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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

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Welcome to RocketReviews.com (formerly Essence's Model Rocket Reviews or EMRR). 

RocketReviews.com is the home of almost 5000 reviews of rocketry kits and products. Written by visitors to RocketReviews.com 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. 

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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
Style:Mult-Stage

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.

USR
Fig. 3. Ace Fugue Shroud method for Transition Section

Fig. 4. Shroud ready to be formed by folding leafs down
USR
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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Today's Featured Flyer

David Richardson

AKA: DaveR

Location: Hernando, MS

Club Memberships: SAM# 0132

Favorite Rockets: Scalded Haint

Favorite Quote:

Fire is the leading cause of fire.

Visit David Richardson's

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ESTES #3003 ALIEN INVADER FLYING MODEL ROCKET, BUILT, uses 18mm enginejeffyjeep 0$39.95About 2 Days
Wounded Warrior Project
10%
ESTES #1250 INTERCEPTOR FLYING MODEL ROCKET, BUILT, OOP, uses 18mm enginejeffyjeep 0$69.95About 2 Days
Wounded Warrior Project
10%
 New Estes Flying Model Rocket Starter Setclickgoodwill ---Goodwill Industries of Central Indiana100%

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Today's Featured Photo

Too Rollin' (Red)Stoned


esl 148 003.jpg

Photo by Dick Stafford

Today's Featured Video

7 Foot Span R/C Rocket Glider- Boost

View our collection of about 5,800 rocketry videos.

Featured Rocketry Blog Posts

Odd'l Rockets: SPUDNIK Flight Testing
I launched the SPUDNIK twice yesterday morning, both times with a A10-3t engine. Both flights were stable to about 100 feet but there was corkscrewing. The Odd'l Rockets Sputnik (with the 3" foam ball) flys vertical without any "coning" or corkscrewing. The problem is trying to drill out a straight 1/2" hole for the engine mount tube. If the line of thrust is off by a degree or two the rocket won't fly perfectly vertical. Add the uneven surfaces along the top and it probably won't fly without some spiraling. Drag and weight are other considerations. On both flights the model was nose down ...
[Read More in This Series]

Model Rocket Building: Estes Patriot Build #2056, Part 1, Parts
Everybody has built one of these, except me! This build will be a little different. At the bottom of each post I'll be keeping track of how long I take on each step. These are my personal build times, I tend to take longer on rocket building than most people. I don't keep track like this very often, it's a bigger effort to keep recorded build times. There will be upgrades. A BT-60 model at over 21" tall should probably be D engine capable. You can always drop in a 18mm adapter for smaller fields. A payload section will be made using the upper yellow tube section. All the parts: ...
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Orlando Rocketry: Video of NEFAR's October, 2014, Launch
I’ve uploaded a video of NEFAR’s October launch to YouTube. I flew a DJI PLantom 2 Vision quadcopter to capture the event from an aerial perspective. The video below shows low- and high-power rocket launches as seen from above as ...
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Model Rocket Building: Art Applewhite MMX Bic Pen Rocket Build, Part 1, Parts
This will be a quick freebie. This is a high performance, MicroMaxx rocket made from a Bic pen. Art Applewhite has designed some great saucers, spools and monocopters First stop by: http://www.artapplewhite.com/ Check out all the spools, saucers and monocopters Look to the upper left, click on "Free Stuff" Read the Limitation of Liability, Click on "I Agree" Go to the Free Stuff page - Click on "MicroMaxx Rockets" Click on the "Bic StiC" Print out the instructions (with fin can) on 110 lb. card stock. You'll need a Bic StiC pen and hobby tools. Add a 1/4" dowel if you want make ...
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Greg Smith's Blog: Der Red Mix mark II Skidfest at ROCTober 2014
After talking it up for over a year I finally flew my scratch-built Der Red Mix mark II on a full complement of seven burly Skidmark motors (as always switching to 720p in full-screen mode is the shit): A formidable liftoff featuring loud, flaming titanium granules: And notably angled ascent: I arrived at the lake bed later than I'd have preferred but the conditions were perfect all day with light, intermittent wind and perfectly clear skies. I had prepped all the electronics two months ago so I only needed to load up the seven Skidmark motors, set up the CD3 ejection system, mount the Flip ...
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Rocketry Deals

Product NameList PriceSale PriceDiscountStore
Estes Nike Smoke$79.99$39.4950.63%
Estes Partizon$69.99$35.4949.29%
Estes Recovery Wadding$7.99$4.4444.43%
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%
Estes Taser Launch Set$29.72$18.6237.35%
Estes Eliminator Model Rocket Kit$29.99$19.0236.58%
Estes Reflector Flying Model Rocket Kit$23.99$15.4135.76%
SkyRocket HoverBlade$24.99$16.1135.53%
Estes Argent$69.99$45.4335.09%

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