The Estes C11-3 is a 24 mm single-stage model rocket engine designed for mid-sized rockets weighing up to 6.0 ounces or 170 grams. Its strong thrust and three-second delay make it well suited for heavier models that need dependable acceleration without the higher performance of larger D-class engines.
Each package includes two C11-3 engines, two starters, and four starter plugs, providing the essential ignition components needed for multiple launches with compatible model rocket equipment.
The C11-3 delivers a total impulse of 10.00 N-sec with a maximum thrust of 22.10 Newtons or 4.9 pounds. Its thrust duration is approximately 0.80 seconds, followed by a three-second delay before ejection. This combination provides a strong boost and predictable recovery timing for compatible rockets.
Each engine measures approximately 2.75 inches or 7 centimeters long and has a 24 mm diameter. The engine weighs approximately 1.13 ounces or 32 grams and contains approximately 0.44 ounces or 12.4 grams of propellant.
The C11-3 is a practical choice for compatible mid-sized rockets, scale models, payload flights, and other applications where controlled altitude and dependable performance are important. 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.
