Indian locomotive class YDM-2

Class of diesel-Hydraulic locomotive

| Type and origin

Power type| Diesel
Designer| Chittaranjan Locomotive Works
Builder| Chittaranjan Locomotive Works
Build date| 1986–1990
Total produced| 41
| Specifications

Configuration:
| ​
• AAR| B'-B'
• UIC| B-B
• Commonwealth| Bo-Bo
Gauge| 1,000 mm (3 ft 3+3⁄8 in) metre gauge
Loco weight| 41,000 kg (90,000 lb)
Power supply| 110 V DC supply
Transmission| Diesel-Hydraulic
Loco brake| Air brake
Train brakes| Vacuum brake
| Performance figures

Maximum speed| 75 km/h (47 mph)
Power output| 700 hp (520 kW)
Tractive effort| 14.400 t (14 long tons; 16 short tons)
| Career

Numbers| 2001-2041
Disposition| Retired

The Indian locomotive class YDM-2 is a class of diesel-Hydraulic locomotive that was developed in 1986-90 by Chittaranjan Locomotive Works for Indian Railways. The model name stands for Metre gauge (Y), Diesel (D), Mixed traffic (M) engine, 2nd generation (2). They entered service in 1986. A total of 41 YDM-2 locomotives was built between 1986 and 1990.

## History

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The history of YDM-2 begins in the early 1980s with the stated aim of the Indian Railways to remove steam locomotives from Indian rails after recommendation of Karnail Singh Fuel Committee.[1] Therefore, required building a large number of Meter gauge diesel locomotives. Thus Indian Railways began looking at various diesel-electric designs. These locomotives were designed by CLW[2][3] for hauling both passenger and freight traffic. They used suri transmission similar to one used in the broad gauged WDM-3. 41 of these locomotives were built and they were initially homed at Moula Ali (MLY) diesel loco shed in Southern Central Railways division (SCR). After Moula Ali line was converted to Broad gauge, these locomotives were transferred to Golden rock(GOC) shed in the Southern Railway Zone. They hauled passenger and goods trains till the late 2000s when the meter gauge lines were converted to broad gauge. All units are now withdrawn from service and all units are believed to be scrapped.

## Former sheds

[edit]

* Moula Ali (MLY)
* Golden Rock (GOC)
* All the locomotives of this class have been withdrawn from service.

## See also

[edit]

* Indian locomotive class YDM-4
* Indian locomotive class WDM-3
* Locomotives of India

## References

[edit]

1. ^ "Report of the expert Committee on Coal Consumption on Railways, 1958". INDIAN CULTURE. Retrieved 2020-04-29.
2. ^ [IRFCA] Indian Railways FAQ: Locomotives – Specific classes : Meter Gauge & Narrow Gauge Diesel
3. ^ [IRFCA] Indian Railways FAQ: Diesel and Electric Locomotive Specifications

## External links

[edit]

* v
* t
* e

Metre-gauge locomotives of India

Steam|

| Company designs|

Nilgiri Mountain Railway X class

|

BESA designs|

* P
* M
* G
* T

IRS designs|

* YA
* YB
* YC
* YD
* YE
* YF
* YK
* YT

World War II designs|

* Class MAWD: 2-8-2
* Class MWGX: 4-6-2+2-6-4 Garratt

IR standard designs|

* YG
* YL
* YM
* YP

Diesel|

| Mixed type|

* YDM-1
* YDM-2
* YDM-3
* YDM-4/4A
* YDM-5

|

DC electric|

| Goods|

* YCG-1

|

AC electric|

| Mixed type|

* YAM-1

|

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