Vacuum Brakes

[lucid topaz]

Instead of using air brakes to brake the train, it draws a vacuum to keep the brakes off, without a vac the brakes applies. https://en.wikipedia.org/wiki/Vacuum_brake#Ejectors

[warm fjord]

Yes

Bulleid style though

[gloomy condor]

no

vaccum is inferior

[radiant root]

doesn't the game already use vacuum brakes

[lucid topaz]

No, the game uses Air brakes (which uses air to keep the brakes off,) Vac brakes use Vacuum to keep the brakes off.

[gloomy condor]

It's harder to keep a vaccum than keeping air

[warm fjord]

You can try as much as you want but you aren’t erasing the superior vacuum brakes from history

[nocturne aurora]

'superior' naaaaah fam. Air brakes are supierior for one simple reason.
You can get higher brake effort just by increasing the pressure. Vacuum brakes? Gotta use more/bigger brake cylinders. The vacuum brake is the best simple as dirt system, the air brake is the best system for actually hauling a lotta cars.

Would be fun to have in DV though, not gonna lie.

[lavish swift]

Vacuum brakes for small shunting jobs?🥸

[nocturne aurora]

Vacuum brakes once ya'll get the four wheel cars working.

[kind echo]

vacuum brakes on a 1000 meter long train

[stone sparrow]

That's the point! XD

[stone sparrow]

And vacuum also doesn't give you as much pressure differential to drive the brake systems and is not as powerful.
With a vacuum system then difference between 1 atm and 0 pressure is the maximal pressure differential you can get, whereas with pressurized air you can get as much pressure differential as your pumps and pipes and values can handle lol

[radiant root]

Air brakes do have some flaws which the 1989, 1994 and 1996 Cajon pass runaways are prime examples

[nocturne aurora]

The 89 one wouldve happened either way- relying on inoperative dynamics, then by the time you apply the airbrake fully, you juust roast the brakes without slowing down.

Besides. Everything built by man is flawed. Vacuum brakes are simple but inherently limited, compared to proper airbrakes.

[north dew]

vac brakes are fine if it's 1920s Britain and your trains are short (and unfitted anyways lel)

But for longer, heavier trains you need air. Vacs would do fine in the Valley inn most cases though, and would be an interesting mod as it'd involve some work to get the sim right

As you have the same issues with taking time to apply, but you also start seeing the ability to release the brakes dropping off as the train gets longer

[gloomy condor]

Vacuum would be neat for a passenger locomotive. But for freight it just seems dumb