The Big Bertha gives you a slow, realistic liftoff. What a thrill it is to watch! Propelled by powerful Estes standard model rocket engines, this beauty travels to 500 feet. In one afternoon your Bertha is ready for an exciting time at the launch field!
Big Bertha is an Estes original! She’s an all-around Estes favorite that has truly withstood the test of time. Over the decades, Big Bertha has been most modelers’ first big build. If you’ve never flown a Bertha, get one and launch it. Once you’ve flown it, you’ll take it to every launch!
The Big Bertha gives you a slow, realistic liftoff. What a thrill it is to watch! Propelled by powerful standard Estes engines, this beauty travels to 500 feet and comes back to Earth with an 18 inch parachute. Quality Estes body tubes, laser cut wood fins, molded plastic nose cone and easy to apply waterslide decals makes this rocket kit a perfect companion for an afternoon of building enjoyment.
WHAT YOU NEED TO BUILD: Scissors, pencil, ruler, fine sandpaper, carpenter’s glue, hobby knife, masking tape, primer (white) and paint (black, yellow). (Tools, construction and finishing supplies not included.)
WHAT YOU NEED TO LAUNCH (sold separately): Estes Porta-Pad II Launch Pad and Electron Beam Launch Controller, Estes model rocket engines, starters and recovery wadding. Four 1.5V high quality AA alkaline batteries are also required for launch controller (not included).
B4-2, B4-4, B6-2, B6-4, C6-5
Projected Max Altitude
500 ft. (152 m)
18 in. (45.7 cm) Parachute
24 in. (61 cm)
1.64 in. (42 mm)
2.5 oz. (70.9 g)
Estimated Assembly Time
1 Hour (painting and glue drying time not included)
Laser cut wood
Porta-Pad II and Electron Beam Launch Controller
Launch Rod Size
Estes model rocketry is recommended for boys and girls ages 10+ with adult supervision for those under 12, and rocketeers of all ages.