Should not the 5AT be a more radical design incorporating more innvotive features? In Feb 2009, the following question was asked by a reader in Minnesota, USA: “Why, when you are from the country that rbulleally brought innovation to steam design still persist thinking inside the box? Bulleid went outside the box with the Leader […]
Why is the 5AT not more innovative?
The following comes from a “Summary Specification” drafted by Wardale on 17 Apr 2001: “The power of the 4-6-0 proposal fully utilizes the available adhesion, therefore any larger locomotive designed for higher power will have to have more coupled axles. A 4-6-2 of higher power would not have adequate adhesive weight, and an 8-coupled locomotive […]
The following answer is taken from Wardale’s response to an unpublished letter from Bryan Attewell written in response to Wardale’s two-part article “Steaming into the Future” published in Steam Railway magazines #272 and #273 (see ‘Articles and Letters’ page of this website): “Regarding the designations “mixed traffic” and “express” we should not forget that for […]
In fact we recognize that it will be impossible to gain approval to run any faster than 75mph in its initial period of life. We would hope that lifting of the limit to 90 mph would be granted after the locomotive has proved itself safe when running at 75mph for some (unknown) period of time. […]
The following is taken from Wardale’s response to an article by Bob Butrims published in Locomotives International #56 which itself included a response to the artlcle “What Could You Do With £1.7 Million? David Wardale Answers” as published in edition 55 of the same magazine. Bob’s response included the comments that: “there is the problem […]