Indian locomotive class ZDM-2

Narrow gauge diesel hydraulic locomotives

Indian locomotive class ZDM-2

| Type and origin

Power type| Diesel-hydraulic
Builder| Maschinenbau Kiel
Serial number| 600478–600502
Model| MaK G 700 BB
Build date| 1964–January 1965
Total produced| 25
Rebuild date| 1980s–1990s
| Specifications

Configuration:
| ​
• UIC| B′B′
Gauge| 762 mm (2 ft 6 in)
Wheel diameter| 700 mm (27.6 in)
Minimum curve| 30 m (98.4 ft)
Length:
| ​
• Over couplers| 10,250 mm (404 in)
Width| 2,260 mm (89.0 in)
Height| 3,180 mm (125 in)
Service weight| 32 t (31 long tons; 35 short tons)
Prime mover| Maybach MD 435
RPM:| ​
• Maximum RPM|

* 1400 min⁻¹
* 1700 min⁻¹

| Performance figures

Maximum speed| 50 km/h (31 mph)
Power output|

* 650 PS (478 kW)
* 700 PS (515 kW)

| Career

Operators| Indian Railways
Numbers| 123–147

The Indian locomotive class ZDM-2 is a series of narrow gauge diesel-hydraulic locomotives built for Indian Railways by the German company Maschinenbau Kiel. In the 1980s and 1990s, several of the type were fitted with KPC engines, these were reclassified as the ZDM-2R.

## History

[edit]

The ZDM-2 class was designed and manufactured by Maschinenbau Kiel (MaK). The type was specially developed for the Indian 762 mm railway lines.[1] Locomotive No 600488 was tested on the Kreisbahn Osterode-Kreiensen 750 mm gauge railway line before delivery.[2][3] The class was initially used on the Kalka–Shimla Railway and the Kangra Valley Railway, then later in Nagpur.[4] On the Kalka-Shimla line, ten ZDM-2 locomotives partly replaced the ageing steam locomotives and partly the inefficient and failure-prone ZDM-1 diesel locomotives for passenger transport. On the Kalka–Shimla line, ZDM-1 locomotives pulled only three passenger coaches, while ZDM-2 locomotives often pulled seven.[1] The ZDM-2 and ZDM-1 locomotives that remained on the line were completely replaced by ten ZDM-3 locomotives delivered between 1970 and 1972, the former being transferred to the South Eastern Railway in 1971–1972 and the latter to the Matheran Hill Railway in 1976.[1][5] The ZDM-2s were fitted with a hydraulic transmission of the Indian "Suri" type, which proved to be highly failure-prone.[4] The series was equipped with the Maybach "MD 435" diesel engine.[4][2] On the first ten units these operated at the speed of 1400 min⁻¹ for a power output of 650 metric horsepower (478 kW), while on the latter fifteen at 1700 min⁻¹ for a power output of 700 metric horsepower (515 kW).[2]

Several members of the type were modified in the 1980s and 1990s; they were fitted with KPC hydraulic transmissions and MaK diesel engines.[4][6]

## Locomotive list

[edit]

List of MaK G 700 BB locomotives[1]

Serial number  | Year of production  | Operating number  | Operator  | Notes
600478[7] | 1964  | 123  | 1964–1971/72: NR, 1971/72–?: SER  | Scrapped
600479[8] | 124
600480[9] | 125
600481[10] | 126
600482[11] | 127
600483[12] | 128
600484[13] | 129
600485[14] | 130
600486[15] | 131
600487[16] | 1965  | 132  | 1965–1971/72: NR, 1971/72–?: SER  | In the 1980s or 1990s, it received a new transmission and engine. Preserved at the Jamalpur Locomotive Workshop[17]
600488[3] | 1964  | 133  | SER  | It was tested on the Kreisbahn Osterode-Kreiensen before being delivered. In the 1980s or 1990s, it received a new transmission and engine. Scrapped[18]
600489[19] | 134  | Scrapped
600490[20] | 135
600491[21] | 1964  | 136  | SER  | Plinthed at Nagpur Narrow Gauge Rail Museum[22]
600492[23] | 1964  | 137  | SER  | Scrapped
600493[24] | 138
600494[25] | 139  | In the 1980s or 1990s, it received a new transmission and engine. Scrapped[26][27]
600495[28] | 140
600496[29] | 141  | Scrapped
600497[30] | 142
600498[31] | 143
600499[32] | 144
600500[33] | 145
600501[34] | 146  | In the 1980s or 1990s, it received a new transmission and engine. Scrapped[35]
600502[36] | 147  | Scrapped

## References

[edit]

