I imagine that, back in the day, the CB72 would have been a popular choice to import into the UK; the rationale being:
- It
could be legally ridden by budding motorcyclists with just a 'provisional' licence*
looked and performed like a proper motorcycle**
is a 'twin'***
has looks that are indiscernible from its bigger-displacement sibling****
* Back then, in the UK, one was allowed to ride a m/c under 250cc with just a provisional licence; there was no time limit surrounding 'passing the test' and one wasn't compelled to undergo CBT (Compulsory Basic Training); L-plates were required to be clearly displayed, back & front and carrying a pillion passenger was reliant upon him or her having passed
their m/c test. Upon 'passing' one could jump on any displacement of m/c (at 16) and ride, ride, ride! This law was
first changed -- I can't be sure as to when but I believe it was the late '70s -- whereby a 16-year-old could ride only a 50cc moped and then, I believe, up to 125cc after the age of 17 until he/she passed the test. Maybe G-man, phactory Phil, Simon (Fisher) or Dennis could clarify here? It didn't apply to me and I had no kids 'till '81, so no interest in the law change.
**We had decrepit 4-stroke 250cc singles (BSA C15 & Barracuda -- I'm sure Matchless, AJS
et al tried too -- along with the 200cc Triumph Tiger Cub)
***We
also had a 4-stroke twin: the very woolly and wheezie Norton Jubilee! Our 2-stroke twins (Ariel Leader & Arrow, plus '50s Villiers 2T-engined leftovers) weren't particularly inspiring either. The importation of the CB72 was a no-contest invasion!
****Every '60s & '70s self-respecting motorcycling 16-year-old would have been desperate for his mates & their girlfriends to think that he had a 'big bike'! Britain had little that could compete with the 305 -- short of the 500cc BSA A7 & subsequent A50, or Triumph's later 5T Twenty One, 5TA Speed Twin or Daytona -- and the 350cc 3TA Tiger 90 stood little chance.
Sorry if I've opened up a festering wound, guys. It's all in a good cause, though!