How did the LNER Class A4 set the world speed record for steam trains? We break down the science, mechanics, and history behind this legendary locomotive. John Fetterman reacts to Elon Musk offering ...
The coal was hot. The crew were ready. On July 3rd, 1938, the 4468 Mallard, an A4-class steam locomotive, was performing an alleged brake test for its London and North Eastern Railway (LNER) owners.
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