Note: The subject of 5AT reliability is also discussed briefly in the 5AT Features section of this website. In Sept 2009, David Wardale wrote a lengthy letter in response to a question about the thermal efficiency of the 5AT in comparison with other “modern steam” designs. He wrote as follows: FDC 1.3.F.: Drawbar thermal efficiency […]
How will the Thermal Efficiency of the 5AT compare with Older Designs?
Note: The subject of 5AT Reliability is also described in the 5AT Features section of this website. The following summary of 5AT “reliability factors” was compiled by David Wardale in March 2005.Design features leading to a much higher reliability of the 5AT Class steam locomotive compared to First Generation Steam (FGS) Locomotives. The advanced technology […]
he following answer is taken from Wardale’s response to Leonard Staghurst whose letter was published in Steam Railway #277 (copied below): “Unfortunately Mr. Staghurst’s comments betray his lack of knowledge, not only of what is possible with steam traction but also of what has already been achieved. Consider the following. The above figures, which are […]