Modelling a heritage railway offers several unique advantages that make it a rewarding project.Nostalgia and...
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What are the advantages of modelling a heritage railway?Read more -
How did train drivers read semaphore signals at night?Read moreSemaphore signals were a common form of railway signalling before the advent of modern electronic signals. During the...
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How do I know if my paint is too old?Read moreIf like most modellers, you have an abundance of used model paints lying around, you will be familiar with the pang...
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What is a B4 bogie?Read moreBogies are an independent framework that supports the wheelsets on a railway locomotive, coach or some larger wagons....
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Do I need to apply a camber to a tight curve of track on my layout?Read moreApplying a camber to a tight curve of track on your model railway layout can help improve the realism and operation...
What is a B4 bogie?
Bogies are an independent framework that supports the wheelsets on a railway locomotive, coach or some larger wagons. The B4 bogie was a type introduced in 1963 to replace the earlier Commonwealth bogie design. The B4 weighs in at just 5 long tons thanks to its fabricated steel design making it 1.5 long tons lighter than its cast-steel predecessor, another advancement was the introduction of double coil-springs per wheel compared to the single spring design of the Commonwealth bogie.
The B4 bogie was introduced in time for the production of the Mk2 coach on which they were fitted from new. They were also retrofitted to some Mk1 coaches and a heavier version classed as a B5 bogie was produced for Mk1 based Southern EMUs and the heavy end only (kitchen end) of some restaurant coaches. The B4 had a speed rating of 100mph, however, some were uprated to 110mph subject to more stringent maintenance schedules.
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