station_load.1 = "5950, -70.0, 0.0, 0.0, Bus Class Main Dk (35 pax)" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) station_load.2 = "7350, -50.0, 0.0, 20.00, Bus Class Upper Dk (42 pax)" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) station_load.3 = "53900, -107.0, 0.0, 0.0, Econ Class Main Dk (322 pax)" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) // Total Opensky Cargo - 33,500 lbs station_load.4 = "15750, -40.0, 0.0, 0.0, Lwr Dk Cgo Fwd" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) station_load.5 = "15750, -150.0, 0.0, 0.0, Lwr Dk Cgo Aft" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) station_load.6 = "2000, -170.0, 0.0, 0.0, Lwr Dk Cgo Bulk" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) // Moments of Inertia empty_weight_roll_MOI= 37018662.500 empty_weight_pitch_MOI= 46713121.500 empty_weight_yaw_MOI= 26310700.000 empty_weight_coupled_MOI= 0.000 [fuel] Center1 = -97.000, 0.0, -4.0, 17153.0, 3.0 //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons) Center2 = -290.500, 0.0, 6.0, 1775.0, 3.0 //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons) LeftMain = -102.000, -35.0, -4.0, 12538.0, 3.0 //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons) LeftAux = -108.500, -52.0, -3.0, 5761.0, 3.0 //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons) RightMain = -102.000, 35.0, -4.0, 12538.0, 3.0 //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons) RightAux = -108.500, 52.0, -3.0, 5761.0, 3.0 //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons) fuel_type = 2 //Fuel type: 1 = Avgas, 2 = JetA number_of_tank_selectors = 1 electric_pump=1 [airplane_geometry] wing_area= 5650.000 wing_span= 211.000 wing_root_chord= 23.000 wing_dihedral= 6.998 wing_incidence= 2.000 wing_twist= -0.994 oswald_efficiency_factor= 0.830 wing_winglets_flag= 1 wing_sweep= 37.500 wing_pos_apex_lon= -55.100 wing_pos_apex_vert= 0.000 htail_area= 1470.000 htail_span= 72.750 htail_pos_lon= -213.000 htail_pos_vert= 10.000 htail_incidence= 0.000 htail_sweep= 37.500 vtail_area= 1060.000 vtail_span= 37.121 vtail_sweep= 45.000 vtail_pos_lon= -200.500 vtail_pos_vert= 20.083 elevator_area= 326.800 aileron_area= 650.000 rudder_area= 229.900 elevator_up_limit= 24.000 elevator_down_limit= 18.000 aileron_up_limit= 20.000 aileron_down_limit= 20.000 rudder_limit= 30.000 elevator_trim_limit= 24.000 spoiler_limit= 45.000 spoilerons_available= 1.0 aileron_to_spoileron_gain= 0.0 min_ailerons_for_spoilerons= 0.0 min_flaps_for_spoilerons= 0.0 [Reference Speeds] flaps_up_stall_speed = 150.0 //Knots True (KTAS) full_flaps_stall_speed = 126.0 //Knots True (KTAS) cruise_speed = 475.0 //Knots True (KTAS) max_indicated_speed=500.000000 max_mach=0.920000 [flaps.0] type = 1 // 1 - tail, 2 - lead span-outboard = 0.8 // 0.0 .. 1.0 extending-time = 25 // seconds flaps-position.0 = 0 // degrees flaps-position.1 = 5 // degrees flaps-position.2 = 10 // degrees flaps-position.3 = 15 // degrees flaps-position.4 = 25 // degrees flaps-position.5 = 35 // degrees flaps-position.6 = 45 // degrees damaging-speed = 200 // KIAS blowout-speed = 250 // KIAS lift_scalar = 0.28 drag_scalar = 0.40 pitch_scalar= 0.45 system_type = 1 //Hydraulic [flaps.1] type = 1 // 1 - tail, 2 - lead span-outboard = 0.2 // 0.0 .. 1.0 extending-time = 25 // seconds flaps-position.0 = 0 // degrees flaps-position.1 = 5 // degrees flaps-position.2 = 10 // degrees flaps-position.3 = 15 // degrees flaps-position.4 = 25 // degrees flaps-position.5 = 35 // degrees flaps-position.6 = 45 // degrees damaging-speed = 200 // KIAS blowout-speed = 250 // KIAS lift_scalar = 0.28 drag_scalar = 0.40 pitch_scalar= 0.45 system_type = 1 //Hydraulic [flaps.2] type = 2 // 1 - tail, 2 - lead span-outboard = 0.8 // 0.0 .. 