jalsina wrote:Hello David,
There has been a thread going on lately in Steam of name "Out of Water". Basically it is related with the issues of locomotives giving a random "ran out of water" and ending the scenario. Most of these errors have happened with double header trains.
However, I have been running a workshop scenario called "Conserving Diesel" by Jack. It is a nicely designed scenario with diesel trains except for the player´s train which is an intermodal consist of 60 cars pulled by a Challenger with the mission to go uphill to the Cajon Summit and finally to Hesperia:
http://steamcommunity.com/sharedfiles/filedetails/?id=474081883&searchtext=Conserving+diesel
In everyone of the runs i have tried, I got the error "ran out of water". The author and some others have reported the same in most of their tries.
Yesterday I replaced the Challenger by a Big Boy and made it to the end of the scenario with no problem of water at all.![]()
This makes me think that the design of the Challenger boiler is flawed in some way, that triggers a problem with the steam core part of the game. All problems happened in the 3% grade. Mike Rennie suggested the crown exposed and other possibilities that are mentioned there. The issue of the Challenger is totally different of that of a double header steam loco.
I wonder if you are aware of some problem that could be fixed with a mod.![]()
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See that I am using your physics mod, but others that tried were not using it.
mrennie wrote:Something else I discovered was that if you overfill the boiler, it also gives the "Game Over Ran out of Water" - same message for completely the opposite case. I said in the thread on Steam, the core code physics for double-headers is borked, just like steam+diesel and several parts of the single-steam. I did a double-header and managed to get a value of "1.$" in the F5 HUD - obviously a stack overflow somewhere in the core code that made it go bonkers.

jalsina wrote:mrennie wrote:Something else I discovered was that if you overfill the boiler, it also gives the "Game Over Ran out of Water" - same message for completely the opposite case. I said in the thread on Steam, the core code physics for double-headers is borked, just like steam+diesel and several parts of the single-steam. I did a double-header and managed to get a value of "1.$" in the F5 HUD - obviously a stack overflow somewhere in the core code that made it go bonkers.
As you may have seen in my latest screenshots, today I registered 3 different pressure measurements both in the K4+K4 and the Connie+K4 double headers.![]()
However coming back to the Challenger, this is a different case because it has only been ran as only one loco.
As David has messed with physics of that loco, I thought that may be he detected something that could help fixing that giant locomotive.
dtrainBNSF1 wrote: Boiler length represents how the boiler behaves when climbing a gradient. This is one thing I appreciate about old MSTS - they got the general idea of the water level appearing to change as you went up or down hill and you could seriously overfill the boiler when coming down or when climbing up if you weren't careful you'd be just few miles up the grade and because of where the water was sloshing it could register a "Ran out of water" message and end your run.
dtrainBNSF1 wrote:
Now about double-heading:
I don't normally take multiple steam locos over a piece of line unless I know it would have been standard practice (like sending 3 Cab Forwards on a single train near the end of steam on Donner Pass). And even then I try not to mix steam types. The reason for that is because 1) I want to get a feel for what the loco is doing on its own & 2) When double heading steam locos the HUDs for whatever reason read the boiler pressure of the loco in the rear-most position, so if the loco behind you happens to have a higher boiler pressure than you you're going to end up with a highly unrealistic operating boiler pressure in your loco. If you've got a smaller engine with a lower boiler pressure pushing behind you just for a hill (like a Fowler 4F banking a 9F on the Somerset & Dorset route out of Radstock) you're never going to reach full pressure and be able to use that pressure.
If I do end up mixing steam locos (like the Fowler example) I put my driver icon on the rear loco instead of the lead for that reason.
dtrainBNSF1 wrote:Yeah I've run into that problem. I think there's a couple of things wrong with it, but my prime suspect would be the boiler length line. Boiler length represents how the boiler behaves when climbing a gradient. This is one thing I appreciate about old MSTS - they got the general idea of the water level appearing to change as you went up or down hill and you could seriously overfill the boiler when coming down or when climbing up if you weren't careful you'd be just few miles up the grade and because of where the water was sloshing it could register a "Ran out of water" message and end your run. I suspect something similar is happening on the Challenger, just on a more inappropriately extreme level, because all the places where this has happened has been on heavy grades. Recent runs with further refinements on the Challenger (which I have not released yet) have so far been error free. Part of that is because I don't let the water in my boiler get very low at all when climbing Sherman Hill so the game can't give me that particular message.
dtrainBNSF1 wrote:Now about double-heading:
........

dtrainBNSF1 wrote:Dovetail is releasing an update to the Big Boy fixing many issues from my second Big Boy update, making update #2 for the Big Boy unnecessary. Check it out here: http://www.engine-driver.com/article/sh ... boy-update
I'll check out how everything works out with the new update, and see if anything needs to addressed.
I hereby request that once Dovetail releases this update that all of my Big Boy mods be removed from the library as they will be seriously outdated in light of this update. Any necessary physics mods will be uploaded to the library post-DTG update.
The reason is that DTG has made a remake of all aliasing changing folder names like for example "Rail Vehicles" by "RailVehicles". Besides there are more sounds available.
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