It was just an idea for a simpler build, it would all stay fitted to std engine mounts, - just remove parts so one cylinder went. Heck sounds a bit like Chris's 600-450 conversion.
There was a chap that fitted a VTR cylinder to a CB125 bottom end (back in the day when 4 bangers were only allowed 125cc), but never heard much more of it.
Of course there will be more effective engines which will be lighter; but can be expensive & time consuming to develop a 2 stroke.
Don't you look at my accountant.
He's the only one I've got.
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