Releasing Brakes Quickly

[ivatt]

Possibly a dumb question but is there a quick way to release the brakes in OR.

I confess not to understand the physics of the braking parameters and I am never quite sure when the brakes have been fully released, unless I hear the pressure being released.

Any help appreciated.

Thanks

[eric]

Shift / does wonders, assuming you're at a standstill and both engine and train brakes are at zero.

[ivatt]

HI thanks for the reply.

I have just tried that but doesn't seem to work. On the Settle & Carlisle Short Passenger Run which I am using to test when the activity starts it shows:

Train brake Apply 30% 100% V O inHG EOT BP0

Holding down ; eventually releases brakes so it shows

Train brake Release 100% V21 inHG EOT BP21

Once that shows and movement is set forward increasing the throttle gets the train moving.

[dennisat]

I've noticed the very slow response (applying and releasing) of vacuum braked trains (most UK steam!) and have reported it as a bug on the OR tracking system. I don't know how quickly they'll respond because there can't be many people around who've had experience with vacuum braked trains, real or simulated.

Dennis

[kox]

Shift / does wonders, assuming you're at a standstill and both engine and train brakes are at zero.

That's a "cheat"

By the way, the brake response as i know can be set in rolling stock .eng files, there is a number which control the controller sensitivity. It's a % per seconds (% is in normal number so it's can be 0.001 to 0.99).

[dennisat]

By the way, the brake response as i know can be set in rolling stock .eng files, there is a number which control the controller sensitivity. It's a % per seconds (% is in normal number so it's can be 0.001 to 0.99).

Even allowing for that it seems to me to be the rate, and lag, of pressurising and exhausting the vacuum pipe that causes most of the delay.

Dennis

[OTTODAD]

There is no problem with releasing Train Brakes at a reasonable rate of knots in MSTS with a once only pressed and held-down ; key !

Changing their *.ENG files setting for the benefit of working properly in ORTS would then affect how they work in MSTS !

The first part of this video shows the MSTS MLT Dash-9 releasing it's Train Brakes with just one continuous press of the ; key.

The second part shows it in ORTS and after one continuous press of the ; key not all the Train Brakes have been released and another continuous press of the ; key is required to fully release them, taking a long time.

http://www.otto-wipfel.co.uk/video/msts-vs-orts-train-brakes.wmv
Alt-Enter to view Full-Screen.

I do not know whether that is the case in a real MLT or other Dash-9 and all locos in ORTS require 2 continuous presses of the ; key to fully release their Train Brakes in slow motion !

O t t o

[apco25]

OR has been designed to emulate real braking performance with graduated release and charging rates for compressed air brakes i.e of Westinghouse design. There is a brake pipe charging rate value to be set within OR.

OR may not have implemented a method to emulate vac braking just yet. I am not sure why Otto and the other replies is comparing a Westinghouse brake design default Dash 9 with the vac brakes since the OP didn't say anything about vac brakes in the first place!?

[seagoon]

Changing their *.ENG files setting for the benefit of working properly in ORTS would then affect how they work in MSTS !....

For those who now use OR exclusively for operating, and MSTS only for the editing suite, such an effect would be immaterial.

Far preferable to have OR as realistic as possible.

Bruce

[OTTODAD]

I just tested the Train Brakes of an ICE-3, a TGV-Duplex and a BR Class 50 diesel and all their Train Brakes act the same.

The first continues press of the ; key moved the Train Brake lever to it's 0% position but does not fully release them.

Another continues press of the ; key is necessary to fully release the Train Brakes.

Is there a real E or diesel loco driver in this forum who can tell us how the Train Brakes of the real locos they drive function ?

O t t o

[OTTODAD]

Have not tested steam locos before in ORTS so here is a 2 Big Boys + 49 mixed freight wagons + 2 Northern Pacific 2661 train running in MSTS. Not being a "Whistle Blower" was not aware that it's whistle does not sound and will have to look into this !

All Alt-Enter to view Full-Screen.
http://www.otto-wipfel.co.uk/video/steam-msts.wmv

Here is the same consist running in ORTS. Observe the F5-Hud settings of the driving controls
http://www.otto-wipfel.co.uk/video/steam-orts.wmv

And finally here is a Big Boy running in TS-2013
http://www.otto-wipfel.co.uk/video/big-boy-ts-2013.wmv

O t t o

[ragtimer]

US freight train single pipe Westinghouse air brakes have no provision for a partial release so to model that is unreal;MSTS is not bad modelling that but I think the release times are rather fast.The algorithm used for UK vacuum brakes is totally unrealistic and bears no relation to what occurs on a real locomotive/train (I have driven vacuum braked steam hauled trains).

[tbundy1982]

I too have noticed the need to press the train brake release button again when I get back to Service 0%. In the real world, the train brake lever has no obstruction that prevents it from going straight to release, similar to how MSTS models it. Also, in the RW, the brake handle freely slides from release to first service, then the engineer must push the handle over a notch to start dropping more pressure. The handle slides freely again until you reach the far side with handle-off and emergency, which also require a extra push. Mind you, these pushes don't require much physical effort, but the notches of a Wabco 26L brake stand can prevent the engineer from applying more than expected.

Unfortunately, I don't know the first thing about vacuum brakes.
Tyler

[OTTODAD]

Below are screenshots of more tests driving steam locos in ORTS, this time a K4 as used by the PRR - Eastern Region route and again got this error, LOG attached.

Then I tested the default Flying Scotsman:
http://www.otto-wipfel.co.uk/video/orts-flying-scotsman.wmv
Alt-Enter to view Full-Screen.

Observe the Frame Rates and Train Brakes being released in 2 stages. But this time did not have to press and hold down the ; key twice.

The missing Big Boy whistle was caused by me not having it's Common.Snd folder in that copy of MSTSBin used and replacing it with the converted from DAV to WAV better sounding Railworks one did not work.

O t t o






.

[OTTODAD]

US freight train single pipe Westinghouse air brakes have no provision for a partial release so to model that is unreal; MSTS is not bad modelling that but I think the release times are rather fast.The algorithm used for UK vacuum brakes is totally unrealistic and bears no relation to what occurs on a real locomotive/train (I have driven vacuum braked steam hauled trains).

Hi Peter !

I think that you are one of the older BR loco drivers, first having driven steam locos and then re-trained to driving diesel locos ?

O t t o