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TECHNICAL DATA
| Locomotive Numbers | 1250 -1266 (1250 Class) |
| 1270 - 1299 (1270 Class) | |
| Type | Diesel-Electric |
| Introduced | 1959 (1250 Class) |
| 1964 (1270 Class) | |
| Number in Class | 17; 0 in service (1250 Class) |
| 30; 0 in service (1270 Class) | |
| Manufacturer | English Electric |
| Gauge | Narrow Gauge (1,067mm or 3' 6") |
| Axles | O°-O°-O°
O°-O°-O° Co-Co |
| Length | 16.13m |
| Mass | 91t (1250 Class) |
| 85t (1270 Class) | |
| Engine | EE 12SVT |
| Generator | EE 822 |
| Traction Motors | EE 525 |
| Power | 1035 kW / 1390 HP (1250 - 1254) |
| 1145 kW / 1535 HP (1255-1266; 1270) | |
| Tractive Effort | 227 / 182 kN (1250 - 1254) |
| 254 / 185 kN (1255 - 1266) | |
| 272 / 215 kN (1270) | |
| Speed | 80 km/h (50mph) |
CLASS INFORMATION
| Locomotive | Serial No | In Service | Withdrawn | Scrapped | Comments |
| 1250 | A-025 | 7/1959 | 5/1987 | 12/1989 | |
| 1251 | A-026 | 8/1959 | 11/1987 | 12/1989 | |
| 1252 | A-027 | 9/1959 | 10/1980 | 9/1985 | Parts used for rebuild of 1208 to 1225 |
| 1253 | A-028 | 11/1959 | 9/1982 | 9/1985 | Parts used for rebuild of 1208 to 1225 |
| 1254 | A-029 | 12/1959 | 11/1987 | 12/1989 | |
| 1255 | A-043 | 9/1960 | 11/1987 | 12/1990 | |
| 1256 | A-044 | 11/1960 | 11/1987 | 12/1990 | |
| 1257 | A-045 | 11/1960 | 11/1987 | 12/1990 | |
| 1258 | A-046 | 11/1960 | 11/1987 | 12/1990 | |
| 1259 | A-047 | 1/1961 | 9/1987 | 12/1990 | |
| 1260 | A-048 | 9/1961 | 11/1987 | 12/1990 | |
| 1261 | A-049 | 9/1961 | 11/1987 | 12/1990 | |
| 1262 | A-050 | 10/1961 | 11/1987 | Preserved | |
| 1263 | A-051 | 11/1961 | 11/1987 | Preserved | |
| 1264 | A-052 | 4/1962 | 11/1987 | 12/1990 | |
| 1265 | A-073 | 7/1963 | 9/1987 | 12/1989 | |
| 1266 | A-074 | 7/1963 | 10/1987 | 12/1989 | |
| 1270 | A-092 | 10/1964 | 11/1988 | Preserved | |
| 1271 | A-090 | 11/1964 | 1/1989 | 10/1991 | |
| 1272 | A-091 | 11/1964 | 1/1989 | 1/1992 | |
| 1273 | A-093 | 12/1964 | 11/1988 | 10/1991 | |
| 1274 | A-094 | 12/1964 | 1/1989 | 10/1991 | |
| 1275 | A-095 | 1/1965 | 12/1988 | 9/1991 | |
| 1276 | A-098 | 4/1965 | 1/1989 | 11/1991 | |
| 1277 | A-099 | 4/1965 | 1/1989 | 11/1991 | |
| 1278 | A-100 | 5/1965 | 11/1988 | 9/1991 | |
| 1279 | A-101 | 5/1965 | 11/1988 | 11/1991 | |
| 1280 | A-102 | 6/1965 | 11/1988 | 11/1991 | |
| 1281 | A-103 | 7/1965 | 1/1989 | Preserved | |
| 1282 | A-108 | 12/1965 | 10/1988 | 10/1991 | |
| 1283 | A-113 | 2/1966 | 10/1988 | 11/1991 | |
| 1284 | A-107 | 12/1965 | 11/1988 | 10/1991 | |
| 1285 | A-106 | 11/1965 | 10/1988 | 1/1992 | |
| 1286 | A-112 | 2/1966 | 1/1989 | 10/1991 | |
| 1287 | A-115 | 3/1966 | 12/1988 | 11/1991 | |
| 1288 | A-114 | 4/1966 | 11/1988 | 10/1991 | |
| 1289 | A-117 | 4/1966 | 12/1988 | 10/1991 | |
| 1290 | A-119 | 4/1966 | 11/1988 | 11/1991 | |
| 1291 | A-120 | 5/1966 | 9/1988 | 11/1991 | |
| 1292 | A-122 | 6/1966 | 11/1988 | 11/1991 | |
| 1293 | A-123 | 6/1966 | 11/1988 | 1/1992 | |
| 1294 | A-126 | 6/1966 | 12/1988 | 10/1991 | |
| 1295 | A-127 | 7/1966 | 1/1989 | 9/1991 | |
| 1296 | A-128 | 7/1966 | 4/1988 | 10/1991 | |
| 1297 | A-129 | 7/1966 | 8/1987 | 12/1989 | |
| 1298 | A-130 | 8/1966 | 1/1989 | 11/1991 | |
| 1299 | A-131 | 8/1966 | 11/1988 | 10/1991 |
NAMED LOCOMOTIVES
| Locomotive | Given Name | Comments |
| 1281 | Century | 1281 was named to mark the century of the first railway in Queensland |
PRESERVED LOCOMOTIVES
| Locomotive | Organisation |
| 1262 | QR Heritage Division |
| 1263 | ARHS Qld Division |
| 1270 | QR Heritage Division |
| 1281 | QR Heritage Division |
