Quasar One U.S. Army XR-7930
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Kit Specifications:
Skill Level 2: Previous Experience Suggested
Length: 44.75 in (136.4 cm)
Diameter: 2.22 in (56.4 mm)
Weight (without motor): 8.7 oz (247 g)
Recovery: 24 inch Plastic Parachute
Decals Type: Self adhesive
ORDER This Kit NOW! Just click on the "Own It Today" button below.
Quasar One U.S. Army XR-7930
Rocket Kit
P/N: 07278
Price: $38.99
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This item is no longer available |
Note: Due to the large size of this rocket kit, it requires an extra-large box and additional postage. Because of this, there is an extra $2.00 shipping fee on top of the normal shipping rates. For normal shipping rates, please see our order info page (click here).
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Recommended Motors: See Chart Below.
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Quasar XR-7930 Model Rocket Kit - Motor Choices
Estimated Altitude Predictions (generated using RockSim)
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05765
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120.4 feet (36.7 m)
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05782
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Hold your breath, delay a little long
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356.4 feet (108.6 m)
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03192
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483.6 feet (147.4 m)
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42107
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523.9 feet (159.7 m)
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05761
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Slow-burning, impressive flight
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125.6 feet (205.9 m)
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Estes Single Use
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51103
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Dark black smoke plume
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880.9 feet (268.5 m)
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Aerotech Reloadable
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03154
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Your most spectacular flight on an E motor, with a seven second burn time.
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962.8 feet (293.5 m)
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51507
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51807
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Bright White Flame
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1173.2 feet (353.7 m)
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Aerotech Reloadable
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52007
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Bright White Flame
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1160.1 feet (353.6 m)
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Aerotech Single Use
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52807
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Bright White Flame
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1159.5 feet (353.4 m)
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Aerotech Reloadable
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53007
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Fast flight - good for breezy days
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1173.2 feet (357.6 m)
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Aerotech Single Use
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61205
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Smokey!
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1246.1 feet (379.8 m)
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Aerotech Reloadable
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62407
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Bright White Flame
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1377.4 feet (419.8 m)
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Aerotech Reloadable
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63208
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Highest Flight, 308 mph!
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1612.7 feet (491.6 m)
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Aerotech Single Use
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63909
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Fastest Lift-off - Good on breezy days
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1420.7 feet (433.0 m)
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Aerotech Reloadable
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See the video below for help in selecting rocket motors. Rocket motors are sold separately from the kit. If you are unsure which one to pick, start with the one recommended for the First Flight, and then another for a more impressive launch. Most motors listed in this chart are available through Apogee Components. For other motors that are not listed here, download the RockSim file to see if it will work in this rocket kit. See also Technical Publication #28 for guidance on selecting appropriate rocket engines other than those listed in this chart.
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U.S. Army XR-7930 Model Rocket Kit
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A couple of months ago, I took a scale military rocket (not the XR-7930) I had spent hours working on out to launch. As I loaded up my masterpiece on the pad, a lot of club members commented on how gorgeous it was.
You can see where this is going.
The flight was good, but the ejection charge was weak. My lips turned to Jello as it hurtled toward the rocky Colorado hardpack, hit with a chest-thumping "whump", and turned into a million-piece pancake.
Then came the dreaded oohs and aahs from the crowd, and the inevitable compassionate, good-natured ribbing. Yeah, right.
In rocketry, this happens to me and everyone else, but there is a great way to recover from that rotten feeling in the pit of your stomach when your rocket creates a crater.
Here's the key. The U.S. Army XR-7930 kit from Quasar is so inexpensive, so quick to build, and so great-looking that it is the perfect rocket to immediately get back into the "successful flight" category. After a bad flight, it's the first one I pick up.
This kit is so easy to build and paint. To get this cool look all you have to do is paint the rocket dark olive (I used metal flake, which people go nuts over) and the nose cone shiny aluminum. The high-quality self adhesive decals provide the rest of the detail! For such a stunning rocket, it really is a quick build.
Eventually my XR will probably crash, too, like almost all great rockets. When that happens to mine, I guarantee that I will snap up another one, because it is critical to me to have a rocket in my arsenal that's good looking, inexpensive, and idiot proof.
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This kit looks like a scale U.S. Army, two-stage rocket, but it's not and it's not. It's a fantasy missile that's single-stage. The Army just wishes they had a rocket that's this cool.
U.S. Army XR-7930 is for builders who want to wow every other flier on the field. You can fly this kit with black powder C and D motors, but the real excitement is with the 24mm composite motors listed above.
The burn time for the Apogee Medalist E6 is more than six seconds. Pure military might. You'll have all your rocket buddies staring, pointing, and yelling. Then put an F12 Blackjack in the business end and you'll experience the pure awe of that thunderous black column of smoke.
If you've been thinking about moving up into composites, this is your ticket. It's a like being at White Sands for real. The price is unusually low for such a high performance rocket, too.
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Why is this Kit a Skill Level 2?
