HOWEVER...I had overlooked the line “must be of a type built”. In previous times the rule was “must be built from parts available in the period” and I was working on that basis. Which would be fine. BUT if there was no Rob North Commando pre ‘73 (unless anyone knows otherwise) then a Rob North Commando is not “of a type built” so I just got this wrong.
I have a distinct memory of reading a report from Daytona some time in the 70's regarding the 750 triples with a pair of 750 Triumph twins with Rob North frames in the background ; admitidley not Nortons but at least twins if that helps.
Dick Mann won the 1971 Daytona 200 on a BSA triple. If I remember rightly it was a Robb North frame.
John Cooper famously beat G.Agositini on the MV at Mallory Park race of the year, also the Ontario race in Canada on the BSA3.
P.S. someone under race rules claimed the bike for $1500, much to the annoyance of the BSA factory personnel. Wonder what it's worth today?
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