Buses Bedford VI Bedford SB

Bedford SB

Bedford SB
1959 BEDFORD SB

A preserved Bedford SB from 1959 in the United Kingdom
Overview
Manufacturer Bedford (General Motors)
Body and chassis
Doors One behind front axle
Floor type Step entrance
Chassis Straight Ladder frame
Powertrain
Engine Bedford
Perkins
Leyland
Capacity 33-41 Seats
Transmission 4-speed synchromesh
5-speed
Dimensions
Length 27ft 6in, later 30ft
Width 7ft 6in, optionally 8ft and later 2.5m
Chronology

The Bedford SB is a front-engined bus chassis that was built by Bedford in the United Kingdom. It was launched at the 1950 Commercial Motor Show as the replacement for the Bedford OB.

It was the first Bedford vehicle to have a “forward control” design, with the driver’s seat located at the right of the engine and the front axle underneath. It used a four-speed synchromesh gearbox, with five-speed gearboxes offered later. It could be fitted with Bedford’s own petrol or diesel engine, with the Perkins R6 and Leyland O.350 and O.370 engines also being offered during the 1950s and 1960s.

Wheelbase length was originally 17 ft 2in (5.23 m), but from 1955 an 18 ft (5.49 m) option was also offered. Bodywork was provided by a wide range of builders, including DuplePlaxtonHarrington, Willowbrook and Marshall of the United Kingdom, Hawke Coachwork, Coachwork International and New Zealand Motor Bodies of New Zealand, and many more.

There were numerous variants of the SB, each determined by the engine fitted:

