The Estes B6-6 is an 18 mm model rocket engine designed for compatible upper-stage applications and lightweight single-stage rockets. Its six-second delay allows an extended coast period before recovery system deployment, making it well suited for models that benefit from longer climb times and higher-altitude flight profiles.
Each package includes three B6-6 engines, four starters, and four starter plugs, providing the essential ignition components needed for multiple launches with compatible model rocket equipment.
The B6-6 delivers a total impulse of 5.00 N-sec with a maximum thrust of 12.10 Newtons or 2.7 pounds. Its thrust duration is approximately 0.80 seconds, followed by a six-second delay before ejection. The engine is rated for rockets with a maximum lift weight of 2.5 ounces or 71 grams.
Each engine measures approximately 2.8 inches or 7 centimeters long and has an 18 mm diameter. The engine weighs approximately 0.64 ounces or 18.1 grams and contains approximately 0.23 ounces or 6.5 grams of propellant.
The B6-6 is a practical choice for compatible multi-stage rockets and lightweight single-stage models that require a longer delay before recovery deployment. Its predictable performance makes it suitable for hobby launches, altitude-focused flights, club events, and staged rocketry projects. 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.
