Technical Problems
The Sarich orbital engine has a number of fundamental unsolved problems that have kept it from becoming a usable engine. Some key components cannot be cooled and others cannot readily be lubricated, so it is very susceptible to overheating. At one press conference at which Sarich presented the engine, automotive engineer Phil Irving (designer of the Vincent Motorcycle and Brabham Formula One engines) pointed out a number of technical difficulties.
Read more about this topic: Orbital Engine
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