Vacuum brakes for OR

I am trying to put together a document that will hopefully help OR users to create reasonably accurate eng and wag files in the future.

Please see:

https://tsforum.forumotion.net/t1305-vacuum-brakes-request-for-information#16984

Vacuum brakes have arrived.

http://www.elvastower.com/forums/index.php?/topic/31481-vacuum-brakes/

I hope all will agree that significant improvements are now possible compared to MSTS.

Some information about what is possible now (particularly improved brake controllers):

http://www.uktrainsim.com/filelib-info.php?form_fileid=37593

Hi darwins,

This looks to be a much needed improvement to the vacuum brakes. I'll definitely be trying it but at the moment it will have to be restricted to my personal use until such time as rolling stock is made available with these improvements.

Regards,

Stephen

I will be updating my own rolling stock soon.

I hope some other content creators will do the same.

There is also the possibility of making "unofficial patches" for existing content.

I believe that MSTS ignores the ORTSxxxx Lines in a .wag file. But are the modified OR .wag and .eng files compatable with MSTS?

It would help if there was a sample .wag file that I could use as a basis to update my wagons.

Even better would be new content for the TSM Resources folder which is the starting point for all my .wag files.

Hi Ian

There is a clever trick to having your wagons work in both MSTS and ORTS without causing any problems to either.
Leave the MSTS wag files alone. Don't change anything. MSTS will use those.
Create a folder called OpenRails inside your stock folder.
Put the new Open Rails wag files in the OpenRails folder and Open Rails will use those instead of the MSTS ones.

Here is an example OR file for one of your wagons:

SIMISA@@@@@@@@@@JINX0D0t______

Wagon ( exSR_5p_D1375_F_HumpSheet

Comment (******************** General Information **********************
               Included in this section - Type, Shape, Size, Mass, etc
        ***************************************************************)

Type ( Freight )
WagonShape ( exSR_5p_D1375_F.s )
Size ( 2.59m 2.2m 6.1m )
Mass ( 9.65t-uk )
WheelRadius ( 18in )
NumWheels ( 2 )

Comment (************************* Coupler Information ************************
               Included in this section - Type, Spring, Buffer, Velocity, etc
        **********************************************************************)

      Coupling (
Spring (
Stiffness ( 1e4N/m 4.5e6N/m )
Break ( 1200kN 1200kN )
r0 ( 15cm 20cm )))

Comment (******************************* Brakes *********************************************
               Included in this section - Type, Force, Reservoir, Applicatiion, Release. etc
        ************************************************************************************)

   BrakeEquipmentType ( Handbrake, Vacuum_brake, Auxilary_reservoir )
   BrakeSystemType ( Vacuum_single_pipe )
   MaxBrakeForce( 34kN )   Comment (* braked at 70% tare mass, coefficient of friction 0.50 *)
   BrakeCylinderPressureForMaxBrakeBrakeForce ( 21inHg )
   MaxHandbrakeForce( 10kN )
   ORTSNumberBrakeCylinders ( 1 )
   ORTSAuxilaryResCapacity ( 3.24ft^3 )
   Brakepipevolume ( 0.82ft^3 ) Comment (* based on length of wagon plus 16 feet for bends, stands and hoses *)
   MaxReleaseRate ( 5.0 )
   MaxApplicationRate ( 5.0 )

   ORTSBrakeShoeFriction ( 0.0 0.50 8.0 0.288 16.1 0.241 24.1 0.211 32.2 0.187 40.2 0.173 48.3 0.161 56.3 0.150 64.4 0.142 72.2 0.139 80.5 0.134 88.5 0.129 96.6 0.125 104.6 0.123 112.7 0.121)    Comment (* Cast Iron Brakeshoes *)



Comment (**************** Curve Resistance & SuperElevation *****
               Included in this section - Wheelbase, gauge, etc
        ********************************************************)

 CentreOfGravity ( 0m 1.7m 0m )
 ORTSTrackGauge ( 4ft 8.5in )
 ORTSRigidWheelbase (9ft 0in )
 ORTSUnbalancedSuperelevation ( 6in )


Comment (******************************* Friction ****************
               Included in this section - Friction, Bearing Type
        *********************************************************)

ORTSBearingType ( Friction )

 ORTSDavis_A ( 71.3 )
 ORTSDavis_B ( 6.73 )
 ORTSDavis_C ( 0.797 )

 Comment (* From Andrews 1954, Sheeted Open Wagon, Av empty mass 6.32 t_uk, Av mass with class 3 load 9.65 tons, A = 1.66 lb/ton, B = 0.07001 lb/ton/mph C = 0.00371 lb/ton/mph^2 *)

Comment (************************ Lights (If used) ***********************************
               Included in this section - Type, Colour, Location, Size, Control, etc
        *****************************************************************************)

Comment (******************** Freight Animations (If used) *******************
               Included in this section - Freight Animation information, etc
        *********************************************************************)

FreightAnim ( ..\\common.Loads\\17ft6_open\\17ft6_5p_HumpSheet.s 0.0 3.0 0 )

Comment (********************* Passenger View (If used) ******************
               Included in this section - File, Location, Direction, etc
        *****************************************************************)

Comment (********************** Micellaneous Information **********
                     Included in this section - Name, Sounds, etc
         *********************************************************)

  Sound ( "uk-swb-fit-wag01.sms" )
  Name ( "exSR_open_goods_fitted" )
 
Comment  (*****************  End of File ************************) )


Regards

Darwin

Hi Darwin,

Leave the MSTS wag files alone. Don't change anything. MSTS will use those.
Create a folder called OpenRails inside your stock folder.
Put the new Open Rails wag files in the OpenRails folder and Open Rails will use those instead of the MSTS ones.

I've used this basic method for some time now but without adding all the new Open Rails parameters. It also has the advantage of being able to use different settings for the brake gauges etc. by having a separate Open Rails Cabview option and retaining the MSTS one when running in MSTS ( something I rarely do these days.

A useful extra would be if the brake settings etc. could go down a common.brakes route which would save a lot of time setting up each individual item of stock and save space. Any thoughts on this idea?

The latest X4032 of Open Rails has vastly improved the way that steam vacuum brakes work.

Regards,

Stephen

It should now be possible to do common.brakes or common.whatever.you.want for similar rolling stock.
I have not quite got my head around it yet, but this can be done in OR using INCLUDE statements and files.

Have a read of this thread in Elvas Towers.Include File Standards

Hi Darwin,

Thanks for the link - it certainly gives a lot of food for thought.