Thanks for the response, Frank. The trick seems to be combining as many of these features in one design, I guess?
This thread has flown along, and my design proposal has been buried:
http://ecomodder.com/forum/showthrea...tml#post206606
In a nutshell: a 2-stroke, rotary disk valve, opposed piston, with an offset that aligns the beginning of the power stroke with the crankpin at 45 degrees past top dead center -- oh, and only a turbo doing any compression; as there is no compression stroke...