Estes Model Rocket Engine B6-4 Standard Engine (3)

The Estes B6-4 is a reliable and versatile single-stage model rocket engine designed for launching medium-sized rockets. Ideal for both beginner and intermediate rocketeers, this engine delivers consistent thrust with a delayed ejection charge, making it suitable for a wide range of flight profiles.

• Total Impulse: 5.00 N-sec (Class B Engine)

• Thrust Duration: 0.70 seconds

• Delay Time: 4.0 seconds

• Maximum Lift Weight: Approximately 113 grams (4.0 oz)

• Recovery Delay: Allows rockets to reach peak altitude before deploying recovery system

• Recommended for: Rockets weighing 2–4 ounces (including engine)

Each B6-4 engine pack  includes:

• 3 rocket engines

• 4 igniters

• 4 igniter plugs

• Recovery wadding

Use only with Estes model rockets or similar lightweight model rockets designed for B-class engines. Always follow NAR safety code and local laws when launching.