Isolating locomotives

Q What does it mean when diesel locomotives are “isolated?”— Ray Russell, Naples, Fla. A “Isolating” a particular locomotive in a multiple-unit consist means that the prime mover is still running, but the main generator and electrical system for propulsion are disconnected. The locomotive will not respond to throttle settings and essentially is along for […]

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“Manifest” in railroading

Q What does the term “manifest” mean in relation to railroading? Where and when did it originate?— Wesley Greer, Castle Rock, Colo. A Manifest comes from the Latin word manifestus, meaning “visible,” or “detected in the act.” It went into Middle English (because the Romans occupied England for a while), and in 1432 the word […]

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Talgo speed comparison

TRN-AT0711_A-Talgo-suspension

Talgo’s pendular suspension lowers the carbody’s center of gravity and relocates its center of rotation, all enabling Talgo cars to take curves faster without causing excessive passenger discomfort due to the centrifugal force. Q How much faster would a Talgo-like train be than a conventional single level or bilevel (Superliner) over the same stretch of […]

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