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"Boosters" on steam engines
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[quote]QUOTE: <i>Originally posted by tree68</i> <br /><br />IIRC, they were/are steam/piston driven, just like the main drivers, but obviously smaller, and were coupled through gears to the boosted axle. They could be engaged and disengaged at will, and were only used to increase tractive effort at low speeds. As for how (and if) cutoff was adjusted, well, I don't know! <br />[/quote] <br /> <br />Okay, thanks, so it was mostly something to break the train free from a dead stop? Makes sense.
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