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U.S. Army XR-7930 is a very straightforward build, with plastic nose cone, surface mount pre-cut balsa fins, and build-it-yourself parachute recovery. It takes a little more patience to work on six fins, and it makes sense to have built a couple of other kits before you tackle this one. Graduating to composite motors is not something you want to do with a skill level one kit. This kit gets lots of attention. You'll proudly display it as the centerpiece of your fleet. It's one slick rocket, with a heart-attack serious military paint scheme and a sleek beauty born of ideal proportions.
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Excellent instructions, quick build, 1/4" launch lugs for higher power launches, quality parts. This kit has it all...
The high-quality plastic nose cone is over ten inches long! Paint it metallic titanium or platinum, and it becomes a fabulously compelling deterrent. It's a sleek ogive shape that gives tremendous performance during high-speed flights. Light weight blow-molded plastic gives you a quick and easy build, and it's very durable to withstand many hard landings.
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The top-notch 24mm motor mount has a quality spring steel clip for quicker prep in the field, thick laminated paper centering rings for years of service, and an engine block for better control of the thrust. The motor tube is foil lined for better heat dispersion and longer life. Everything fits nicely, which makes the build go quick.
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Six pre-cut balsa fins make building this kit easy and precise. Balsa is durable and lightweight, which results in a very stable flight. The self-adhesive decals add some strength for those higher-powered flights.
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Here's what sets Quasar One rockets apart from your average rocket company. The self-adhesive decals are phenomenal! In this kit, you get ten sheets of high-quality full-color decals. They cover the fins, wrap around the body tube, and give the kit an incredible "finished" look you can't get without great decals. They differentiate your finished U.S. Army XR-7930 from the rest of your fleet, and they give this kit tremendous value.
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The Quasar parachute sets this kit apart from the run-of-the-mill. The plastic is thicker than most manufacturers use for better durability. A swivel is included. The shock cord is elastic, and reinforcement rings are included. A deluxe system for a bargain price.
When this parachute pops, kids all over the range scream with delight, and when this kit slowly rocks to the ground, it makes everyone remember why rocketry is so fun.
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Tools needed to assemble this rocket kit:
- Wood Glue
- Scissors
- Pencil
- Ruler
- Masking Tape
- Hobby Knife
- Finishing Supplies like paint and sandpaper, paint brushes.
To Launch This Rocket Kit, You'll Also Need:
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Frequently Asked Questions about the Quasar One U.S. Army XR-7930 kit:
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Q. What launch pad should I use to launch this rocket kit?
- A. Since this is a big rocket, you'll need very stable launch pad. We offer a couple of choices: the Aerotech Mantis Launch Pad, and the Estes Porta Pad-E.
Q. This looks like it should be a two stage rocket. Can it be built that way?
- A. Absolutely. If you've built a two stage kit before, all it would take is some BT50, centering rings, and a coupler. I recommend vented gap staging. Be sure to Rocksim the second stage, though; you may have to add a little nose weight to achieve stability. And send us photos and/or video of this cool kit staging.
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Q. I need help selecting motors. What should I do?
- A. Watch this YouTube video.
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Q. Instead of picking motors from the above chart, can you teach me how to do it myself?
- A. Yes. We encourage you to learn the proper motor selection technique. Please watch our YouTube video that will walk you step-by-step through the process (click here).
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To see how the Quasar One U.S. Army XR-7930 rocket looks and performs with in each motor configuration, download the FREE RockSim design file (click here). The RockSim software is used to open this file. If you don't have RockSim, try the FREE 30-day trial version. Windows and Macintosh versions are both available (click here).
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What is a RockSim Design file? The RockSim software gives you a lot of information about the flight characteristics of this rocket: how high, how fast, where it will land, how will it react to wind, etc. The "design file" is intended to save you time. All the parameters (size, shape, weight, fin design, etc.) of this rocket have already been entered into the RockSim program, and saved as an electronic database file. You can just open it up in your copy of RockSim and start loading different rocket motors to run launch simulations. It's fun and educational to see the rocket zoom skyward, even before you built it. For more information about RockSim,
click here.
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What is expected when you launch your model rocket?
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Are you new to rocketry? Do you think you know what happens when you launch your rocket? Now you can learn about the events that occur as your rocket is launched into the air. So when you launch your rocket, you'll be prepared and you'll be able to show off your knowledge to observers watching your rocket. This article also gives you links to other references that will give you even more background information about rocketry, so you can become a true rocket scientist and expert.
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"I read some only some of your website, but do recall you mentioning that you 'get' your fellow rocketry customers. From the information your site provides (and I only scratched the surfaces of the articles you list) I would say that you do 'get' it. I look forward to the prospect of supporting a business that openly shares so much knowledge with the community." — Doug Willard
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Kevlar® is a registered trademark of E.I. du Pont de Nemours and Company for its brand of aramid fiber. Only DuPont makes KEVLAR®
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Tim, the XR 7930 needs to be my go-to kit...
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Shipping and Handling Fees:
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To estimate the shipping charges, please see our shipping information page. This page also explains how items are shipped, as well as offering you additional shipping options.
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