1938 Velocette KSS

1938 VELOCETTE KSS AT THE CUTTING EDGE
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. The 1938 KSS was the first year that electric lighting, an illuminated speedo and an electric horn became standard equipment, rather than an option.

K-SERIES OHC ENGINES EXPENSIVE TO BUILD
While Velocette was well ahead of most of its competition, engine technology-wise, with the radical OHC K-series bikes (KSS and KTT), the exotic shaft-driven bevel drive system that drove that overhead cam was complex and difficult to assemble. They required hand assembly by skilled craftsman, which slowed production to a crawl and drove costs up. The answer was the more conservative and cheap-to-build OHV M-series bikes which would become Velocette's biggest sellers, and replace the K-bikes.

1938 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

Air-cooled OHC single

348cc / 21.3ci

74mm X 81mm

7.0:1

Amal

Bodine magneto

19 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



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Check out these VELOCETTE BOOKS





Velocette Motorcycles



BOOK OF THE VELOCETTE ALL SINGLES & TWINS 1925-1970



Velocette: Production Motorcycles (Crowood Motoclassics)



Velocette Motorcycles - MSS to Thruxton: New Third Edition



The Velocette Saga: The Story of a Great Motorcycle



Velocette 350 & 500 Singles: All 350 & 500cc models 1946-1970 (Essential Buyer's Guide)



Always in the Picture: History of the Velocette Motorcycle



Velocette: The Racing Story (Crowood Motoclassics)



Velocette (Illustrated Motor Cycle Legends)



Velocette - Technical Excellence Exemplified


For more like this, please visit our

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Last updated 12/10/17

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