Re: Cross-Flow or Loop-Charged?
In 2-strokes, loop charging and cross charging are the common methods of induction - bringing fuel into the cylinder chamber. Cross charging came first, with the design having intake and exhaust ports across from either other and the fuel traveling from the intake side to the exhaust side, crossing the dome of the piston. Loop charging was a later development (1950s or so) where the intake ports are arranged in such a way that the fuel loops under the spark plug on its way through the combustion chamber. Results in a more efficient burn and more power per cubic inch.
