| Massive brute is this 4-12-2 wheel configuration built by Alco-Brooks in 1926 for the Union Pacific, the only railroad to have this type locomtoive. Specs - serial #67026, UP-2 class, 67" drivers, 220 psi boiler pressure, three 27" diameter cylinders (two with 32" stroke and one with a 31' stroke), engine weight of 496,000 lb, tractive effort of 96,646 lb. The loco was "vacated" in January of 1955. From the collection of Howard W. Ameling |