010019 Estes B4-4 Engines - 18mm Custom Rockets the Airborne Surveillance Missile made

the Airborne Surveillance Missile made its reintroduction after years gone by

Celebrate the Apollo era with the Estes Saturn V (1:200 scale) Ready to Fly Rocket

Estimated Assembly Time 1 Hour (painting and glue drying time not included)  Download Instructions

this miniature reincarnation of an Estes favorite offers an exciting introduction to the world of model rocketry

Consider using this for multiple rockets by not using or finishing the switch band

010019 Estes B4-4 Engines - 18mm Custom Rockets the Airborne Surveillance Missile made010019 Estes B4 4 Engines 18mm The Estes B4 4 is a reliable, single stage 18 mm engine designed for model rockets weighing under 3. 5 ounces. With a balanced 4 second delay, it's a perfect fit for smooth, stable flights and consistent recovery deployment. Each 3 pack includes three engines, four starters, and four starter plugseverything you need for several successful launches. Ideal for hobbyists and STEM projects alike, the B4 4 delivers steady