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Big Bertha Rocket Kit | 
 enlarge | Brand: Estes
Category: Toy
Buy New: $13.79
New (6) from $13.79
Rating:  4 reviews
Sales Rank: 12306
Autographed: No
Memorabilia: No
Shipping Weight (lbs): 0.9
Dimensions (in): 20 x 6 x 3
MPN: 1948
UPC: 047776019485
EAN: 0047776019485
ASIN: B0006NAMUO
Availability: Usually ships in 1-2 business days
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| Features:
| • | Estes Big Bertha Rocket Kit - 1948 | | • | EST |
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| Editorial Reviews:
Product Description
Big Bertha is a Flying Model Rocket from Estes' Beta Series. Assembly Kit Suitable for Ages 10 and Older. Adult Supervision for Those Under 12. FEATURES: Flies up to 550 feet (169m) depending on chosen engine. Estes' largest beginner level rocket. Slow, realistic take-offs. 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. INCLUDES: One Big Bertha Model Rocket REQUIRES: Assembly Recommended Engines: B4-2, B4-4, B6-2 (First Flight); B6-4, C6-5. Igniters Wadding Wood Glue (White or Yellow) Hobby Knife Scissors Masking Tape Pencil Sandpaper Sanding Sealer Spray Enamel Paint (Black) Launch System SPECS: Length: 24"" (61cm) Diameter: 1.637"" (41.6mm) Weight: 3oz (95g)
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| Customer Reviews:
 Big Bertha has come a long way May 11, 2008
L. M. Fuke (Silicon Valley, CA)
3 out of 3 found this review helpful
Estes Big Bertha traces its lineage to 1963, and it has evolved over the years to a non-frustrating afternoon fun in rocketry. It wasn't always that way.
First off, Estes has re-designed propulsion to single engine simplicity.
For many years, Big Bertha was cluster-powered; it sported three-engine
power. It required a "whip", a network of multiple engine clips for ignition - when things went right.
Cluster power offered a huge advantage; three C.8 engines legitimately yielded more than 20 nt-sec of impulse. Even the D-series, when it was introduced, was rated at 13.5 nt-sec. A cluster of three C.8's cost less than a dollar. Those were the good old days.
If you were a power-freak, clustered C.8's were the only way to go. Big Bertha however, almost never co-operated. First, there is the inherent 15% variation from engine to engine, which affected thrust, duration, and delay train. Then, that whip colluded to stimy simultaneous engine ignition. Even the ignitors were different back then, plain nichrome and not the squib.
Lift-off frequently involved only a single or if you were lucky, twin-engine power. Big Bertha would veer wildly off the pad. The older version of BB freqently had a payload compartment. Heaven help you if there were live animals on board. Big Bertha also exhibited another advantage - it could bounce back from prangs with minimal damage.
However, there were rare occasions when everything went right, and BB was a thing of beauty. It was worth the trouble.
I appreciate this opportunity to walk down memory lane. Big Bertha is still simple to build, and is readily customizable at small additional expense, to two-stage configuration, payload compartments, even single-engine D or E power, whatever. Maintain the fin size as specified, though. It is primed for terrific fun and the basis of new memories, but new rocketeers have no idea what they've missed.
 VERY BIG, VERY Fun March 5, 2008
T. Frisble (Mississippi)
This rocket is a classic and flies very well. I also like the size of this rocket. Unfortunatley, I lost this one upon my first launch to a tree. I do plan to get another one, so that should say something. The only negative I would say it that is the rocket did not launch "slow" like a real rocket. It launch just as any otehrrocket does, but its still fun.
Big Bertha Equals Big Fun March 18, 2007
James Koenig (Minnesota)
15 out of 15 found this review helpful
The Estes Big Bertha rocket is one of the most simple, yet satisfying rockets to build and fly.
First, the design is simple - easy to construct, even for the beginner.
Second, the rocket is impressively big. Kids like to launch big rockets, and the Big Bertha fills the bill. Because of its large size, the Big Bertha has a slower take-off, one you can actually see, instead of the "zip and gone" take-offs of the smaller rockets. Also, because of its size, this is a rocket you will not likely lose. It won't go so high, even with a C6-5 engine, that you will lose sight of it. I have flown some rockets that went so high I lost sight of them and lost them to the wind drift. This will not happen with the Big Bertha. It is a great rocket to launch in a somewhat confined lauch field, as it will not drift that far downfield.
Third, this is a simple rocket to operate, and it is durable and dependable. You can launch it over and over with consistent performance.
Finally, it has a large parachute which is easy to spot in the sky and floats the rocket to earth safely.
I highly recommened the Big Bertha rocket to all beginner rocketeers. It will provide hours of fun and it a great way to learn the basics about model rocketry.
Jim Konedog Koenig
Everyones favorite large lass January 18, 2006
William J. Eichelberger (Ft. Thomas, KY)
12 out of 12 found this review helpful
The Big Bertha is likely to be the first "Big" rocket that most people own as kids, and with good reason. The classic design is easy to build and fly, and large enough to make a great small field bird. As with all Estes models, the internals could stand some upgrading, but the Bertha overcomes Estes resistance to 21st century rocketry and belongs in your fleet.
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