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Increased value equals increased interest, but unfortunately, there’s been nothing to keep an unscrupulous restorer from hopping up a standard Bonneville and passing it off as an RT. Unfortunately, a lack of official records has made that impossible – until now, as Motorcycle Hall of Fame Executive Director Mark Mederski tells us in the following note.– Richard Backus “For some time, reference has been made by collectors to an official list of specially modified for AMA dirt track racing Triumph T120R Bonneville motorcycles, commonly referred to as the “RT” Bonnevilles.Sometimes they were despatched months earlier or later so the lettering system should just be taken as a rough guide. There was a short period where the engine marking matched the frame marking but the frame prefix was A50; Presumably to use up stock in store prior to the changeover.B25FS through to 1971Victor Special B44VS 1969 (C) November 1968 through June 1969 then 1970 (D) July 1969 to July 1970Shooting Star B44SS 1969 (C) November 1968 through August 1969 then 1970 (D) July 1969 through July 1970Gold Star 500 B50SS 1971 to 1972Victor 500 B50T 1971 to 1972Victor MX B50MX 1971 to 1973Early post war machines up to Z series had the frame stamped similar to the plunger or sprung frames e.g. Machines still in stock in the 1967 season (about 1000) were resold in the 19 season.“If you have a machine you feel may be from the 200-and-some machines in the batches of RTs prepped on the east and west coasts we will compare those numbers to the lists for you.
See contents and order aftermarket Johnson Evinrude outboard repair manuals. Your Evinrude outboard model number can usually be found on the nameplate located on the motor or the mounting bracket.
all A series models have A7 or A50 prefixes with the exception of the Rocket Gold Star and Super Flash.
Owners with late model BSA's can easily identify the month and year of their machine as the factory adopted a dating system for frame and engine numbers for the 1969 season models.
These returned machines are shown with a cross at the beginning of the despatch book record; they then reappear at the end of the book with the revised despatch date.
The 1969 models are identified by the adding of an extra 0 at the end of the frame marking putting the number series into the 100,000's.