Estes C11-3 Model Rocket Engines
010025 C11-3 Model Rocket Engines 24mm
Estes C11-3 Rocket Engines Plugs and Ignitors
C11-3 24mm Model Rocket Engines
Estes C11-3 Model Rocket Engine
C11 Model Rocket Engine Thrust Curve Chart
Model Rocket Thrust Curve Example

C11-3 Engines

SKU: 010025
$10.99
Sale Sold out

Estes C11-3 engines deliver strong thrust and a short 3-second delay, making them a great choice for mid-sized classroom rockets and safe, trackable recoveries. These model rocket engines are designed to help students observe peak altitude and ejection timing with clarity.

Each pack includes 2 engines, 2 starters, and 4 plugs—everything needed for effective hands-on STEM instruction and small-group rocket launches.

Includes:
- 2 C11-3 Engines
- 2 Starters
- 4 Starter Plugs

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

Overview

The Estes C11‑3 Engines 2‑pack is ideal for educators introducing hands‑on rocketry in classrooms and small group settings. Designed with a strong initial thrust and a 3‑second delay, this engine delivers a safe, observable flight path from lift‑off to parachute deployment—perfect for spaces like schoolyards or constrained launch fields. Its compact yet powerful performance helps students explore fundamental science concepts like force, motion, and aerodynamics in a memorable way.

This engine supports rockets up to 6 ounces and consistently lifts mid‑sized models with precision. The 3‑second coast phase ensures recovery systems deploy shortly after reaching apogee, keeping launches within a teacher’s line of sight. This is particularly valuable when visibility and recovery accuracy are essential during STEM lessons or demonstrations.

Included with each set are 2 C11-3 engines, 2 starters, and 4 starter plugs. These components are compatible with standard Estes launch systems, making setup straightforward for educators. The extra plugs support multiple launch attempts, reducing downtime and keeping students focused and involved throughout the activity.

By incorporating the C11-3 into your rocketry lesson plans, you’re giving students more than just a launch—they gain real-world insight into physics, engineering, and problem solving. It’s a simple yet powerful tool for transforming classroom theory into practical, high-flying learning.

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 C11-3 Rocket Engines Plugs and Ignitors

Compatible Rockets

Technical Specifications

Technical Specifications

  • Total Impulse

10.00 N-sec
  • Time Delay

3 Seconds
  • Max Lift Weight

6.0 oz (170 g)
  • Max Thrust

22.10 Newtons (4.9 lbs)
  • Thrust Duration

0.80 Seconds
  • Length

2.75 in. (7 cm)
  • Diameter

24 mm
  • Weight

1.13 oz. (32 g)
  • Propellant Weight

0.44 oz (12.4 g)
C11 Model Rocket Engine Thrust Curve Chart

Customer Reviews

Based on 2 reviews
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G
Gary Legates

Flew like they They worked as advertised !
That is what you expect when it has the Estes name on it. Thank you! supposed to. :-)

J
Jim Hodges
We are back

60 years ago I took an order form to my Mo TV her to have her write a check for some toy rockets I wanted, and she did it! She had no idea.
Many years ago my boys were introduced to my old hobby. And this Christmas my oldest son is introducing his son to real rockets and reigniting his passion for the hobby. Bigger boys need bigger toys.

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!

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!
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