Odakyu 9000 series

The Odakyu 9000 series (小田急9000形, Odakyū 9000-gata) was a commuter electric multiple unit (EMU) train type operated by the private railway operator Odakyu Electric Railway in Japan from 1972 until 2006.

Odakyu 9000 series
A 9000 series train in May 2004
In service	1972–2006
Manufacturer	Tokyu Car, Kawasaki Heavy Industries
Constructed	1972–1977
Scrapped	2005–2006
Number built	90 vehicles (18 sets)
Number in service	None
Number preserved	1 vehicle
Formation	4 / 6 cars per set
Operator(s)	Odakyu Electric Railway
Specifications
Width	2,870 mm (9 ft 5 in)
Doors	4 pairs per side
Maximum speed	100 km/h (service) 120 km/h (design)
Traction system	Mitsubishi-made resistor control with field chopper control (thyristor switching device[1]), controlled by electric camshaft. 11 steps in series, 8 steps in parallel, field weakening (chopper-controlled), 19 steps for dynamic braking and 11 steps for regenerative braking[2]
Traction motors	Mitsubishi-made DC compound motor
Power output	110 kW x4 per motored car
Electric system(s)	1,500 V DC overhead lines
Current collection method	Pantograph
Bogies	FS085, FS385[3]
Braking system(s)	Regenerative braking, dynamic braking
Multiple working	2600/4000I/5000I/8000/1000/3000 series[4]
Track gauge	1,067 mm (3 ft 6 in)

Technical specifications

The trains were equipped with 110 kW motors and chopper control.[5]

Formations

The fleet consisted of nine four-car and nine six-car sets.[6] The sets were formed as follows.[7]

Four-car sets

Designation	M1c	M1	M2	M2c
Numbering	9000	9100	9200	9300

Six-car sets

Designation	M1c	M2	T1	T2	M1	M2c
Numbering	9400	9500	9550	9650	9600	9700

History

The trains entered service in 1972, and were the recipient of the 1973 Laurel Prize.[8] Chiyoda Line through services with 9000 series trains began on March 31, 1978.[7] The trains were withdrawn from service in March 2006.[6] A farewell run between Hadano and Karakida was operated on May 13, 2006.[7]

• 
  Laurel Prize 1973 plaque
• 
  First Odakyu and Chiyoda Line through-services on March 31, 1978
• 
  9000 series (left) with "Sayonara" headboard on May 13, 2006

Preserved examples

• Deha 9001: stored at the Kitami inspection facility[5]

Derivatives

Trains of a similar design operate on the Roca Line in Argentina.

References

1. "小田急車両のすべて" [All About ODAKYU's Electric Cars]. June 1, 1996.
2. http://bikke.o.oo7.jp/tetsu/odakyu/odc09000.htm
3. "FS385　FS085 ／ 小田急電鉄9000形" [FS385 FS085 / Odakyu Electric Railway 9000 series]. rail.hobidas.com. Neko Publishing. May 15, 2006. Archived from the original on November 21, 2019. Retrieved November 28, 2019.
4. http://odapedia.org/archives/1979787.html
5. Ubukata, Yoshio; Kazuhide, Onuma (2014). 小田急通勤型電車のあゆみ [Odakyu commuter train history] (in Japanese). Jtb Publishing. pp. 64–68. ISBN 9784533100178.
6. "小田急9000形" [Odakyu 9000 series]. rail.hobidas.com. Neko Publishing. August 10, 2006. Archived from the original on November 21, 2019. Retrieved November 27, 2019.
7. "小田急電鉄9000形ミニ・ディテールファイル　その9" [Odakyu Electric Railway 9000 series mini detail file 9]. rail.hobidas.com. Neko Publishing. May 15, 2006. Archived from the original on November 21, 2019. Retrieved November 27, 2019.
8. Matsuo, Kazuto (April 7, 2013). "下北沢付近地下化記念! 9000形&5000形など1970年代懐かしの小田急線" [Commemoration of underground-ization near Shimokitazawa! Odakyu Line of 1970s nostalgia, such as 9000 series & 5000 series]. news.mynavi.jp (in Japanese). Mynavi Corporation. Archived from the original on November 21, 2019. Retrieved November 27, 2019.