CIE 101 Class

Infobox Locomotive
name = Córas Iompair Éireann B class
(later 101 class)
powertype=Diesel-electric

---

caption = B class locomotive No. 103
builder = Birmingham Railway Carriage and Wagon Company
serialnumber=DEL20–DEL31
builddate = 1956–1957
gauge=RailGauge|1600|lk=on
totalproduction = 12
primemover = Sulzer 6LDA28
aspiration=Turbocharged
cylindercount=Straight 6
tractionmotors = Metropolitan Vickers MV137CW, 4 off
transmission = DC generator
DC traction motors
aarwheels=A1A-A1A
uicclass=(A1A)'(A1A)'
wheeldiameter=convert|952|mm|in|1|abbr=on
trucks=Modified Pennsylvania Railroad swing bolster bogies
locobrakes = Westinghouse straight air
trainbrakes = Vacuum
length = convert|14.50|m|ftin|abbr=on
width =
height = convert|3.93|m|ftin|abbr=on
weight = convert|76.6|t|lb|lk=on
topspeed = convert|120|km/h|abbr=on
poweroutput = convert|960|hp|abbr=on|lk=on at 710 rpm
tractiveeffort = convert|186|kN|lbf|abbr=on|lk=on (starting)
convert|76|kN|lbf|abbr=on at convert|26|km/h|abbr=on (continuous)
This allowed a 300 tonne train to be hauled without banking assistance on the 1:60 gradient outside Cork
fuelc
convert|3406|l|lk=on
railroad = Córas Iompair Éireann
railroadclass= B, later 101
roadnumber=B101–B112
retiredate=1969–1978
disposition=One preserved, eleven scrappedThe 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 960hp, with four Metropolitan-Vickers MV157 traction motors. They were of A1A-A1A wheel arrangement, weighed 75 tonnes and had a maximum speed of 120km/h (75mph).

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 Class 113 and the interminable breakdowns of the 001/201. 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 nought, 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. However, No. 103 survived and has been preserved by the Irish Traction Group at Carrick-on-Suir.

Model

A resin model was previously available from "Q Kits", but this company is no longer trading as the owner has retired.

External links

* [http://groups.msn.com/IrishRailwayTechnologyandinformation/_whatsnew.msnw Irish Railway Technology and Information -reporting on all aspects of irish railways]
* [http://www.irishtractiongroup.com/ITG_locos/loco_103.htm Irish Traction Group webpage for preserved 103]

*Sulzer engines from around the world

** [http://www.derbysulzers.com/cie.html CIE Derby Sulzers]

** [http://www.derbysulzers.com/Pic.html Other Derby Sulzers]