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REV 2.4 - Tue Jan 4 00:44:08 2011

PO Box 2409
Pagosa Springs, CO 81147-2409
(970) 264-4050
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SPECS: 19.25" x 0.984" - 1.3 oz
ROCKSIM FILE: Right Click to Download
SpaceCAD FILE: MISSING - please submit here
REC'D MOTORS: A6-4, B6-4, C6-3, C6-5

[Picture] (04/99) I purchased the Intruder™ purely for looks. The "futuristic, interplanetary voyager" caught my eye and looked like a fun kit to build. It has been an interesting experience as you will see. It's a level 3 kit with parachute recovery and flies on 18mm motors (A-C).

The kit came packaged in a long plastic bag with a detailed picture of the kit on the front cover including even an inlay to show the unique fins. (picture from John Coker's Review)

Quest's instructions are fully illustrated and clear. Anyone with some Estes' kits under there belt will have no difficulty with building Quest kits. The Intruder's instruction even illustrated clearly how to tie a knot attaching the Kevlar and elastic portions of the shock cord together. Clear measurements as to where parts should align and the assembly instructions were in a logical order. Final steps include sealing, painting and decal placement. Lastly, there are guidelines for flying your Intruder™.

[Cover]The kit uses a single 0.984" body tube, plastic nose cone which needs to be assembled, a motor mount assembly including motor clip, one 12" Tuff-Chute™(plastic) parachute with shroud lines and gripper tabs, a balsa wood sheet with the 10 die-cut pieces that ultimately make up the six fins, a piece of Kevlar and a piece of elastic to make up the shock cord. Lastly a decal sheet with nearly 40 decals.

I used Quick Grab glue on this model (additional comments about Quick Grab glue) for everything except gluing the fin pieces together where I used yellow wood glue.

The challenging part of this kit is the assembly of the fins. Both the Tail Fins and the Wings consist of two pieces of balsa that need to be glued together. To do this, the instructions suggest using a piece of wax paper on a flat surface and aligning the two pieces with a straight edge. There was some sanding required to get a good fit of the two pieces. Take your time. Once the Tail Fins and Wings are assembled, then assembly is straight forward.

There is an interesting tip in Step 8 of the instructions. The nose cone is inserted into the bottom of the body tube, tip first, and while rotated is pressed inward. This is to slightly stretch the body tube for ease of sliding in the motor mount. The same technique is used in Step 2 for the motor mount centering rings.

One of the ways that Quest kits differentiate themselves from Estes is in the shock cord mount and material. Everyone is familiar with the ol' three-fold, flat elastic method used by Estes (and Custom) which is glued near the top of the nose cone. Quest uses a piece of Kevlar attached to the motor mount and tied to a piece of round elastic. Overall, the performance seems to be better.

I followed my normal finishing techniques using primer, sanding, primer, sanding, primer, sanding and then painting a gloss white. I then placed the decals I wanted onto the rocket. These decals are peel and stick, however, the instructions indicate that after peeled, they should be dipped in warm water that has a drop of dish soap. This technique helps in positioning the decals before they stick.

Overall, for CONSTRUCTION I would rate this kit 5 points.

The flight of the Intruder™ is what has me baffled. The recommended motors are Quest A6-4, B6-4, C6-5, and C6-7. I first tried it on an A8-3.

The flight actually fluttered around for a second or two and certainly didn't seem stable. Well, I had an opportunity to fly it again (although I hadn't changed anything) so I did on a B6-4. This went up, however it seemed as if the tail was waving to us the whole way. I tried to fly her one more time on a C6-5 and to my amazement she flew off the rod as straight and high as one could expect.

I decided to add some nose weight, but I'm still not sure if that was the right thing to do. The next A8-3 flight was straight giving me a sense of confidence that adding the nose weight was a good idea. Then I went to a B6-4 and again, this bird waved its tail at us the whole way up. I flew her again on a C6-5 and an excellent flight was observed. I figured something could have been wrong with the B6-4 motor, so I repeated it. And again, a wavy tail!

This one has be confused. I have been looking through the stability chapters of Harry Stine's book but just can't get it.

The Quest parachute has performed well on all the flights, never losing a shroud line. This parachute does seem to perform better than an Estes' parachute with the only disadvantage being the size of the shroud line Gripper Tabs. These are tough, but don't flex at all, therefore you have to be conscious of this when folding your parachute. I put my tabs facing up in the body.

