| Beautiful 1923 Baldwin builder's photo of the first of 45 2-10-2 Santa Fe type locomotives that were on the Great Northern roster. Specifics - Q-1, 63" drivers, 210 psi boiler pressure, 31x32" cylinders, engine weight of 428,340 lb, impressive tractive effort of 87,131 lb. According to Steamlocomotive.com " Big engines in every respect, these Santa Fes had the Belpaire firebox beloved by the Great Northern, 15" (381 mm) piston valves, and lots of weight on the drivers. Their tube & flues had large diameters and the 60 superheater flues were among the most in any boiler. A smallish grate area meant much less to an oil-fired class and they had few rivals in the adhesion weight they could throw into hauling a train. They were rated at 3,000 tons of trailing load (75 cars) over the mountainous Montana profile between Whitefish and Cutbank. Most were oil burners as shown in the specs. Delivered with 370 sq ft of heating surface and 5,499 sq ft total, the class later added 39 sq ft of arch tubes and a trailing-truck booster developing 12,200 lb." After 27 years of hard service, this locomotive was scrapped in 1950. |