PGO Cooking Up A Rotary Valve Engine

From AutoBlogGreen

Taiwanese scooter manufacture PGO, which has partnered up with RCV Engine Ltd. of the U.K. The two firms are working on rotary valve technology for scooters. So far, the rotary valve engines have really only made waves in the model aircraft industry, a market that RCV is very active in, but PGO believes the engines in the 125-150cc range could power its scooters.