Baby Bertha™

(52 customer reviews)

Baby Bertha™

(52 customer reviews)

A miniature version of one of the most popular kits of all time, the Big Bertha. There’s nothing childlike about the Baby Bertha! It’s fun to build and decorate.


Availability: In stock

For This Rocket


What you need to launch

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The Baby Bertha is a half-sized version of one of Estes’ most popular rockets, the Big Bertha. The Baby Bertha stands just 13 inches making it an ideal Intermediate building experience. High performance and easy to build is this model rocket.

The Estes Baby Bertha requires assembly and can be built and finished in just an hour. You can paint it like the package or create your own Go Wild design! The kit features the distinctive looking laser cut wood fins, a blow molded nose cone and easy to apply self-stick decals. When powered with Estes standard model rocket engines, it can streak to 575 feet and is easily recovered with a colorful 12 inch parachute.

Complete your set of Berthas with the addition of this mini missile today!

WHAT YOU NEED TO BUILD: Scissors, pencil, ruler, fine sandpaper, carpenter’s glue, hobby knife, masking tape, white 1/32 inch pin stripe tape or white paint pen, primer (white), paint (black, 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).



Projected Max Altitude

575 ft. (175 m)

Recovery System

12 in. (30.5 cm) Parachute


12.8 in. (32.5 cm)


1.64 in. (42 mm)

Estimated Weight

1.9 oz. (53.9 g)

Estimated Assembly Time

1 Hour (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.

52 reviews for Baby Bertha™

  1. Rocket Guru

    The Estes Baby Bertha is perfect for up, or down scaling and I’m really into mods, never satisfied with stock motors. The stock Estes Baby Bertha is up powered, for 24mm BP E motors. Down scaling the Estes Baby Bertha I used a BT-20, a BNC-20 mod to a blunt nosecone, with 1/8inch thick balsa fins and downscaled to a Mini Baby Bertha, powered by the Estes Mini Engine series and featherweight tumble recovery, after 3 part break away attached to a common shock cord. I modeled it after the discontinued Estes Mini Bertha, as part of the ‘Mini Brutes’ series and it stands 6-1/16inches tall.

  2. Rocket Guru

    I’m also upscaling Estes Baby Bertha, to a Super Baby Bertha, powered by 29mm motors and it looks really impressive.

  3. Louis

    We painted it purple!

    My daughter and I built this one together. The kids seem to like the short and stout rockets quite a bit, and customizing the colour scheme.

    An easy build to do with a 4 year old.

  4. Bruce

    Great Starter Rocket!

    This is a love flying, great visibilty & chance of recovery rocket. The perfect rocket to use a first launch of the day.
    Seems to fly higher than the rated 275 feet when using the C6 -5 or 7 motor! Easy to build, fun to fly!

  5. Michael

    Great kit

    This rocket was fun to build. I had Big Bertha as well and Baby Bertha was just like it. Amazing.

  6. Joe

    An Amazing Rocket

    First and so far best rocket I have ever owned. It took only an hour thanks to the easy assembly. After the first launch proved it to be a great flier, I bought 5 more! I already lost 2 of them and they all did great. I’ve used C6-5s, B4-2s, and B6-4s. My only problem is that sometimes the parachute would not deploy even though the wadding was 8 sheets and all separate, not stuck together.

  7. Kruegon

    A Modern Gooney Bird

    This little short, fat rocket is so much fun. My family has 3 of them. I love the construction. The fat, short body with the large fins makes it easy to build. It’s a real first rocket for any beginner and a truly fun flier for even the experienced. The size and shape takes me back to the Estes Gooney Bird rockets. A bit of nostalgia for a modern rocket.

  8. Steve

    Perfect Wind Dummy

    I love this little thing! I overbuilt it to use it as a wind dummy…works great! A C6 motor sends it about 500′ which is a pretty good indicator where the wind will take the larger rockets. This is always my first launch of the day.

  9. Tom


    Flies great on every recommended engine. Very solid and durable. I think I’ll try a composite D engine in it next time!

  10. Ryan

    best flyer

    In my opinion the bertha rockets are the best. nice scale realistic flights. try this one. looks awesome and always get nice flights. not hard to build either

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