A TRS19 and above steam engine spec. for the GWR 3206 Class 'Barnum' 2-4-0 tender engine with Belpaire firebox, superheating and 26in. stroke cylinders. Boiler pressure: 180psi. Tractive effort: 17415lbs. 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.