20cc four stroke RC engine

grabcad

Initially, I designed a single cylinder 10cc engine in Solidworks based on Nemitt's blueprint from Model-Engineer magazine. Later, I contemplated reworking it into a dual version. In hindsight, altering the angle to 75 or 60 degrees could have shortened the timing belt requirement. A flat twin configuration is another possibility; it would necessitate a revised crankcase and an elongated nose for double belt usage. The required components are already available, so enthusiasts can attempt this project. Perhaps I'll give it a try if time allows. Please find a render showcasing the potential appearance of a flat twin version.