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Wednesday, January 31, 2024
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Kevin Morgan
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Chemical (MP 14.5)
Arvada, CO
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455 (Add a Comment)
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Moffat Tunnel (UP)
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BNSF
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This SD70MAC is actually designated as an SD70MACe by BNSF. Two dozen SD70MACs had some electronic equipment upgraded, were repainted, and received the "e" suffix on the model. Not sure exactly what, electronically, was upgraded. But it is nice seeing the latest scheme on an SD70MAC. The train is pulling by the old "Chem Spur", which hasn't been used in about a decade.
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Wednesday, January 31, 2024
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Kevin Morgan
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Chemical (MP 14.5)
Arvada, CO
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426 (Add a Comment)
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Moffat Tunnel (UP)
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BNSF
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A single SD70MAC brings up the tail end of the Denver-Provo as the train enters Barbara's Gulch, rolling by the oil steel structure in western Arvada. The SD70MAC is sporting the latest paint scheme. That is a little uncommon for SD70MACs, even in 2024. BNSF has spent a lot of time (or money) on repainting these yet. Most still wear the Heritage 2 scheme, or even the old "green and cream" scheme.
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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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322 (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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