S&DJR Sentinels

Specifications
Specifications
Configuration:;
• Whyte	0-4-0 vbt
• UIC	B n4t
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Loco weight	27 long tons 15 cwt (62,200 lb or 28.2 t)
Fuel type	Coal
Boiler pressure	275 lb/in2 (1.90 MPa)
Cylinders	Four
Cylinder size	6+3⁄4 in × 9 in (171 mm × 229 mm)
Valve type	Poppet valves

Type and origin
Type and origin
Power type	Steam (geared)
Builder	Sentinel Waggon Works
Serial number	7587–7588
Model	200 hp industrial
Build date	1929

S&DJR Sentinels
S&DJR Sentinels
Power type
Type and origin
Power type	Steam (geared)
Builder	Sentinel Waggon Works
Serial number	7587–7588
Model	200 hp industrial
Build date	1929
Configuration:;
Specifications
Configuration:;
• Whyte	0-4-0 vbt
• UIC	B n4t
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Loco weight	27 long tons 15 cwt (62,200 lb or 28.2 t)
Fuel type	Coal
Boiler pressure	275 lb/in2 (1.90 MPa)
Cylinders	Four
Cylinder size	6+3⁄4 in × 9 in (171 mm × 229 mm)
Valve type	Poppet valves
Power output
Performance figures
Power output	200 hp (150 kW)
Tractive effort	15,500 lbf (68.9 kN)
Operators
Career
Operators	Somerset and Dorset Joint Railway; → London Midland and Scottish Railway; → British Railways;
Number in class	2
Numbers	S&DJR: 101–102; LMS: 7190–7191; BR 47190–47191;
Withdrawn	1961, 1959
Disposition	Both scrapped

The Somerset and Dorset Joint Railway (S&DJR) Sentinel locomotives were two small vertical-boilered, chain-driven steam locomotives for shunting. They were built by Sentinel Waggon Works, who also produced similar designs for industrial customers.

Service[]

The two locomotives were both built in 1929 and given the S&DJR numbers 101 and 102. The locomotives replaced three older Highbridge-built saddle tanks, 24A, 25A and 45A. They were both used for shunting coal wagons on the colliery branchlines around Radstock. They were built to a reduced loading gauge as they had to pass under the Tyning Arch which had only 10 feet 10 inches (3.30 m) clearance.

They were taken into London, Midland and Scottish Railway (LMS) stock in 1930 and renumbered 7190–7191. After nationalisation in 1948, they became 47190–47191 under British Railways. 47191 was withdrawn in 1959 from Bath Green Park and 47190 in 1961 from Bristol (Barrow Road). Both were scrapped.

Preservation[]

Sentinel Loco 7109 being restored at Midsomer Norton in November 2013

Neither of the Radstock Sentinels survived into preservation. However, a similar locomotive, former Croydon Gasworks No. 37 Joyce, originally built in 1927 (works No. 7109), is under restoration at the Somerset & Dorset Railway Heritage Trust at Midsomer Norton railway station.^[1]

References[]

^ Andy Chapman. "Sentinel Steam Loco 7109: 7109 Restoration". Sentinel7109.blogspot.com. Retrieved 6 August 2012.

Anon. (1959). ABC of British Railway locomotives (combined volume). Ian Allan Limited. p. 95.

External links[]

Railuk database

[1] Andy Chapman. "Sentinel Steam Loco 7109: 7109 Restoration". Sentinel7109.blogspot.com. Retrieved 6 August 2012.

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