A TRS19 and above steam engine spec. for the Metropolitan Railway E Class 0-4-4 tank designed by T F Clarke and built by Hawthorn Leslie & Co with slightly larger bore cylinders than the original locos buit at Neasden. This spec. uses real world data and will perform most accurately if used with Stovepipe's e-specs for British rolling stock. Boiler pressure: 150psi. Tractive effort: 14515lbs.