nightowl56 Posted October 18, 2022 Share Posted October 18, 2022 I have a few prop / turbo prop aircraft that idle way to high. (They start rolling when idling). I know that I need to change something in the config file but could someone tell me which value I need to change? This is what currently is there for the engines and props. [GeneralEngineData] engine_type = 5 Engine.0 = 3.484, -13.573, 3.570 Engine.1 = 3.484, 13.573, 3.570 fuel_flow_scalar = 0.650 min_throttle_limit = -0.250000 max_contrail_temperature = -39.0 [propeller] thrust_scalar = 1.0 propeller_type = 0 propeller_diameter = 11.981 propeller_blades = 4 propeller_moi = 320.000 beta_max = 45.000 beta_min = 11.500 min_gov_rpm = 27974.000 prop_tc = 0.004 gear_reduction_ratio = 24.700 fixed_pitch_beta = 0.000 low_speed_theory_limit = 80.000 prop_sync_available = 1 prop_deice_available = 1 prop_feathering_available = 1 prop_auto_feathering_available = 1 min_rpm_for_feather = 350.000 beta_feather = 79.3 power_absorbed_cf = 0.900 defeathering_accumulators_available = 0 prop_reverse_available = 1 minimum_on_ground_beta = 0.000 minimum_reverse_beta = -20.000 [TurbineEngineData] fuel_flow_gain = 0.008 inlet_area = 1.200 rated_N2_rpm = 28950.000 static_thrust = 450.000 afterburner_available = 0 [turboprop_engine] power_scalar = 1.000 maximum_torque = 11240.000 max_rpm_mechanical_efficiency_scalar = 1.000 idle_rpm_mechanical_efficiency_scalar = 1.000 max_rpm_friction_scalar = 1.000 idle_rpm_friction_scalar = 1.000 Link to comment Share on other sites More sharing options...
mallcott Posted October 18, 2022 Share Posted October 18, 2022 I have a few prop / turbo prop aircraft that idle way to high. (They start rolling when idling). I know that I need to change something in the config file but could someone tell me which value I need to change? This is what currently is there for the engines and props. [GeneralEngineData] engine_type = 5 Engine.0 = 3.484, -13.573, 3.570 Engine.1 = 3.484, 13.573, 3.570 fuel_flow_scalar = 0.650 min_throttle_limit = -0.250000 max_contrail_temperature = -39.0 [propeller] thrust_scalar = 1.0 propeller_type = 0 propeller_diameter = 11.981 propeller_blades = 4 propeller_moi = 320.000 beta_max = 45.000 beta_min = 11.500 min_gov_rpm = 27974.000 prop_tc = 0.004 gear_reduction_ratio = 24.700 fixed_pitch_beta = 0.000 low_speed_theory_limit = 80.000 prop_sync_available = 1 prop_deice_available = 1 prop_feathering_available = 1 prop_auto_feathering_available = 1 min_rpm_for_feather = 350.000 beta_feather = 79.3 power_absorbed_cf = 0.900 defeathering_accumulators_available = 0 prop_reverse_available = 1 minimum_on_ground_beta = 0.000 minimum_reverse_beta = -20.000 [TurbineEngineData] fuel_flow_gain = 0.008 inlet_area = 1.200 rated_N2_rpm = 28950.000 static_thrust = 450.000 afterburner_available = 0 [turboprop_engine] power_scalar = 1.000 maximum_torque = 11240.000 max_rpm_mechanical_efficiency_scalar = 1.000 idle_rpm_mechanical_efficiency_scalar = 1.000 max_rpm_friction_scalar = 1.000 idle_rpm_friction_scalar = 1.000 Use standard settings first. Then report back. You have several incorrect settings in the .cfg file... Link to comment Share on other sites More sharing options...
nightowl56 Posted October 20, 2022 Author Share Posted October 20, 2022 Thank you for the reply. Yes I know. These are the setting that came with the aircraft (freeware downloads) I have no idea what the standard setting would be. Link to comment Share on other sites More sharing options...
ianhr Posted October 20, 2022 Share Posted October 20, 2022 I would try reducing propeller beta_min. I'll be interested to know what happens. :) [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
mallcott Posted October 20, 2022 Share Posted October 20, 2022 I would try reducing propeller beta_min. I'll be interested to know what happens. :) There are a number of errors in THAT .cfg. Relying on the one fix is erroneous... Get rid of the junk first, then lets have another look. I cannot even tell what aircraft is simulated? Beechcraft? Link to comment Share on other sites More sharing options...
nightowl56 Posted October 20, 2022 Author Share Posted October 20, 2022 started at 11.5. Changed this by -1. until I reached 2.5 which was the first setting to make a difference. So as of now it has cut the idle. Thanks for the idea. Link to comment Share on other sites More sharing options...
ianhr Posted October 21, 2022 Share Posted October 21, 2022 Glad to hear it, and good to know. Let's hope there are no negative side-effects! [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
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