Trains stalling downhill and then reversing back uphill

Question

Trains stalling downhill and then reversing back uphill

DorniNerd opened this issue 6 years ago · 5 comments

DorniNerd commented 6 years ago

Per the conversation on Discord the following bug is reported:

When travelling in a SW1500 and four hoppers (three empties, one loaded) as the train would go up an incline, the train would speed up. As the train would hit a down incline, the train would stall and then shove the entire consist back UP the hill it was coming down. See the attached video

https://www.dropbox.com/s/btkzid5m09wiyqv/javaw.exe%2007.18.2018%20-%2009.48.06.02.mp4?dl=0

Now, after some testing and zeroing out the block weight setting in the configs... The issue completely resolved itself.

Further testing is being done, this occurs both in 1.2.1 and the last 1.2.1 testing version.

cam72cam · Answer 1 · 2022-12-15T11:58:59.000Z

Fixed on the test builds

DorniNerd · Answer 2 · 2018-07-18T15:42:33.000Z

After more testing, it is very much so a problem. Just not as noticable when rail equipment is "0" kg on cargo... Loaded and unloaded.

Alzurana · Answer 3 · 2018-08-06T14:16:24.000Z

I can confirm this bug. Tested on version 1.3.1 (Will test on 1.3.2 later)

I placed my track segments in one direction and have upwards and downwards slopes in it.
When driving a train (empty) from west to east, the slopes (almost always) behave normally, slowdown on an upwards slope (10 blocks per 1 slope block) speed gain going down.

It's much worse when driving the fully loaded from east to west. Every up slope speeds up the train insanely, every down slope slows it down, lets it roll backwards with no brakes applied. This makes it very hard to control very lengthy trains.

Is there a sign reversed somewhere in the code that causes this, maybe?

seeker2921 · Answer 4 · 2018-11-11T23:05:07.000Z

I can confirm this bug. Tested on version 1.3.1 (Will test on 1.3.2 later)

I placed my track segments in one direction and have upwards and downwards slopes in it.
When driving a train (empty) from west to east, the slopes (almost always) behave normally, slowdown on an upwards slope (10 blocks per 1 slope block) speed gain going down.

It's much worse when driving the fully loaded from east to west. Every up slope speeds up the train insanely, every down slope slows it down, lets it roll backwards with no brakes applied. This makes it very hard to control very lengthy trains.

Is there a sign reversed somewhere in the code that causes this, maybe?

See, I'm the opposite, Up slops (10 per 1 up) it goes slow, regardless of what locomotive I use, and going down gets upwards of 400 KPH+. I can't get up a 5 to 1 slope either, just stalls out than speeds down, brakes applied fully.

neronakoma · Answer 5 · 2018-11-12T19:03:06.000Z

immersive railroading is based on a realistic scale of all equipment including track, grade change, and speed. if you are attempting to go uphill on a 5-1 slope, you are bound to lose control as the grade of that slope is a 50% incline. or a 5-1 grade. average grade for track is around a 60-1 or 45-1. recommended slope is 50-1. this goes for curves as well as switches and slopes. this may also help fix the issue you are having of trains going backwards on slopes as well

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On Sun, Nov 11, 2018 at 5:05 PM Steven ***@***.***> wrote: I can confirm this bug. Tested on version 1.3.1 (Will test on 1.3.2 later) I placed my track segments in one direction and have upwards and downwards slopes in it. When driving a train (empty) from west to east, the slopes (almost always) behave normally, slowdown on an upwards slope (10 blocks per 1 slope block) speed gain going down. It's much worse when driving the fully loaded from east to west. Every up slope speeds up the train insanely, every down slope slows it down, lets it roll backwards with no brakes applied. This makes it very hard to control very lengthy trains. Is there a sign reversed somewhere in the code that causes this, maybe? See, I'm the opposite, Up slops (10 per 1 up) it goes slow, regardless of what locomotive I use, and going down gets upwards of 400 KPH+. I can't get up a 5 to 1 slope either, just stalls out than speeds down, brakes applied fully. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#368 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AJBZZBkQbs8kGdD4P0_gaiYEuI38wNOtks5uuK0kgaJpZM4VUs_t> .

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