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T1 No. 5550 cylinders nearing completion

Summary by trains.com
One of four cylinders for T1 4-4-4-4 is test mounted to the locomotive frame. Each cylinder unit weighs nearly 8,000 pounds. Before finished, this assembly will go through an extensive machining, welding, and stress relief process. Three photos, T1 Trust Pennsylvania Railroad No. 5550 continues to move toward reality. The T1 Trust reports that cylinder fabrication is now nearly 66% complete. Overall, the new locomotive is about 53% done. Two pro…
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trains.com broke the news in on Tuesday, October 28, 2025.
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