Analysis of information sources in references of the Wikipedia article "Sıralı iki silindir motor" in Turkish language version.
Unmachined forging of a 270-degree crankshaft for parallel-twin engine. (Honda)
...the America utilizes a 270-degree crank. That gives the America a lumpier cadence at idle that's a fair replica of a V-twin beat, although updated balancer shafts keep the vibrations under control.
