The Estes C11-5 is a 24 mm single-stage model rocket engine designed for mid-sized rockets weighing up to 5.0 ounces or 142 grams. Its strong thrust and five-second delay make it well suited for models that benefit from quick acceleration followed by a moderate coast period before recovery system deployment.
Each package includes two C11-5 engines, two starters, and four starter plugs, providing the essential ignition components needed for multiple launches with compatible model rocket equipment.
The C11-5 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 five-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 1.18 ounces or 33.5 grams and contains approximately 0.44 ounces or 12.4 grams of propellant.
The C11-5 is a practical choice for compatible mid-sized model rockets that require more thrust than smaller engine classes while still benefiting from a moderate delay before recovery deployment. 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.
