Derailing under the speed limit

[Tiberius]

Posting this to see if anyone else had a similar issue with this division of track as well as a warning to those who arent aware yet
I was doing a (rather expensive) merchandise haul from harbor to machine factory and made a nice deal of progress. Now the issue here is on the line (going off the grid of the world map) B6 to B7 where the line basically zigzags. My speed was just shy of 20 kph when 2 cars derailed. I guess I underestimated the sharp turns to an extent, but even as i slowed below 10, 2 more jumped track behind the locomotive, which was going below the posted track speed at this point. Anyone else had this issue? Part of me wish I took the route through the oil wells.
(Edit: I should probably note that the railcars that derailed were all intermodal flatcars)

[Altfuture]

The zigzag sharp turns are the cause of this. They were initially made for railbus runs, but we'll update them to be wider. Thanks.

[Mr. Tumpus]

I derailed today in the yard of the Iron Ore Mine west, coming in from the south at less than 15 kph. Derailed one car on the correctly set switch, then when i fixed it and continued forward slowly it derailed several more cars. Cost me a very big time bonus.

[John D]

I've had a couple derailments in the past 24 hours. A few instances coming from Harbor to Military base using the eastern route, the car directly behind the DE-5 engine kept derailing at around 40 KPH in 40 zones (one was just exiting the east end of the harbor at the last junction). I also had another problem earlier today on a train from Iron Ore East to Steel mill. When I was starting to enter the circle (Even before any major turn), the ore car 2nd from the engine derailed, took 100% car damage and ~20% cargo damage while the rest of my train remained completely intact. It was a pretty minor derailment from the outside, and I'm pretty careful with my speed, especially down mountains.

[Sakke80]

I've noticed it helps a lot to use the throttle and loco brake VERY smoothly when one of your cars is still in curve and/or junction.

[AirRide]

June 7 2020 - Eastbound shunt engine DE2 to Iron Ore Mine East hauling 6 flatcars with excavators - 4th & 5th cars Derailed on a tight left curve in grid G-1 = repeatedly 10x. Eventually I made it past at under 10 mph. On another consist of flatcars, I corrected a Derail in the Steel Mill yard and the trailing car landed its bumpers on top of the car ahead. There was no way to disconnect them. I did not try to Remove the faulty car as that may have invalidated the haul.

[Grem™]

I also come across a similar one. For unknown reasons, one or several cars in different parts of the train (not necessarily one after the other) may go off the rail, but not completely, the train is still able to move with some braking, the cargo gets damaged. It seems like some kind of mistake, I always go 10 km below the permissible speed.

[EngineerKenny 123]

@Grem I had that happen to me on my last run, going from Food Factory to the Harbor. Not sure where it happened, but I had one car derail (train still able to run), and lots of damage to the food I was hauling.

[Kimo]

Originally posted by Sakke80:

I've noticed it helps a lot to use the throttle and loco brake VERY smoothly when one of your cars is still in curve and/or junction.

I was to write the same. Use independent brake in curves is simply dangerous. Think of an australian road train and brake the tractor only.

I never derailed a car under 30. It's all about momentum.

[Dkz1181]

Ive had this issue with a flat car loaded with Rails right behind a DE6 heading down to the harbour, it was bouncing around something wicked and i never noticed the car had actually derailed until i pulled into the harbour... but then i had connected 3 different jobs into one train so it was a very long and heavy consist ... Does consist weight have anything to do with derailing round corners ... like if having heavy cars behind light ones will the heavy cars pull the lighter ones off the rails when taking a tight turn?

[Torx]

I'm not even going to bother explaining where it was, the console needs XY coords in addition to the derail message.

However, the thing is, that it was exactly on the same spot. And the second time way under speed limit of 70 at 58. The entire train is only 3 cars long. I wonder where the pressure came from.

[TerrifyingMonkey]

There are some places on the map that keeps the train derailing, even when iI am under the speed limit.
It is the circle nearby the Foot Factory (F2) when you travel downwards. The Seed limit is 60, and some cars derail at a speed of 50! And the junction next to the tunnel (F6) when you go from Steel Mill to the Harbor.

[jtsoutpost]

The circle near the Food Factory is where I derailed 6 cars. Cost me 67k. Lately though, I have the lead car derail behind the DE6. It has happened twice in a row now. Makes me not want to driver it. :(

[Dkz1181]

Ive not played it of late, but im am pretty sure that this game is designed to replicate the 'string line' effect .. pulling too hard when going round a tight corner with light cars to the front and a heavy train to the rear... if so even if your below the limit, if your putting more force on the front of a train then the rear it will just pull the middle cars off the rails ....

Since all this seems to be happening at some what light turns it seems the most likely cause ...
id have to ask if your under power or coasting round the corners, going up hill or down and how long the trains were and the make up of the consists ... empty flat beds infront of heavy tankers ect.. accelerating while the rest of the train was still on the bend ..

all these things could lead to a derail ... so far ive only had it happen the once and im pretty sure its because i accelerated after a turn while the rest of the train was still in it.

[Overland]

Some very decent points here, It would seem that alot of people are used to oldworld type train simulators of pretty pictures and not much in the way of physics, while derail valley isnt perfect, speed limits auto generated according to track shape, numerous and fast changing.. keeping under the speed limit rightfully so doesnt mean you wont derail

There are a few sore spots on the map that altfuture the lead dev has answered in the first post in this thread, but in alot of cases people need to perhaps study more about how a train behaves and all the different situations this can give rise too, (especially accelerating through corners)

I dont mean this in an insulting or offensive way. learning how a train operates and becoming good at it should be a beautiful thing to undertake, a further step in enhancing this hobby and passion for all that is train related

I myself have had derailments like this.. 90% of them I can put down to my head being still wired for "Train Simulator 2020" etc where none of this matters and when a train derails its the end of the world with no recourse to understand how or why...

once you start to look upon the train as something akin to a living creature all with its own needs least not all centered on what the locomotives doing but about the whole train. I believe less derailments are likely, take the time to look behind not just infront. its just as important

Speed is but one factor of many.. as rail enthusiasts we've been passed off as mugs far too long by train simulators the likes of TS2020 and Trainz that would over simply or just be lazy about derailments and physics..

With derail valley, alot of us have to learn all over again
This isnt a bad thing :)

[Overland]

Some very decent points here, It would seem that alot of people are used to oldworld type train simulators of pretty pictures and not much in the way of physics, while derail valley isnt perfect, speed limits auto generated according to track shape, numerous and fast changing.. keeping under the speed limit rightfully so doesnt mean you wont derail

There are a few sore spots on the map that altfuture the lead dev has answered in the first post in this thread, but in alot of cases people need to perhaps study more about how a train behaves and all the different situations this can give rise too, (especially accelerating through corners)

I dont mean this in an insulting or offensive way. learning how a train operates and becoming good at it should be a beautiful thing to undertake, a further step in enhancing this hobby and passion for all that is train related

I myself have had derailments like this.. 90% of them I can put down to my head being still wired for "Train Simulator 2020" etc where none of this matters and when a train derails its the end of the world with no recourse to understand how or why...

once you start to look upon the train as something akin to a living creature all with its own needs least not all centered on what the locomotives doing but about the whole train. I believe less derailments are likely, take the time to look behind not just infront. its just as important

Speed is but one factor of many.. as rail enthusiasts we've been passed off as mugs far too long by train simulators the likes of TS2020 and Trainz that would over simply or just be lazy about derailments and physics..

With derail valley, alot of us have to learn all over again
This isnt a bad thing :)