On Sunday, high-school seniors Sanzio Angeli, of Clover Hill High School, and Dylan Whitesel, of Midlothian High School succeeded in breaking the world's record by launching almost 4000 model rockets at one time. In the process, they collected $20,000 to support the Susan G. Komen Foundation.

For more information, and videos, please see Rocket4TheCure – New World’s Record As Teens Launch Almost 4000 Rockets at Once


Welcome to (formerly Essence's Model Rocket Reviews or EMRR). is the home of almost 5000 reviews of rocketry kits and products. Written by visitors to like you, the reviews cover everything from low-power model rocket kits to high-power rocket motors.

The site's Flight Log allows you to record and share your rockets and their flights.  The Builds feature helps you document your rocketry projects. 

At, you'll also find a large collection of rocketry resources such as a list of rocketry clubs, a calendar of rocketry events, and large libraries of OpenRocket design files and Rocksim design files. A number of rocketry tools and calculators are available to help you design, build, and fly your rockets.

As you explore, you'll also find a number of fun things such as a huge library of rocketry videos and a collection of photo albums. Community

Note: The web site is down right now as the software is being updated.

The Community adds a new layer of social interaction to Log in with your registered email address and password to join the Community.

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The forms at for entering and editing flights are much better than the ones here and they will continue to be enhanced as time goes by.

See: What is Community?


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Today's Featured Review

U.S. Rockets - Piston Stager (Kit)

Manufacturer:U.S. Rockets
Diameter:2.2500 inches
Length:74.0000 inches

Contributed by Bob Morstadt


USR Piston
Fig. 1 U. S. Rockets 2-Stage Piston Rocket

Brief: I was intrigued by the kit from U. S. Rockets called a Piston Stager for its looks, but when I realized it had a piston housed in the first stage to give an added boost to the 2nd stage, I became even more interested.

Construction: I made the following modifications to the original kit:

1) Transition section for the 2nd stage attaches by screws (and internal aircraft wood blocks) to the top of the first stage. (I can then inspect or repair the inner piston workings.)

2) Transition section was modified for electronic ignition. It appears that the user is left to his own devices on this matter. I used a 9-volt Nicad battery and a PerfectFlite microtimer. The 9v battery housing caused quite a bulge on the side as shown in Fig. 1.

3) I put vent holes in the outer piston tube, so that the air ahead of the piston diaphragm could vent out.

4) I painted the inside of the piston chamber and diaphragm with barbecue paint.

USR Piston
Fig. 2. Interchangeable engine mount for three 24 mm motors

The kit comes with a large variety of quality cardboard tubes and perhaps the kit could be renamed “tubes a-plenty”. The directions call out the parts by dimensions in the step-by-step instructions. So, I simply measured the parts as I went along. I used epoxy for attaching the fins and making fin fillets. The fins are good quality wood I sealed them with Min Max polycryllic, which takes about 4 or 5 steps of filling and sanding. A mylar chute is provided for the first stage. It is good quality for a lighter model and has the shroud lines already attached. I put it aside for another project and attached a larger chute. A wide streamer is provided for the second stage, which looks excellent. Engine mounts are provided for a wide variety of motors from a cluster of 3 D’s to an I-motor. I don’t think I would try an I-motor. I changed the mounts so they can be interchanged using screws as shown Fig. 2.

Fig. 3. Ace Fugue Shroud method for Transition Section

Fig. 4. Shroud ready to be formed by folding leafs down
Fig. 5 Transition section with electronic ignition for the second stage

I had trouble placing the 1.1” wood plate into the coupler in Step No. 4, so I ground the bevel with a dremel tool. The transition shroud uses an Ace Fugue Shroud method for producing the tapered transition section. I taped the pattern to the tube as shown in Fig. 3 and then cut the pattern with an Xacto knife. The first cut went well, but then the paper pattern became loose. In hindsight I think a better approach would be to put carbon paper underneath the pattern and trace the pattern onto the tube. For those familiar with this method it produces the angry alligator look shown in Fig. 4. As the build progressed I decided to put in an electronic ignition system in the transition section. This is modification is shown in Fig. 5. On one side I used a PerfectFlite microtimer 3. The hatch for this timer had only a small bulge. I also installed an on/off switch. The hatch for the 9-volt NiCad battery had a large bulge. I led the wires for the second stage through small square brass conduits. I placed the conduits on two of the four seams. These wires were then connected to the second stage Estes igniter by twisting.

Flight: I launched the Piston Stager with a G79-4 in the first stage and a D12-5 in the second stage. I saw the second stage coming down, but I was distracted by other club launches and so I lost the 2nd stage in the Utah sagebrush. From the ground it looks like the timer could have been adjusted to fire the second stage later, because the first stage was continuing to coast up quite a bit. Post-flight inspection indicates that the piston actually worked as designed. The piston was all the way forward in its chamber with a little bit of charring just before the vent holes and the D12 plastic igniter plug was at the bottom of the piston chamber tube. The long sliding piston tube was actually 2 tubes glued together with a coupler. Evidently, I didn't glue the coupler well enough, because the second half of the long piston tube was pulled away and like the second stage I don’t know where it went.

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David Richardson

AKA: DaveR

Location: Hernando, MS

Club Memberships: SAM# 0132

Favorite Rockets: Scalded Haint

Favorite Quote:

Fire is the leading cause of fire.

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ESTES #3003 ALIEN INVADER FLYING MODEL ROCKET, BUILT, uses 18mm enginejeffyjeep 0$39.95About 2 Days
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Too Rollin' (Red)Stoned

esl 148 003.jpg

Photo by Dick Stafford

Today's Featured Video

7 Foot Span R/C Rocket Glider- Boost

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50 Model Rocket Projects for the Evil Genius (Book)$30.00$16.9843.40%
Badger Air-Brush Company Minitaire Color Paint Set with Color Coat/Paint Retarder$271.40$157.7641.87%
J-B Weld Steel Reinforced Epoxy (10 oz.)$19.60$11.6040.82%
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SkyRocket HoverBlade$24.99$16.1135.53%
Estes Argent$69.99$45.4335.09%

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