F15-8 Engines (29 mm)

Take your model rocketry to the next level with the Estes F15-8 engine—a powerful choice for single-stage rockets that need long-duration thrust and a delayed recovery system deployment. This engine is designed for impressive altitude and high-performance launches, making it a favorite among seasoned rocketeers and hobbyists pushing the limits of what their rockets can do.

With its extended 3.45-second thrust duration and robust 29 mm diameter casing, the F15-8 is ideal for rockets that need a sustained boost phase. The 8-second delay gives your rocket time to coast and stabilize after burnout, ensuring smoother deployments and potentially higher peak altitudes. It’s particularly well-suited for heavier or drag-intensive models that require a longer burn and post-thrust coasting phase before recovery activation.

Made with high-quality composite propellant, the F15-8 delivers 49.61 N-sec of total impulse and a peak thrust of 25.26 Newtons, providing an exciting and visually dramatic liftoff experience. Its versatility and performance make it a go-to option for rocketeers building mid-power designs that aren’t quite ready for E-engine limitations but aren’t stepping up to G-class power yet.

Whether you're refining a custom build or launching a trusted favorite, the Estes F15-8 engine gives you the duration, strength, and delay timing to fine-tune your mission and push for higher, more precise flights. It's everything you'd expect from Estes—quality, reliability, and performance that stands up to every launch.

ATTENTION: Estes Industries, LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.