> Model Rockets > Rocket Kits > Level 1 Beta : Estes Big Bertha Model Rocket Kit est1948

Big Bertha Model Rocket Kit

Over the decades this is the first big rocket for many modelers! Slow, realistic lift-offs from this true classic!

Big Bertha is an Estes original! Big, burly, black and beautiful perfectly describes this classic. 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. While standing on its massive fins, this big black rocket checks in at an impressive 2 feet tall. 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 a decorated 18 inch parachute. Quality Estes body tubes, laser cut wood fins, molded plastic nose cone and easy to apply self-stick decals make for an afternoon of building enjoyment. In one afternoon your Bertha is ready for an exciting time at the launch field!

Estes Big Bertha Model Rocket Kit Skill Level 1 #1948
 Estes Rockets # est1948
$20.79 on sale $19.39
Retail $26.99  SAVE 28% !
Estes Rockets Item # est1948
Specifications :
  • Length: 24" (61 cm)
  • Diameter: 1.64" (41.7 mm)
  • Weight: 2.2 oz (62 g)
  • Recovery: 18" (46 cm) parachute
  • Fins: Die cut balsa
  • Maximum Altitude: 500 ft (152 m)
  • Estes Product Number: 1948
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Spotlight Review

"Estes Big Bertha Great Sport Model, for Up Powering"
The Estes Big Bertha is a must have model rocket for all beginner model rocketeers and can be modified for up powering. Either to a single 24mm motor, using an Estes 3159 D&E mount kit, for BT-60 and an Estes 9751 Pro Series Motor Retainer, with 2 engine blocks, because an E motor will bend and push the engine clip. Or, 3x18mm motors using the Estes 3158, that has 3x18mm motor mounts. They will all friction fit into the BT-60. Fill in between the 3 BT-20's and BT-60 with tissue and epoxy, just keep the engine clips equally spaced and facing outward. Use epoxy when constructing and install an ejection baffle. I would also slot the BT-60, for through tube wall fins, redrawing the fins, with through tube wall extensions. Upgrade to a nylon parachute, for the upgrade and install nose weight to balance for a stable C/G. Should see more altitude than the Super Big Bertha, on BP E 24mm motor power, at around 2,000 feet and a GPS tracker is optional.

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  • Self-adhesive black and white decals.
  • Die-cut card fins.
  • Plain brown cardboard body tube.
  • One-piece white plastic nose cone.
  • Parachute recovery with shroud lines and shock cord.
  • Centering rings, engine hook and engine mount tube.
  • Skill level 1: quick and easy-to-build.
  • Estes' full 1 year warranty.
  • Detailed illustrated assembly and launch instructions.


  • Length: 24" (61 cm)
  • Diameter: 1.64" (41.7 mm)
  • Weight: 2.2 oz (62 g)
  • Recovery: 18" (46 cm) parachute
  • Fins: Die cut balsa
  • Maximum Altitude: 500 ft (152 m)
  • Estes Product Number: 1948


  • One model rocket kit
  • Decals
  • Detailed Instructions

Requirements & Suggestions

For How To Launch a Model Rocket

For How To Build a Model Rocket

  • How To Build a Model Rocket
  • Sandpaper (tes8802)
  • Model Rocket Glue (tes3501) or Cement (hlc107)
  • Hobby Knife (tes50627c)
  • Masking Tape (pacmt104)
  • Sanding Sealer for fins
  • How to Paint a Model Rocket
  • Ruler
  • Scissors
  • Pencil
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Write a Review  View All Reviews
"Big Bertha is a Big Hit!"
steve s (chula vista, ca)
This is a great rocket kit for the novice or experienced rocket builder. It's a very easy build that took about 45-60 mins. to build(not including paint and decals). It flies great and it's size is really impressive on the launch pad. I've launched Big Bertha at least 10 times without any malfunctions. The C size engines are powerful enough that I've been able to attach a key ring video camera and get spectacular videos and pictures. Nothing is as satisfying as watching video from a successful launch and recovery taken from the rockets perspective! Bottom line, this is one of my favorite rockets to fly, always trouble free and beautiful to watch! I would recommend this Rocket Kit to anybody who wants a big rocket experience without a big price.

"The Bigger The Bertha, The Better!"
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 Big Bertha is one of the rockets I really like to use as an entry level kit within my curriculum. 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 Big Bertha to anyone looking for an entry level rocket that certainly doesn't look like an entry level rocket and gives excellent performance. The materials of construction will allow for many flights and the straight forward assembly instructions make the Estes Big Bertha a definate win,win! Clear Skies!

"great build"
As a long-time rocketeer, I decided to surprise my girlfriend (pretty new to rocketry) with a Big Bertha. She had already built a Baby Bertha and wanted to go bigger. She sat down and within an hour the rocket was ready to paint. Easy construction and the instructions were easy to follow. I'm going to be buying one for myself soon. I suggest using small paracord for the shock cord (at least two to three times the length of the rocket), not the rubber band provided with the kit. To get even more altitude, she airfoiled the fins; rounded leading edges and tapered trailing edges, about 3/16 to 1/4 from the rear. We have yet to fly it but the instructions help with aligning the fins nicely. Already looking forward to my own build!

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