Baby Bertha with Bag
001261 - Baby Bertha™-0
001261 - Baby Bertha™-2359
Baby Bertha Side View
001261 - Baby Bertha™-2360

Baby Bertha™

Sku: 001261

We are happy to present Estes Baby Bertha rocket - a half-sized version of the popular Big Bertha. Standing at just 13 inches, this intermediate model rocket is high-performing and easy to assemble in just an hour.

With the option to customize it with your own design or paint it like the package, this model rocket is a great way to let your creativity soar. The kit includes distinctive-looking laser-cut wood fins, a nose cone made using the blow molding process for durability, and self-stick decals that are easy to apply.

When powered with Estes standard model rocket engines, the Baby Bertha streaks up to 575 feet before safely landing with its colorful 12-inch parachute. Whether you're a seasoned model rocket enthusiast or a beginner looking for a fun new hobby, the Baby Bertha is for you.

Add this mini missile to your collection today and take your model rocket-building skills to new heights.

  • SKILL LEVEL: The Baby Bertha is an Intermediate level rocket which will help a budding rocketeer develop some basic model building and finishing skills.
  • RECOMMENDED ENGINES: A8-3, B4-4, B6-4, C6-5
  • PROJECTED ALTITUDE: 575 ft. (175 m) on a C6-5


The Baby Bertha rocket 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. This model rocket is both high-performance and easy to build.

Assemble and finish the Estes Baby Bertha within just an hour of building. You can paint it like the package or create your own Go Wild design! The kit features laser-cut wood fins, a blow-molded nose cone, and easy-to-apply self-stick decals.

When you power it with Estes standard model rocket engines, it streaks to 575 feet. It can be easily recovered due to its included colorful 12-inch parachute.

Complete your set of Berthas with the addition of the Estes Baby Bertha Rocket today!

What You Need to Fly

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 (sold separately)

Technical Specifications

  • Recommended Engines

A8-3, B4-4, B6-4, C6-5
  • Launch System

Porta-Pad II
  • Projected Max Altitude

575 ft. (175 m)
  • Recovery System

12 in. (30.5cm) Parachute
  • Length

12.8 in. (32.5 cm)
  • Diameter

1.64 in. (42 mm)
  • Weight

1.9 oz. (53.9 g)
  • Fin Material

Laser Cut Balsa Wood

Needed to Build (sold separately)

Scissors, pencil, ruler, fine sandpaper, carpenter's glue, hobby knife masking tape, white 1/32 inch pinstripe tape or white paint pen primer (white), paint (black, white) and clear coat (optional).
This product recommended for children ages 10+ with adult supervision for those under 12, and rocketeers of all ages.

Customer Reviews

Based on 3 reviews
Years ago I led a group build of these things

Years ago I led a group build of these things with the Boy Scouts. Thanks to the dead-simple design, some 50 Scouts each got an airworthy rocket after only an hour of work.
It flies well on all of the recommended motors (even the A8-3) and the wide tube just begs you to use even larger ones if you get bored of the 18mm motors and don’t mind taking the risk of losing it.
There’s plenty of room for experimentation too, so I’ve seen and built my fair share of “FrankenBerthas”.
Best kit Estes offers, and it’s not even close.

Rocket Guru
The Estes Baby Bertha is perfect for up, or down

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.

Rocket Guru
I'm also upscaling Estes Baby Bertha, to a Super Baby

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