[Stijn D.C.]

I have see by using the sander , that the needle of Main reservoir make moves, brakes are full released...

scenario is, sanding by wheelslip and sometimes it give a leak of 1 BAR :-(

Have other persons this too? (i have it on different computers)


Greetz,

[Coolhand101]

 Stijn D.C., on 20 July 2017 - 02:26 PM, said:

I have see by using the sander , that the needle of Main reservoir make moves, brakes are full released...

scenario is, sanding by wheelslip and sometimes it give a leak of 1 BAR :-(

Have other persons this too? (i have it on different computers)


Greetz,

Yes, this is because the token 'TrainBrakesControllerFullServicePressureDrop( x ) is probably set at zero. Set it to a default setting and the above will not occur.


Thanks

[Stijn D.C.]

Hello,

By me it is config like this:

comment(-------- Compresseur principal --------)

AirBrakesAirCompressorPowerRating ( 2.5 )
AirBrakesAirCompressorWattage ( 11000 )
AirBrakesAirUsedPerPoundsOfBrakePipePressure ( 1.2 )
AirBrakesCompressorRestartPressure ( 108 )
AirBrakesHasLowPressureTest ( 0 )
AirBrakesIsCompressorElectricOrMechanical ( "Electric" )
AirBrakesMainMaxAirPressure ( 129.6 )
AirBrakesMainMinResAirPressure ( 0 )
AirBrakesMainResVolume ( 56 )
AirBrakeMaxMainResPipePressure ( 115 )

comment(-------- Frein de locomotive --------)

EngineBrakesControllerMinPressureReduction ( 4.5 )
EngineBrakesControllerMaxPressureReduction ( 4.5 )
EngineBrakesControllerMaxApplicationRate ( 15 )
EngineBrakesControllerMaxReleaseRate ( 30 )
EngineBrakesControllerMaxQuickReleaseRate ( 35 )
EngineBrakesControllerMinSystemPressure ( 0 )
EngineBrakesControllerMaxSystemPressure ( 84 )
EngineBrakesControllerMaxPressureDropInNormalApplication( 72 )
EngineBrakesControllerFullServicePressureDrop ( 72 )
EngineBrakesControllerDirectControlExponent ( 1 )
EngineBrakesControllerHasProportionalBrake ( 0 )

comment(-------- Frein de train --------)

TrainBrakesControllerMinPressureReduction ( 4.5 )
TrainBrakesControllerMaxPressureReduction ( 4.5 )
TrainBrakesControllerMaxApplicationRate ( 15 )
TrainBrakesControllerMaxReleaseRate ( 30 )
TrainBrakesControllerMaxQuickReleaseRate ( 35 )
TrainBrakesControllerEmergencyApplicationRate ( 15 )
TrainBrakesControllerMinSystemPressure ( 0 )
TrainBrakesControllerMaxSystemPressure ( 72 )
TrainBrakesControllerMaxPressureDropInNormalApplication ( 72 )
TrainBrakesControllerEmergencyBrakeTimePenalty ( 0 )
TrainBrakesControllerFullServicePressureDrop ( 72 )
TrainBrakesControllerDirectControlExponent ( 1 )


On normal train this locomotive give 72PSI/5BAR in brakecylinders, by using enginebrake this locomotive give 84PSI/6BAR in brakecylinders.

The value that you said "zero" is 72 in this case, with same problem.

Greetz,

[Coolhand101]

It is not that parameter as i thought!

Okay, are you using two engines in a consist when the above happens?

Normally if engine 1 has say 'AirBrakesMainMaxAirPressure( 129.6 ) and engine 2 has 'AirBrakesMainMaxAirPressure( 109.6 ). You can get these results.

AirBrakeMaxMainResPipePressure ( 115 ) and TrainBrakesControllerMaxPressureDropInNormalApplication ( 72 )
- do these tokens work in OR ?

