Skyfire 4.05

Skyfire 4.05 by Larry Renger is an advanced 1/2A Control Line model designed for aerobatic competition, featuring a 230-square-inch forward-swept wing and modern construction techniques.

Skyfire 4.05

Skyfire 4.05 by Larry Renger is an updated 1/2A Control Line model designed for competitive aerobatics, featuring modern construction techniques and improved performance.

Cox Engines

Like the Project Three-Way series, this article resulted from a reader suggestion. Millions of 1/2A engines have been produced over the years; the lion's share have been produced by Cox for its line of ready-to-fly control line models. Many of these engines are still in garages and attics across the land, and are still usable. We asked Larry Renger to discuss the evolution of these engines as well as their care and feeding.

Pages