Elvas Tower: Maximum Speeds and Consists - Elvas Tower

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Maximum Speeds and Consists Thoughts about setting the Maximum Speed for a Train

#1 User is offline   darwins 

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Posted 13 January 2020 - 05:02 AM

In MSTS MaxVelocity ( 60mph ) was included in eng files as it was needed to calculate physics behaviour. The number used to give the required performance was not always directly related to either the permitted or achieved maximum speed.
As far as I am aware this is no longer required as a physics input for locomotives ( steam diesel or electric ) that have Open Rails physics, and is not required in wag files.
The current way to set the maximum speed of a particular train (in activity mode or explore route) is to use the lines in the consist file.
So for a train allowed to travel at 100 mph we might have MaxVelocity ( 44.7 0.75 ) in the con file and this will also show as the maximum speed in the track monitor where line speed permits, if the train now attaches another vehicle, restricted to 75 mph the MaxVelocity in the consist file does not change so if the line speed permits the track monitor window will still show 100 mph.
One way to deal with this might be to include MaxVelocity ( 75mph ) or MaxVelocity ( 120kmh ) in the wagon section of eng and wag files. Then the lowest maximum speed of any vehicle in any consist would set the maximum speed for the train shown in the track monitor.



#2 User is offline   Traindude 

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Posted 15 January 2020 - 11:57 PM

In regards to this subject, especially unfitted freight wagons in the UK, we could implement wagon/consist speed limits in a manner that overrides all higher speed limits on the route, and enforces that lower limit until the wagon(s) in question are uncoupled.

For example, if you have an unfitted freight consist that in the real world would be limited to say, 25 mph, then the game would enforce the maximum speed limit of 25 mph for this player consist, even though the max track speed on that section of line may be much higher than that, and if the player consist exceeds 25, the overspeed warning is triggered. Likewise the track monitor would state the speed limit as no higher than 25, even if the actual route speed limit is higher.

#3 User is offline   Dogbert 

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Posted 16 January 2020 - 09:18 AM

You can already do this by designating a max speed in the consist files.

All my consists for Thames - Trent route are set to realistic speeds for steam era working.

Regardless of max line speed, my unfitted mineral consists. Never exceed 30mph or lower when stipulated by a PSR.

#4 User is offline   ShortNorth 

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Posted 17 January 2020 - 04:36 PM

View PostDogbert, on 16 January 2020 - 09:18 AM, said:

You can already do this by designating a max speed in the consist files.

All my consists for Thames - Trent route are set to realistic speeds for steam era working.

Regardless of max line speed, my unfitted mineral consists. Never exceed 30mph or lower when stipulated by a PSR.


G'day Dogbert,

Do you have any specific settings you could reveal for us please, as I can't find any info on what the two figures in the MaxVelocity parameter actually represent.

Regards, Brian

Author of :
Black Country - 1920 and LMS 1930's
Huddersfield and Environs - 1920 and LMS 1930's
LYR Heartland - 1920

#5 User is offline   Dogbert 

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Posted 21 February 2020 - 04:30 AM

Sorry buddy haven't been back here since i posted.

I have been using these settings for donkeys years, in both MSTS & OR.

They do restrict the AI and autopilot controlled consists to the stated max speeds.

08.94080 = 20mph

13.41120 = 30mph

15.64640 = 35mph

17.88160 = 40mph

20.11680 = 45mph

22.35200 = 50mph

24.58720 = 55mph

26.88240 = 60mph

31.29280 = 70mph

33.52800 = 75mph

35.76320 = 80mph

40.23360 = 90mph

42.46880 = 95mph

44.70400 = 100mph

Works for me but i am not saying it is the only way to do it.

Mike.

#6 User is offline   atsf37l 

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Posted 21 February 2020 - 02:15 PM

Thanks for the table. I'll be saving it in my tutorials. I assume ( make A$$ of U and ME :) ) that the numbers you give are the first numbers in the MaxVelocity statement as represented by the 40.00000 in the case below. What of the second number, in the case below the 1.00000? It also seems to vary.

SIMISA@@@@@@@@@@JINX0D0t______

Train (
TrainCfg ( 3DT_WP3_F3ABB
Name ( "3DT_WP3_F7PA + F3Bx2" )
Serial ( 1 )
MaxVelocity ( 40.00000 1.00000 )
NextWagonUID ( 4 )
Durability ( 1.00000 )
Engine (
UiD ( 1 )
EngineData ( FP7_WP_805A 3DTrains_WP_Zephyr )
)
Engine (
UiD ( 2 )
EngineData ( F3B_WP_802C 3DTrains_WP_Zephyr )
)
Engine (
UiD ( 3 )
EngineData ( F3B_WP_803B 3DTrains_WP_Zephyr )
)
)
)

#7 User is offline   Dogbert 

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Posted 21 February 2020 - 02:57 PM

atsf37l, i am not that clever buddy. I left the second number well alone.

After i found out it worked fine, by changing the first number. :crazy:

Sorry i cannot be more help. But these days my mental health is all over the place.

EDIT: Just had a thought, i believe the second number is acceleration.

Regards,
Mike.

#8 User is offline   casperdog 

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Posted 21 February 2020 - 03:37 PM

Hi,
From the Steam 4 Me site tutorials:
"MaxVelocity ( 33.08096 0.22339 )
First number is the actual max speed (in meters per second) based on TE/tonnage;
Second number is some kind of multiplier that determines what speed the AI train will slow to on grades and curves."

And:
"Here's a table summarising the findings - at 75% Expected Performance:

First Parameter Second Parameter Min : Max speed of AI train in mph
MaxVelocity ( 12.34 0.50 ) 10:20
MaxVelocity ( 12.34 0.75 ) 15:20

MaxVelocity ( 18.50 0.50 ) 15:30
MaxVelocity ( 18.50 0.75 ) 22.5:30

MaxVelocity ( 24.60 0.50 ) 20:40
MaxVelocity ( 24.60 0.75 ) 30:40

MaxVelocity ( 30.80 0.50 ) 25:50
MaxVelocity ( 30.80 0.75 ) 37.5:50

MaxVelocity ( 37.00 0.50 ) 30:60
MaxVelocity ( 37.00 0.75 ) 45:60"


Maybe that helps.
Clive

#9 User is offline   atsf37l 

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Posted 21 February 2020 - 05:51 PM

Sure does. Thanks Clive and thanks Dogbert. And Mike, that's the reason I save this stuff to my Tutorials folder! :bigboss:

"Donkey's years," eh? Spoken like a true Welshman. :)

#10 User is offline   cr-stagg 

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Posted 21 February 2020 - 05:54 PM

MaxVelocity in a consist file: There are two numbers. Speed and an acceleration factor.
The first is roughly 40 times the Lead Engine MaxVelocity value divided by 90

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