C11-3 Model Rocket Engines

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The Estes C11-3 Engines deliver powerful, reliable thrust for mid-sized model rockets. With a total impulse of 10.00 N·s and a 3-second delay, they’re perfect for heavier rockets t hat need a strong boost without reaching extreme altitudes. Ideal for intermediate and advanced rocketeers, the C11-3 bridges the gap between B and D engines, offering controlled, consistent flights and smooth recoveries. Each pack includes 2 engines, 2 starters, and 4 starter plugs, giving you everything needed for multiple launches. Whether you're flying a scale model, testing a payload, or operating within field height limits, the C11-3 provides dependable mid-power performance every time. Power your mid-sized model rockets with confidence using the Estes C11-3 Engines. These powerful motors are designed for launches that require more thrust than a standard B engine but don’t need the altitude of a D-class engine. With a total impulse of 10.00 N·s, the C11-3 provides reliable, solid acceleration and a controlled 3-second delay before ejection—ideal for rockets with larger airframes or heavier payloads. The 3-second delay gives rockets just enough time to reach peak altitude before deploying the recovery system, ensuring safe and consistent descents. Perfect for mid-weight kits or scale models, the C11-3 bridges the gap between lower and higher power flights, making it a versatile choice for rocketeers looking to optimize performance without overshooting field constraints. Each pack includes 2 C11-3 engines, along with 2 starters and 4 starter plugs, so you’re ready for multiple successful launches right out of the box. Count on the Estes C11-3 for dependable mid-power performance that takes your model rocketry experience to new heights. ATTENTION: Estes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines. Includes: 2 × C11-3 Engines 2 × Starters 4 × Starter Plugs PLEASE NOTE: You must have a physical address for delivery.Note: Ships via USPS Ground Advantage Show more