The 5AT Fundamental Design Calculations

Book, paper, The 5AT Fundamental Design Calculations with Accompanying Diagrams and Technical Specification, by David Wardale BSc Mech. Eng., compiled and edited by Chris Newman on behalf of the Advanced Steam Traction Trust, Edinburgh 2015. 556pp. The book presents Wardale's fundamental design calculations for modernising and improving steam locomotive performance, efficiency, reliability and economy. The calcuations were originally developed for the proposed creation of a 'modernised' BR Standard Class 5, termed a 5AT, by the 5AT Group. The group failed to build the locomotive, but became the Advanced Steam Traction Trust in 2012. 2 copies.