Chesapeake & Ohio 2-6-6-6 No 1629 was built by the Lima Locomotive Company in 1944, one of 25 Alleghenies in the third order of these locomotives. These H-8 Class single-expansion articulateds had 67" drivers, four 22.5 x 33" cylinders, 260 psi boiler pressure and could exert 110,200 pounds of tractive effort. The firebox was immense, measuring 9' x 15', requiring a six-wheel trailing truck to support it. The new wheel arrangement needed a new name and C&O selected the name "Allegheny" for the mountain range that this new locomotive would do its work. The tenders for these locomotives were the largest used on the C&O, with a 25,000 gallon water tank and a 25 ton coal bunker. In order to keep the overall length of the locomotive and tender within the limit that existing turntables could handle it was necessary to make the rear section of the tender higher, thus causing more weight to be at the rear than the front. The tender had a six-wheel leading truck, but an eight-wheel trailing truck was needed to carry the weight in the rear. The C&O's "Alleghenies" were taken out of service beginning in 1952 with the last fire dropped in 1956. This image from my collection was taken at the Kaplan scrapyard on the south side of Chicago in 1956.
