This is a follow-up to my previous Experimental Rotary ICEs video. It shows the family tree & close-ups of the prototypes that haven't been cannibalized for spare parts. The earliest sketches for some of these models date back to the early '80s. Work has been carried out since then whenever time & $ permits. Thousands of man-hours later & with the benefit of hindsight, many of these designs are admittedly naive. However, they were a necessary part of the learning process. The work continues & the current designs are more refined. The latest model produces 1/5 horsepower on the dynamometer & it does so without requiring any lubrication, or a cooling system. Performance should improve with the next generation seals. Some models have been dry run (no combustion) for months at a time without any problems. The wear properties of graphite-on-polished-steel are truly unbelievable! The advantages of being able to modulate the vane engagement (for ganging up & throttle control) is very noteworthy. Three new designs are currently on the drawing board. One uses a single rotor & 2 vanes to compress & burn the charge. In another version, the vanes pivot rather than slide. A third design uses graphite lined metal rotors & vanes. The purpose of this program is to develop more fuel efficient engines. These videos are intended to inspire & motivate interested parties into building their own prototypes for the benefit of all. -Dave

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