The BSA Rocket Three
was the first true modern superbike
and the last major motorcycle developed by the original (Triumph Engineering Co Ltd
) Triumph company. It was badge-engineered
to be sold under both the Triumph and BSA
The Rocket3/Trident was the first-step development of Triumph Motorcycles
' plan to move on from the basic vertical twin
. The engine was to give the 750 cc power required by the US market while avoiding the vibration associated with an increase in capacity of the existing parallel-twin design.
During its production run BSA fell into financial troubles, and over the course of the official seven year model run approximately 27,480 Rocket3/Tridents were produced. By comparison, around a quarter of a million Honda Goldwing
motorcycles were manufactured during its first seven years.
Although designed in the mid-1960s, the engine of the BSA Rocket3/Triumph Trident was based heavily on Edward Turner
’s Triumph two-cylinder 500 cc Speed Twin
of 1937 and the next year's sports model Tiger. Because of this, the three-cylinder Trident is sometimes known as the “Tiger 100 and a half”. However, when the bore and stroke are considered it is actually more like three C15 engines: the unit-construction T100 has a short stroke, unlike the triple's dimensions. The pre-unit 500 was , as was "P1" - the first prototype Triple. When the rest of the engine layout is... Read More