I apologise if this has been covered before, but my search did not bring up any results.
Back in (I think) the late 60s "Motorcycle Sport" ran an article by Leonard Setright (normaly signed LJKS) on the racing 90plus. He owned one of these machines and the article was well up to his normal standards. Despite searches at autojumbles I've never located a copy.
If anyone has a copy & could scan/email I would much appreciate it. Please send a PM for my email.
Many thanks, Dave.