1971 Triumph Bonneville

[Rough Edge racing]

BSA didn't disappear until 1975 , and at the time of the design change to the push in pipes , BSA still owned Triumph . The OIF , comical hub brakes , internal spring Ceriani style forks , and even the abandoned Fury/Bandit project were all basically BSA designs . Edward Turner was spinning in his grave .

 Dusty

All of those mistakes came out out Umberslade Hall, the design wing of BSA created to improve the product. But actually just designed worse crap ....Triumph was always a profitable company unlike the BSA giant black hole that sucked the life out of everything it touched. The Fury was a redesign of an earlier Turner project. But it reality it was no where near the quality of a Honda 350.
 The push in Triumph pipes were on the first 750 in 73 and maybe the 72 650's....

[Rough Edge racing]

 The BSA A10 was quite a decent bike and probably better than a Triumph. But  BSA had big time issues with quality control and their workers.  But there's no way the Brits could compete using 1930's designs , worn out tooling and militant workers. Just like the US auto industry in the 70's, poor build quality and dull tooling to maximize profits for the company and workers...