In 1978 aeronautical engineering students (maybe with Iranian Aircraft Industries) were assembling 6 Rotorway Scorpion kits at Ghale Morghi airport in Tehran. The Scorpion had a tail rotor driven by multiple V-belts.
The Scorpion was one of the first kit helicopter which really flew, but I don't know if these were ever finished and if they were if anybody was brave enough to fly them
