Roehr Motorcycle Company hp 936cc 60° 4-stroke V-twin manufactured by US Highland was revealed in 2004. Roehr introduced the V-Roehr production motorcycle in March 2007. The bike was to be powered by a 180 hp supercharged Harley Davidson 1250 cc "Revolution" engine. Production of the first 50 bikes was scheduled to begin in 2008. Roehr Motorcycle Company Roehr Motorcycle Company was a US motorcycle manufacturer based Gurnee, Illinois. It closed down in 2012. In 1995 Walter Roehrich began construction of the 500 cc two stroke v-twin motorcycle, using Yamaha YZ250 engine parts on a prototype crankcase. The result was the 115 hp Roehr
Curtiss V-8 motorcycle Motor Cycle", the first of over 100 books in the Tom Swift series, was published shortly after the V-8 record setting run. The record setting V-8 motorcycle is now in the Smithsonian's National Air and Space Museum. The Air and Space museum lent it to the Guggenheim for the 1998 "The Art of the Motorcycle" exhibition in New York. The Curtiss OX-5 aero engine, a successor of the V-8 motorcycle engine, powered several United States civilian and military aircraft. More than 10,000 were manufactured. Curtiss V-8 motorcycle The Curtiss V-8 motorcycle was a V8 engine-powered motorcycle designed and built by