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[^] Thank you all for your replies. I think I'm beginning to understand something of the operation of a locomotive and a lash-up. For those of you who work in or on locomotives, I envy you, but I'm sure that sometimes, the job has got to be a hassle. I wish I could make friends with a crew that would let me have a cab-ride, but around here, that's not going to happen, unless the local switching crew happens to do it. I don't get a chance to meet any of them, because when they're operating, I'm as far away as I can get so as to not interfere with their operations or distract them, but close enough that I can watch them work. [sigh] I love the technical details and the comprehensiveness of all of the replies and I'm glad I asked the question. However, it now occurs to me that there are a couple more questions that arise out of this thread. 1) If a diesel-electric locomotive is DIT, do the motors on the trucks generate any electricity (I'm presuming that's the way that dynamic brakes operate, but being a non-engineer, I'm probably wrong.) and if so, where does that juice go, or are the motors electrically isolated so that no current flow can occur? 2) If a diesel-electric locomotive is DIT somewhere back in the middle or the end of the train, are the brake lines connected to the cars on either end, so that in the event of a braking situation, the locomotive will also brake. Please bear in mind that I'm really not that well educated on locomotive operations. It took me years to realize that steam locomotives use two steam chambers per cylinder so there is a constant application of steam on one side of the piston at all times. When it comes to diesels, I'm even less educated. Hence, the original question. [bow] [D)]
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