Indian locomotive class YDM-1
The Indian locomotive class YDM-1 is a class of diesel-Hydraulic locomotive that was developed in 1954 by North British Locomotive Company for Indian Railways. The model name stands for Metre gauge, Diesel, Mixed traffic engine, 1st generation. They entered service in 1955. A total of 20 YDM-1 locomotives was built between 1954 and 1956, which made them among the first MG main-line diesels.
The YDM-1 served both passenger and freight trains for over 46 years. As of January 2020, all 20 locomotives have been withdrawn from service with 3 locomotives being preserved at various location around India.
History
These locomotives originally called 'DY' class was imported from North British Locomotive Company to haul goods and passenger rakes in Western Railways particularly around Gandhidham due to of scarcity of water for steam locos.These are among the first Metre Gauge main-line diesels locomotives of India.The YDM-1 class locomotives are the survivors from the second batch of North British diesel locos supplied in 1955.They were homed at a specifically made Diesel shed in Gandhidham. CLW replaced the engines on these with Maybach engines around 1975. Western Railways phased these locos out in the end of the 1990s from mailine service and As shunter in Ajmer on 15.02.2001. The loco came at NRM from Wankaner in August 2003 after renovation at Ajmer Loco Workshop.
Specification
| Original No | No 3001 to 3020 |
| Maker's Name & No | North British; Locomotive Co. Glasgow, UK, 27507 |
| Builders | North British Locomotive |
| Engine | Paxman V12 RPHXL II, 625/580hp replaced by Mak/CLW L6 6M 282 A, 700hp |
| Transmission | Voith hydraulic with Cardan shaft drive to bogies |
| Year Built | 1954 |
| Gear Box | David Brown, UK |
| Wheel Arrangement | B-B |
| Hauling Power | 10,977 kg |
| Tare Weight | 42 Tonnes |
| Gauge | 1 Metre |
| Cost | Rs. 4,85,209/- |
| Remarks | Fitted with Automatic, Vacuum & Air Brake System |
| First Trip | From Gandhi Dham to Palanpur |
| Last Service | worked for Kandla Port and Naliya etc. |
Preserved Examples
A total of three YDM-1 locomotives have been preserved all over India.Former shed
- Gandhidham : All the locomotives of this class has been withdrawn from service.