# Odakyu 1000 series

The Odakyu 1000 series (小田急1000形, Odakyū 1000-gata) is an electric multiple unit (EMU) commuter train type operated by the private railway operator Odakyu Electric Railway in the Tokyo area of Japan. Built between 1987 and 1993, the first train entered service in March 1988.

## Formations

As of 1 April 2017, the fleet consists of 196 vehicles, formed as 4-, 6-, 8-, and 10-car sets, with car 1 at the western end.

### 10-car sets

The six ten-car sets, 1091 to 1096, are formed as follows.
| Car No. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Designation | Tc2 | M5 | T3 | M4 | M3 | T2 | T1 | M2 | M1 | Tc1 |
| Numbering | 149x | 144x | 139x | 134x | 124x | 129x | 119x | 114x | 104x | 109x |
* Cars 3, 5, 8, and 9 are each equipped with one single-arm pantograph.
* Car 2 is designated as a mildly-air-conditioned car.

### 8-car set

The single eight-car set, 1081, is formed as follows.
| Car No. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Designation | Tc2 | M5 | T3 | M4 | T1 | M2 | M1 | Tc1 |
| Numbering | 1481 | 1431 | 1381 | 1331 | 1181 | 1131 | 1031 | 1081 |
* Cars 3, 4, 6, and 7 are each equipped with one single-arm pantograph.
* Car 2 is designated as a mildly-air-conditioned car.

### 6-car sets 1251 to 1255

The four six-car sets 1251 and 1253 to 1255 are formed as follows.
| Car No. | 1 | 2 | 3 | 4 | 5 | 6 |
| Designation | Tc2 | M3 | T | M2 | M1 | Tc1 |
| Numbering | 145x | 140x | 135x | 130x | 120x | 125x |
* Cars 3, 4, and 5 are each equipped with one single-arm pantograph.
* Car 2 is designated as a mildly-air-conditioned car.

### 6-car sets 1751 to 1756

The six six-car 1500 series sets 1751 to 1756 are formed as follows. These sets have wider side doors.
| Car No. | 1 | 2 | 3 | 4 | 5 | 6 |
| Designation | Tc2 | M3 | T | M2 | M1 | Tc1 |
| Numbering | 195x | 190x | 185x | 180x | 170x | 175x |
* On sets 1751 and 1752, cars 3, 4, and 5 are each equipped with one single-arm pantograph, while on sets 1753 to 1756, cars 2, 4, and 5 are each equipped with one single-arm pantograph
* Car 2 is designated as a mildly-air-conditioned car.

### 4-car sets

The 19 four-car sets, 1051 to 1069 are formed as follows.
| Car No. | 1 | 2 | 3 | 4 |
| Designation | Tc2 | M2 | M1 | Tc1 |
| Numbering | 115x | 110x | 100x | 105x |
* Cars 2 and 3 are each equipped with one single-arm pantograph.
Sets 1058 to 1061 are finished in a red Hakone Tozan Railway livery, and are normally limited to services between Shin-Matsuda and Hakone-Yumoto.

## Interior

Passenger accommodation consists of longitudinal bench seating throughout.
* Interior view before refurbishment
* Interior view after refurbishment

## History

The first trains were delivered in December 1987, entering revenue service from 22 March 1988. From 2007, the train type was displaced from Tokyo Metro Chiyoda Line services by new 4000 series 10-car sets. Since then, they have been used on surface-level Odakyu Line services, as well as some portions of the Hakone Tozan Line.

## Refurbishment

From 2014, 160 out of the operational fleet of 196 1000 series started undergoing a programme of life-extension refurbishment. The refurbishment includes the replacement of the existing traction motors with new 190 kW AC traction motors, silicon carbide inverter traction control, and new air-conditioning units with 8% higher capacity. The interiors were completely refurbished with LED lighting, LCD passenger information displays above the doorways, and new moquette seat covers. The exteriors also received LED headlights and direction indicators.
As of August 2022, two unrefirbushed trainsets remain in operation: a 6-car set and a 4-car set.