Jay wrote:

Yes, the 2 stroke burns 50% more fuel for the same HP, but the point I
was trying to make was that since the 2 stroke powered aircraft can be
built lighter all around (on account of its lighter engine), you can
use a smaller engine (which consumes less fuel) and still fly the same
payload. This relationship is unique to aircraft since weight means
SO much.

Except that they don't burn 50% more fuel for the same horsepower.

Matt