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.

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Today's Featured Review

K&S Rockets - Heavy Hitter 4 {Kit} [2008-?]

Manufacturer:K&S Rockets

Construction Rating:
Flight Rating:
Overall Rating:

Contributed by John Lee

K&S Heavy Hitter

I was snooping around the K&S site and had resolved to place an order and try them out. As I was doing so, I noticed a link for "Special Orders" and had to check it out. The link took me to the Heavy Hitter 4. I knew that this was one I had to try.

The Heavy Hitter 4 is an interesting rocket in several respects that particularly appeal to me. First off, it is a two stager. I like that. The complexity level goes up again because the booster stage is a cluster composed of 2 18mm "strap ons" and a central 24mm core. The sustainer recovers by streamer but so does the booster. Instead of tumbling, each of the strap-ons ejects a streamer as well.

Read the rest of the review ...

Today's Featured Flyer

David Hunt

Location: Johnson City, TN

Certification Level: L2 TRA

Club Memberships: Tripoli, no club but fly with New River Rocketry, VA and ICBM, SC

Favorite Rockets: Minie Magg


A BAR that flew at NARAM 12.  Re-entered hobby to fly HPR

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Today's Featured Photo

NEFAR Launches

January 2011 Launch

Roger's YouBee

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$18.5242.13%
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$12.2638.55%

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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/Sealed Dragon 1/35 Scale Plastic Model German A-4 Missle (aka V-2 Missle)
Sealed Estes Semi-Scale Sandhawk Model Rocket Kit K-51/EST 1251 Skill Level 2
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
Huge LOT of Model Rocket Parts, Tubes, Nose Cones, Parachutes, Fin Stock, MORE!
Heavy Duty Mid-Power Model Rocket Launch Pad, Fade To Black Brand, Tubular Steel
Huge LOT: 38 Estes / Quest / Apogee Model Rocket Parachutes 12" to 32" new/used
LOT of 5 Vintage OOP Estes, Semroc, QCR Model Rocket Parachutes
Model Rocket Design and Consruction - Tim Van Milligan - 3rd Ed, 328 pages, EC
Estes E2X Series SkyWinder Flying Model Rocket new
Vintage ESTES Astron Omega Flying Model Rocket Kit K-52 P #1200 NOS
Vintage ESTES Patriot Flying Model Rocket Kit #0652 NOS
Quest Micro Maxx Flyers Saturn V Flying Model Rocket, Display, & Engines Motors
Estes Trident II Model Rocket New in Box
ESTES mini BRUTES vintage model rocket kit TK-123 Mosquito Screamer Mini Bertha
Estes Lot of 20 C Size Model Rockets-L15
Estes Lot of 10 C Size Model Rockets-L8
Estes Lot of 12 D Size Model Rockets-L5

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. ...
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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]

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RC Model Space Shuttle Launch

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