UTA 70 Class - History

History

Investment was needed on the “Inter City” routes and it was a straight choice between new locomotives and coaching stock or a new generation of multiple unit. The decision was made in favour of new multiple units and in 1966 the first of these entered service, designated 70 Class.

Unlike the MEDs and MPDs with their low - powered underfloor engines and mechanical transmissions spread through the train, the new units had a single English Electric engine of 550 horsepower (410 kW), fitted in a compartment between the driving cab and the passenger saloon, and electric transmission. Whilst construction was carried out at the UTA's York Road works in Belfast they imported underframes and body parts. This order comprised parts for the construction of eight power cars and the modification of existing coaches, The 70 Class were first introduced on the former Northern Counties Committee section but were later also worked cross-border trains.

Like the MPDs these units were also suitable for working freight services and regularly appeared on the CIÉ freight services to and from Derry.

The 70s were numbered as follows:

• Power Cars 71 to 78.

Each power car was named after Northern Irish rivers in October 1970. The names are as follows:

The original trailer cars were as follows:

• 548 Buffet car (dual cables for MPD+70)
• 550 Buffet car (converted from MPD car)
• 701 Brake First
• 702 Brake Composite
• 703 Brake Standard
• 711 Driving Brake Compostite
• 712 Driving Brake Compostite
• 721 to 725 Standard

In 1968–1969 more trailers were added.

• 554 Buffet car (dual cables for AEC+70) withdrawn in 1970
• 713 and 714 Driving Brake Standard
• 726 and 727 Standard

The power cars' interiors were rebuilt between 1976 and 1979. During the same period 711 to 714 and 726 were rebuilt from side corridor to open layout.

Trailer 728 (brake Standard) was rebuilt in 1976 from MPD driving trailer 534

In 1977 701 and 703 were rebuilt as Driving Brake Standard open.

It was decided in 1983 that the 70 Class railcars would be replaced, No. 78 had already been withdrawn in 1978 after just 10 years of service after being bombed by the IRA. No. 76 was withdrawn in 1984 and the remaining units followed in 1985–1986. The last set in service was a five car set operated by power cars no. 75 and 77 the 5 car set spent its last days on the londonderry and portrush lines until Both were withdrawn on the 1st of April 1986. For the new units, and after heavy refurbishment, engines, generators and traction motors were recovered as the 70s were withdrawn for re-use in the new 450 class. After withdrawal, it was discovered that the power cars contained blue asbestos, so they were sent to Crosshill quarry, Crumlin along with other NIR stock and even some CIE stock for disposal. They were put into a flooded part of the quarry, since water dampens asbestos meaning that no loose fibers could escape from their structures. Most of the under frames were kept for use as flatbeds. most of their lives the 70 class worked on the londonderry line they were also the last wooden boodyied railway coaches in regular passagner service in ireland most of the coaches dated from the 1920s and 30s=Preservation== Buffet Car 550 entered preservation in 1978 with the Railway Preservation Society of Ireland, whereupon it regained its original UTA number, 87, and was pained in LMS NCC livery. Intermediate trailer no. 728 lay at York Road until 1991, and is now at the Downpatrick and Country Down railway. Driving trailer no. 713 was also preserved at Downpatrick but was sadly destroyed by fire in 2002.