Interesting! My statement was based on what I read in the Museum of Retro Tech: http://www.douglas-self.com/MUSEUM/museum.htm http://www.douglas-self.com/MUSE

Interesting! My statement was based on what I read in the Museum of Retro Tech: http://www.douglas-self.com/MUSEUM/museum.htm http://www.douglas-self.com/MUSEUM/museum.htm Many designs have been tried over the years, but suffer from oil leaks, low compression or high manufacturing costs.