While it is technically possible to create a 750cc single-cylinder engine for a motorcycle, it is not a common configuration for engines of that displacement. Single-cylinder engines are typically found in smaller displacement motorcycles due to their simplicity and cost-effectiveness.
750cc engines are more commonly found in twin-cylinder, inline-four, or V-twin configurations. These configurations provide smoother power delivery, better balance, and reduced vibration compared to a single-cylinder engine of the same displacement.
That being said, there are some examples of larger displacement single-cylinder motorcycles. For instance, the KTM 690 Duke is a popular model with a 690cc single-cylinder engine. However, it's important to note that such designs require careful engineering and balancing to mitigate vibrations and ensure reliability.
In summary, while it is technically feasible to create a 750cc single-cylinder motorcycle engine, it is not a common configuration due to the inherent challenges in balancing power delivery and minimizing vibrations at higher displacements.