Brake sounds

What is the difference between Air.wav and Brake.wav? I find they play together when releasing the brakes from B3 to B2, from B2 to B1, etc...
And is there any way to adjust the compressor speed? I know in the train.dat, there is a value saying at what pressure, the compressor starts and stops. But some in real life, compressors might take 5 min to make the tank full, but some may take maybe just one minute to pump the same amount. So how do you adjust the compressor speed?

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RE: Brake sounds, Stooopid_person, Nov-18-03, 08:24 AM, (1) RE: Brake sounds, Mr Gizmo, Nov-18-03, 09:15 AM, (2) RE: Brake sounds, ferrovipathe, Nov-19-03, 03:31 AM, (3) RE: Brake sounds, Stooopid_person, Nov-19-03, 04:17 AM, (4) RE: Brake sounds, Mr Gizmo, Nov-19-03, 06:23 AM, (5) RE: Brake sounds, Stooopid_person, Nov-19-03, 06:29 AM, (6) RE: Brake sounds, ferrovipathe, Nov-19-03, 07:46 AM, (9) RE: Brake sounds, ferrovipathe, Nov-19-03, 07:22 AM, (8) RE: Brake sounds, ferrovipathe, Nov-19-03, 07:04 AM, (7) RE: Brake sounds, Stooopid_person, Nov-19-03, 10:17 AM, (10)

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erm, *bump*

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LAST EDITED ON Nov-18-03 AT 09:25 AM (EST)

Stoopid...
Believe it or not for locomotives the vast majority of them feature the same type of westinghouse braking system, within the brake type. IE Self Lap or Straight Air.With air compressors space is a problem so often air compressors are the same size for locomotives, since if the air compressor was to take more air in at a time, it would need a bigger compression cylinder, which means more space on a loco, and when i last looked in a 37s engine room, it wasnt exactly spacious... In electric locos particularly the 86, 87 and 90 the compressor is located on the underframe towards the centre of the loco, cant miss it its in a little frame, in 37s 40s 46s and 45s its located in the bonnets. In the 31s, 33s, 47s, 55s, its located internally opposite the radiator end. In the 50, 56 and class 43 its located on the underframe. Alas as far as i know its not possible to alter how quickly the resevoir is refilled, i think you can only alter how much air is taken with each brake notch. Obviously where your question becomes valid is for multiple units where the compressor is much smaller then on locomotives.

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Hi !There is a difference between filling up air tank from zero and refilling after some brake use. And, tank size and compressor power are adjust to refill in nearly one minute in normal use. It is a security.Mr Gizmo is right, compressor and air tank are smaller on multiples units, because each one is like a standalone train. (And TGV is a multiple unit too)But locomotives must refill their air tank, and each coach's one.
So, their compressor is more powerfull than necessary to refill their own air tank. And there is a difference between passengers, freight, or mixed locomotives: the braking speed.
With westinghouse braking system, (in positive pressure, I don't know with vacum system), each coach (passenger or freight) have its own air tank. There is a special device ( 'triple valve' in french, I don't know in english) which adjust air pressure in brakes' cylinders proportionally with falling down pressure in air pipe. As that falling down pressure can take a long time to go from locomotive until last coach, freight train are always braking slowly.
With passengers train, most of them have now an electric command which apply brake in instant on all train. But it was not thirty years ago. (If you want to create old timer train...)Some locomotives like diesel use air from tank to start up their main engine, and after that compressor must run longer to refill up air tank, because air pressure is often after very low.
All the best.

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I'm talking about BVE! Not real life!

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And isnt bve based on real life....The point myself and ferrovipathe are trying to make is.... in answer to your question no its not possible to alter the compressor speed, but the other point is... you wouldnt need to as the vast majority of locos have the same speed resevoir recharge rate.Ferrovipathe..Vacuum works differently to straight air, if i recall with vacuum there are no air cylinders on the coaches, you simply have an air pipe run the entire length of the train. When a vacuum is created the brakes are released.. sort of like sucked off the wheels if you like . but when the vacuum is broken the brakes are applied. The problem with vacuum is however often the pipes would leak on or between one of the coaches causing the brakes to be applied, the fireman or secondman would then have to isolate the vacuum in the affected coach which would render that coaches brakes disabled and reducing the overall braking efficiency of the train.I dont know about france?? but actually very few freight trains were vacuum braked over here this was a practice only seen in the southern region (ever seen the bogie brake vans with two large air tanks at the rear) someone will most likely proove me wrong but AFAIK the majority of freight trains simply had hand brakes on the wagons, and the train relied soley upon the braking power of the locomotive and the brake van to bring it to a complete halt.

