Baby Bertha Model Rocket Kit

The Baby Bertha is a miniature version of one of the most popular kits of all time, the Big Bertha. The Baby Bertha soars to 575 feet. It has die cut balsa fins and can be launched on A, B and C Estes model rocket engines.

Estes Baby Bertha Model Rocket Kit Skill Level 1 #1261
 Estes Rockets # est1261
Retail $15.99  SAVE 21% !
Estes Rockets Item # est1261
Specifications :
  • Length: 12.75 in. (32.4 cm)
  • Diameter: 1.64 in. (41.7 mm)
  • Weight: 2.1 oz. (58.2 g)
  • Recovery: 12 in. (30 cm) Parachute
  • Fins: Die cut balsa fins
  • Maximum Altitude: 575 ft. (175 m)
  • Recommended Engines: A8-3, B4-4, B6-4, C6-5
  • Estes Product Number: 1261
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Spotlight Review

"Baby Bertha better than Big Bertha"
I built a Big Bertha many years ago, and recently discovered the Baby Bertha. When I opened the Baby Bertha kit I was a little let down. The balsa sheet looked like it was joined from two different pieces of balsa, half the sheet was a light color, the other half was darker, with a ridge in the middle. A little sanding took care of it just fine, and the fins appeared stronger at the joint. Also, I really prefer waterslide decals as opposed to peel and stick. In the end, it didn't matter much because I didn't use the decals anyhow. I do believe I like the Baby Bertha better than her big sister.

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  • Die cut balsa fins.
  • Assembled 12" parachute recovery with shock cord.
  • Natural color body tube allows you to create a custom paint scheme.
  • Molded, one-piece plastic nose cone.
  • Can be launched on A-class, B-class and C-class rocket engines.
  • Estes' full 1 year warranty.
  • Detailed illustrated assembly and launch instructions.


  • Length: 12.75 in. (32.4 cm)
  • Diameter: 1.64 in. (41.7 mm)
  • Weight: 2.1 oz. (58.2 g)
  • Recovery: 12 in. (30 cm) Parachute
  • Fins: Die cut balsa fins
  • Maximum Altitude: 575 ft. (175 m)
  • Recommended Engines: A8-3, B4-4, B6-4, C6-5
  • Estes Product Number: 1261


  • One model rocket kit
  • Decals
  • Detailed Instructions

Requirements & Suggestions

For How To Launch a Model Rocket

For How To Build a Model Rocket

  • Model Rocket Glue (TES3501) or Cement (HLC107)
  • Scissors
  • Pencil
  • Ruler
  • Sandpaper
  • How to Paint a Model Rocket
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"Fleet Favorite!"
rbeard2 (Dayton, OH)
I have built more of these than I can remember. It is a basic, old-school style, balsa 4FNC bird that retains some of the cooler traits of it's larger sister (The Big Bertha). The overlarge, swept fins, short stature and blunt nosecone combine to provide enough drag for slow, realistic looking take-offs that are easier to photograph. Altitudes approaching '1000 or higher are possible on C motors but the Baby Bertha flies just as well on Bs and As. One of my personal favorites, I currently have one built and one waiting to be built. Converts successfully to 24mm motors with a little extra nose weight.

"About Baby Bertha"
JEAdams (Reed City, MI)
This is a good kit to take your next step from E2X series of Estes Rockets. Provides all the principles of starting from parts to finished rocket in a kit. Will get you started to hone you skills on balsa, spiral paper body tubes and plastic nose cones. Making and mounting engine mounts, priming and finishing skills. The decal is now a self adhesive which I prefer water slide decals. Once the rocket is finished it fly's great with slow lift offs and gently recover on any size 18mm mother. So it's easy to launch from any size field they you may choose. And if something goes wrong during the process, parts are easy to obtain to correct the problem. Or if you decide to scrap it, or it lawn darts for some reason, you're not out much. This has maintained presence in my show collection as well as my flying collection for decades. It's always a crowd pleaser, especially when followed by the Big Bertha. Highly Recommend this kit for the young and those getting started out.

"There's Nothing 'Baby About This Rocket!"
As a teacher of Electronics and Aerospace Technologies at a Technology Center I am always looking for exciting ways to get my students involved in activities that will challenge them but, at the same time provide them with a rewarding sense of accomplishment, increased self esteem and most importantly an opportunity to have some fun while learning. The Estes Baby Bertha is one of the rockets I really like to use as an entry level kit within my curriculum (in fact I recently ordered 30 kits). It provides an esay build for the students, has awesome and reliable flight characteristics and make a great looking rocket a student can be proud of!! I highly recommend the Baby Bertha to anyone looking for an entry level rocket that certainly doesn't look like an entry level rocket and gives excellent performance at a reduced cost compared to the larger scale model. The materials of construction will allow for many flights and the straight forward assembly instructions make the Estes Baby Bertha a definate win,win! Clear Skies!


The Baby Bertha is a half sized version of one of Estes' most popular rockets, the Big Bertha. We took the great looks of the original design and shrunk it down to just under 13 inches (32 cm) making it an ideal Rocket Skill Level 1 building experience. The result of this engineering effort is a sky grabbing, high performance mini version of its bigger cousin, but in a smaller and easier to build model rocket.

The Estes Baby Bertha is a Skill Level 1 kit, which requires assembly and can be built and finished in just a few hours. You can paint this high flying rocket like the package or create your own Go Wild design! The kit features the distinctive looking laser cut balsa fins, a blow molded nose cone and easy to apply self-stick decals. When powered with standard C-class rocket engines, it can streak to over 575 feet (175 m) and is easily recovered with the aid of a colorful 12 inch (30 cm) preassembled [parachute. Complete your set of Bertha's with the addition of this mini missile today!

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