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 (NBL) for Indian Railways. The model name stands for Metre gauge (Y), Diesel (D), Mixed traffic (M) engine, 1st generation (1). 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.
| Indian locomotive class YDM-1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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A YDM-1 class locomotive no 6002 preserved at National Rail Museum, New Delhi | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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 As of January 2020, all 20 locomotives have been withdrawn from service with 3 locomotives being preserved at various location around India.
These locomotives originally called 'DY' class was imported from North British Locomotive Company (NBL) to haul goods and passenger rakes in Western Railways particularly around Gandhidham due to of scarcity of water for steam locomotives. 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 [12/99] from mainline service and As shunter in Ajmer on 15.02.2001. The loco ( numbered 6002) came at NRM from Wankaner in August 2003 after renovation at Ajmer Loco Workshop.
| 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, 625/580 hp replaced by Mak/CLW L6 6M 282 A(K), 700 hp |
| 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/- (Capital Head) |
| Remarks | Fitted with Automatic, Vacuum & Air Brake System |
| First Trip | From Gandhi Dham to Palanpur |
| Last Service | worked for Kandla Port and Naliya etc. |
A total of three YDM-1 locomotives have been preserved all over India.[1][2]
| Class | Manufacturer | Loco Number | Previous shed | Name | Livery | Location | ref |
|---|---|---|---|---|---|---|---|
| YDM-1 | NBL | 6002 | Gandhidham | Orange with twin black stripes | plinthed at National Railway Museum, Delhi (NRM) | [3] | |
| YDM-1R | NBL | 6008 | Gandhidham | Light blue/red/dark blue | Preserved at Regional Rail Museum, Chennai. | [4] | |
| YDM-1 | NBL | 6012 | Gandhidham | Navy blue with yellow stripe | Preserved at Regional Rail Museum, Chennai. | [5] | |
- Gandhidham (GIM): All the locomotives of this class has been withdrawn from service.
- "Ministry of Railways (Railway Board)". www.indianrailways.gov.in. Retrieved 2020-04-14.
