# GS&WR Class 500

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The **[Great Southern and Western Railway](/source/Great_Southern_and_Western_Railway) (GS&WR) Class 500** were [4-6-0](/source/4-6-0) locomotives intended for [mixed-traffic](/source/Mixed-traffic_locomotive) work. The lead member of the class was built in 1924 under the [GS&WR](/source/GS%26WR), the remaining two in 1926 under the amalgamated grouping of the [Great Southern Railways](/source/Great_Southern_Railways) (GSR).[2]: 245—246

## Design

The locomotive was designed by J. R. Bazin who sought to avoid some issues with the unrebuilt [GS&WR 400 Class](/source/GS%26WR_400_Class) and was aimed at being a [mixed-traffic](/source/Mixed-traffic) type. Use of a valve travel of 6+3⁄4 inches (170 mm) and a 1+1⁄2 inches (38 mm) lap was a significant contributor to the performance of the type. The boiler was interchangeable with the existing [GS&WR 400 Class](/source/GS%26WR_400_Class). [2]: 245—246

## Service

Although a mixed-traffic type the engines could and were often used on passenger services which were the domain of the [GS&WR 400 Class](/source/GS%26WR_400_Class). It was pointed out in a 1948 report their smaller wheels made them unsuitable for that work and they should be allocated to goods and night mails.[2]: 245—246

## Livery

The locomotives were painted in Standard GS&WR/GSR Livery.

## Model

A model by C.R.H Wilson at 1:8 [scale ratio](/source/Scale_ratio) was held by the [Thinktank](/source/Thinktank,_Birmingham_Science_Museum) museum in [Birmingham](/source/Birmingham), United Kingdom. As of 2008 it was not on display. Construction for the model began in 1929 and took over 10 years. Whilst capable of [live steam](/source/Live_steam) it is understood not to have been steamed because of the extreme detailing of the model for the period. There is a story Wilson chose this locomotive as only Bazin was prepared to provide him with drawings of the required detail, whilst other railway companies in the United Kingdom were not prepared to do so.[2]: 380

## References

1. Boocock, Colin (1 October 2009). *"Locomotive Compendium Ireland"*. 1st ed. Ian Allan. p. 14. ISBN 9780711033603.

1. Clements, Jeremy & McMahon, Michael (2008). *Locomotives of the GSR*. Colourpoint Books. ISBN 9781906578268.

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Adapted from the Wikipedia article [GS&WR Class 500](https://en.wikipedia.org/wiki/GS%26WR_Class_500) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/GS%26WR_Class_500?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.