This Fox 35 Engine is a two stroke control line glow engine without muffler. It was strong and noisy companion of Control Line model Flite Streak from Topflite that took to skies in 1986.

Control line flying is a test of mind and body coordination.  Since, most of the time a control line model flies too close to the ground, approx 5 to 10 feet, even  a small distraction or mistake may not be tolerated by the model at all.

That's a great engine