The Tribsa, an alternative to the Triton, was a Triumph engine in a BSA frame but other frame and engine combinations were also made, with Norbsa having a BSA engine in the Norton featherbed frame.
The Tribsa was a Triumph engine in a BSA frame. The Tribsa was an alternative to the Triton. Other frame and engine combinations were also made. This was with Norbsa. This Norbsa was having a BSA engine in the Norton featherbed frame.