Estes A8-3 Rocket Engines Package
Estes A8-3 Model Rocket Engines
Estes A8-3 Rocket Engines Plugs and Ignitors
Estes A8-3 Model Rocket Engines
Estes A8-3 Rocket Engines Assembly
A8 Model Rocket Engine Thrust Curve Chart
Model Rocket Thrust Curve Example
Estes A8-3 Rocket Engines Package
Estes A8-3 Model Rocket Engines
Estes A8-3 Rocket Engines Plugs and Ignitors
Estes A8-3 Model Rocket Engines
Estes A8-3 Rocket Engines Assembly
A8 Model Rocket Engine Thrust Curve Chart
Model Rocket Thrust Curve Example
18mm Model Rocket Engine Assembly How-to
Estes Rockets

A8-3 Engines

SKU: 010017
$11.29
Sale

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.

Includes:
- 3 A8-3 Engines
- 4 Starters
- 4 Starter Plugs

PLEASE NOTE: You must have a physical address for delivery.

Overview 

Recommended Rockets

Specs

Reviews

Overview

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.

ATTENTION: Residents of California, New Jersey, Rhode Island and North Dakota please review the Terms of Sale for state specific restrictions or Click Here for State Specific Restrictions.

Overview

Estes A8-3 Rocket Engines Plugs and Ignitors

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Technical Specifications

Technical Specifications

  • 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)
A8 Model Rocket Engine Thrust Curve Chart

Customer Reviews

Based on 6 reviews
83%
(5)
0%
(0)
0%
(0)
17%
(1)
0%
(0)
S
Stephen Webb

Worked fine.

T
Tim Sinnott
Igniter wouldn't ignite with the 6 volt Estes controller

I was not able to ignite the igniter using the standard Estes controller (6 volt). I therefore couldn't get the engine to ignite. The controller is working based on a voltage check. Yesterday I was only able to get the igniters to heat if I bypassed the controller and used 9 volts with a 16 awg wire. I hope to try it this week with my son (who received the rockets for Christmas).

h
htmlbro
works pretty good

It's good for smaller rockets and works perfectly almost every time!

12
Estes-LP2-06

Live, Online Training and 1:1 Support

Estes Education has been a leader in STEM education for over 60 years. We know that STEM is a vital interdisciplinary topic that requires hands-on and inclusive learning. Explore these supporting materials to take learning to new heights!

Should you have need, you can meet with a member of Education team for FREE, 1:1 online support to learn rocketry basics, how to apply our curriculum, and discover unique teaching strategies. Our team is eager to answer your questions!
Get Support Now!

Learn About Model Rocket Safety!

Not sure how to safely launch a rocket with your group? Head over to our dedicated Safety instructions page for videos, support, and more!
How To Fly Safely
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