Single-stage 18 mm engine: Provides reliable, consistent thrust for model rockets under 2 oz
2-second delay after burnout: Enables safe parachute recovery and prevents over stressing the rocket
Includes 3 engines, 4 igniters, and 4 starter plugs: Ready for multiple launches out of the box
Compatible with Estes beginner kits: Works seamlessly with Alpha III, Hi Flier, Wizard, and Astron Constellation
Low thrust profile: Suitable for short to moderate altitude launches and educational demonstrations
Summarized by Shop
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