1.0 extending-time = 12 // seconds flaps-position.0 = 0 // degrees flaps-position.1 = 5.0 // degrees flaps-position.2 = 10.0 // degrees flaps-position.3 = 15.0 // degrees flaps-position.4 = 20.0 // degrees flaps-position.5 = 25.0 // degrees flaps-position.6 = 25.0 // degrees damaging-speed = 250 // KIAS blowout-speed = 300 // KIAS lift_scalar = 0.28 drag_scalar = 0.40 pitch_scalar= 0.45 system_type = 1 //Hydraulic [flaps.3] type = 2 // 1 - tail, 2 - lead span-outboard = 0.5 // 0.0 .. 1.0 extending-time = 12 // seconds flaps-position.0 = 0 // degrees flaps-position.1 = 5.0 // degrees flaps-position.2 = 10.0 // degrees flaps-position.3 = 15.0 // degrees flaps-position.4 = 20.0 // degrees flaps-position.5 = 25.0 // degrees flaps-position.6 = 25.0 // degrees damaging-speed = 250 // KIAS blowout-speed = 300 // KIAS lift_scalar = 0.28 drag_scalar = 0.40 pitch_scalar= 0.45 system_type = 1 //Hydraulic [flight_tuning] cruise_lift_scalar = 2.2 //1.8 parasite_drag_scalar = 1.0 induced_drag_scalar = 1.0 elevator_effectiveness = 1.0 aileron_effectiveness = 1.5 rudder_effectiveness = 1.5 pitch_stability = 2.0 roll_stability = 2.0 yaw_stability = 2.0 elevator_trim_effectiveness = 1.0 aileron_trim_effectiveness = 0.00 rudder_trim_effectiveness = 0.00 [GeneralEngineData] engine_type= 1 Engine.0= -107.600, -69.500, 0.000 Engine.1= -78.110, -39.167, -7.000 Engine.2= -78.110, 39.167, -7.000 Engine.3= -107.600, 69.500, 0.000 fuel_flow_scalar= 0.9676 min_throttle_limit=-0.319946 [TurbineEngineData] bypass_ratio=5.800000 fuel_flow_gain= 0.001 inlet_area= 55.00 //40.58 rated_N2_rpm= 29992.000 static_thrust= 57000.000 ////59350.000 afterburner_available= 0 reverser_available= 1 [jet_engine] thrust_scalar = 1.0 [autopilot] autopilot_available=1 flight_director_available=1 default_vertical_speed=1800.000000 autothrottle_available=1 autothrottle_arming_required=1 autothrottle_takeoff_ga=1 autothrottle_max_rpm=105.000000 pitch_takeoff_ga=8.000000 use_no_default_pitch = 1 // 0 = Default to current pitch mode, 1 = No default pitch mode. use_no_default_bank = 1 // 0 = Default to Wing Leveler mode, 1 = No default bank mode. default_pitch_mode=0 default_bank_mode=0 max_pitch=10.000000 max_pitch_acceleration=1.000000 max_pitch_velocity_lo_alt=2.000000 max_pitch_velocity_hi_alt=0.300000 max_pitch_velocity_lo_alt_breakpoint= 7000.000000 max_pitch_velocity_hi_alt_breakpoint=24000.000000 max_bank=20.000000 max_bank_acceleration=1.800000 max_bank_velocity=3.000000 max_throttle_rate=0.03000 nav_proportional_control=9.000000 nav_integrator_control=0.250000 nav_derivative_control=0.000000 nav_integrator_boundary=2.500000 nav_derivative_boundary=0.000000 gs_proportional_control=9.520000 gs_integrator_control=0.260000 gs_derivative_control=0.000000 gs_integrator_boundary=0.700000 gs_derivative_boundary=0.000000 yaw_damper_gain=1.000000 [contact_points] //0 Class //1 Longitudinal Position (feet) //2 Lateral Position (feet) //3 Vertical Position (feet) //4 Impact Damage Threshold (Feet Per Minute) //5 Brake Map (0=None, 1=Left, 2=Right) //6 Wheel Radius (feet) //7 Steer Angle (degrees) //8 Static Compression (feet) (0 if rigid) //9 Max/Static Compression Ratio //10 Damping Ratio (0=Undamped, 1=Critically Damped) //11 Extension Time (seconds) //12 Retraction Time (seconds) //13 Sound Type //14 Airspeed limit for retraction (KIAS) //15 Airspeed that gear gets damage at (KIAS) point.0 = 1.000, -2.333, 0.000, -14.33, 5181.102, 0.000, 2.042, 90.000, 0.660, 0.650, 0.880, 11.000, 11.000, 0.000, 240.000, 280.000 // Nose Gear point.1 = 1.000, -110.583, -6.350, -15.403, 3574.803, 1.000, 1.917, 0.000, 1.620, 1.150, 0.841, 12.900, 14.900, 2.000, 240.000, 280.000 // Main Center Gear - Left point.2 = 1.000, -110.583, 6.350, -15.403, 3574.803, 2.000, 1.917, 0.000, 1.620, 1.150, 0.841, 13.100, 15.400, 3.000, 