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Posted by tracksionmotor on Sat Apr 22 00:01:04 2006, in response to Re: SMEE, posted by Allan on Fri Apr 21 11:28:09 2006.

One of my buddys pointed out my work on SMEE carzzz but I just had a hard time with association. Every truck has an independent Pneumatic Operation Unit (brake panel) that uses electromagnetic valves to operate brake systems in sync subway carzzz and heavy passenger rail. Freight does not...trainline is straight air and brakepipe....brake application is not synchronus because it takes time for the air pressure to reach the furthest cars....braking should start at the end of the consist.

To overcome braking sync in heavy freight, radio controlled locos are inserted in the middle. A real situation was pointed out to me in class...there was a seperation...the operator noticed a 'loss of load' on his TOD...the back half was operating ten miles behind when he stopped...it stopped too.

Straight air Motor car Electro-pneumatic Emergency...SMEE. Thank you for the refresher....SMEE is what I do. Kudos to EngineBrake.
RRCI Peter


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