TrainBrakesControllerFullServicePressureDrop( 72 ) - this should be between 20 and 26!

Using one of my default engines, i can confirm that the sander does take air from the main res. However it is a really small amount and is only noticable on a very high time compression. In the real world, this is indeed correct, as well as the train horn and wipers.

Thanks

[Stijn D.C.]

Hello,

Indeed there are 2 Engines in the consist, becauze it is a TGV.

TGV's in France have locomotives on both sides.

But on 2 locomotives on normal train i have it too.

[Coolhand101]

 Stijn D.C., on 22 July 2017 - 04:38 AM, said:

Hello,

Indeed there are 2 Engines in the consist, becauze it is a TGV.

TGV's in France have locomotives on both sides.

But on 2 locomotives on normal train i have it too.

Yes i have two locos on some consist. If the 'AirBrakesMainMaxAirPressure' is not the same on both engines, this will cause the sander to drop MR pressure as you describe. If both engines have the same pressure, then this should not happen. It it does, it must be another brake token affecting this.

I just tried this with six locos in a consist with the same brake parameters, the sander did not cause the MR to drop quickly.

The reason i had the 'AirBrakesMainMaxAirPressure' set at a lower value on other engines in a consist, is to allow the compressor to kick in, to a recharge the MR at game start( for diesels ) or when i close the circuit breaker on electric locos.



Thanks

[Stijn D.C.]

Hello,


Ok, but not every locomotive or train have same values for that commandline.

We can solve this with give every loc that drive in UM with each... same value, or not sand and play with tractionmanipulator.

That is the easy way offcourse, if this is a bug of ORTS, i must know in case send bugrapport.


My engineering on TGV locomotives have same values for moment in case brakesystem.

And indeed on this or trains with 1 locomotive i have this not.


Thanks for give that information Coolhand ;-)

[Coolhand101]

 Stijn D.C., on 22 July 2017 - 09:46 AM, said:

Hello,


Ok, but not every locomotive or train have same values for that commandline.

We can solve this with give every loc that drive in UM with each... same value, or not sand and play with tractionmanipulator.

That is the easy way offcourse, if this is a bug of ORTS, i must know in case send bugrapport.


My engineering on TGV locomotives have same values for moment in case brakesystem.

And indeed on this or trains with 1 locomotive i have this not.


Thanks for give that information Coolhand ;-)

In real life, the AirBrakesMainMaxAirPressure' must be for every engine in that consist. It is the maximum pressure of the main reservoir tank. You cannot have different max pressures for the main res in that consist for the same type of locomotive.

However if you attach to a different type of locomotive, it may have a different max MR pressure and the sander problem could occur!

In the UK, on older trains, it was 100PSI(7 bar) or 140PSI ( 10 bar ).

Thanks

[Stijn D.C.]

If i set AirBrakesMainMaxAirPressure ( 129.6 ) on 3 differtent locomotives there is no problem.


But is in real it no, if you couple a locomotive to other locomotives, that the locomotive where driver is on it, the "master" make dessiction

for that?


Becauze every locomotive (same type/class...) is not same (unique) you can have marge, but normal is that a marge of max. 0,5 BAR


I gonna ask on some traindrivers how this is be in real.

[Coolhand101]

 Stijn D.C., on 27 July 2017 - 05:48 AM, said:

If i set AirBrakesMainMaxAirPressure ( 129.6 ) on 3 differtent locomotives there is no problem.


But is in real it no, if you couple a locomotive to other locomotives, that the locomotive where driver is on it, the "master" make dessiction

for that?


Becauze every locomotive (same type/class...) is not same (unique) you can have marge, but normal is that a marge of max. 0,5 BAR


I gonna ask on some traindrivers how this is be in real.

I think i see what you are getting at when you say same class. Are you saying that the first loco has 129.6PSI and when you couple to the second loco it may only have 80PSI for the main res because that engine was either shut down or the compressors were not started?