Poly fibre is a synthetic material commonly used in scale modelling and model railway landscapes to create realistic...
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What is poly fibre?Read more -
How do I model realistic burnt wood?Read moreTo achieve convincingly scorched, blackened textures on fire-damaged structures, the techniques involved can seem...
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Where would I typically locate a water tower on my layout?Read moreA water tower is an essential feature of any model railway layout, as it serves a practical purpose in the real...
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What is a Seafire aircraft?Read moreIn essence, a Seafire aeroplane is the same as a Spitfire, but with different adaptions to enable landing on aircraft...
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What is the most popular historical era for model railway layouts in the UK?Read moreWhen it comes to historical eras for model railway layouts in the UK, there are several popular choices. However, one...
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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