001946 – Boosted Bertha™

(2 customer reviews)


Advanced Skill

Estes is proud to welcome the newest member of the Bertha rocket family. A sport rocket at its core, this multistage flying model rocket can reach altitudes of 1000 feet! A colorful 18 inch parachute provides a soft landing, so the Boosted Bertha can be quickly prepared for another launch.

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Advanced Skill

Estes is proud to welcome the newest member of the Bertha family, the Boosted Bertha. This beaut rounds out the collection by being the first in the series to feature a two-stage rocket booster.

A sport rocket at its core, the second booster of this multistage flying model rocket will push this Bertha skyward, reaching twice the height of Big Bertha. The Boosted Bertha will reach altitudes of 1000 feet when powered with an Estes C6-0 engine in the booster stage and an Estes C6-5 engine in the main rocket. After the first stage ignites, the booster jettisons and gently tumbles back to earth. Once the rocket reaches apogee, the rocket will deploy the recovery system—a colorful 18 inch parachute. This provides the Boosted Bertha a light landing so that it can be quickly prepared for another launch.

Quality Estes body tubes, laser cut wood fins, a molded plastic nose cone, and easy-to-apply waterslide decals make for a full day of building enjoyment. Once painted to perfection, this Bertha is a must-have for any rocket collector!

WHAT YOU NEED TO BUILD: Scissors, pencil, ruler, fine sandpaper, carpenter’s glue, plastic cement, hobby knife, masking tape, clear tape, primer (white), paint (orange, white), and clear Coat (optional). 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).


Additional information

Projected Max Altitude

1000 ft. (305 m)

Recovery System

18 in. (45.7 cm) Parachute; Tumble


28.2 in. (71.6 cm)


1.64 in. (42 mm)

Estimated Weight

4 oz. (113.4 g)

Estimated Assembly Time

4 Hours (painting and glue drying time not included)

Fin Materials

Laser cut wood

Decal Type


Launch System

Porta Pad II and Electron Beam Launch Controller

Launch Rod Size


Age Recommendation

Estes model rocketry is recommended for boys and girls ages 10+ with adult supervision for those under 12, and rocketeers of all ages.

2 reviews for 001946 – Boosted Bertha™

  1. Rocket Drew (verified owner)

    Its a fun build, but not a great flyer. This rocket is right at the edge of the C6-0 max lift off weight. This means if you add anything to the kit or get heavy with glue and paint it might make for some unstable low speeds off the rod. There’s also alot of fin area that can lead some odd flights even with low winds. Also keep in mind prepping 8 balsa fins can get a bit repetitive.

  2. Rocket Guru

    Thank you Estes, for this next addition, by the looks of Boosted Bertha and my past flights with the Bertha family, Mini to Super. Once purchased, I will be modifying mine, starting with the trailing edge of the 2nd stage fins, to match the leading edge, of the 1st stage booster fins, then staggering the fins will not be necessary, as shown, improving the aerodynamics and altitude. It should also be a great up powered rocket to 24mm, but only C11-0, or D12-0 motors, for the 18mm and some 24mm motors are the same length, on the 1st stage and D, or E motors in the 2nd stage. Just swap out the motor mounts, use epoxy, cut through the tubes fin slots, redraw the fins with extensions, use 3/16inch launch lugs and add nose weight for a stable C/G. At around 2,000feet you might use a GPS tracker, to retrieve Bertha, if boosted… hint, hint bright flashy colors.

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