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Thursday, April 11, 2024
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Kevin Morgan
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Arvada to Leyden (MP 7.5 to MP 11.9)
Arvada, CO
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87 (Add a Comment)
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Moffat Tunnel (UP)
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Union Pacific
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When Class 1 railroads were significantly smaller 40-50 years ago, it was not too hard for all the units on the roster to carry the same paint scheme. Today, when there are 7,000-8,000 units on the roster, it takes years (or even decades) to get everything repainted. UP changed their official paint scheme last year, removing the American flag from the long hood. But it will likely be many years before the "flag" units are gone. Here, two flag units and an ES44AC in the newest scheme, lead a loaded oil train east out of Leyden.
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Sunday, January 28, 2024
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Kevin Morgan
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Arvada to Leyden (MP 7.5 to MP 11.9)
Arvada, CO
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107 (Add a Comment)
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Moffat Tunnel (UP)
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Union Pacific
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To date, Union Pacific is one of only two Class 1 railroads to order any SD70ACe-T4s. CSX also ordered 10 units in 2019, but returned them to Progress Rail in 2023. The SD70ACe-T4 is the EPA Tier-4 compliant engine built by EMD. So far, it has not proven nearly as popular as the ET44AC, the GE counterpart. UP 3059 is as example of an SD70ACe-T4, the first four-stroke diesel-electric locomotive that EMD has offered.
Even though the unit is less popular than the ET44AC, neither model has enjoyed wide ranging success. The maintenance cost (and complexity) of the Tier-4 units is a turnoff for railroads, and many are simply rebuilding old units at this point to save on money.
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