Mullan helper on Roberts Bank coal

[geepster775]

A video of the Mullan Helper activity. Started out fine, got to Austin, went into the hole to meet a downhill train, did a save, and when I attempt to restore the act I got a bit of rolling stock lurching as Open Rails tries to restart, and that lurching was significant enough to cause a coupler to snap about 6 cars behind the mid-train power set as the train is in the middle of the hairpin turn. Will try it again to see if it replicates. A lot of run-8 tractive effort involved here and train forces going every which way as Open Rails tries to calculate every car's position and relative stresses during the restore. But I did see some visual jumping of individual cars as the sim restarted.

[Timbit]

geepster775
Great video, thanks for sharing this .
Tim

[TrainSimulations]

Agreed, great video! I've had some coupler breaking experiences when loading from a save as well. Seems to be something with ORTS. It does give you a bit of a start especially going uphill with a heavy train. It reminds me on one feature of ORTS which we haven't solved yet, and don't think we can unless the ORTS code changes. In the real world, your train brakes will release the moment the control valve recognizes a pressure of 1 psi or less above equalization. This is why there are runaway trains in the real world, when they have undesired releases or when the train isn't fully charged. In ORTS, the control valve (aux res) doesn't drop to 0 when in emergency, and it should. This would permit the train to release its brakes without having to wait for the brake pipe to reach 75-77 psi. If this is a function of how we have entered the values in our WAG files, and someone knows the solution, please don't hesitate to let me know, so we can fix that. If it's a function of the ORTS braking system, then I guess I have to keep nudging them until it is fixed

Cheers,
Jason@TrainSimulations