Seddon Pennine 7
Encyclopedia
The Seddon Pennine 7 was a mid-underfloor-engined single-deck bus or coach chassis built by Seddon Atkinson
Seddon Atkinson
Seddon Atkinson Vehicles Limited, a manufacturer of large goods vehicles based in Oldham, Greater Manchester, England, was formed in mid 1970 when Atkinson Vehicles Limited of Preston was acquired by Seddon Diesel Vehicles Limited of Oldham...

 between 1974 and 1982.

Historical overview

Seddon Atkinson Ltd had risen to prominence in the UK bus and coach market in the late 1960s with the Pennine 4 front-engined lightweight chassis and then the Gardner-powered Seddon Pennine RU
Seddon Pennine RU
The Seddon Pennine RU was a rear-engined single-decker bus built by Seddon Diesel Vehicles/Seddon Atkinson between 1969 and 1974.-History overview of Seddon/Seddon Atkinson bus production:...

 rear-engined bus. In 1970 Leyland announced it was to cease making the Leopard
Leyland Leopard
The Leyland Leopard was a mid-engined single-deck bus and coach chassis built by Leyland between 1959 and 1982. It was popular with bus and coach operators throughout the British Isles...

 PSU3/3R, which version had a Leyland manual gearbox and the 140 bhp O600H engine. All future Leopard production was to be of models with the larger O680H engine and the Pneumocyclic semi-automatic gearbox. Scottish Bus Group
Scottish Bus Group
The Scottish Bus Group was a state-owned Scottish holding company that included a number of bus operators covering the whole of Scotland. The group was formed in 1961 as Scottish Omnibuses Group Ltd, to take control of the British Transport Commission's bus operating subsidiaries in Scotland...

 were by this time the only purchaser of the old variant, they stated they would not buy semi-automatic Leopards and regarding the O680 as too thirsty tried to persuade Leyland to fit the Gardner horizontal engine in the Leopard. Leyland (having had less than full value from previous SBG specials) declined.

As a result, dismayed by the monopoly position British Leyland now enjoyed, by 1972 Scottish Bus Group had approached Seddon Atkinson; at the same time they were working with Ailsa, the Irvine-based Volvo truck importer, on a new type of double-deck underframe. Collaboration with SBG resulted in rapid development. After one prototype, production commenced with the first example bodied and delivered in October 1973; the last entered service after a run of 527 chassis in 1982.

No replacement was produced, thus Seddon's involvement with bus manufacture ended with the Pennine 7.

Chassis description

The Seddon Pennine 7 featured a ladder-frame chassis with channel-section longitudinals and tubular cross-members, available to either 5.6m wheelbase for 11m bodies or (from 1975) 6m wheelbase for 12m bodies. It was horizontal in elevation but only parallel in plan over the leaf-sprung front and rear axles; the nearside member was in-swept at the front to allow a wider low-entrance area, and the offside member was outswept in the wheelbase to allow ready access to the Gardner engine and its auxiliaries. The frame did not continue aft of the rear axle-mounting, collaboration with SBG's preferred supplier Walter Alexander Coachbuilders
Walter Alexander Coachbuilders
Walter Alexander Coachbuilders was a Scottish bus coachbuilder and operater based in Falkirk.-History:Walter Alexander, notice a lack expasion by the Falkirk and District Tramways Company's especially in to Grangemouth which never hdd a tram line. In 1913 Alexander's Motor Service was created to...

 meant there was no worry about the supplier providing a strongly cantilevered rear overhang capable of supporting a capacious luggage boot, especially after Alexander's switch back (from 1967–72) to aluminium alloy body framing. Power steering was standard. The prototype (carrying a late body by Seddon's Pennine Coachcraft subsidiary) had a Self-Changing Gears
Self-Changing Gears
Self-Changing Gears was a British company, set up and owned equally by Walter Gordon Wilson and John Davenport Siddeley to develop and exploit the Wilson or pre-selector gearbox...

 semi-automatic gearbox, but production variants were initially to be fitted with a four-speed ZF synchromesh unit, coach versions having a higher ratio final drive allowing a 76 mph maximum speed, 56 mph being the designed maximum for bus versions, better acceleration and more flexible performance ensuing with the low ratio back axle.

