Speedway Workshop

JAP Speedway Motorcycles

The Speedway Workshop Archive includes the following pages on J.A.P dirt track, grass track and speedway machines.

  The JAP Workbench
  Year Machine Detail
  1928/48/53 OEC Three of the O.E.C Machines
  1928 OK-Supreme  JAP with magneto in front of engine
  1928 Lady The Belgian twin port machine
  1930 Wallis  350cc Wallis TT Twin Port engine
  1930  Comerford Housing L.H Horizontal Carb Motor
  1931 Dog Ear T/P  The Dog-Eared Twin Port Engine
  1931 Dog Ear S/P  The Dog-Eared Single Port (Twin Plug)
  1932 Short 4  L/H Carb-Short 4-Open Valved
  1932 Comerford Comerford with the latest Short-4
  1933 Rudge/JAP  The Short-4 housed in Rudge Frame
  1933 Suecia  The Swedish SMT-50 machine
  1933 Long Four  First with Down Draught on Inlet Port
  1937 350 JAP The 350cc 5-Stud engine
  ** 500 JAP  The 5-Stud Long and Short engines
Victor Martin Housing the JAP 5-Stud
  1948 Vic Duggan World Champion Vic Duggan Design
  1948 W.Phillips Wal Phillips Horizontal JAP
  1948 Staride  The Erskine "Staride"
  1948 Martin Housing the JAP Long 5-Stud motor
  1948 Les Wotton Housing the Long JAP 5-Stud motor
  1949 Hynes The Dave Hynes JAP
  1949 Langton Eric Langton Mk4 Machine
  1949 Sloper  Bob Lovell's Sloper JAP
  1949 Payne  Payne JAP housing converted Short4
  1955 Arnott  Frank Arnott's Desmodromic JAP
  1955 Huck Fynn With the earlier "Trombone" Forks
  1965 The Bewley George Bewley's Spring Forks machine
  1967 Erskine  Restored JAP as ridden by S.Sjosten
  1960's Mattingly With "Trombone" forks and 4A motor.
  1960's 500 JAP Using C.B Ignition not Magneto
  19?? Jackson JAP  An early Jackson JAP
  1952 Jackson-Rotrax-1  The most famed of JAP's
  1972 Rotrax-2  Rotrax with 4 valve engine.
  1962 Emstar  John Patterson's Emstar machines
  1970's ERLA SOHC 2-Valve Conversion
  1970's RO  Norwegian JAP with Weslake Head
  1975 84S  The 500cc 4-Stud motor
  1970's Street JAP Neil Street's 4-Valve Conversion.
  1970's 4 Valve The rare 4-valve DOHC engine.

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About the Speedway Workshop Archive
Classic Motorcycle Fibreglass
Classic Motorcycle Fibreglass
Tanks, seats, guards and fairings for classic bikes, cafe racers and post-classic motorcycles.