1947 Velocette KSS


1947 Velocette KSS

1947 VELOCETTE KSS BACKGROUND
The Velocette KSS debuted in 1925 as an OHC (overhead cam) 350cc air-cooled single. Being OHC placed it at the cutting edge of engine technology at a time when most machines still used side-valve designs or pushrods. The name KSS breaks down to the K for overhead cam (the German spelling is kam), and SS for Super Sport. It made 19 horsepower at 5,800 rpm. The KSS was completely redesigned for the 1935 model year, making everything after a Mark II through the 1948 model year. Part of the bevy of improvement that went into the Mark II was a new aluminum alloy cylinder head with fully enclosed valve gear. The 1946 Velocette KSS was the first year of renewed civilian production, after the end of World War II, and it was largely a carry-over from the pre-war models. Improvements were made as production continued. The 1947 Velocette KSS now could be ordered (as an option) with Dowty Oleomatic telescopic front forks instead of the girder front forks on the 1946-and-earlier models. This must have been one of the last built with the girder forks.


1947 Velocette KSS SPECIFICATIONS

Engine type

Displacement

Bore & Stroke

Compression ratio

Carburetor

Ignition

Engine output

Primary drive

Clutch

Gearbox

Frame type

Suspension, front

Suspension, rear

Brake, front

Brake, rear

Wheelbase

Seat height

Ground clearance

Fuel capacity

Top Speed

Air-cooled OHC single

348cc / 21.3ci

74mm X 81mm

7.0:1

Amal

Bodine magneto

25 bhp

Chain

Multi-plate, wet

3-speed

Backbone w/engine as stressed member

Girder

Rigid

7″ SLS drum

7″ SLS drum

53.75″ / 136.5cm

28.0″ / 71cm

4.25″ / 10.0cm

2.25 US gal / 8.5L

90mph

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