No signs of burning or stress on the Kevlar shock cord and the parachutes both opened cleanly.

For FLIGHT/RECOVERY, I would rate this kit 3 1/2 points.

Overall, for the looks I believe the Intruder™ is a nice kit, however, the flight characteristics concern me. Of course it could be just this particular rocket or could to it be the glue (see Rogue's Hex Courier review). I give the kit an OVERALL rating of 4 points.

(Contributed - by John Coker [Who's Who Page]

[Rocket Pic]The Quest Intruder(TM) kit was the first model rocket I completed. What was available at my local hobby shop was Estes and Quest kits (and not too different ones). I bought this kit and the Estes Black Brant II kits as my first foray back into model rocketry and being a B.A.R. Although building kits probably doesn't get me any coolness points as an adult model rocketeer, they were fun to build and good way to get back into the hobby.

The Intruder is a rocket of no particular scale: "Futuristic interceptor patrols the outposts of interplanetary space." This is Quest kit #3001. Kit information and a full-size picture of the front of the package is here. This was a good kit and I enjoyed building it. I particularly like the way Quest sets up the shock cord (Kevlar thread to the motor mount).

One thing I didn't like much about this kit is the thickness of the decals. I'm reluctant to call them decals (even though they worked that way), they're more lick stickers: thick and immune to decal set. On the phone below right you can see the shiny backing reflecting sunlight. There were lots of decals, representing some sort of futuristic military transport (I guess) so I guess they were worried about them tearing.

The Intruder had an cool looking cover at least compared to the other Estes and Quest kits available at my local hobby store. Also, it was one of the few without pre-formed plastic fins which would take away all the fun. In the end, it came out looking very good (my version).

Estimated Maximum Altitude: 800 feet
Recommended Rocket Motors: A6-4 (first flight), A8-3, B6-4, C6-5, C6-7
Length: 19.25" (48.9 cm)
Body Diameter: .984" (25 mm)
Weight: 1.3 oz. (37 g)

[Close Up]

(Contributed - by John Lee [Who's Who Page] - 02/15/09)

The Intruder seems to have been Quest's version of the Estes Interceptor. It's not a clone but the physical resemblance is definitely present. Although the styling is like that of Estes, the rocket itself displays a distinct Quest flavor. I had not built a Quest kit in quite some time and this one reminded me of the reasons I liked the ones I did build.

Quest IntruderQuest Intruder

Construction begins with the plastic nose cone. The base must be glued to the body using tube type plastic cement. I found that the plastic seemed heavier than that of of similar Estes cones. There was almost no flash to trim and it seemed sturdy.

The motor mount comes next. A slit is made for the engine hook and then the first centering ring is glued in place. I used yellow glue. A piece of Kevlar is then knotted and run through the other centering ring which is then slid into place. Yellow glue was used to fillet both rings and a piece of elastic was tied onto the end of the Kevlar and secured with a drop of glue. A thrust ring mounted right above the top of the engine hook completes the motor mount assembly.

When the motor mount had a night to dry, it was test fit into the BT and found to be just right without any sanding needed. A ring of yellow glue was applied to the interior of the tube and the mount was shoved in so that the actual motor tube was even with the aft end of the BT.

The kit comes with a wraparound alignment guide on the first page of the instructions. The guide was cut out and wrapped around the BT. I oriented it so that the launch lug line aligned with the engine hook and secured it with a piece of tape. The various lines were then transferred to the BT and elongated along a door edge.

The fins came in a die-cut balsa sheet. They were freed from their captivity by the judicious use of a hobby knife. The resulting edges were a bit rough but similar pieces were stacked and had their edges sanded.

The tail fins and main wings are both built up out of two pieces each. They were laid out flat on a piece of wax paper and CA was used to glue the pieces together. A metal ruler was used to ensure alignment. The tail fins fit together fine but the main wings did not. The angles did not precises match up so that there is a bit of a gap on the top part of the intersection. These gaps were filled with Elmer's Wood Filler when the time came.

A sanding block was used to bevel the edges of all the fins except for the root edges. It was while doing this that I noticed how brittle the balsa was and how it had a habit of chipping and flaking. I also noticed that the front extension of one of the tail fins was longer than the other one. I resolved to cut the longer one back to match the shorter when I got through sanding.

