The Estes C11-7 engine is a reliable and powerful 24 mm single-stage motor designed to support a variety of classroom and group rocket launches. With a total impulse of 10.00 N-sec and a 7-second delay, this engine is ideal for lightweight rockets that require longer coast times and higher ejection altitudes. It provides consistent, safe thrust—perfect for students studying flight performance and recovery systems in action.
Educators appreciate the C11-7 for its versatility and ability to support lesson plans focused on aerodynamics, Newton’s Laws, and altitude tracking. The longer delay allows rockets to reach peak altitude before deploying recovery systems, making it a great teaching tool for understanding the timing and sequence of flight phases. For rockets under 4 ounces, the C11-7 offers a balance of thrust and duration that results in more visible, trackable launches—helping students stay engaged and focused on the learning experience.
Each package includes 2 engines, 2 starters, and 4 starter plugs—ready to support multi-launch classroom activities, science camps, or TARC-style competitions. Pair it with compatible Estes kits like the Alpha III or other 24 mm builds to give students a deeper look at mid-range engine dynamics without jumping up to D-class motors.
Whether you’re running a STEM enrichment program, a middle school rocketry unit, or an aerospace club, the C11-7 brings a safe and educational level of performance to your launch field. Backed by Estes’ decades of proven classroom reliability, this engine helps educators bring hands-on learning to life—one launch at a time.
ATTENTION: Estes Industries, 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 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.
