B6-4 Model Rocket Engine FP

Estes B6-4 Engine Flight Pack (3) Rocket Engines Overview: Fuel your next launch with the Estes B6-4 Engine Flight Pack — designed for smooth, powerful, and reliable rocket flights every time! About the B6-4 Engine Flight Pack Power, Precision & Reliable Performance The Estes B6-4 Engine Flight Pack is the perfect choice for powering mid-sized model rockets with smooth, consistent launches. Featuring a total impulse of 5.00 N-sec, a 0.8-second thrust duration, and a 4-second delay, it delivers an ideal mix of power and control for rockets up to 4.0 oz. Each pack includes 3 engines, 4 starters, 4 plugs, and 12 sheets of recovery wadding — everything you need for multiple safe, reliable, and exciting flights. Features: Ideal for mid-sized model rockets up to 4.0 oz Provides 5.00 N-sec total impulse for balanced power 0.8-second thrust duration for smooth acceleration 4-second delay for stable, high-altitude performance Includes: (3) Engines (4) Starters (4) Starter Plugs (12) Sheets of Recovery Wadding