240.000, 280.000 // Main Center Gear - Right point.3 = 1.000, -102.083, -18.000, -15.403, 3574.803, 1.000, 1.917, 0.000, 1.620, 1.150, 0.841, 12.900, 14.900, 2.000, 240.000, 280.000 // Main Wing Gear - Left point.4 = 1.000, -102.083, 18.000, -15.403, 3574.803, 2.000, 1.917, 0.000, 1.620, 1.150, 0.841, 13.100, 15.400, 3.000, 240.000, 280.000 // Main Wing Gear - Right point.5 = 2.000, -146.000, -102.900, 7.000, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 5.000, 0.000, 0.000 point.6 = 2.000, -146.000, 102.900, 7.000, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 6.000, 0.000, 0.000 point.7 = 2.000, -189.667, 0.000, -2.000, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 9.000, 0.000, 0.000 point.8 = 2.000, -9.167, 0.000, -5.750, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 4.000, 0.000, 0.000 point.9 = 2.000, -229.667, 0.000, 55.500, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 8.000, 0.000, 0.000 point.10= 2.000, -106.400, -69.500, -5.000, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 9.000, 0.000, 0.000 point.11= 2.000, -76.300, -39.167, -9.000, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 9.000, 0.000, 0.000 point.12= 2.000, -76.300, 39.167, -9.000, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 9.000, 0.000, 0.000 point.13= 2.000, -106.400, 69.500, -5.000, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 9.000, 0.000, 0.000 point.14= 2.000, 0.000, 0.000, 0.000, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 4.000, 0.000, 0.000 static_pitch= -2.0000 //1.500 static_cg_height= 14.500 gear_system_type=0 [TailHook] // For opening cargo door. tailhook_length=1 ;(feet) tailhook_position = 0.0, 0.0, 0.0 ;(feet) longitudinal, lateral, vertical positions from datum [folding_wings] // For opening main deck cargo door. wing_fold_system_type = 4 ;0=None fold_rates = 0.05,0.05 ;Percent per second cable_force_adjust = 1.0 [Views] eyepoint=-14.000, -2.000, 14.800 // Longitude, Latitude and Vertical position from Reference Point, (FEET) [electrical] // ;BusType, MaxAmpLoad, MinVoltage BusTypes:0=MainBus,1=AvionicsBus,2=BatteryBus,3=HotBatteryBus,4-7=Generator/AlternatorBus(1-4) flap_motor = 1, 0 , 1.0 gear_motor = 0, 5 , 17.0 avionics_bus = 0, 0 , 1.0 avionics = 1, 5 , 17.0 pitot_heat = 0, 0 , 1.0 additional_system = 0, 0 , 1.0 marker_beacon = 1, 2 , 17.0 gear_warning = 7, 0 , 99.0 gear_motor = 4, 0 , 1.0 fuel_pump = 0, 0 , 1.0 fuel_transfer_pump = 0, 0 , 1.0 starter1 = 0, 20, 17.0 starter2 = 0, 0 , 1.0 light_nav = 0, 0 , 1.0 light_beacon = 0, 0 , 1.0 light_landing = 0, 0 , 1.0 light_taxi = 0, 0 , 1.0 light_strobe = 0, 0 , 1.0 light_panel = 0, 7 , 99.0 light_recognition = 0, 0 , 1.0 light_wing = 0, 0 , 1.0 marker_beacon = 0, 0 , 1.0 standby_vacuum = 0, 0 , 1.0 auto_brakes = 0, 0 , 1.0 hydraulic_pump = 0, 0 , 1.0 propeller_device = 0, 0 , 1.0 [Radios] // Radio Type = availiable, standby frequency, has glide slope Audio.1 = 1 Com.1 = 1, 1 Com.2 = 1, 1 Nav.1 = 1, 1, 1 Nav.2 = 1, 1, 0 Adf.1 = 1 Transponder.1 = 1 Marker.1 = 1 [direction_indicators] //1 Type: 0=None, 1=Vacuum Gyro, 2=Electric Gyro, 3=Electro-Mag Slaved Compass, 4=Slaved to another //2 Indicator number of slaving indicator if Type = 4 direction_indicator.0=3,0 [exits] number_of_exits = 4 exit.0 = 0.10, -54.00, -9.0, 0.0, 0 //Main Pax Door, L1 Door, Main level - Reserved for Cargo models exit.1 = 0.12, -54.00, 7.0, -7.0, 1 //Fwd Lower Right Cargo Door exit.2 = 0.10, -72.00, -9.0, 0.0, 0 //Main Pax Door, L2 Door, Main level exit.3 = 0.12, -167.00, 7.0, 7.0 1 //Lower Air Stair - Reserved for VC-25A [EFFECTS] wake=fx_wake water=fx_spray dirt=fx_tchdrt concrete=Opensky_sparks, 1 touchdown=fx_tchdwn, 1 [sMOKESYSTEM] //Aileron tip vortecies smoke.0=0, -127.167, -86.167, Opensky_vortex smoke.1=0, -127.167, 