The Estes 1/2A3-2T is a single-stage 13 mm mini engine designed for lightweight model rockets. It delivers a total impulse of 1.25 N-sec, maximum thrust of 8.30 N (1.9 lb), a thrust duration of 0.30 seconds, and a 2-second delay to provide quick liftoff followed by a short coast period before recovery deployment.
Designed for rockets with a maximum lift weight of 2.0 oz. (57 g), the 1/2A3-2T is well suited for compact models and small-field flying. Compatible applications include mini rockets such as the Mini Alpha, Mini Bertha, Mini Der Red Max, Mini Mod, and Mini Honest John.
Each engine measures 1.75 in. (4.4 cm) long and 13 mm in diameter. Engine weight is approximately 0.23 oz. (6.5 g), including 0.07 oz. (1.9 g) of propellant.
Each package contains four 1/2A3-2T engines, four starters, and four starter plugs, providing the components needed for multiple model rocket launches. These engines are suitable for recreational flying, educational activities, and STEM-related model rocketry applications.
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 should always be handled and operated according to the manufacturer's safety instructions and only for their intended use.