Customers

It was a chassis commissioned by Scottish Bus Group but only two of its subsidiaries bought the type. Eastern Scottish took 301 (over 57% of production) and Western SMT 213 (over 40%). Most of these were bodied by Alexander but Eastern Scottish took 64 from 1978-81 with Plaxton Supreme
Plaxton Supreme
The Plaxton Supreme was a design of coach bodywork built by Plaxton. It was first built, on small chassis only, in 1974, replacing the Panorama. On full-sized chassis, it replaced the Panorama Elite in 1975, and was superseded by the Paramount in 1982/3...

 III or IV Express bodies, the first ever Plaxton bodies for the SBG. Buses carried the Alexander AY or AYS
Alexander Y Type
The Alexander Y Type was a long-running design of single-deck bus or coach bodywork built by Walter Alexander Coachbuilders of Falkirk, Scotland. It was built on a wide range of chassis between 1962 and 1983...

 body and (non-Plaxton) coaches either the AY or AT (Alexander T-Type) body, coaches generally had 49 seats and buses 53, although some of Eastern's touring coaches had 45 reclining seats, generally in the rather bus-like AY body. All of SBG's 11 metre Seddons qualified for New Bus Grant.

The Pennine 7 was originally envisaged just as an 11-metre bus or coach, which meant it was suitable for the UK government's New Bus Grant. In 1974, pleased with the initial batch, Eastern Scottish commissioned a longer version to carry the exclusive and luxurious Alexander M-Type coach body. At the time Anglo-Scottish express services were expanding, and whilst previously Western and Eastern Scottish were the only operators to work to London, Alexander (Fife), and Alexander (Northern) were to gain routes from respectively Kirkcaldy (Fife), Aberdeen and Dundee (Northern) to London. Orders for the new (third series) M-type coaches went to three chassis suppliers, Leyland, Seddon and Volvo, previously Western and Eastern Scottish had chosen a special version of the Bristol RE
Bristol RE
The Bristol RE was a rear-engined single-deck bus chassis built by Bristol Commercial Vehicles from 1962 until 1982. It is widely considered the most successful of the first generation of rear-engined single-deckers....

 for M-type bodies but coach variants of the RE were axed earlier in 1974, the final 12-metre examples having gone to United Automobile Services
United Automobile Services
United Automobile Services or United, as it was commonly known, was a major provider of bus services across the North East and North Yorkshire for 80 years or more...

 earlier that year. Western Scottish chose the Volvo B58-61
Volvo B58
The Volvo B58 is a mid-engined bus chassis built by Volvo of Sweden from 1966 until early 1982. It was the forerunner to the highly successful B10M....

, built in Sweden but imported to the UK by Ailsa Bus in Western Scottish's operating area, the coaches for the Alexander companies would be Leyland Leopard PSU5/4R (with O680 engines and 5-speed Pneumocyclic transmission). Eastern Scottish chose the new version of the Pennine 7, unlike previous versions the 12-metre Pennine 7 as commissioned by Eastern Scottish had a 6-speed ZF synchromesh gearbox, top speed was alleged to be 87 mph, the same as the 256 bhp Volvos of Western with the same gearbox. As circumstances turned out Eastern Scottish initially took four Leopards in the yellow and black colours of their previous M-types for almost a year before its Seddons were completed, then passing the Leylands on to the Alexander companies. When the Seddons did arrive at the end of 1975 they introduced a new blue and white livery which became standard within SBG for services to London until mid 1980s. This featured ¾ of a Saltire flag and the single word SCOTTISH on the side. Soon all SBG M-types were painted thus, although at the time every other bus or coach in the Scottish Bus Group ran in the individual operator's own colours contrary to the rigid corporate branding approach of their English and Welsh counterpart.

With the Volvo B58
Volvo B58
The Volvo B58 is a mid-engined bus chassis built by Volvo of Sweden from 1966 until early 1982. It was the forerunner to the highly successful B10M....

