Class 121 (CIE) Profile and Models

The Class 121 locomotives were produced by General Motors for use on the Irish railway network. The design is of a typical American-style single cab "road switcher" and was very different to other Irish diesels of the time. Due to poor visibility, the locomotives were often operated with the cab leading and in later years, they were converted to allow multiple working with two locomotives coupled nose to nose, like the British Rail Class 20s. The locomotives were heavily used on passenger services, with some modified for use with BR Mk3-based push-pull train units. The 121s also saw use a shunters and on maintenance trains in their twilight years.

(Information provided by Wikipedia)

Type of Locomotive

Builder

Build Dates

Total Built

Tractive Effort

Power Output

Top Speed

Wheel Configuration

Operated By

Main Duties

In Service Until

Surviving Examples