1. ^ a b c d Hughes, Hugh. Indian Locomotives: Part 4 - 1941–1990. Kenton, London: The Continental Railway Circle. pp. 72–73\. ISBN 0 9521655 1 1.
2. ^ a b c "MaK - G 700 BB für die Indian Railways (IR)". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
3. ^ a b "Fahrzeugportrait MaK 600488". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
4. ^ a b c d "ZDM-2". IRFCA.org. Retrieved 2023-12-10.
5. ^ Wallace, Richard (2021-02-22). "The Kalka–Shimla Railway". Hill Railways of the Indian Subcontinent. Ramsbury: The Crowood Press Ltd. pp. 232–233\. ISBN 978-1785008085.
6. ^ "All Locos". IRFCA.org. Retrieved 2023-12-10.
7. ^ "Fahrzeugportrait MaK 600478". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
8. ^ "Fahrzeugportrait MaK 600479". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
9. ^ "Fahrzeugportrait MaK 600480". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
10. ^ "Fahrzeugportrait MaK 600481". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
11. ^ "Fahrzeugportrait MaK 600482". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
12. ^ "Fahrzeugportrait MaK 600483". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
13. ^ "Fahrzeugportrait MaK 600484". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
14. ^ "Fahrzeugportrait MaK 600485". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
15. ^ "Fahrzeugportrait MaK 600486". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
16. ^ "Fahrzeugportrait MaK 600487". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
17. ^ "ZDM-2 132". IRFCA.org. Retrieved 2023-12-10.
18. ^ "ZDM-2 133". IRFCA.org. Retrieved 2023-12-10.
19. ^ "Fahrzeugportrait MaK 600489". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
20. ^ "Fahrzeugportrait MaK 600490". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
21. ^ "Fahrzeugportrait MaK 600491". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
22. ^ "ZDM-2 136". IRFCA.org. Retrieved 2023-12-10.
23. ^ "Fahrzeugportrait MaK 600492". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
24. ^ "Fahrzeugportrait MaK 600493". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
25. ^ "Fahrzeugportrait MaK 600494". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
26. ^ "ZDM-2 139". IRFCA.org. Retrieved 2023-12-10.
27. ^ "ZDM-2 140". IRFCA.org. Retrieved 2023-12-10.
28. ^ "Fahrzeugportrait MaK 600495". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
29. ^ "Fahrzeugportrait MaK 600496". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
30. ^ "Fahrzeugportrait MaK 600497". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
31. ^ "Fahrzeugportrait MaK 600498". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
32. ^ "Fahrzeugportrait MaK 600499". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
33. ^ "Fahrzeugportrait MaK 600500". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
34. ^ "Fahrzeugportrait MaK 600501". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.
35. ^ "ZDM-2 146". IRFCA.org. Retrieved 2023-12-10.
36. ^ "Fahrzeugportrait MaK 600502". loks-aus-kiel.de (in German). Lok-Datenbank.de. Retrieved 2023-12-10.

* v
* t
* e

Narrow-gauge locomotives of India

Steam (2 ft 6 in (762 mm))|

| Barsi Light Railway|

* A
* B
* C
* D
* E
* F
* G

|

IRS designs|

* ZA
* ZB
* ZC
* ZD
* ZE
* ZF

Steam (2 ft (610 mm))|

| Darjeeling Himalayan Railway|

* A
* B (778)
* C
* D

|

Matheran Light Railway|

* MLR 1-4

IRS designs|

* QA
* QB
* QC

Diesel (2 ft 6 in (762 mm))|

* ZDM-1
* ZDM-2
* ZDM-3
* ZDM-4
* ZDM-5

Diesel (2 ft (610 mm))|

* NDM-1
* NDM-2
* NDM-3
* NDM-4
* NDM-5
* NDM-6

Battery (2 ft (610 mm))|

* NBM-1

* v
* t
* e

MaK/VSFT/Vossloh Kiel locomotives

1st generation
1954–1967|

* 240 B
* 240 C
* 400C
* 450 C
* 600 D
* 650 D
* 800 D
* 850 D
* 1000 D
* 1200 D

2nd generation
1965–1978|

* G 320 B
* G 500 C
* G 700 C
* G 850 BB
* G 1100 BB

3rd generation
1977–2016|

| Light shunters|

* G 321 B
* G 322
* G 761 C
* G 762 C
* G 763 C
* G 764 C
* G 765
* DE 501
* DE 502

|

Heavy shunters/Light locomotives|

* G 1201 BB
* G 1202 BB
* G 1203 BB
* G 1204 BB
* G 1205
* G 1206/G 1206-2
* DE 1002
* DE 1003
* DE 1004

4th generation
2001–2016|

| Light shunters|

* G 400 B

|

Heavy shunters/Light locomotives|

* G 800 BB
* G 1000 BB
* G 1700 BB

Line locomotives|

* G 2000 BB

5th generation
2008–present|

| Light shunters|

* G 6

|

Heavy shunters/Light locomotives|

* G 12
* DE 12
* G 18
* DE 18

6th generation
2022–present|

* Modula

Export builds|

* TCDD DH33100
* SJ T21
* SJ Tp / T23
* Indian WDS-3
* Indian ZDM-2
* NS 6400
* Eurotunnel 0001
* British Rail 21
* NSB Di 6 / Dispolok ME 26
* NSB Di 8
* SNCB HLD 77
* SNCF BB 61000

and  locomotives|

* V 60 / 360–365
* V 65
* V 80
* V 90 / 290–296
* V 100 / 211–214
* TCDD DH11500
* V 160
* V 200 / 220–221

Experimental locomotives and rebuilts|

* DE 1024 / DB 240
* DH 1004
* DH 1504

Locomotive types in italics are in production. G-type locomotives have diesel-hydraulic transmissions, DE-type locomotives have diesel-electric transmissions.
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