High-pressure Steam Locomotive - The Straightforward Approach

The Straightforward Approach

The Baldwin 60000 prototype worked at a modest 350 psi (2.41 MPa) and did not use either of the complex systems described above. It had a relatively conventional watertube firebox and a firetube boiler. Nevertheless, high maintenance costs and poor reliability more than cancelled the fuel economies promised by high-pressure and compounding, and the design was not repeated.

Other relatively conventional high-pressure locomotives were built in the USA, including the remarkable triple-expansion L F Loree locomotive of 1933. None was successful.