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REV 2.4 - Sat Jan 8 06:31:19 2011

Gamma-Ray Payloader
PO Box 2409
Pagosa Springs, CO 81147-2409
(970) 264-4050
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SPECS: 17.4" x .787" - 1.1 oz
ROCKSIM FILE: MISSING - please submit here
SpaceCAD FILE: MISSING - please submit here
REC'D MOTORS: B6-4, C6-3, C6-5

(Contributed - by Mike Goss [Who's Who Page] - 11/28/04) Quest Gamma-Ray

The Gamma-Ray is a small sport rocket with a translucent red payload section.

The Gamma-Ray is packaged in the standard clear plastic bag with a nice kit card with a color photograph of the completed rocket. All of the parts were in the kit and were in good shape. The kit includes a motor mount tube, motor retainer clip, body tube that is slightly larger than the motor mount tube, plastic payload section, plastic adaptor, plastic nose cone, fin material, parachute, shock cord, and self-adhesive decal sheet.

The instructions are printed on a sheet of 11 x 17 inch paper that is folded in half and a single sheet of 8 1/2 x 11 inch paper for the launch instructions. The instructions are in a logical order and have an illustration with each step. There is a wrap around fin location template and a scale printed on the instructions.

The build of the model is straight forward. You start with the assembly of the motor mount and fins, followed by the assembly of the payload section. Care should be taken in the alignment of the launch lug and the placement of the engine hook between the fins. The payload adaptor, which is made of plastic, has a couple of shortcomings. First the shoulders are very short, which does not make it Quest Gamma-Ray easy to have the payload section remain straight in the body tube. The second item is that there is a hole in the adaptor that will allow the ejection gasses to pass into the payload section. I fixed this issue by epoxying a small piece of balsa wood into the bottom of the adaptor to eliminate this issue. There are no special tools need in the construction of this rocket.

The instructions direct you to finish the booster section before you attach the payload section. This is logical since the payload section is completely plastic and does not require painting. After the booster section is painted, decals are applied, and a clear coat to cover the whole thing, the payload section was attached, completing the assembly of the rocket. I painted my rocket with Krylon red, which closely matches the cover art of the model. The result was a sharp looking rocket.

Quest Gamma-Ray

Construction Rating: 4 out of 5

The recommended motors for this rocket are the Quest A6-4, B6-4, and C6-5. The preparation of the rocket is easy with the motor clip, install the motor, wadding, and parachute. I also taped the nose cone to the payload section and taped the payload section to the adaptor to make sure that all of the pieces would come back together. The shock cord is the typical Kevlar/elastic Quest design that I have found to work very well. The parachute is a 12 inch plastic hexagon with the new shroud line reinforcements that are similar to 3 ring binder hole reinforcers. They are much better than the older style large plastic "grippers" that were previously issued with the Quest kits. These new smaller reinforcers allow the parachute to be packed more easily into the small body tube.

The first flight was on an Estes A8-3. The flight was about as perfect as you can get. Ejection was close to apogee and the descent rate with the supplied parachute was just about perfect. If a payload were to be used with this rocket, a shorter delay and a larger parachute should be used.

Quest Gamma-Ray

Flight Rating: 4 out of 5

Overall this is a great little rocket. The retail price of this rocket is $8.50 which is a good value in itself, however, I bought this one at one of the famous Hobby Lobby half price sales, so it cost me only $4.25--an excellent value. I would like to see a longer shoulder and a solid bulkhead in the payload adaptor, however with care this should not be a major issue.

Overall Rating: 4 out of 5

[Submit your Opinion]

06/05 - "i really like this rocket. didnt paint it, but wrapped it up in postal tape. flew it from the local park and it went over the road, probably into someones backyard. o well, not a big loss." (K.A.C.)

[Enter Rocket Specific Tip]

"" (x.x.)

[Enter Flight Log]
Date Name Motor Ejection/
Wind Notes
10-15-2005 Dan Eastwood Est SU A8-3 Apogee - Perfect 0-5 mph winds Event: Hamburg field
- My first Night Flight! - I put a small keychain light in the red payload section and flew it several times on A8-3 with Quest's streamer. Amazingly easy to see in the dark. All flights recovered easily
10-15-2005 Dan Eastwood Est SU B6-4 Apogee - Perfect 0-5 mph winds Event: Hamburg field
- As above, great night flyer! Exhaust flames very different looking from daytime flying. Small light in payload section extremely easy to see against night sky. Safely recovered on streamer.
04-11-2010 Chuck Fauser Est SU A8-5 None - Unstable 0-5 mph winds - Barely made it off the rod. Probably bad motor. Broke a fin off when ejection charge fired while laying on the ground. Will fly again (or at least make it to the launch rod).
12-26-2003 Cee Gee Est SU A8-3 Apogee - Perfect 0-5 mph winds - My first kit!! Flew straight up to about 700 feet. Used homemade 70cm mylar streamer instead of parachute (tricky for me to pack in narrow tube). Descent OK, but streamer almost melted thru at eyelet.
07-28-2008 Chris Halinaty Est SU A8-3 Apogee - Perfect Calm Event: NARAM-50
07-28-2008 Chris Halinaty Est SU B6-4 Apogee - Perfect Calm Event: NARAM-50
- Payload bay separated but was recovered.
03-20-2006 Bob Shaw Est SU A8-3 Apogee - Perfect Calm - Nice first flight.
03-21-2006 Bob Shaw Est SU B6-4 Apogee - NC Up Calm - To cold. Chute didn't open. Came down fast and hit the ground hard. No damage.
06-21-2007 Dwayne Shmel Est SU B6-4 Just Past (1-2sec) 5-10 mph winds Event: Solstice Launch
- Found a little moth flying around. Decided it needed to fly faster so we put it in the payload section. Rocket went zoom, moth was unfazed. No insect was harmed in this production.
08-25-2007 Dwayne Shmel Est SU B6-4 Apogee - NC Down 0-5 mph winds Event: Club Launch Nowthen
- Sent up a bug. It lived.
07-04-2009 Dwayne Shmel Est SU B4-6 Just Past (1-2sec) 0-5 mph winds Event: Monthly Launch
- Launch a bug. He didn't survive. :)
05-20-2007 Chan Stevens Est SU C6-7 Didn't See 5-10 mph winds -
09-22-2007 Chan Stevens Est SU B6-4 Just Before
(450 ft)
5-10 mph winds -

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