1/4A3-3T Engine Bulk Pack

The Estes 1/4A3-3T Engine Bulk Pack gives you the freedom to fly more often with one of the most consistent mini engines in model rocketry. Designed specifically for lightweight rockets, this compact engine delivers a gentle but reliable boost that keeps flights controlled, recoveries easy, and your rockets ready to fly again and again. What makes the 1/4A3-3T stand out is its consistency. Each engine is engineered to produce steady thrust, helping rockets lift cleanly off the pad and follow a predictable flight path. That kind of reliability is perfect for refining builds, testing performance changes, or simply enjoying flights that behave exactly how you expect. With a total impulse of 0.625 N sec and a 3 second delay, this engine is tuned for small scale flights where precision matters. The short thrust duration and lightweight design make it ideal for delicate airframes, including balsa and foam rockets, where a softer boost reduces stress and helps extend the life of your models. This bulk pack is made for rocketeers who want to keep flying without interruption. Whether you are squeezing in flights after work or spending the day at the field, having a reliable stash of 1/4A3-3T engines means more launches, more testing, and more time doing what you enjoy. Always follow Estes safety guidelines and local launch regulations for the best experience. 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.