Help needed indentifying this vintage Bike

I don't know if you still have the bike? It's a 'Riga' made in Riga, Latvia from 1985-1996 (roughly) Search ' Riga motorcycles' and it'll get you there. (Factory is all Graffiti'd now and derelict). Some were fitted with a Jawa engine, last ones with a Russian designed V501 (search that too). Yours looks like the slightly earlier engine to the V501 that was renowned to be unreliable. Their all over youtube in moped form, but you'll see a common use of tanks, shocks and engines. Firm near Hull imported them, I believe. 'Champ' also made the 'Tracker' Indian built, Italian design engine, UK made frame, coming up new on ebay all the time. I have about 6 or 7 of them, all states of repair!!

Good luck. George in Lincolnshire