C11-3 Standard Engines Educator Bulk Pack for Model Rockets (12) (EST1726)

The Estes C11-3 Engine Bulk Pack provides twelve 24 mm single-stage model rocket engines designed for rockets weighing up to 6.0 ounces or 170 grams. Their strong thrust and three-second delay make them well suited for compatible mid-size rockets that benefit from quick acceleration followed by a short coast period before recovery system deployment.

Each bulk pack includes twelve C11-3 engines, twenty starters, sixteen starter plugs, and one hundred forty-four squares of recovery wadding. The included supplies make the pack a convenient choice for repeated launches, club events, educational activities, and family flying sessions.

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 dependable lift 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 Engine Bulk Pack is a practical choice for hobbyists, clubs, families, and educational programs that need consistent performance across multiple launches. Always verify the rocket manufacturer's recommended engine configuration before use and store model rocket engines in a cool, dry location.

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.