| 词条 | BSA Model L |
| 释义 |
|name=BSA Model L |image=BSA Model L.jpg |aka= |manufacturer=BSA |parent_company= |production= 1923 |predecessor= |successor= |class= |engine=349 cc single cylinder side valve |wheelbase={{convert|55|in|cm}} |length= |width= |height= |seat height= |power= |torque= |dry weight= |fuel_capacity= |fuel_economy= |transmission=three-speed, hand change gearbox to a chain final drive }} The BSA Model L is a British motorcycle manufactured by Birmingham Small Arms Company (BSA) at their factory in Armoury Road, Small Heath, Birmingham from 1923/1924. DevelopmentLaunched in 1923 were BSA's new 350cc sidevalve was designated the Model L and fitted with a three-speed, hand-change gearbox and chain final drive.[1] This BSA was introduced as one of the last flat-tank models, the Model L that was available with either a side-valve or an overhead-valve 349cc, four stroke engine with bore and stroke of 72mm x 85.5mm. The overhead-valve model was the company’s first such model but it otherwise shared all of its running gear with its side-valve stablemate including a three-speed, hand-change, constant-mesh gearbox, an Amac carburettor and chain final drive. Front and rear braking was achieved by a friction pad being applied to a dummy rim built into the wheel spokes – not an uncommon practise on veteran machines and derived from building similar brakes onto a belt-drive rim. Although lubrication was achieved with a mechanical oil pump, the rider could adjust the oil flow depending upon the engine’s duty conditions via an adjuster mounted on the tank that included a sight glass through which to observe the flow rate. In its first year, the side-valve Model L was immediately successful. According to Pitman’s ‘Book of the BSA’: “To the sporting solo rider who asks for a ‘go anywhere’ mount, its records in the Scottish Six Day Trial and the International trials in Sweden in 1923 stand as recommendation.” When new in the UK, a side-valve Model L cost £47/10s. Racing SuccessThe BSA Model L set records in the Scottish Six Days Trial and the International Trials in Sweden in 1923.[1] See also
References1. ^1 {{cite web|url=http://www.motorbase.com/auctionlot/by-id/136354502/|title=BSA 350cc Model L26|accessdate=22 November 2009}} {{Motorcycle-stub}} 2 : BSA motorcycles|Motorcycles introduced in the 1920s |
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