A TRS19 and above steam engine spec. for the LNER Gresley P2/2 2-8-2 tender engine with streamlining and piston valves. Boiler pressure: 220psi. Tractive effort: 43462lbs. Braking values set to emulate vacuum brake performance. This spec uses real world data to the maximum extent possible and will perform most accurately if used with appropriate enginespecs (with VB in the title) for British rolling stock. Please see the included readme.txt for further information.