[Genma Saotome]

A bit more. Here is a downloadable .pdf of the 1917 edition of the Engineman's Manual, from which I learned the stuff I posted above.

And an edit to the above post, the retarded release did include retarding the venting of air from the brake cylinder. Unfortunately it does not say by how much.

[Kazareh]

I need to chime in on this, that despite the implementation of the correction of questionable braking parameters button, it does absolutely nothing at this point and many of my trains even 8 cars, take over a minute to fully release their brakes, leaving me to have to initialize them each time I release. Is there going to be a fix for this, or has the ORTS team given up?

[Genma Saotome]

Kazareh, on 22 February 2016 - 10:00 PM, said:

I need to chime in on this, that despite the implementation of the correction of questionable braking parameters button, it does absolutely nothing at this point and many of my trains even 8 cars, take over a minute to fully release their brakes, leaving me to have to initialize them each time I release. Is there going to be a fix for this, or has the ORTS team given up?

Which problem? All brakes releasing slowly over all time or just the last few (for me) PSI in each car? For the first problem, correct your release rate in your .wags; for the second something needs to change in OR because even a fast release rate doesn't fix that problem.

[gpz]

@Kazareh, is auxiliary reservoir capacity and pressure of your locomotive set to a real world value?

[Kazareh]

gpz, on 22 February 2016 - 11:14 PM, said:

@Kazareh, is auxiliary reservoir capacity and pressure of your locomotive set to a real world value?

Brake field reads as such:


AirBrakesAirCompressorPowerRating( 3.1 )
AirBrakesMainMinResAirPressure( 14.7 )
AirBrakesMainMaxAirPressure( 140 )
AirBrakesMainResVolume( 170 )
AirBrakesAirCompressorWattage( 12.6kw )
AirBrakesCompressorRestartPressure( 134 )
AirBrakesAirUsedPerPoundsOfBrakePipePressure( 1.44 )
AirBrakesIsCompressorElectricOrMechanical( 0 )

[copperpen]

What about the cars in the train. I use EmergencyResCapacity( "1.5ft^3" ) in all of my wag files and can have a fully released consist of 100 cars in under 3 minutes without initialising. A short passenger train releases almost as fast as the brake handle is moved.

[Kazareh]

Amfleets:
EmergencyBrakeResMaxPressure( 140 )
TripleValveRatio( 2.5 )
EmergencyResVolumeMultiplier ( 1.461 )
EmergencyResCapacity( 8.3 )
EmergencyBrakeTriggerRate( 16 )
MaxReleaseRate( 45 )
MaxApplicationRate( 9.0 )
MaxAuxilaryChargingRate( 1.5 )
EmergencyResChargingRate( 6.6 )
BrakeCylinderPressureForMaxBrakeBrakeForce( 78 )

BrakeDistributorFullServicePressure( 78 )
BrakeDistributorEmergencyApplicationPressure( 93 )
BrakeDistributorMaxAuxilaryResPressure( 110 )
BrakeDistributorEmergencyResPressure( 110 )
BrakeDistributorReleaseRate( 4.42 )
BrakeDistributorApplicationRate( 4.56 )
BrakeDistributorTrainPipeControlRatio( 2.5 )
BrakeDistributorNormalFullReleasePressure( 110 )


Heritage Diner:

EmergencyBrakeResMaxPressure ( 90 )
TripleValveRatio ( 2.5 )
MaxReleaseRate ( 2.1 )
MaxApplicationRate ( 0.9 )
MaxAuxilaryChargingRate ( 1.684 )
EmergencyResCapacity ( 2.604 )
EmergencyResChargingRate ( 1.684 )
BrakeCylinderPressureForMaxBrakeBrakeForce ( 50 )


Viewliner Sleepers:

TripleValveRatio( 2.5 )
MaxReleaseRate( 9.0 )
MaxApplicationRate( 9.0 )
MaxAuxilaryChargingRate( 9.0 )
EmergencyResCapacity( 8 )
EmergencyResChargingRate( 9.0 )
BrakeCylinderPressureForMaxBrakeBrakeForce( 50 )

