|The Bulletin concerned the 'performance and efficiency
testing' of a Western Region 'Hall' Class 2-cylinder 4-6-0 Mixed Traffic
Locomotive number 7916 'Mobberley Hall'. This loco had been built
by BR in 1950 and had run only 22,000 miles.
The tests were undertaken to establish the following:
Testing was undertaken on the static test plant at Swindon and on the line between Wantage Road and Stoke Gifford, a distance of approx 50 miles. The amount of coal and water used was carefully monitored, the tender coal space being divided such that weighed bags of coal for the test were emptied into a designated area such that the firemen could easily access the loose coal and ordinary loose coal for transit and shunting moves was available in the remainder of the coal space.
Here are a few pictures of the tests and a summary graph.
Pictures are credited where known
|No:7916 is put through its paces
on the static test plant at Swindon. Note the original GWR dynamometer car
in the background.
|No:7916 about to leave Wantage
Road on a test run with its 550 ton train. Note the original GWR dynamometer car behind the loco
and the indicator shelter built onto the buffer beam.
|The BR loco diagram for the Hall class|
|One of the many test results shows the maximum speed and HP of the loco amongst other things - note the maximum power of only approx. 700HP|
Back to Steam Performance page
Back to Home page