Gas-Engine Exhaust Systems 101

Gasoline-powered two-stroke engines remain a favorite among giant-scale modelers and increasingly for smaller to medium-size models as well. Gas engines are easy and economical to operate, and today’s purpose-built RC engines are extremely powerful and reliable. The non-modeling public, however, often finds the noise generated by these engines to be objectionable and have been successful, in many cases, in closing flying fields. A carefully chosen exhaust system can significantly quiet the engine with minimal power...