Estes A3-4T Model Rocket Engine (4)

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 compact 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.