The Estes A8-3 engine is a reliable choice for launching standard-size model rockets to impressive heights. Designed for rockets weighing less than 3.0 ounces, it delivers consistent thrust and a smooth 3-second delay for parachute deployment.
Perfect for beginners and seasoned rocketeers alike, the A8-3 offers a balanced flight profile that makes it ideal for classroom demonstrations, youth group launches, and everyday backyard fun.
The A8-3 is one of Estes’ most popular engines—and for good reason. With a powerful yet manageable thrust profile, it’s designed to launch lightweight model rockets up to 500 feet. The 3-second delay allows the rocket to coast at apogee before deploying the recovery system, resulting in picture-perfect flights and gentle landings.
This engine is ideal for use in smaller, single-stage rockets and offers a great introduction to model rocketry. Whether you're learning the basics or refining your skills, the A8-3 provides a reliable and predictable flight experience that helps build confidence with every launch.
Each A8-3 engine is precision-manufactured for consistent performance, so you can trust it to deliver a thrilling liftoff and smooth recovery every time. It's an excellent option for schools, camps, STEM programs, or anyone seeking a safe and satisfying launch.
The A8-3 three-pack includes everything needed for multiple flights, including starters, plugs, and recovery wadding. Just add your favorite Estes rocket and a launch system, and you're ready to take off.
Total Impulse: 2.50 N-sec
Time Delay: 3 Seconds
Max Lift Weight: 3.0 oz (85 g)
Max Thrust: 10.70 Newtons (2.4 lbs)
Thrust Duration: 0.80 Seconds
Length: 2.8 in. (7 cm)
Diameter: 18 mm
Weight: .55 oz. (15.6 g)
Propellant Weight: 0.14 oz (4.1 g)
