standard class standard class known clan class class pacific tender steam locomotive designed use british railways locomotives constructed planned construction acute steel shortages britain order continually postponed finally cancelled publication plan equipment british railways clan class based class design incorporating smaller boiler weight saving measures increase route availability pacific type locomotive intended area operations west scotland clan class received mixed reception crews regularly operating locomotives giving favourable reports regards performance trials areas british railways network returned negative feedback common complaint difficulty steaming locomotive hard adhere reports exist suggest degree disappointment locomotives allocated class work class reality problem similar appearance standard class clan class locomotives took names highland railway clan class withdrawn service time indicating intended area operations class ultimately deemed failure british railways withdrawn survived preservation project build locomotive line number progressing frame plates presently bury awaiting parts commence assembly frame structure background initial scheme creation series british railways standard locomotives larger passenger mixed traffic types intended pacific wheel arrangement main advantage fitted wide capable burning range coal types qualities originally intended produced power groups according system power ratings inherited constituent company power groups mixed traffic service programme launched building design event proposal dropped favour updated version highly successful mixed traffic appreciated pacific power built high route availability remaining requirements demonstrated chief mechanical engineer southern railway developed lighter version large cylinder merchant navy class son advocated resultant light route availability southern railway network advantages locomotive use heavily restricted main lines scotland line demonstrated remarkable performance number highland railway line british railways trials locomotive showed potential difficult trunk route general policy eliminate far possible perceived multi cylinder locomotives equivalent cylinder pacific produced mounting smaller lighter boiler standard chassis design details arrangement consisted modified standard class boiler smaller steel cylinders modifications save weight increase route availability wider designed use cheaper imported coal utilised spread weight evenly whilst standard completed boiler lbf rated lower working pressure single chimney incorporated design create problems later small diameter reduced choke area allowed fierce exhaust blast escape reducing overall efficiency locomotive similarities rested frames running gear allowing easy parts common classes design fitted standard set valve gear systems members class equipped following experience occasional cracks appearing frame plates near spring second batch class standard built chassis rearranged similar solitary class pacific resulted locomotive riding cast steel combined frame spring carrying spring lengthened spring rear driven axle combined frame spring referred sub frames remarkably spring integrated single cast combined sub frame pony truck pivot pony truck pivot separate unlike smaller standards exhaust steam saddle standard class engines steel casting saddle original drawings confirm exhaust steam steel smaller standards construction history designed drawing offices new class constructed british railways initial order locomotives demand smaller version batch rushed construction problems british railways testing station rugby constructed steel shortages 1950s onset british railways plan initial modifications initial running quoted distinct steaming missed appointment rugby testing station late completion modifications carried notably diameter resulting better steaming increased power initially return main driving wheels block type seen changed simpler stud fitting time information gathered operational feedback crews allow modifications applied locomotives order second batch built naming locomotives choice locomotive names came engineer future railway historian desire replicate near extinct clan class representing scotland new organisation class treated special ceremony station january lord unveiled names previously highland railway locomotives planned second batch locomotives intended use allocated names previously locomotives southern england following allocated scotland allocated clan names new operational details clan class mixed reception introduced british railways locomotive crews locomotives class confined railway network fact low number class members prevented effective training locomotive crews network degree crews newer locomotives ensured entire class based predominantly depots working lives restricted circulation factors meant spent short careers resulting relatively camera shy class locomotive crews regular duties displayed liking locomotives produce good work predominant number crews unfamiliar clans found difficult handle leading bad reputation poor steaming characteristics class result rushed production factor led bad reputation clan class furthermore suffered complaints lack pulling power attributed indifferent handling firing techniques certainly help situation plan delayed correct investment undertaking relevant modifications steam passages increased diameter double chimney layout clans free steaming worthy modification capable machines handled properly feats included regular carriages assistance banking locomotive duties class frequently undertook regular turns settle route working conditions british mainline midland region short link motive power clan class proved welcome addition fleet engines performed glasgow manchester liverpool services edinburgh leeds services services finally train workings crews got class found far home territory destinations diverse newcastle bristol london clan number day remains pacific locomotive worked west highland line result successful trial held early pacific type traverse graded line having passed test tribute versatility class allowed work special trains gathering took place june year august number tested based preference meant short lived lasting month locomotive utilised services mistakenly allocated class duties clans capable able allotted trials west services mentioned earlier locomotive rejected duties grounds better good result trials standard class locomotives moved north started earnest clans downgraded secondary work maintenance initially undertaken responsibility transferred works spring varied work allocated reliability improved including working portions queen scots failed diesel locomotives plagued network time extensively freight workings scottish midland region crews regularly took class found properly running times kept ease crews rated sure available crews tested claimed clans prone slipping case pacific designs despite successes clans class generally regarded failure overall performance short aims premise british railways standard designs hard working easily maintained economical highly available purpose locomotive respects clans highly successful proposed second batch withdrawal prior publishing plan advocating change diesel traction proposal construct second batch clan class accepted authorised construction batch clans included modifications original design originally scheduled frames constructed acute steel shortages meant order continually rescheduled publication finally halted project initial new batch suggest operating kent coast trains hauling golden arrow expresses batch allocated locomotives withdrawn service december moved glasgow stored eventually moved scrapping allocation number withdrawn april whilst final shed finally scrapped august rendered class extinct locomotive served british railways fourteen years months longest serving clan numbering clans continuation standard british railways green applied express passenger locomotives lined orange black class given power classification following clans numbered british railways standard numbering system series locomotives numbered featured brass black background located smoke end working lives painted red background preservation original engines survived preservation progress constructing new locomotive batch number standard steam locomotives built years builders consider locomotive build commenced british railways standard design believes significant costs avoided required cast parts patterns held fellow members british railways present group concentrating frame components storage facility prior assembly relocation issue frame plates horn guides true new set manufactured delivered bury ltd remaining components queue aim start frame assembly late
BR Standard Class 6