1/2A6-2 Standard Engines for Model Rockets (2) (EST10016)

The Estes 1/2A6-2 is an 18 mm single-stage model rocket engine designed for lightweight rockets weighing up to 2.0 ounces or 57 grams. Its quick thrust profile and two-second delay make it well suited for beginner models, educational projects, and flights in smaller launch areas.

Each package includes three 1/2A6-2 engines, four starters, and four starter plugs, providing the essential ignition components needed for multiple launches with compatible model rocket equipment.

The 1/2A6-2 delivers a total impulse of 1.25 N-sec with a maximum thrust of 8.90 Newtons or 2.0 pounds. Its thrust duration is approximately 0.30 seconds, followed by a two-second delay before ejection. This combination provides a quick launch followed by a short coast period before recovery system deployment.

Each engine measures approximately 2.75 inches or 7 centimeters long and has an 18 mm diameter. The engine weighs approximately 0.48 ounces or 13.6 grams and contains approximately 0.10 ounces or 2.7 grams of propellant.

The 1/2A6-2 can be used with compatible lightweight model rockets, including models such as the Alpha III, Hi-Flier, Wizard, and Astron Constellation. Its modest power and predictable performance make it a practical choice for educational rocketry, beginner flying, STEM activities, and other small-model applications. Always verify the rocket manufacturer's recommended engine configuration before use.

Purchasers and users of Estes model rocket engines are responsible for following all applicable local, state, and federal laws, regulations, and safety standards. Model rocket engines must be handled and used only as intended and in accordance with established model rocketry safety practices. Estes Industries, LLC disclaims liability for personal injury, property damage, or other loss resulting from misuse, improper handling, or unauthorized use of its model rocket engines.