Quote Originally Posted by Tishimself View Post
Well, yes and no. Main air pressure for the main pipe on freight is 90psi, on passenger it's 110...main reservoir pressure is 125-140psi. I do not need dynamics to stop a train, I can do it with stretch braking, and maybe a small shot at the end. All engines, every one of them, has a compressor and a it's engaged at all times. Some are shaft driven, others are electrical, and computer driven. Depends on the the model and the year built. I have no control over them, they do as they please. As for the cars, each has a tank, and that is always charged 90psi. It is the ABSENSE of air, that sets the brakes....as in this diagram...

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Thats crazy. The air pressures are lower then id have ever thought. A truck and trailer max out at 130 psi and usually roll around 120 when not being depleted. Constant anything over 60 psi will keep the emergency brakes released. Once the system gets under 60 psi the valve will pop by itself. When im driving aroud on grades my truck will hold 120 and only looses 10 psi in an extreme brakeing situation. My compresser has a governor on it. Kicks in at 90 and cuts out at 120. I guess its all about volume with you guys. I wanna go on a train ride with you TIS. How do I make this happen from fontana???