Originally Posted by barry12345

I have over the years seen a lot of engine design variations. Although never cam engines. Interesting.

There are still a few older Mazda products for sale locally with wankle designed engines. Our common engines today remain the same basically after over a hundred years for fundamental design principals.

The other oddity of my time was the three cylinder two stroke engines in the German DKW cars. There were a few in my neighborhood where I grew up.