British Railway History Item
BR Class Riddles British Railways Standard Class 5 4-6-0
Built 1951-57. Designed by Robert A. Riddles.
Total Number Built 172.
Introduced 1951. Designed at Doncaster. Classification 5MT.
(a) 73125-73134, 73145-73154 Fitted with Caprotti valve gear and BR1B tender.
(b) 73135-73144 Fitted with Caprotti valve gear and BR1C tender.
(c) 73000-73049 BR1 Tender.
(d) 73080-73089, 73100-73109, 73120-73124, 73155-73171 BR1B Tender.
(e) 73065-73079, 73090-73099 BR1C Tender.
(f) 73050-73052 BR1G Tender.
(g) 73053-73064 BR1H Tender.
(h) 73110-73119 BR1F Tender.
Number Series 73000-73171.
Built at British Railway's Derby and Doncaster Works:
73000-73099, 73125-73154 Derby
73100-73124, 73155-73171 Doncaster
No Lot Nos. yet available.
Designed by Robert A Riddles and built at Derby and Doncaster, the Standard Class 5 was a very similar locomotive to the smaller Standard Class 4 in appearance, but with larger boiler and driving wheels. It followed largely in the footsteps of the successful Stanier LMS Class 5s built from 1934, but with many enhancements, such as roller bearings.
The first loco entered traffic in April 1951 and immediately proved itself a success. In all, some 172 were built between then and 1957 and were put to work on all regions of BR, although there were not many on the Eastern Region. The locos were paired with some six different tenders ranging from the BR1 of 49 tons 3 cwt, capacity 4,200 galls, to the BR1F of 55 tons 5 cwt, capacity 5,650 galls.
The initial allocation of locos on the Southern Region was put to work on the Kent Coast lines but when those routes were electrified many were transferred to work on the South Western section, mainly between London & Salisbury and London & Bournemouth. Locos allocated to both the Southern and Midland Regions could be found at times working the late-lamented 'Pines Express'.
In early 1959 it was decided to name 20 of the Southern Region Class 5s using names previously carried by withdrawn examples of the Urie 'King Arthur' Class. These locos, 73080-73089 and 73110-73119, were named between May 1959 and May 1961, and came to be known as 'Standard Arthurs'. 73116 'Iseult' was the first of these to be withdrawn in November 1964. 73085 'Melisande' and 73118 'King Leodegrance' survived until the end of steam on the Southern, being withdrawn in July 1967.
The first loco withdrawn was 73027 on 29 February 1964 from Swindon shed.
The last loco withdrawn was 73069 on 18 August 1968 from Carnforth shed.
Five locos are preserved - 73050, 73082, 73096, 73129 and 73156.
Motive Power Details
Weight: Loco 76 tons 4 cwt
49 tons 3 cwt BR1 4,200 gallons, 7 tons coal (c)
50 tons 5 cwt BR1B 4,725 gallons, 7 tons coal (d)
53 tons 5 cwt BR1C 4,725 gallons, 9 tons coal (e)
52 tons 10 cwt BR1G 5,000 gallons, 7 tons coal (f)
49 tons 3 cwt BR1H 4,250 gallons, 7 tons coal (g)
55 tons 5 cwt BR1F 5,625 gallons, 7 tons coal (h)
Driving Wheel: 6' 2"
Bogie Wheel: 3 ft
Cylinders: Two 19" x 28" (outside)
Walschaerts (piston valves)
Caprotti (poppet valve) (a)(b)
Length: 62 ft 7 ins
Route Availability: 7
TE: 26,120 lb
Class Total: 172
Allocation and Withdrawal Details
Last Updated : Monday 5th May 2003 11:31