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
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)
Operators Córas Iompair Éireann
Numbers E421–E434
First run 1962–1963
Withdrawn 1979–1983
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 They were numbered E421–E434, and were withdrawn from service between 1979 and 1983.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:


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


Wikimedia Commons has media related to CIÉ 421 Class.
This article is issued from Wikipedia - version of the 6/14/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.