C11-3 Engines

The Estes C11‑3 Engines 2‑pack is ideal for educators introducing hands‑on rocketry in classrooms and small group settings. Designed with a strong initial thrust and a 3‑second delay, this engine delivers a safe, observable flight path from lift‑off to parachute deployment—perfect for spaces like schoolyards or constrained launch fields. Its compact yet powerful performance helps students explore fundamental science concepts like force, motion, and aerodynamics in a memorable way.

This engine supports rockets up to 6 ounces and consistently lifts mid‑sized models with precision. The 3‑second coast phase ensures recovery systems deploy shortly after reaching apogee, keeping launches within a teacher’s line of sight. This is particularly valuable when visibility and recovery accuracy are essential during STEM lessons or demonstrations.

Included with each set are 2 C11-3 engines, 2 starters, and 4 starter plugs. These components are compatible with standard Estes launch systems, making setup straightforward for educators. The extra plugs support multiple launch attempts, reducing downtime and keeping students focused and involved throughout the activity.

By incorporating the C11-3 into your rocketry lesson plans, you’re giving students more than just a launch—they gain real-world insight into physics, engineering, and problem solving. It’s a simple yet powerful tool for transforming classroom theory into practical, high-flying learning.

ATTENTION: Residents of California, New Jersey, Rhode Island and North Dakota please review the Terms of Sale for state specific restrictions or Click Here for State Specific Restrictions.