Quote:
Originally Posted by For The Love of Music
here’s a question, the was an engine in the front and one in the back - how do they synchronize speed, push and pull and more so how did the synchronize back in the day?
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In todays world it's called 'distributed power' and it's all done via microprocessor technology(radio / satellite) with control being through the lead locomotive controls. very often seen, especially out west, will be head end power, mid-train and a unit on the rear end.
back in the day (steam) it was all done individually with a engineer and fireman in each locomotive. Coordination of movement was accomplished via radio and before that signal via the engines whistle.