Class 71

HA, Ha, and ha can refer to various things, depending on case. The all-uppercase HA may refer to: the HA! comedy channel, one of the precursors to Comedy Central the British Rail pre-TOPS classification for twenty-four electric locomotives, later known as Class 71 Haiti (FIPS 10-4 country code) Hawaiian Holdings Inc., formerly Hawaiian Airlines (IATA airline designator) Hells Angels, a motorcycle club hemagglutination assay, in virology high availability, as in a high-availability cluster home ...

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The 1955 diesel locomotive classes are given in brackets where applicable. List of British Rail classes - Shunters. A large number of different shunter types were purchased by British Rail and its predecessors, many of which were withdrawn prior to the introduction of TOPS. The table below attempts to list the different types and the different classifications used to describe them as clearly as possible: Small shunters under 350 hp (261 kW) Large shunters 350 hp (261 kW) and overSee also:

List of British Rail classes, List of British Rail classes - Diesel locomotives, List of British Rail classes - Shunters, List of British Rail classes - Type 1s, List of British Rail classes - Type 2s, List of British Rail classes - Type 3s, List of British Rail classes - Type 4s, List of British Rail classes - Type 5s, List of British Rail classes - Electric locomotives, List of British Rail classes - DC electric locomotives, List of British Rail classes - AC electric locomotives, List of British Rail classes - Miscellaneous locomotives, List of British Rail classes - Departmental, List of British Rail classes - Steam, List of British Rail classes - Petrol, List of British Rail classes - Gas turbine, List of British Rail classes - Builders' demonstrators, List of British Rail classes - Diesel multiple units DMUs, List of British Rail classes - 1st generation heritage DMUs, List of British Rail classes - 2nd generation DMUs, List of British Rail classes - Diesel-electric multiple units DEMUs, List of British Rail classes - Electric multiple units EMUs, List of British Rail classes - AC EMUs and mixed-voltage EMUs, List of British Rail classes - DC EMUs, List of British Rail classes - Battery electric multiple unit, List of British Rail classes - Departmental multiple units, List of British Rail classes - Diesel multiple units, List of British Rail classes - Gas turbine multiple unit, List of British Rail classes - Electric Multiple Units

Read more here: » List of British Rail classes: Encyclopedia II - List of British Rail classes - Diesel locomotives

The ten examples of Class 74 electro diesel were rebuilt from the Class 71, pre-TOPS type HA straight electric locomotives. Twenty-four examples of Class 71 were built in 1958 at the British Rail works in Doncaster. In the 1960s ten examples of Class 71 were deemed surplus to requirments and withdrawn from service. However instead of being scrapped they sent to the British Rail works at Crewe were they were rebui ...

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British Rail Class 74, British Rail Class 74 - History, British Rail Class 74 - Power supply, British Rail Class 74 - Operations, British Rail Class 74 - The end, British Rail Class 74 - Departmental use

Read more here: » British Rail Class 74: Encyclopedia II - British Rail Class 74 - History

The engines of Class 74 were more powerful than the Class 73 electro diesels. However the Paxman engines in the Class 74 was not as reliable as the English Electric engine in the Class 73. Their complex electronic control system was also problematic and the class was dogged with failures up to their last days. Individuals were often parked up "failed" awaiting retrieval. They were all allocated to Eastleigh depot their entire operational life, and 74003 was the last engine to enter Eastleigh works for repairs. In common with class 73, class 74 were sent to Crewe for heavy maintenance up until 1972, whe ...

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British Rail Class 74, British Rail Class 74 - History, British Rail Class 74 - Power supply, British Rail Class 74 - Operations, British Rail Class 74 - The end, British Rail Class 74 - Departmental use

Read more here: » British Rail Class 74: Encyclopedia II - British Rail Class 74 - Operations

The 900 series classes were reserved for multiple units in departmental stock, most of which were converted from old passenger units. In broad terms, classes 930-935 were allocated to Southern Region multiple units (ex-200 and 400 series), 936 & 937 to other EMUs (ex-300 and 500 series) and 960 to other DMUs (ex-100 series). In recent years, this has been less rigidly adhered to. List of British Rail classes - Diesel multiple units. Class 901 (Test units, ex-Class 101) Class 930 (Departm ...

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List of British Rail classes, List of British Rail classes - Diesel locomotives, List of British Rail classes - Shunters, List of British Rail classes - Type 1s, List of British Rail classes - Type 2s, List of British Rail classes - Type 3s, List of British Rail classes - Type 4s, List of British Rail classes - Type 5s, List of British Rail classes - Electric locomotives, List of British Rail classes - DC electric locomotives, List of British Rail classes - AC electric locomotives, List of British Rail classes - Miscellaneous locomotives, List of British Rail classes - Departmental, List of British Rail classes - Steam, List of British Rail classes - Petrol, List of British Rail classes - Gas turbine, List of British Rail classes - Builders' demonstrators, List of British Rail classes - Diesel multiple units DMUs, List of British Rail classes - 1st generation heritage DMUs, List of British Rail classes - 2nd generation DMUs, List of British Rail classes - Diesel-electric multiple units DEMUs, List of British Rail classes - Electric multiple units EMUs, List of British Rail classes - AC EMUs and mixed-voltage EMUs, List of British Rail classes - DC EMUs, List of British Rail classes - Battery electric multiple unit, List of British Rail classes - Departmental multiple units, List of British Rail classes - Diesel multiple units, List of British Rail classes - Gas turbine multiple unit, List of British Rail classes - Electric Multiple Units

Read more here: » List of British Rail classes: Encyclopedia II - List of British Rail classes - Departmental multiple units