86.167, Opensky_vortex //Wing condensation smoke.2=0, -105.917, -39.167, Opensky_conden smoke.3=0, -105.917, 39.167, Opensky_conden [LIGHTS] //Types: 1=beacon, 2=strobe, 3=navigation, 4=cockpit, 5=landing 6=taxi, 7=recognition, 8=wing, 9=logo //light.0 = 3, -153.47, -110.96, 9.03, fx_shockwave_navred.fx , //light.1 = 3, -153.47, 110.96, 9.03, fx_shockwave_navgre.fx , //light.2 = 2, -224.700, 0.000, 11.000, fx_shockwave_strobe , //light.3 = 3, -13.850, 0.000, 14.850, fx_vclighth , //light.4 = 9, -208.500, -4.500, 43.750, Opensky_wing_light , // //light.5 = 9, -208.500, 4.500, 43.750, Opensky_wing_light , // light.6 = 1, -35.100, 0.600, 19.100, fx_beacon_AS.fx , light.7 = 1, -83.500, 0.600, -7.080, fx_beacon_AS.fx, //light.8 = 2, -153.47, -110.96, 9.03, fx_shockwave_strobe , //light.9 = 2, -153.47, 110.96, 9.03, fx_shockwave_strobe , [vacuum_system] max_pressure=5.150000 vacuum_type=2 electric_backup_pressure=0.000000 engine_map=0,0,0,0 [pneumatic_system] max_pressure=18.000000 bleed_air_scalar=1.000000 structural_deice_type=0 [deice_system] structural_deice_type=1 //0 = None, 1 = Heated Leading Edge, 2 = Bleed Air Boots, 3 = Eng Pump Boots [brakes] parking_brake = 1 // Parking brake available toe_brakes_scale = 0.6 //Brake scalar [stall_warning] type=2 stick_shaker=1 [gear_warning_system] gear_warning_available=0 pct_throttle_limit=0.099976 flap_limit_power=25.496622 flap_limit_idle=5.042029 [hydraulic_system] electric_pumps=0 engine_map=1,1,1,1 normal_pressure=3000.000000 [attitude_indicators] attitude_indicator.0=1 [turn_indicators] turn_indicator.0=1,0 Brigadier General Frank Savage 918th Bomb Group "Hard Luck Group" Link to comment Share on other sites More sharing options...
beroun Posted November 30, 2022 Share Posted November 30, 2022 (edited) Try to load front more and/or increase overall weight. Check CG if not too far back. Also your [flight_tuning] cruise_lift_scalar = 2.2 seems too high, try to lower it. If the nose comes up too fast during take-off rotation, these could be the issues. Maybe you can also lower the static_thrust in [TurbineEngineData] Good luck Edited November 30, 2022 by beroun Peter Bendl ex. British Airways Link to comment Share on other sites More sharing options...
lnuss Posted November 30, 2022 Share Posted November 30, 2022 rated_N2_rpm= 29992.000 seems rather fast- almost 30,000 RPM? Larry N. As Skylab would say: Remember: Aviation is NOT an exact Science! Link to comment Share on other sites More sharing options...
tiger1962 Posted November 30, 2022 Share Posted November 30, 2022 29992 is the FS default rated rpm for all jets - jet engines idle at around 16-17,000 rpm. The brake scalar seems low at 60% - toe_brakes_scale = 0.6 Try increasing this to 80% - toe_brakes_scale = 0.8 Tim Wright "The older I get, the better I was..." Xbox Series X, Asus Prime H510M-K, Intel Core i5-11400F 4.40GHz, 16Gb DDR4 3200, 2TB WD Black NVME SSD, 1TB Samsung SATA SSD NVidia RTX3060 Ti 8Gb, Logitech Flight Yoke System, CH Pro Pedals, Acer K272HL 27", Windows 11 Home x64 Link to comment Share on other sites More sharing options...
WaistGunner Posted November 30, 2022 Author Share Posted November 30, 2022 Well Gentlemen, I added some weight to the aircraft, moved to CG forward by moving the fuel forward just a little. Then I had to adjust the static height and cg height just a hair. Reduced thrust by a small amount and increased the brake scale to 0.85. I also decreased N2 just a small amount and Eureka! the nose is now stationary on startup. Listen, I appreciate everyone's help. You made a huge difference to me! Thanks! Frank Brigadier General Frank Savage 918th Bomb Group "Hard Luck Group" Link to comment Share on other sites More sharing options...
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