A TRS19 and above steam engine spec for the final version of the Drummond T9 as rebuilt by R.W.Urie and further modified by R.E.L.Maunsell. Boiler pressure: 175psi. Tractive effort: 17670lbs. 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.