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Difference from prior major
revision.
minor diff author diff hide diffA US design of bogie, dating from the late 19th century and still popular, where
the primary suspension is arranged by attaching a longitudinal steel bar to each
pair of axle boxes and depositing the bogie frame onto a pair of coil springs
resting on the bar. It gained favthe in the UK during the 1950s and 60s where it
was known as the [[Commonwealth]] bogie, [[Commonwealth_bogie]], a USA design
originally manufactured by the Commonwealth Steel Co. The UK version made by the
English Steel Casting Co was built under license. It is a simple and reliable
design but its main disadvantage is its high weight.