The Estes E12-8 is a 24 mm model rocket engine designed for lightweight, streamlined rockets that benefit from strong thrust and an extended coast period before recovery deployment. Its eight-second delay makes it well suited for compatible single-stage and upper-stage applications where longer coast times and precise ejection timing are desired.
Each package includes two E12-8 engines, two starters, and four starter plugs, providing the essential engine and ignition components needed for two launches with compatible model rocket equipment.
The E12-8 delivers a total impulse of 29.80 N-sec with a maximum thrust of 31.80 Newtons or 7.1 pounds. Its thrust duration is approximately 2.70 seconds, followed by an eight-second delay before ejection. The engine is rated for rockets with a maximum lift weight of 12.0 ounces or 340 grams.
Each engine measures approximately 3.8 inches or 9.7 centimeters long and has a 24 mm diameter. The engine weighs approximately 2.24 ounces or 63.5 grams and contains approximately 1.3 ounces or 36.9 grams of propellant.
The E12-8 is a practical choice for experienced rocketeers flying compatible models that can take advantage of its long delay and high-altitude potential. Its performance characteristics make it suitable for efficient rocket designs and selected multistage applications where extended coast time is appropriate. 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.
