All About Two-Cycle Engines - Part 2
LAST month I explained the design and operating characteristics of model engines. This section will discuss tuned pipes and new engines. Tuned Pipes: Most of you are aware of the R/C Pattern World Championships and the models used in such competition. Many of the competitors are using tuned pipes on their 60 RC engines. The rules specify that an effective muffler or silencer must be used, or at least your engine cannot exceed a certain noise level. The tuned pipe is a very good muffler, and is about the only type that does not reduce engine power. In fact, it can increase your engine's power by several hundred rpm if fitted properly. Here again, tuned pipes for model engines originated in control-line speed competition.
