TA的每日心情 | 怒 2018-8-5 16:46 |
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签到天数: 681 天 连续签到: 1 天 [LV.9]QD-高级会员Ⅲ
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The Donner Pass route became ever more important as California’s economy grew, and the Southern Pacific Railroad soon found that more power was needed to haul increasingly heavy trains through the Sierra Nevada. 2-8-8-2 Mallet locomotives answered the call, but the route’s many long tunnels and snow sheds caused new problems: locomotive cabs were filling with fumes from the smokestack while inside the tunnels, so the solution was to build a locomotive with the cab at the front – the ‘Cab Forward’. It may sound simple, but the design required a number of complex technical solutions: the oil-fired firebox was mounted at the leading end of the boiler, so it was supplied with oil via low-pressure pipework running all the way from the rear tender. |
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