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.


The mobile site makes it easy to add flights to your Flight log using a smart phone or tablet. Visit:

The mobile site allows you to view and enter flights in your Flight Log and to view and add rockets to your Rocket Gallery using simple controls designed for smartphones and tablets. You must have an existing account which the mobile site will ask you to log into.

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Today's Featured Review

Madcow Rocketry - Bat Ray {Kit} (K-118)

Manufacturer:Madcow Rocketry
Diameter:2.2000 inches
Length:26.0000 inches

Construction Rating:
Flight Rating:
Overall Rating:

Contributed by Donald Besaw Jr

Madcow Rocketry Batray

The Madcow Rocketry Batray is a new 2.2 inch diameter MPR kit with bat wing shaped fins. It can be flown on a wide variety of motors, both BP and AP (composite) 24mm and 29mm. It will fly on anything from an Estes D12 up through SU and RMS F class motors. Each flight returns safely with an 18 inch nylon chute.

Read the rest of the review ...

Today's Featured Flyer

Mark Kulka

AKA: Mark II, the Rustic Rocketeer

Location: Tupper Lake, NY

Certification Level: L1 NAR

Club Memberships: NAR, ASTRE #471

Favorite Rockets: Estes Astron Sprite, Semroc SLS and Deci-Scale series, FSI Nova and others, Art Applewhite Cinco,


I avidly pursued the hobby as a kid in the 1960s, but hung up my microclips "temporarily" when I went off to college. I always planned to resume it again when time and circumstances permitted. Finally did so, 33 years later. Wow, had things changed. Very fervid backwoods BAR since 2004; NAR member since 2006. Level 1 cert. in 2011. I particularly enjoy building clones and reproduction kits of classic model rockets that I had longed for back in the 1960s, as well as those that subsequently came and went during my long hiatus. Those old designs are new to me! I missed a lot of great stuff and I am happily working to catch up. I enjoy and pursue the entire range of modern hobby rocketry, from micros to high power. If it's powered by a reaction motor, it's good. One of my ongoing projects is to build clones of every model rocket design that Flight Systems, Inc. produced during its 27 year history. I have also been building reproductions of many of the Estes "Mini Brutes" from the 1970s and 80s. My focus isn't all on the hobby's storied past, though; I am keenly interested in current and new designs, products and developments in the hobby in the present day. I greatly enjoy talking about all aspects of the hobby with fellow enthusiasts on rocket web forums and online social network sites. I am constantly getting blown away by the skills and creativity of fellow rocket people today, both the young and the "mature." I am particularly impressed by the level of sophistication and depth of knowledge of many of the young members of the hobby today, and the willingness to "pay forward" (along with the wit and humor!) that is demonstrated by the the older members.

Favorite Quote:

Rocketry Without Pity.

In the forest, no one can hear you order a grande caffè misto.

No one is ever "Mayor" of the wild places.

Club Home Page:

Visit Mark Kulka's

Visit the Who's Who directory.

Today's Featured Photo

NEFAR Launches

July 2013 Launch

Steve's Big Red on an I175

Photo by Roger Smith

Rocketry Deals

Product NameList PriceSale PriceDiscountStore
Scientific Explorer's Meteor Rocket Science Kit$23.99$12.9945.85%
Estes 2274 Recovery Wadding$7.99$4.4943.80%
50 Model Rocket Projects for the Evil Genius (Book)$32.00$18.5442.06%
Badger Air-Brush Company Minitaire Color Paint Set with Color Coat/Paint Retarder$271.40$166.0738.81%
D L C Enterprises Full Circle$19.95$12.2538.60%

Click a column header (Product Name ...) to sort the table by the selected column. Click the column header again to sort in the other direction.

Visit the Rocketry Deals Finder to discover more specials.