, Leyland Leopard and AEC Reliance
AEC Reliance
The AEC Reliance was a single-deck bus or coach chassis with a mid-underfloor-mounted engine, built by AEC in Southall, west London, England between 1953 and 1979. The name had previously been used between 1928 and 1931 for another single-deck bus chassis....

 supplying the premium-coach class, and with Bus and Car of Belgium, DAF and Mercedes-Benz also offering coaches (the former with a right-hand drive version of the Trailways (USA) coach), the Pennine 7 began to attract orders from private operators, all but one with Plaxton Supreme
Plaxton Supreme
The Plaxton Supreme was a design of coach bodywork built by Plaxton. It was first built, on small chassis only, in 1974, replacing the Panorama. On full-sized chassis, it replaced the Panorama Elite in 1975, and was superseded by the Paramount in 1982/3...

 bodies, the first 12m example went to Smith of Wigan late in 1975 with an early Supreme III C50F body, the next two private sector customers were from Yorkshire, Ward Brothers, Lepton with a pair of 11m 49 seaters and Austin-Wardine, Robin Hood's Bay had a similar 51 seater, Sworder of Walkern, Surrey had a 57 seater, Young of Rampton, Cambridgeshire and Scotts Greys, Darlington took two 57 seaters. Tally Ho of Kingsbridge Devon got 53 seaters on 12m coaches, OK Motor Services were the only independent to take a Pennine 7 to bus grant specification an 11m Supreme II Express with 53 seats. The final Seddon Pennine 7 bodied was BNC334Y which carried a mildly restyled 11m Willowbrook 003 coach body seating 42 with a toilet compartment, this went to Johnson of Oldham after Pennine 7 production had ceased, the dealer who had supplied it hoped to attract orders for similar coaches on Dennis Dorchester
Dennis Dorchester
The Dennis Dorchester was a mid-engined heavy-duty single deck coach or bus chassis built by Dennis in small numbers between 1983 and 1988.About two thirds of the total number built were bought by Scottish Bus Group subsidiaries Western Scottish, Central Scottish and Clydeside Scottish...

 chassis which did not ensue. The London Borough of Brent bought an 11m express-doored example in 1980 for its school transport fleet.

Other than Alexander, Plaxton and Willowbrook the only other body on a new Pennine 7 was by Pennine Coachcraft, this was the prototype, and until their 1979 deliveries (when the two SBG subsidiaries changed their minds on gearboxes) the only one with a Self-Changing Gears
Self-Changing Gears
Self-Changing Gears was a British company, set up and owned equally by Walter Gordon Wilson and John Davenport Siddeley to develop and exploit the Wilson or pre-selector gearbox...

 transmission. In late 1974 it was completed to full-PSV standards, fitted with 49 semi-coach seats and finished in National Bus Company leaf-green and white bus colours; it was licensed for the first time as UBU72N and sent to Crosville to help them to cover the remedial body and chassis work on the 100 Seddon Pennine RU
Seddon Pennine RU
The Seddon Pennine RU was a rear-engined single-decker bus built by Seddon Diesel Vehicles/Seddon Atkinson between 1969 and 1974.-History overview of Seddon/Seddon Atkinson bus production:...

 owned by them, after the rebuilding work was finished it remained with Crosville and was retired after eleven years service, no further Seddons were purchased by NBC.

In service

Eastern Scottish's variants were used on bus, long-distance express services and tours, and were not generally withdrawn early. Western used its similarly but had always had a shorter-life policy for its vehicles and the first of their Pennine 7s were offered for sale at around the seven year mark, four of its early T-type coaches were converted for wheelchair access, with 24 seats and a central wheelchair lift spreading the type to Central and Midland Scottish. Central Scottish's example is undergoing restoration at the Glasgow Vintage Vehicle Trust's Bridgeton garage. When new SBG subsidiaries were established in 1985 and Eastern lost its westernmost garages, Kelvin, Midland, Central, Clydeside and Lowland Scottish inherited Pennine 7s, Kelvin ridding itself of them as early as it could as it attempted standardisation. Not as well-known as the Leopard, they sold less quickly on the second-hand market but operators including Stevensons of Uttoxeter and Burton and North Eastern Bus Service of Newcastle standardised on the Seddon for deregulated bus work. The last examples saw out the turn of the century with Allander, Milngavie on school contracts and with Morley, Whittlesey on rural Cambridgeshire services.

