Changes

'''5164''' is a '''GWR Collett 5101 class 2-6-2T 'Large Prairie''''. The 5101 Class was an updated version by CB Collett of Churchward's Large prairie tanks were a common sight on the GWR, with more than 300 built between 1903 3100/5100 Classand 1949 to the same basic design. Built from 1929 The locomotives were designed to 1949, these mediumhaul semi-sized tank engines were used all over the GWR network for fast and suburban and local passenger and local freight services. Their increased axle loading of 17 tons 12 cwt was the maximum permitted for [[GWR Power and Weight Classification | 'Blue' route availability]]to tight schedules, while their [[GWR Power and Weight Classification|power class]] was rated D (GWR) and 4MT (BR). A total of 140 were produced; after available numbers in the 51xx range were exhausted were exhausted, later examples were numbered in the 41xx rangealso used on medium distance freight services.

The 5101 Class was an updated version by CB Collett of Churchward's 1903 3100/5100 Class. Built from 1929 to 1949, these medium-sized tank engines were used all over the GWR network for suburban and local passenger and local freight services. Their increased axle loading of 17 tons 12 cwt was the maximum permitted for [[GWR Power and Weight Classification | 'Blue' route availability]], while their [[GWR Power and Weight Classification|power class]] was rated D (GWR) and 4MT (BR).  A total of 140 were produced; after available numbers in the 51xx range were exhausted, later examples were numbered in the 41xx range. The prevalence of the Large Prairie also resulted in examples numbered 61xx, 31xx and 81xx.<ref>[http://www.greatwestern.org.uk/m_in_262.htm Great Western Archive]</ref>This followed GWR practice, where more than 100 locomotives of one class were built, of maintaining the second number in the series and re-using older sequences of numbers where necessary.  A number of the class were allocated to the sheds at [[Worcester]], [[Kidderminster Shed|Kidderminster]], Stourbridge and [[Shrewsbury#Shrewsbury Shed|Shrewsbury]] from where they were [[Locomotives used on the Severn Valley Branch in commercial service|regularly used on the Severn Valley Branch]] on both freight and passenger services after the 1950s. Other examples from Wolverhampton Stafford Road and Tyseley were also seen on the Branch from time to time.<ref name=SVR20>SVR News 20</ref> Classmate 4175 was involved in the [[Level crossing at Hill Farm, Northwood Lane#Accidents in the BR Era|fatal accident at Northwood Lane level crossing]] in August 1964. The pictures below show classmates 4114 preparing to leave [[Bridgnorth]] with a passenger service for Shrewsbury in July 1959, 4175 with an Up goods at [[Bewdley]] in April 1962, and 4153 on the coaling road at Kidderminster Shed (undated). Other class members photographed in use on the branch include 4100 in 1955,<ref>[[Bibliography#Books|Mitchell and Smith (2007)]] fig. 98.</ref> and 4129<ref>SVR News 16, photo by Brian Moone)</ref>. The SVR's [[GWR Large Prairie 4150|4150]] is also a member of the class and having entered service at Stourbridge in 1947, may also have worked on the branch although no photographs are known to exist.