Oldtimer gallery. Motorcycles. BSA M20.
79k photo of 1940 BSA M20 ot Tony Messenger
BSA M20 (WM20)

Years of production: 1937-1940-?
Overall production: 126334(?) units
Engine: own 13hp/4200rpm, 1-cyl, ?-stroke SV 496cc
Bore/Stroke: 82/94 mm
Compression ratio: ?:1
Length: 86in, width: 29in, height: 39in, saddle height: ?
Wheelbase: 54in, road clearance: ?
53k photo of BSA M20Frame: rigid, tubular
Carburetter: Amal 76/014 PS
Ignition: ?, ?Volt
Gearbox: 4 speed, foot-change
Ratios: I - ?; II - ?; III - ?; IV - ?
Chain
Mechanical brakes
Rear axle ratios: solo - 4,56, sidecar version - 5,62
19k photo of 1940 BSA M20Weight: 292 lb (solo)
Maximal speed: ? km/h
Tyres: 3,25x19 inches
Fuel tank capacity: ? L
Fuel consumption: ? L/100km
Price: ?
This motorcycle was one of lend-lease models shipped to the USSR. Still many survived.
Photos are from:
Tony Messenger (California, USA), owner of this BSA on the upper picture.
Vintage Imports.
MS Webmasters.
What else in the net:
The BSA WDM20 website (in English), the Netherlands.
You are welcome to write me by E-mail Contact. Andrei Bogomolov.
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Last updated 2 IX 2001.