Steam Simulation Tweaks (Not compatible with new update)

Not compatible with the new update!

This mod is for build 98 only. It is NOT compatible with build 99 (because DV mostly fixed everything in the update lol). If I find things in B99 want to tweak, I might re-release it.

This mod attempts to make the steam locomotives more realistic, by changing three things:

• []the throttle calculations,

  []the superheater on the S282,

• and the way water enters the boiler on the S282.

  I've done a lot of research for this but I've never run steam locomotives in real life. If you have real-life experience with steam locomotives, and you think I've made a mistake, please let me know.

  Throttle calculations

  In vanilla Derail Valley, the throttle on the steam locomotive regulates the pressure in the cylinders. But in real life, the throttle limits the rate of steam flow into the cylinders. This means that even a small throttle setting can take the cylinders to the full boiler pressure; it'll just take slightly longer to get to full pressure. If you charge the cylinders to 14 bar, then close the throttle, the cylinders will stay at 14 bar until you use that steam. Engineers will regulate the pressure in the cylinders by opening and closing the throttle quickly, before the cylinders can charge to full pressure.

  This mod changes the behavior of the throttle, so that it correctly limits the rate of steam flow into the cylinders. This means that at low speeds, especially in the rain, you might get wheelslip even at the lowest throttle setting. To combat this, quickly open and close the throttle (either by using scroll wheel while highlighting the throttle, or by using the T and G keys while in the locomotive). The steam chest pressure gauge helps a lot: if it shows that you're getting wheelslip at 9 bar, you can try only charging the cylinders to 7 bar.

  Note that it's now very hard to start the S282 when on a hill and in the rain, even while hauling nothing - as it should be.

  Note that the locomotives have different steam chest sizes: the S060 has a dome throttle in the steam dome, and the S282 has a front end throttle in the smokebox (throttle linkage is inside the boiler). So the S060 actually has a larger steam chest than the S282, even though the S282 is superheated (the superheater is before the throttle, so it doesn't effect throttle response).

  TLDR: the throttles on both the S060 and the S282 are gonna feel weird and annoying. Watch the cylinder pressure gauge; you might need to open the throttle in short bursts when starting to avoid wheelslip.

  If the throttle feels weird in VR, let me know; I don't have a headset so I can't test it.

  Feedwater heater

  The S060 and S282 simulate different methods of adding water into the boiler: the S060 us