Problems in operation

Drivers, particularly coach drivers, felt the Pennine 7 was over-geared, starting-off smoothly from rest sometimes causing trouble, overheating was another early fault, the radiator was mounted directly in front of the engine in mid-wheelbase and was thus shrouded by the coachwork, and in common with many Gardner-engined vehicles the throttle-pedal was regarded as hard to operate. The power-steering took several modifications and adjustments to work properly.

Morley's Of Whittlesey found their three astonishingly economical, the high-geared one of their three (RSD978R) averaging 21 miles per gallon, whilst the two-lower geared examples (NSJ19R & NSJ21R) still achieved 18mpg.

In retrospect

SBG did not fulfill Seddon's dreams. Leyland offered SBG alone a four-speed ZF manual option on Leopard which was taken between 1974 and 78 by Central, Western Scottish and the Alexander companies. Total Pennine 7 production over a decade was less than a year's Leopard production.

From 1980 the six-speed ZF was offered with the Leopard on general sale but SBG were by that time taking the Pneumocyclic.

Western and Central Scottish took the later and similar Dennis Dorchester, and they, Clydeside, Lowland, Northern, and Eastern Scottish took Gardner-engined variants of the Leyland Tiger
Leyland Tiger
The Leyland Tiger, also known as the B43, was a mid-engined bus and coach chassis which was built between 1981 and 1993. This name had previously been used for a front-engined bus built between 1920s and 1950s. It replaced the Leyland Leopard, which had been in production for over 20 years...

, by the mid-1980s a much weakened Leyland could not refuse SBG's engine preferences.

Survivors

A number of Seddon Pennine 7s have been preserved and are stored at bus museums in Scotland. Among preserved examples one of the Eastern M types survives at the Scottish Vintage Bus Museum. MSJ650P is the only Alexander M-Type bodied coach fully restored. Y-type, T-type and Plaxton-bodied examples also survive, some preserved, some in non-psv roles. Only one Pennine 7 is known to have been rebodied, former Western MSJ388P which was purchased by a Lancashire businessman in the late 1980s for conversion into a racing car transporter, the Alexander T-type body proved unsound so the businessman, Andrew Wareing, asked Duple to rebody it, they politely declined, having never bodied the type, so one of Mr Wareing's employees, aided by a friend who worked at Duple, were tasked with building a new body which features a number of Duple 320 components, this vehicle, re-registered 5887AW, has been in use as a car transporter for over 20 years.

Former Western Scottish Y Type
Alexander Y Type
The Alexander Y Type was a long-running design of single-deck bus or coach bodywork built by Walter Alexander Coachbuilders of Falkirk, Scotland. It was built on a wide range of chassis between 1962 and 1983...

BSD 857T has been converted into a motorcaravan.

On television

Two former Eastern Scottish Seddon Pennine 7s featured in the BBC Scotland play Donovan Quick.

Books

  • Hillditch, A Further Look at Buses, Shepperton, 1981
  • Booth, The British Bus, Today and Tomorrow, Shepperton, 1983
  • Curtis, Bus Monographs 5: Bristol RE, Shepperton, 1987
  • Brown, Plaxton a Century of Innovation, Hersham, 2007

Magazines

  • Parke (ed), Buses, Shepperton, passim 1972-81
  • Parke (ed), Buses Extra, Shepperton, passim 1977-81
  • Morris (ed), Buses Extra, Shepperton, passim 1982-92
  • Booth (ed), Classic Bus, Edinburgh, passim 1992-2005
  • Stenning (ed), Classic Bus, London, passim 2005-10
  • Booth and Morris (eds), Buses Focus 20, Hersham, 2001
  • Booth (ed), Classic Bus Focus 100 years of Leyland, Edinburgh, 1996
  • Millar (ed) Buses 646, Shepperton, 2009

Webpages

  • Bus Lists on the Web
  • Buses on Screen
  • Scottish Vintage Bus Museum
  • Glasgow Vintage Vehicle Trust
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