CIE 421 Class

Córas Iompair Éireann E class
(later 421 class)

E421 and E432 in 2008

Type and origin
Power type	Diesel-hydraulic
Builder	CIÉ, Inchicore Works
Build date	1962
Total produced	14

Specifications
UIC class	C
Gauge	1,600 mm (5 ft 3 in)
Wheel diameter	3 ft 2 in (965 mm)
Length	9.56 m (31 ft 4 in)
Loco weight	43.5 tonnes (42.8 long tons; 48.0 short tons)
Prime mover	Maybach MD220
Engine type	Diesel
Transmission	Mekydro KL64U torque converter
MU working	Yes

Performance figures
Maximum speed	40 km/h (25 mph)
Power output	420 hp (310 kW)
Tractive effort	Starting: 26,700 lbf (119 kN)

Career
Operators	Córas Iompair Éireann
Numbers	E421–E434
First run	1962–63
Disposition	3 preserved, remainder scrapped

The Córas Iompair Éireann 421 Class was a railway locomotive, built by the CIÉ at Inchicore Works between 1962–1963 and designed for branch line traffic use and shunting.

The 421 Class was a larger development of the earlier 401 Class, and were fitted with a Maybach MD220 engine of 420 horsepower (310 kW) with diesel hydraulic transmission via a Mekydro KL64U torque converter. Unlike the earlier E401 class, these locomotives were fitted for multiple operation. They were of C wheel arrangement.

421 after an accident in 1962.

E421 At Downpatrick

The first of the class made its debut in early October 1962 on pilot duties in the Dublin area and although they had a design maximum speed of 100 km/h (62 mph), experience (notably the derailment of a trial train hauled by E421) showed that they did not ride well when travelling at speeds over 40 km/h (25 mph) and so henceforth were limited to that speed and used simply for shunting duties instead. They were numbered E421–E434, and were withdrawn from service between 1979 and 1983.

Three of these locomotives have been preserved, as follows:

E421 and E432: Owned by and based at the Downpatrick & County Down Railway, Northern Ireland.^[1] Both locos are currently stored out of traffic.
E428: has recently moved from Inchicore Works to Dunsandle, Co. Galway under private ownership.

Model

The 421 was available as a resin model from "Q Kits",^[2] but this company is no longer trading as the owner has retired.

References

Strickland, David C. (September 1983). Locomotive Directory. Camberley, Surrey: Diesel and Electric Group. p. 166. ISBN 0-906375-10-X.

External links

Wikimedia Commons has media related to CIÉ 421 Class.

Diesel locomotives of Ireland

Republic of Ireland	001 071 101 113 121 141 181 201 (I) 201 (II) 301 401 421 501 601 611 801

Northern Ireland	1 101 104 111 208

Diesel locomotives Multiple units

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