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Specifications
Specifications
Configuration:;
• AAR	A1A-A1A
• UIC	(A1A)(A1A)
Gauge	1,600 mm (5 ft 3 in)
Bogies	Modified Pennsylvania Railroad swing bolster bogies[citation needed]
Wheel diameter	952 mm (37.5 in)
Length	14.50 m (47 ft 7 in)
Height	3.93 m (12 ft 11 in)
Loco weight	76.6 tonnes (75.4 long tons; 84.4 short tons)
Fuel capacity	3,406 litres (749 imp gal; 900 US gal)
Prime mover	Sulzer 6LDA28
Engine type	Straight 6
Aspiration	Turbocharged
Generator	DC
Traction motors	Metropolitan Vickers MV137, 4 off
Cylinders	6
Transmission	diesel electric
Loco brake	Westinghouse straight air
Train brakes	Vacuum

Type and origin
Type and origin
Power type	Diesel–electric
Builder	Birmingham Railway Carriage and Wagon Company
Serial number	DEL20–DEL31
Build date	1956–1957
Total produced	12

Córas Iompair Éireann B class
(later 101 class)
Córas Iompair Éireann B class; (later 101 class)
	B class locomotive No. 103
Power type
Type and origin
Power type	Diesel–electric
Builder	Birmingham Railway Carriage and Wagon Company
Serial number	DEL20–DEL31
Build date	1956–1957
Total produced	12
Configuration:;
Specifications
Configuration:;
• AAR	A1A-A1A
• UIC	(A1A)(A1A)
Gauge	1,600 mm (5 ft 3 in)
Bogies	Modified Pennsylvania Railroad swing bolster bogies[citation needed]
Wheel diameter	952 mm (37.5 in)
Length	14.50 m (47 ft 7 in)
Height	3.93 m (12 ft 11 in)
Loco weight	76.6 tonnes (75.4 long tons; 84.4 short tons)
Fuel capacity	3,406 litres (749 imp gal; 900 US gal)
Prime mover	Sulzer 6LDA28
Engine type	Straight 6
Aspiration	Turbocharged
Generator	DC
Traction motors	Metropolitan Vickers MV137, 4 off
Cylinders	6
Transmission	diesel electric
Loco brake	Westinghouse straight air
Train brakes	Vacuum
Maximum speed
Performance figures
Maximum speed	120 km/h (75 mph)
Power output	960 hp (720 kW) at 710 rpm
Tractive effort	186 kN (42,000 lbf) (starting); 76 kN (17,000 lbf) at 26 km/h (16 mph) (continuous); This allowed a 300-tonne (300-long-ton; 330-short-ton) train to be hauled without banking assistance on the 1:60 (1.67%) gradient outside Cork
Operators
Career
Operators	Córas Iompair Éireann
Class	B, later 101
Numbers	B101–B112
Withdrawn	1969–1978
Disposition	One preserved, remainder scrapped

The Córas Iompair Éireann 101 Class locomotives, numbered B101-B112, were built in 1956 by the Birmingham Railway Carriage and Wagon Company. They were fitted with Sulzer 6LDA28 engines of 960 hp (720 kW), with four Metropolitan-Vickers MV137 traction motors. They were of A1A-A1A wheel arrangement, weighed 75 tonnes and had a maximum speed of 120 km/h (75 mph).

History

With their design, size and axle loading, they were intended for mixed traffic duties, hauling both freight and passenger trains. They found regular use primarily on the Waterford-Mallow-Tralee line and also on the Tralee-Newcastle West-Limerick line. Given that they were the first main group of diesel locos used in Ireland, they proved very successful and quickly gained a reputation for comfort and reliability by contrast to the poor cab conditions and suspension rocking of the 113 Class and the interminable breakdowns of the A Class and C Class locomotives. However, during the 1960s many of the secondary lines that they were used on were closed and following the arrival of the 181 Class, the 101s were relegated to goods, permanent way and pilot duties.

The first withdrawal took place in 1969 (B111), and the last in February 1978 (B106). A proposal to re-engine them in the light of similar refurbishments of the Class 001 and Class 201 came to nothing, and the decision was taken to order new locomotives in the form of the 071 Class instead.

After withdrawal, the entire class was lined up together with the two 113 Class locomotives to form a sound barrier around Inchicore Works. Official withdrawal of the class came in April 1984, and the majority were scrapped between December 1986 and March 1987.

Preservation

One locomotive, No. 103 survived and has been preserved by the Irish Traction Group, and is currently in storage at Carrick-on-Suir railway station. It was purchased by the group in 1993 directly from Iarnród Éireann and is awaiting eventual restoration.^[1]

Model

A resin OO gauge model kit is available from Studio Scale Models, with etched brass/whitemetal detailing and a selection of decals to cover various liveries.

References

^ "B103". Irish Traction Group Website. Archived from the original on 11 December 2008. Retrieved 15 January 2009.

Strickland, David C. (September 1983). Locomotive Directory: Every Single One There Has Ever Been. Camberley: Diesel and Electric Group. p. 165. ISBN 978-0-906375-10-5. OCLC 16601890. OL 27959920M. Wikidata Q105978499.