1951 Bedford SB with Duple C33F bodywork

1951 Bedford SB with Duple C33F bodywork

1951 Bedford SB (3)

1951 Bedford SB

1952 Bedford Duple Vega Ad

1952 Bedford SB Duple Vega Ad

1952 Bedford SB with Duple C35F bodywork.

1952 Bedford SB with Duple C35F bodywork.

1952 BEDFORD SB

1952 BEDFORD SB

1953 Bedford SB with Hainje coachwork

1953 NB-78-49 Bedford SB with Hainje coachwork

1953 Bedford SB 25653 Plaxton C35F seats

1953 Bedford SB 25653 Plaxton C35F seats

1953 Bedford SB 26568 Plaxton C35F seats

1953 Bedford SB 26568 Plaxton C35F seats

1954 Bedford SB 29-AC-83 Mulliner C29F Air Ministry

1954 Bedford SB 29-AC-83 Mulliner C29F Air Ministry

1954 Bedford SB Bedford carr ECF nr 19

1954 Bedford SB carr ECF nr 19

Bedford carr. ECF Vechtstroom 12 ex De Vries

Bedford SB carr. ECF Vechtstroom 12 ex De Vries

06

Bedford SB –  Edesche Carrosserie Fabriek

SBG

1954 Bedford SBG with Mulliner body

1954 Bedford SBG with Mulliner body

1954 Bedford SBG with 'Seagull' body

1954 Bedford SBG with ‘Seagull’ body

1956 Bedford SBG with Burlingham C35F bodywork

1956 Bedford SBG with Burlingham C35F bodywork

1956 Bedford SBG with Burlingham Seagull C35F bodywork.

1956 Bedford SBG with Burlingham Seagull C35F bodywork.

1956 Bedford SBG with Yeates C41C bodywork

1956 Bedford SBG with Yeates C41C bodywork

1956 plaxton consort bus brochure Bedford

1956 plaxton consort bus brochure Bedford SBG

1957 Bedford SBG Yeates Europa C41F

1957 Bedford SBG Yeates Europa C41F

SB3

1958 Bedford Duple Vaga SB3

1958 Bedford Duple Vega SB3

1958 Bedford SB3 with Duple Vega C41F bodywork.

1958 Bedford SB3 Duple Vega UK

1958 Bedford SB3 with Plaxton C41F bodywork.

1958 Bedford SB3 with Plaxton C41F bodywork.

1958 Bedford SB3 Duple Vega UK

1958 Bedford SB3 Duple Vega UK

SBO

1955 Bedford SBO with Duple C36F bodywork

1955 Bedford SBO with Duple C36F bodywork

1954 Bedford SBO with Duple DP35F body

1954 Bedford SBO with Duple DP35F body

1954 Bedford SBO with Duple Vega C39F body

1954 Bedford SBO with Duple Vega C39F body

SB5

1962 Bedford SB5 with Yeates Fiesta C41F bodywork

1962 Bedford SB5 with Yeates Fiesta C41F bodywork

SB8

1958 Bedford SB8 with Plaxton C41F bodywork

1958 Bedford SB8 with Plaxton C41F bodywork

1958 Bedford SB8 24DAR was Duple C41F bodied

1958 Bedford SB8 24DAR was Duple C41F bodied

1963 Bedford SB8 Duple Bella Vega (C41F)

1963 Bedford SB8 Duple Bella Vega (C41F)

SB13

1965 Bedford SB13 Duple Firefly (C37F)

1965 Bedford SB13 Duple Firefly (C37F)

1965 Bedford SB13 Duple Vega (C41F)

1965 Bedford SB13 Duple Vega (C41F)

 

Variant Engine
SB Bedford petrol 4.927 L
SBG Bedford petrol 4.927 L
SB3 Bedford petrol 4.927 L
SBO Perkins R6
SB1 Bedford diesel 4.927 L
SB5 Bedford diesel 5.42 L
SB8 Leyland O.350
SB13 Leyland O.370

From 1968, the SB series used computer classification codes from Bedford’s parent company General Motors, with the petrol-engined SB3 variant becoming NFM, and the diesel-engined SB5 variant becoming NJM. However, they were rarely referred to under these codes.

The SB was built for the UK market and export, and production spanned 37 years – longer than any other Bedford bus chassis – until the sale of Bedford Vehicles in 1987.

Versions of the Bedford SB exported to New Zealand were powered by the standard petrol or diesel engines, except the last batch sold to New Zealand Railways Department, which used Caterpillar C7 engines and Allison transmissions. The use of Caterpillar C7 engines and Allison transmissions by New Zealand Railways Road Services is not supported. All the NZRRS SB buses had Bedford petrol or diesel engines. 40 of the Bedford YMT buses had Caterpillar C7 engines. Many were later powered by Caterpillar, Leyland, Scammell, Cummins, Detroit, Isuzu, Mitsubishi, Gardner and GMC engines. While most retained the standard gearbox, many later ran with Eaton/fuller manual, Allison automatic or Daimler epicyclic gearboxes. NZR buses were also fitted with 2 speed Eaton differentials for the country’s hilly terrain and mountain passes.

References

[1]

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Author: Jeroen

In Dutch, my homelanguage: Ik ben Jeroen, tot januari 2015 was ik al dik 26 jaar werkzaam in een psychiatrisch ziekenhuis in een stad vlakbij Werelds grootste havenstad Rotterdam. Eerst als verpleegkundige/begeleider op high care, later op afdeling dubbeldiagnose (verslavingen) en ook nog een tijdje als administratief medewerker. Ik heb een spierziekte "Poli Myositis" (alle spieren zijn ontstoken) daardoor weinig energie. Sinds augustus 2015 is daarbij de diagnose Kanker gesteld, en ben ik helemaal arbeidsongeschikt geworden en zit middenin de behandelfase. Gelukkig ben ik daarnaast getrouwd, vader, en opa, en heb de nodige hobby's. Een daarvan is transportmiddelen verzamelen en daarmee een blog schrijven. Dit blog begon met bussen, maar nu komen ook sleepboten, auto's trucks en dergelijke aan bod. Kijk en geniet met me mee, reageer, en vul gerust aan. Fouten zal ik ook graag verbeteren. In English: I'm Jeroen, till januari 2015 I was already 26 years working as a nurse in a psychiatric hospital, near Rotterdam, Worlds biggest harbour with more than 98 nationalities living within it's borders. First I worked on closed high care ward and the last years on a ward with mainly addicted people. I liked my work very much. In 2007 I got ill. I got the diagnose Poli Myositis, a musscle dissease. Al my mussles are inflamed. And last august I got another diagnose. Cancer. It's plaveicelcel carcinoma and treated with Chemo and radioation. So I've even less energy than the last years. Still I try to make something of my life and the blog is helping with surviving with some pleasure.

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