Baggage Car:

EmergencyBrakeResMaxPressure( 90 )
TripleValveRatio( 2.5 )
MaxReleaseRate( 45 )
MaxApplicationRate( 0.9 )
MaxAuxilaryChargingRate( 1.684 )
EmergencyResCapacity( 2.604 )
EmergencyResChargingRate( 1.684 )
BrakeCylinderPressureForMaxBrakeBrakeForce( 50 )

[Genma Saotome]

On your diner you have MaxReleaseRate ( 2.1 ). That's very likely waay to slow. I'm using (20) which seems to match US practice in the late steam era. For your sleepers it's (9.0). That too may be slow.

But let me back up a bit; Your question said brake release was taking too long but Copperpen is asking about recharging the air reservoirs which is a completely different part of the brake system. Which problem are you having: is the time to empty the brake cylinder too long or is it recharging the brake line (and reservoirs)?

[Kazareh]

Genma Saotome, on 23 February 2016 - 06:08 PM, said:

On your diner you have MaxReleaseRate ( 2.1 ). That's very likely waay to slow. I'm using (20) which seems to match US practice in the late steam era. For your sleepers it's (9.0). That too may be slow.

But let me back up a bit; Your question said brake release was taking too long but Copperpen is asking about recharging the air reservoirs which is a completely different part of the brake system. Which problem are you having: is the time to empty the brake cylinder too long or is it recharging the brake line (and reservoirs)?

The time it takes for me to move the brake lever to the release state, and the pressure to drop from wherever it is to 0PSI in the Brake Cylinder.

[Genma Saotome]

If I may, another plug for the wonderful utility of include files: This is a typical .wag file converted to use include files -- all of the lines inside of Wagon():

Wagon ( TM_UTLX_55210_mt
	WagonShape ( UTLX_6K_55210.s )
	Include ( "UTLX_Type_V_Mesh_Dimensions.inc" )
	Include ( "..\\Common_Fleet_Stds\\US\\Std_Type_Coupler_Generic_Draft_Gear.inc" )
	Include ( "UTLX_Type_V_Mty_Weight.inc" )

	Adheasion ( 0.2 0.4 2 0 )

	Include ( "..\\Common_Fleet_Stds\\US\\Single_Pipe_KC_Brakes.inc" )

	Sound ( "GenFreightWag1.sms" )
	Name ( "TM 40' UTLX 55210 MT" )
)

Please note the pathing on the first two include files: The first include is something very specific to this car so the file doesn't specify a path as it is located in the same folder as all of the other data for that car. The second one has a path because it is describing data suitable for all US cars and so the start of its path is "...\trainsets\Common_Fleet_Stds" to signify its very broad use, followed by "\US" to signify it is applicable to that country.

The contents of the include file for braking (the last Include() in the .wag file) looks like this:

	Comment ( "Single_Pipe_KC_Brakes.inc" )

	BrakeEquipmentType ( "Handbrake, Triple_valve, Auxilary_reservoir" )
	BrakeSystemType ( "Air_single_pipe" )

	NumberOfHandbrakeLeverSteps( 100 )

	TripleValveRatio( 2.5 )
	MaxReleaseRate( 20 )
	MaxApplicationRate( 0.9 )
	MaxAuxilaryChargingRate( 1.684 )
	EmergencyResCapacity( 2.604 )
	EmergencyResChargingRate( 1.684 )
	EmergencyBrakeResMaxPressure( 90 )
	BrakeCylinderPressureForMaxBrakeBrakeForce( 50 )

This is for a KC Brake, common in the first half of the 20th century. Other than removing the codes for an emergency reservoir (as there wasn't one) the data values are all the same as what I have for its replacement, the AB Brake. As I learn more about the differences of the two I'll probably change some values in one or the other files. When I do make a change it is immediately available to all .wags that use this file.

The important part is this include file is used by as many .wag files as I have converted which ensures the same equipment will perform the same way on all those cars.