The Estes 1/2A3-2T is a compact 13 mm single-stage model rocket engine designed for lightweight mini rockets. Its quick thrust profile and two-second delay make it well suited for small models that need a fast launch followed by a short coast period before recovery system deployment.
Each package includes four 1/2A3-2T engines, four starters, and four starter plugs, providing the essential engine and ignition components needed for multiple launches with compatible model rocket equipment.
The 1/2A3-2T delivers a total impulse of 1.25 N-sec with a maximum thrust of 8.30 Newtons or 1.9 pounds. Its thrust duration is approximately 0.30 seconds, followed by a two-second delay before ejection. The engine is rated for rockets with a maximum lift weight of 2.0 ounces or 57 grams.
Each engine measures approximately 1.75 inches or 4.4 centimeters long and has a 13 mm diameter. The engine weighs approximately 0.23 ounces or 6.5 grams and contains approximately 0.07 ounces or 1.9 grams of propellant.
The 1/2A3-2T is suitable for compatible lightweight mini rockets, including models such as the Mini Alpha, Mini Bertha, Mini Der Red Max, Mini Mod, and Mini Honest John. Its compact size and predictable performance make it a practical choice for educational projects, hobby launches, and small-field flying. 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.
