Last weekend I took my BSA M20 to a show / meet of Nortons and BSA's in Southern Sydney, and managed to get a few pictures of the original rocket 3!
To my understanding, BSA made the original rocket 3 back in the 60's, however it was owned by Triumph by then, so was really a BSA badged Triumph. (Apparently not!, see posters below)
The triumph hurricane was actually supposed to be the new bsa rocket 3 redesigned by Craig Vetter. Bsa went under just before it was supposed to come out. That’s when triumph picked it up...I read that somewhere.
While the Rocket 3 and Trident were very similar in appearance there were differences - the Rock used slanted cylinders the Tridents were vertical, different frames,