As outlined above in the early 1990s UC Berkeley Professor Antony K. Oppenheim, offered to assist mechanical engineer Jim Duncalf who owned a small engineering firm, Advance Machine Technologies in designing a more efficient internal combustion engine based on cam-actuated pistons.

    To help solve some of the project's many mechanical issues, Duncalf consulted with the famous retired mechanic Smokey Yunic.  Once the mechanics of the cam system were proven to be sufficiently robust the team was joined by engineer Mark Beierle of Earth Star Aircraft Company.  Mark was responsible for several design changes and built and tested three fully operational prototypes.  Many years later Duncalf moved to Vietnam and eventually was joined by Pham Duy Tung to assist in building the last prototype and design the final RE design.   The sixth prototype was to test the most recent design changes and new materials.  This test prototype was built in Ho Chi Minh City, Vietnam. Kamtech SA is a dba of the two remaining principals.

    The current design has also had significant design input from Professor Huynh Thanh Cong, who teaches Internal Combustion Engine technology, at the Ho Chi Minh City University of Technology.