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>The point myself and ferrovipathe are trying to make is....
>in answer to your question no its not possible to alter the
>compressor speed, but the other point is... you wouldnt need
>to as the vast majority of locos have the same speed
>resevoir recharge rate. But probably since this is a Japanese program, wouldn't it be based on Japanese trains instead of UK locos?
The train that I have now, the compressor runs for too long. But the compressor start and stop pressure is realistic.
I know, if I adjust the comrpessor start pressure, let's say now, it is 75psi to make the compressor start, if I adjust it to 85psi, the compressor will not be on for that long. But the problem is that the compressor will switch on more frequently instead... which I also do not want.

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Hi !As I said, BVE is based upon real life.
Japanese trains are like in most country in world, brakes use positive pressure. Yes, they drive on left, but it is because samourais were right hand riders and fighters. (like in UK).
We drive on right because Napoleon want to make a break with outlaws, and old time....About compressor, if you adjust low pressure to 65 psi, compressor must run longer to reach hight pressure which stay the same.
And if you adjust ti 85 psi, that pressure is reach more quickly, so compressor run more frequently, but in shorter time. That's like real life. And hight pressure is in most trains the same...

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Hi !Continental trains use positive pressure brake (westinhouse). In case of air pipe breaking, brakes are applied, and train stop.In France, there are no break van. Nearly each wagon have air brake, and the only reason of slow speed of most freight trains is that attchment between them is often relaesed.
We have also some freight trains running at 160 km/h (fruits comming from spain for exemple), and they are like passengers trains.And there is a long time SNCF don't have anymore fireman or second man on freight train. Driver is alone day and night.Thanks and all the best.

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Hi !In BVE, sound of compressor use 3 wav files:cpstart : starting of compressor (5 seconds)
cploop : noise of compressor refilling tank
cpend : wav of compressor stop.
There is no way to adjust time of playing cploop. (I think it is build in program).
You can only adjust cpend.way. If you want an compressor running 5 minutes, you must create a 4 minutes long cpend.wav. Sorry !
Or, if you only want to hear only one time the compressor (for exemple at starting) working longer than usely, create a .wav with cpstart, then cploop (1...60 minutes) and cpend.About brakes:
air.wav is the noise of brake release (outside)
brake.way the noise of the air leaving the brake's handle (in cab).Brake.wav is used when you apply brake (westinghouse one handle system, like in heavy coal or us freight routes), and air.wav when brakes are released.I don't remember if brake.wav AND air.wav are played together when releasing brakes, but if so, it's perhaps because brake handle refill train's air pipe, and as you are in cab, you must hear that.You know, BVE is really a very good train simulator, because nearly everything in it is like in real life. And many things in BVE work like in real life. So, understanding real life make BVE more simple to use. That's also why it is not simple to create routes or trains, and why it is difficult to find a gameplay failure in BVE.Mackoy is realy one of the best.All the best.

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>Or, if you only want to hear only one time the compressor
>(for exemple at starting) working longer than usely, create
>a .wav with cpstart, then cploop (1...60 minutes) and cpend. I don't get that part.
>I don't remember if brake.wav AND air.wav are played
>together when releasing brakes, but if so, it's perhaps
>because brake handle refill train's air pipe, and as you are
>in cab, you must hear that. I'm not sure whether this might affect it, but the brake type from the train.dat is
#BRAKE
0
1
1It does play together. I made Air.wav the doorclosing sound and Brake.wav the door opening sound. So, when I release the brake(EB to B3, B3 to B2, etc), I hear both door close and door opening sounds. That's why I know they'll being played together. And now, that door closing sound is not BVE closing the doors.

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