“I just dont see the advantage of this thing”
Weight is one. I think the article said it weighs around 1/3 of the Honda GX-240 engine used in lawn equipment and has higher output also. What they end up doing with the valve train design is going to be make or break — rotary valve or what. Again, from memory, I believe the prototype rotary valve design had insurmountable flow problems but my 1968 Yamaha 100 thought it flowed fine, just fixed timing.
“Weight is one. I think the article said it weighs around 1/3 of the Honda GX-240 engine used in lawn equipment and has higher output also. “
They fake the numbers. I also don’t believe their 42% efficiency claim.