Estes A3-4T Model Rocket Engine (4)

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The Estes A3-4T is a mini model rocket engine designed for small, lightweight rockets that require a short delay before ejection. With a 4-second delay, the A3-4T is ideal for comp act rockets that reach moderate altitudes and need reliable recovery system deployment. Total Impulse: 2.5 N-sec (Class A Engine) Thrust Duration: 0.5 seconds Delay Time: 4.0 seconds Maximum Lift Weight: Approximately 28 grams (1.0 oz) Optimal for: Small, lightweight mini rockets requiring a moderate coast before ejection Recovery Delay: Allows rocket to coast to near-peak altitude before deploying recovery system Each A3-4T engine pack includes: 4 A3-4T engines 5 igniters 5 igniter plugs Recovery wadding Recommended Use: For use in mini rockets designed for T-class (mini) engines. Ensure safe launch practices by following the NAR Safety Code and local regulations. Show more