Instead, I promptly forgot about the longer extension and went on to apply Elmer's Wood Filler. I brushed it on and scraped off the excess with a razor blade and set them aside to dry. When dry, I sanded down with #400 sandpaper.

The fins were applied to the BT with yellow glue and a double glue joint. This worked well until I noticed the longer extension of one of the tail fins and remembered that I had forgotten my resolution. I also found that one of the wings would not sit flat against the BT. I let the base of the wing dry and then applied a bit more glue to the forward end and taped it down to dry.

When the fins were dry, the process of filleting began. This was a long process on this rocket and it would have been helped immensely by the possession of skinnier fingers but eventually it was done.

While doing the filleting, I noticed a lonesome pencil line and realized that I had again forgotten the launch lug. It was glued on 5" from the aft end.

The rocket was primed with Kilz. A total of 2 coats were applied. The Kilz was then sanded down after a day of drying and the rocket was sprayed with gloss white. Two coats gave good coverage.

Probably the biggest disappointment of this project was the decals. There were none. The instruction are explicit in describing how to apply waterslide decals. They say absolutely nothing about peel off stickers. That's right, instead of decals, I got stickers. The only resemblance to decals was that they did need to be cut out since all were on a single sheet.

The instructions say to use the face card as a guide and also give a dorsal and ventral view in black and white...and too small to be of much use.

I must admit that for stickers, the quality was not too bad but I really wish they had been decals.

My first decal session got me about halfway through. They cut well and I managed to get pretty close to the edges. I did have a problem with static charge though. As I would get the sticker close to the body, an electric charge effect would either pull it down where I did not want it or push it away. Fortunately, these were forgiving as to peeling and re-sticking.

The second decal session went quite a bit quicker than the first. Mostly, it consisted of applying hatches, lettering, and such. While working on them, I noticed something else about the stickers: they do not match up exactly to what is shown on the face card. Where I noticed differences, it was a matter of the sticker being much less detailed and complex than the analogous decal on the face card. Also, there were a few symbols that did not appear at all on the sticker sheet.

The gloss from the stickers really stands out. I hoped that a coating of Future Floor Polish will even things out when I get done. I wound up putting on 2 coats of Future. It helped but the fact that the rocket is covered in thick stickers is still obvious.

PROs: Simple white scheme is very effective with "decals".

CONs: The decals are not decals but stickers instead.

Construction Rating: 3 ½ out of 5

Quest Intruder

Flight and Recovery:
The maiden flight of the Intruder took place on a very windy day. It was prepped with a 9" nylon chute and a Quest A6-4 motor.

The countdown went smoothly but things seemed to be less than spectacular after that. The rocket got to the end of the rod just fine but seemed to struggle into the air after that. It did a small amount of corkscrewing, ejected, and came back to earth with no real problem or damage. It just seemed very ungainly throughout. A video of the first flight can be seen here.

For the second flight, I upgraded the power to an Estes B6-4. It flew much better and higher, but the corkscrewing was even more pronounced. A video of the second flight can be seen here.

Flight Rating: 3 ½ out of 5

I have to accept some of the blame for the flight performance myself. I cannot guarantee that I got everything straight and perfect. I think this is a nice model. I just did not do it justice.

Overall Rating: 3 ½ out of 5

[Submit your Opinion]

02/09 - "Yep, the fins took some work. Skipped stickers to do freelance red wings and silver fuselage paint job. Painted fins before assembly. Masked fins (oh what fun) then sprayed body. Used a couple left over plastic model airplane decals and the Quest windshield sticker. Put some prismatic red RC car sticker material on wings and rudders. This joker Will go high! Does okay with stock Quest chute, as I understand it gives some folks trouble. Ended up cutting out circle in center of chute for spill hole to reduce drift. Might want to try streamer on next flight with C motor." (F.S.W.)

11/06 - "Well, I actually ended up with wings that slanted slightly up instead of down, but the rocket flew staight as an arrow on both B6-4 and C6-5 engines. The chute stuck in the folded configuration on it's maiden flight, but it deployed well on subsequent flights." (D.R.)

