There are three arrangements which may be used for an engine ... The angle for two-, four- and eight-cylinder engines is usually 90 . For six- and twelve-cylinder engines the angle is usually 60 .

This represents the cylinder arrangement of an inline engine. Now, take the closest can and lay it on its left side, pivoting the can on its edge without it leaving the surface of the table.

The same goes for six-cylinder engines, which are experiencing a comeback as inline engines but can also be found in other arrangements. While inline engines have a number of important benefits ...

After some testing, he discovered he could increase efficiency by constraining the cylinder with a slider ... could start experimenting with engine arrangements and geometry.