Hi all,

Some 1960's Commer truck's used a 3 cylinder opposed piston 2 stroke supercharged diesel, that had a single crankshaft at 90 degree's to the cylinder's and below them, the piston's had conrod's connected to rocker arm's that had another set of conrod's connecting to the crankshaft !



This engine was known as a "Commer screamer" as it had a great sound.

Other than a rotary engine this was the last "unusual" type of engine on our road's.

The Deltic engine was made by Napier.



Andy