Estes 1948 Big Bertha Rocket-Building Kit, Intermediate Flying-Rocket-Model Kit for Ages 10+

INTERMEDIATE MODEL-ROCKET-BUILDING KIT: The Big Bertha rocket-building kit offers kids ages 10+ and rocketeer enthusiasts an exciting hands-on STEM experience. It includes a durable body tube, a molded nose cone, laser-cut balsa fins, decals, and an 18-inch recovery parachute. It requires Estes rocket engines, Starters, Recovery Wadding, a launch pad system, and 4 high-quality 1.5-volt AA alkaline batteries for launch use (sold separately).

SOARS UP TO 500 FT.: Our 1948 Big Bertha rocket model blasts off with a powerful standard engine and has a slow, realistic liftoff. It soars with a projected altitude of up to 500 ft. (152 m) using a C6-5 Estes rocket engines (sold separately). This flying model rocket is compatible with B4-2, B4-4, B6-2, and B6-4 rocket engines.

READY TO ASSEMBLE: This intermediate model kit requires about 1 hour of assembly time, offering a rewarding build-and-launch project for young learners. Then pair it with an Estes Porta-Pad II Pad and Electron Beam Controller (sold separately) for liftoff.

SAFETY FIRST, FUN ALWAYS: Our rockets and rocket launch accessories are designed to be used with the NAR (National Association of Rocketry) model-rocket safety code. Always ensure you have an appropriate launch site, stand back at least 15 ft., insert the safety key, issue a countdown, and then you can let your rocket fly!

WE IGNITE IMAGINATIONS: Since 1958, Estes has created educational rocket kits and displays designed for an unforgettable aerospace experience. As a family-owned company, we have grown to offer exciting STEM products that engage aspiring rocketeers and the future minds of aerospace.

An Estes original

Laser cut balsa fins

Standard engine powered

Parachute recovery

Flies over 500'