List of British Rail classes - 1st generation heritage DMUs. TOPS classes Class 100 (Gloucester) Class 101 (Met-Camm) Class 102 (Met-Camm) Class 103 (Park Royal) Class 104 (BRCW) Class 105 (Cravens) Class 106 (Cravens) Class 107 (Derby Heavyweight) Class 108 (Derby Lightweight) Class 109 (Wickham) Class 110 (Calder Valley) Class 111 (Met-Camm) Class 112 (Great Northern Suburban)

List of British Rail classes - DC electric locomotives. TOPS Classes Class 70 Class 71 HA Class 73 JA or JB Class 74 HB Class 76 EM1 Class 77 EM2 Pre-TOPS Classes Class EB1 (26502-26511) Class EE1 (26600) Class ES1 (26500-26501) List of British Rail classes - AC electric locomotives. Class 80 Class 81 AL1 Class 82 AL2 Class ...

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List of British Rail classes, List of British Rail classes - Diesel locomotives, List of British Rail classes - Shunters, List of British Rail classes - Type 1s, List of British Rail classes - Type 2s, List of British Rail classes - Type 3s, List of British Rail classes - Type 4s, List of British Rail classes - Type 5s, List of British Rail classes - Electric locomotives, List of British Rail classes - DC electric locomotives, List of British Rail classes - AC electric locomotives, List of British Rail classes - Miscellaneous locomotives, List of British Rail classes - Departmental, List of British Rail classes - Steam, List of British Rail classes - Petrol, List of British Rail classes - Gas turbine, List of British Rail classes - Builders' demonstrators, List of British Rail classes - Diesel multiple units DMUs, List of British Rail classes - 1st generation heritage DMUs, List of British Rail classes - 2nd generation DMUs, List of British Rail classes - Diesel-electric multiple units DEMUs, List of British Rail classes - Electric multiple units EMUs, List of British Rail classes - AC EMUs and mixed-voltage EMUs, List of British Rail classes - DC EMUs, List of British Rail classes - Battery electric multiple unit, List of British Rail classes - Departmental multiple units, List of British Rail classes - Diesel multiple units, List of British Rail classes - Gas turbine multiple unit, List of British Rail classes - Electric Multiple Units

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List of British Rail classes - Departmental. Class 97 Class 97/6 Pre-TOPS Departmental Locomotives List of British Rail classes - Steam. Class 98 List of British Rail classes - Petrol. 15097-15099 List of British Rail classes - Gas turbine. 18000 18100

List of British Rail classes, List of British Rail classes - Diesel locomotives, List of British Rail classes - Shunters, List of British Rail classes - Type 1s, List of British Rail classes - Type 2s, List of British Rail classes - Type 3s, List of British Rail classes - Type 4s, List of British Rail classes - Type 5s, List of British Rail classes - Electric locomotives, List of British Rail classes - DC electric locomotives, List of British Rail classes - AC electric locomotives, List of British Rail classes - Miscellaneous locomotives, List of British Rail classes - Departmental, List of British Rail classes - Steam, List of British Rail classes - Petrol, List of British Rail classes - Gas turbine, List of British Rail classes - Builders' demonstrators, List of British Rail classes - Diesel multiple units DMUs, List of British Rail classes - 1st generation heritage DMUs, List of British Rail classes - 2nd generation DMUs, List of British Rail classes - Diesel-electric multiple units DEMUs, List of British Rail classes - Electric multiple units EMUs, List of British Rail classes - AC EMUs and mixed-voltage EMUs, List of British Rail classes - DC EMUs, List of British Rail classes - Battery electric multiple unit, List of British Rail classes - Departmental multiple units, List of British Rail classes - Diesel multiple units, List of British Rail classes - Gas turbine multiple unit, List of British Rail classes - Electric Multiple Units

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British Rail operated a wide variety of electric multiple units. AC units operated off 25 kV AC from overhead wires. Where clearances for the overhead wires on the Great Eastern and London, Tilbury & Southend routes were below standard, a reduced voltage of 6.25 kV AC was used. The Midland Railway units used 6.6 kV AC. Under the computer numbering, AC units (including mixed-voltage units that can also work off a DC supply) were given a Class in the range 300-399. DC unitsSee also:

List of British Rail classes, List of British Rail classes - Diesel locomotives, List of British Rail classes - Shunters, List of British Rail classes - Type 1s, List of British Rail classes - Type 2s, List of British Rail classes - Type 3s, List of British Rail classes - Type 4s, List of British Rail classes - Type 5s, List of British Rail classes - Electric locomotives, List of British Rail classes - DC electric locomotives, List of British Rail classes - AC electric locomotives, List of British Rail classes - Miscellaneous locomotives, List of British Rail classes - Departmental, List of British Rail classes - Steam, List of British Rail classes - Petrol, List of British Rail classes - Gas turbine, List of British Rail classes - Builders' demonstrators, List of British Rail classes - Diesel multiple units DMUs, List of British Rail classes - 1st generation heritage DMUs, List of British Rail classes - 2nd generation DMUs, List of British Rail classes - Diesel-electric multiple units DEMUs, List of British Rail classes - Electric multiple units EMUs, List of British Rail classes - AC EMUs and mixed-voltage EMUs, List of British Rail classes - DC EMUs, List of British Rail classes - Battery electric multiple unit, List of British Rail classes - Departmental multiple units, List of British Rail classes - Diesel multiple units, List of British Rail classes - Gas turbine multiple unit, List of British Rail classes - Electric Multiple Units

Read more here: » List of British Rail classes: Encyclopedia II - List of British Rail classes - Electric multiple units EMUs