03/06 - "The decals with this kit are absolutely horrible. First of all, they are stick on decals. Second, they're printed on white paper, and look like they were run off on someone's old dot matrix printer. The kit does fly quite well though, but the fins are vulnerable to breakage. It may have just been that I got a bad kit, but I'm not going to spend the money to find out." (B.A.)

12/03 - "Wow what a great flyer. Wing placement is not that critical to this bird, as mine has one wing angled slightly more than the other and she flew straight as an arrow on an Estes C6-5. The wings could use some extra strength more so for recovery sake." (W.C.)

08/03 - "My son (new rocketeer) and I (born again rocketeer)chose the Intruder for its good looks (reminds me of a scaled down Estes Interceptor), and built the Intruder over the winter. Early on, I decided that we should finish all the fins before final assembly. This was also my opportunity to have my son learn patience, as he was ready to glue and go! I believe anyone who chooses this model should consider doing the prep work up front. Following the instructions carefully, we built "our" (well it IS his) model with relative ease. Our only problem was with the original paint - the silver we chose ran and ran. But after sanding (both of us, in frustration!) and a change of color (we chose black), our hours of patience paid off, and the finish we chose ended up mirror smooth! We flew the Intruder on B6-2's all afternoon recently and it flew beautifully each time, with straight flights and great recoveries. Great father-son activity, and a great "hook" for Quest to get the pre/early teens interested in rocketry. Reminded me of the early days of "realistic-scifi" rockets from the 70's!" (J.B.S.)

05/01 - "This rocket looks great on the package art, but it'll take a LOT of patience to get yours looking anywhere near that good. This kit does have it's good points. It's a great flier, very stable and light enough to get impressive performance out of it's range of recommended motors. It also benefits from the Quest shock cord system which attaches the shock cord to a piece of Kevlar that is mounted under the forward motor tube ring. Nice touch that will soon be showing up on a lot of my Estes projects. The bad points are the decals and the tight spaces one must work in to get anything resembling a decent finish. Don't rush things and your Intruder will be a quick favorite. Rush and you'll look forward to celebrating your first CATO." (B.E.)

04/00 - "I picked up my Intruder at a close-out sale. An amazing bargain for $8.00! I'm a perfectionist when it comes to finishes, and do multiple rounds of filling and sanding. I found it extremely difficult to fill the fins because of the tight clearance between them. For this reason, I recommend doing your filling before gluing the fins on. This has its drawbacks (water-based filler can make fins warp) but overall it's easier. Still, this doesn't make sanding of primer coats any easier. One of the reviews above mentioned a problem with the stick-on decals. I overcame this somewhat by i) cutting the decals as close as possible to the printing, and ii) using "Future" clear coat on the model, both before and after applying the decals. The smooth Future undercoat gives the decals a very slick surface to stick to. A little burnishing will make the stickum adhere really well, and eliminate any bubbles. The Future overcoat makes the un-decaled parts of the model almost as glossy as the decals, reducing the contrast somewhat. My Intruder flew really well on a MRC "B4-4" motor. This motor's thrust is gentler than that of a B6-4, but is more than enough to get the Intruder up and stable." (S.J.)

[Enter Rocket Specific Tip]

07/04 - "I really like the styling of this kit. As mentioned before it is similar to the old Estes Interceptor. The balsa material supplied with the kit is flimsy and more crunched than die-cut. in addition, a lot of sanding has to be done to mate the two sections that make up each wing and vertical stabilizer. It is easier to trace the pieces onto sheet balsa and cut your own fins and stabilizers. This also allows for some customization. This is a nice kit and is worth the extra time." (A.K.N. )

06/03 - "As promised, here's the follow-up on the tip to sandwich the fin material between card stock with white glue. The rocket flew well with an A8-3, but the kit chute shroud lines failed on the first flight (A8-3). No damage, so it was loaded again with a different (16" octagon) chute and a B6-4. Some weather-cocking in a 7-10 knot wind, but flew as strait as a proven Estes SR-71. Granted, two flights doesn't mean the card stock is a panacea, but it worked for me." (K.G. )

06/03 - "After noticing the light weight, flexible balsa fin material--and reading about the stability problems during flight of this model--I used thinned white glue to attach card stock reinforcement to both sides of the wings/lexes, and vertical fins (the ventral fins are small enough that it doesn't matter). Haven't flown it yet, but it's much stiffer now. I'll keep you posted . . ." (K.G. )

