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 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 | |
| 1938 | 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 | 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. | |