Other Interesting eBay Items

New Estes Interceptor EST 1250 Model Rocket Kit 2007 Re-issue Skill Level 2
New, Big Estes Interceptor 'E' Model Rocket Kit EST 1350 Skill Level 3
New, Estes Challenge Series Phoenix Model Rocket Kit EST 1380 Skill Level 3
Sealed Estes Semi Scale Titan II Model Rocket Kit EST 1918 Skill Level 2
Estes APV condor model rocket kit
LOT of 8+ Vintage ESTES MODEL ROCKETS, ENGINES, and accessories/parts/pieces
LOT of 14 Estes Flying Model Rockets & 3 Wooden Flying Kits – NEW IN BOX
ESTES mini BRUTES vintage model rocket kit TK-123 Mosquito Screamer Mini Bertha
Vintage Mosquito and Mark II Model Package Cards Lot Estes - NO Rockets

Featured Rocketry Blog Posts

Model Rocket Building: Estes Apollo Little Joe II, Background
Here's the Little Joe I remembered wanting. The BIG 1/45 Scale Little Joe II from the 1969 Centuri catalog. To see the catalog, CLICK HERE But $12.95? All I could afford was the smaller 1/100th scale Little Joe II. The fin fairings and some trim was vacuum formed. They were lightweight but fragile, much like the Centuri Saturn V fins and fairings incorporated into the Estes re-issue Saturn V kits. The "metalized" wrap was pre-installed at the factory. To see the original Centuri instructions: CLICK HERE The body and capsule came down separately on two 24" parachutes. A three engine cluster. ...
[Read More in This Series]

Model Rocket Building: Estes STM-012 Kitbash to the B32-M Spike, Background
Well, I thought it might work! I bought two Estes STM-012 kits on Ebay with the hopes of kit-bashing one of them into an AMRAAM. It never even occurred to me that the STM-012 model would have three through-the-wall fins. The AMRAAM has two sets of four fins. I would have to buy a couple new lengths of BT-60 to do the conversion. That, and the STM-012 nose cone was long! So the kits sat for a few months with me wondering what to do with them. Then I remembered this design from Madcow: The AGM-33 Pike . I've always like the looks of this one, I did the instructions for their 1.6" diameter kit. ...
[Read More in This Series]

Rocket Dungeon: Mini Higgs build, part 1
I dug into the build at the very best place to start - at the very beginning, which in this case is the motor mount. This is not so different than any other LPR mount. It includes rings (squares in this case), a motor clip, motor block, etc. The mount also has two normal round rings to hold the clip securely in place. The Kevlar leader is attached behind the forward square centering ring. Unlike any kit I've had, it also includes a section of shrink tube to protect the lower several inches of the Kevlar. I pretty much built this stock. If I want to put a bigger motor in one, I will have to ...
[Read More in This Series]

Model Rocket Building: Carded Red Max Build, Part 1, Parts
I've seen a few pictures of "Rocket Families" on the forums. The Red Max is a favorite with the Estes Mini Max (BT-50 based), standard Red Max (BT-60 based) and Mega Red Max. Well, how about a smaller BT-5 version for 13mm engines? This one is tiny at just 5 1/4" tall! It performs like a BT-5 Mosquito. At one time I had a little carded Red Max model. It was a BT-5 diameter with a Micro Max engine mount. I lost it somewhere along the way and wanted to make another one. After a few searches I couldn't find it. I thought it might be at Wayne Hill's Rocketry Blog - CLICK HERE There are many ...
[Read More in This Series]

Model Rocket Building: Goony X-15, Part 1, Parts
In the past I bought a few of the Quest X-15 Parts packs. In the pack you get everything except the engine mount, main body tube and parachute. I figured with some BT-60 based parts I could make a good goony version. I raided the spare parts drawers. I found an Alpha style nose cone and a length of BT-60. I think the main reason people buy the X-15 parts pack is for the decal sheet. It is a water slide sheet with lots of white decals on it.
[Read More in This Series]

[View All Featured Posts]

Today's Featured Video

Aero-TV: AIA's Audrey Koehler - Launching Our Next Generation Pt. 1

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