A TRS19 and above steam engine spec. for the GWR Queen Class 2-2-2 tender engine with round top firebox and 18in. x 24in. stroke cylinders. Boiler pressure: 150psi. Tractive effort: 13140lbs. This spec. uses real world data and will perform most accurately if used with Stovepipe's e-specs for British rolling stock. Please see the included readme.txt for further information.