Other than being made in Taiwan in the early 70's and badged as the Nova SS or RS, I can't find much either, appears to be a nice bike though. Looks like it uses the Honda QA50 or Z50 style brake backing plate, the red one appears to have a Tecumseh HS35 or HS40, the blue one seems to have an HS50 judging by the size of the engine vs. the frame in the pictures below, probably the difference between the RS and SS I would say.
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