1/2A6-2 Engines

The Estes 1/2A6‑2 engine is a go-to choice for educators introducing rocketry in a safe, accessible, and engaging way. This standard-size 18 mm engine is designed for model rockets weighing less than 2 oz (57 g), making it ideal for elementary and middle school STEM programs. With low thrust and controlled altitude, it supports confident learning in small recovery areas such as schoolyards and sports fields. Each pack includes three engines, four igniters, and four starter plugs—conveniently packaged for classroom use.

With a total impulse of 1.25 N‑s and a gentle thrust profile, the 1/2A6‑2 allows students to observe key flight phases without the rocket soaring out of sight. The 2-second delay after motor burnout ensures the ejection charge activates near apogee, promoting consistent parachute deployment and safe recoveries. These characteristics make it easy to run repeated launches with minimal risk of rocket loss or damage.

Compatible with a wide range of Estes education kits—including Alpha III®, Generic E2X®, and Wizard™—the 1/2A6‑2 helps students apply physics and engineering concepts in real time. Whether you’re teaching Newton’s Laws, aerodynamics, or data collection, this engine enables predictable, measurable results that support your lesson objectives.

Built for safety and consistency, the 1/2A6‑2 engine is a classroom-friendly option trusted by teachers, science coordinators, and STEM leaders nationwide. It empowers educators to create engaging, hands-on aerospace experiences that leave a lasting impression—and spark students' interest in science and engineering.

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