Take your mid-power rockets to new heights with the Estes F15-4 Model Rocket Engine 8-Pack! Designed for larger, heavier rockets that demand more thrust and longer burn times, the F15-4 is a powerful 29mm black powder motor that delivers consistent high-altitude flights.
With a 4-second delay, this motor is perfect for rockets needing additional coasting time before ejection. Each engine in this convenient 8-pack is built for performance, reliability, and excitement—whether you're launching single-stage rockets or clustering for multi-motor liftoffs.
Key Features:
Thrust: 25.26 Newtons peak
Total Impulse: 47.8 N-sec (Full F-class motor)
Burn Time: Approx. 3.45 seconds
Delay: 4 seconds
Diameter: 29mm
Length: 4.5 in
Recommended for heavier or draggy rockets
Whether you're flying a payload or just want that extra altitude, the Estes F15-4 gives you long-burning, high-thrust fun every time. Great for use in rockets like the Estes Majestic, Star Orbiter, and other mid-power kits.
Earn Reward Points: 69
Earn Discount: $2.07
