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British Rail Class 46
The British Rail Class 46 is a class of diesel locomotive. They were built from 1961 to 1963 at British Railways' Derby Works and were initially numbered D138–D193. With the arrival of TOPS they were renumbered to Class 46. Along with the similar Class 44 and 45 locomotives, they became known as Peaks.
Fifty-six locomotives were built. The first was withdrawn in 1977 and all were withdrawn by the end of 1984.
The Class 46 design was structurally the same as the preceding Class 45 build, and had the same Sulzer engine, but differed in the fitment of a Brush generator and traction motors, in place of the Crompton Parkinson equipment fitted to the Class 45. Along with the other Sulzer class 44 and 45 designs they are often referred to as "Peaks", so named because the Class 44s were named after mountains.
The British Transport Commission decided to cancel the final twenty Class 46 locomotives then on order and invited bids for twenty locomotives of a new Type 4 specification using the Brush electrical equipment intended for the cancelled order. Brush won the contract with what became the Class 47.
In common with the other classes of Peak diesel which had the same design, Class 46 locomotives were prone to cracking of the bogie castings. This was due to the stresses of negotiating sharp curves with a bogie of such length, and also because the buffing gear was mounted on the bogie itself and not on the main frame of the locomotive.
All Class 46s were delivered in BR Green with a broad horizontal grey stripe on the lower bodyside and small yellow warning panels on the ends. From the late 1960s all were repainted into the corporate image Rail Blue, although repaints carried out at BR depots between works visits did vary and at least D138 (later 46 001) was recorded in Rail Blue with full yellow ends, but retaining the grey stripe on the lower body side.
Unlike the earlier Peak classes where many had names, only D163 (later 46 026) carried one (Leicestershire and Derbyshire Yeomanry) from new. This engine was nicknamed "The Lady" by both staff and rail fans alike. This name is now carried by the preserved Class 45 number D123/45 125.
Whilst seeing intermittent use on freight trains, Class 46s were regular performers on passenger turns, particularly North East-South West, Trans-Pennine and secondary North East-London trains, and depot allocations reflected this with locos at Gateshead and Plymouth in 1977 giving a typical spread. Long-distance freight workings were common, particularly "clay hoods" carrying china clay from Cornwall to the Stoke-on-Trent area.
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British Rail Class 46 AI simulator
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British Rail Class 46
The British Rail Class 46 is a class of diesel locomotive. They were built from 1961 to 1963 at British Railways' Derby Works and were initially numbered D138–D193. With the arrival of TOPS they were renumbered to Class 46. Along with the similar Class 44 and 45 locomotives, they became known as Peaks.
Fifty-six locomotives were built. The first was withdrawn in 1977 and all were withdrawn by the end of 1984.
The Class 46 design was structurally the same as the preceding Class 45 build, and had the same Sulzer engine, but differed in the fitment of a Brush generator and traction motors, in place of the Crompton Parkinson equipment fitted to the Class 45. Along with the other Sulzer class 44 and 45 designs they are often referred to as "Peaks", so named because the Class 44s were named after mountains.
The British Transport Commission decided to cancel the final twenty Class 46 locomotives then on order and invited bids for twenty locomotives of a new Type 4 specification using the Brush electrical equipment intended for the cancelled order. Brush won the contract with what became the Class 47.
In common with the other classes of Peak diesel which had the same design, Class 46 locomotives were prone to cracking of the bogie castings. This was due to the stresses of negotiating sharp curves with a bogie of such length, and also because the buffing gear was mounted on the bogie itself and not on the main frame of the locomotive.
All Class 46s were delivered in BR Green with a broad horizontal grey stripe on the lower bodyside and small yellow warning panels on the ends. From the late 1960s all were repainted into the corporate image Rail Blue, although repaints carried out at BR depots between works visits did vary and at least D138 (later 46 001) was recorded in Rail Blue with full yellow ends, but retaining the grey stripe on the lower body side.
Unlike the earlier Peak classes where many had names, only D163 (later 46 026) carried one (Leicestershire and Derbyshire Yeomanry) from new. This engine was nicknamed "The Lady" by both staff and rail fans alike. This name is now carried by the preserved Class 45 number D123/45 125.
Whilst seeing intermittent use on freight trains, Class 46s were regular performers on passenger turns, particularly North East-South West, Trans-Pennine and secondary North East-London trains, and depot allocations reflected this with locos at Gateshead and Plymouth in 1977 giving a typical spread. Long-distance freight workings were common, particularly "clay hoods" carrying china clay from Cornwall to the Stoke-on-Trent area.