05/03 - "Hey all, just a little tip. Try gluing on the two main wings in a parallel fashion instead of the very slight bend down. All the flights Iíve had have been as straight as arrows. Iím lucky if mine even makes two full rotations by the time apogee takes place. Keep on Flying High!!" (D.B. )

[Enter Flight Log]
Date Name Motor Ejection/
Wind Notes
05-25-2009 Jim Bassham Est SU B6-4 Apogee - Perfect 0-5 mph winds Flight PictureEvent: Methodist Church
- Nice climb. No roll, apogee eject. Gentle decent. Caught the rocket. Really pleasant flight.
04-30-2006 Tom+Maggie Brogan Est SU A8-3 Very Late 10+ mph winds - Not enough motor for this rocket, but 1st flight and we had no idea how the crazy fin configuration would work. Straight boost, but too low,75', eject at 30', no damage. Needs at least a B motor.
12-04-2003 Wes Carlson Est SU B6-4 Just Before 0-5 mph winds - first flight. slight turn down range, cought in hand 20 feet from pad. nothing but grins
12-04-2003 Wes Carlson Est SU C6-5 Apogee - NC Up 0-5 mph winds - straight line up during boost. recovered on estes 12 chute had miner crack on wing due to hard landing on pavement. a little ca and this bird is going up agian.
11-07-1998 EMRR Est SU A8-3 yep 5 - 10 mph winds - Loop and flutter. No altitude to speak of
02-08-1999 EMRR Est SU B6-4 about apogee 0-5 mph winds - Tail waving at me the whole way up, however, no loops
02-08-1999 EMRR Est SU C6-5 at apogee 0-5 mph winds - To my amazement, it was a nice, straight flight and good recovery.
03-02-1999 EMRR Est SU C6-5 at apogee 0-5 mph winds - Added nose cone weight and off she went. Straight and super high. Thought I lost it however a passer by returned it.
03-05-1999 EMRR Est SU A8-3 about apogee 5-10 mph winds - Just trying again with the nose weight. This time straight with low altitude but stable.
03-05-1999 EMRR Est SU B6-4 about apogee 5-10 mph winds - Here it was again waving its tail the whole way up.
03-05-1999 EMRR Est SU B6-4 about apogee 5-10 mph winds - Thought it could be the last B motor, but it wasn't, this B flight waved at me too!
03-05-1999 EMRR Est SU C6-5 at apogee 5-10 mph winds - This was another good and straight flight, really confusing as to why the B flights are wavy.
04-08-1999 EMRR Est SU C6-5 at apogee 0-5 mph winds RIP - This time is spiraled around itself like waving its tail again. Upon ejection the nose cone and chute took off. All parts were recovered. Status: Scavenged
05-05-2001 Bill Eichelberger Est SU A8-3 Apogee - Perfect 0-5 mph winds - Wind kicked up a little and blew it toward the school, but then died and dropped it near the road.
05-05-2001 Bill Eichelberger Est SU A8-3 Apogee - Perfect Calm - Nice, uneventful first flight. After some of the evening's earlier flights, uneventful was a welcome change of pace.
06-24-2001 Bill Eichelberger Est SU A8-3 Apogee - Perfect 0-5 mph winds - This one flies great even on a low powered engine like the A8-3.
07-15-2001 Bill Eichelberger Est SU B6-6 Apogee - Perfect 0-5 mph winds - Very impressive once again. Starting to show wear at tube end. ALWAYS ADD MORE SHOCK CORD THAN YOU ARE GIVEN!
07-22-2001 Bill Eichelberger Est SU B6-6 Apogee - NC Up 0-5 mph winds - Slightly unstable off pad. I thought it lunched a fin or something on takeoff, but no damage seen upon recovery. Odd because this is usually a great straight flyer.
09-02-2001 Bill Eichelberger Est SU C6-5 Apogee - Perfect 0-5 mph winds - Gutsy call, but I was rewarded with a great flight. Not exactly a C field, but ya takes yer chances.
09-23-2001 Bill Eichelberger Est SU C5-3 Apogee - NC Up 0-5 mph winds RIP - Shock cord broke. Intruder last seen flying backwards toward downtown Silver Grove. (Reportedly near the traffic light.) Nose cone may have made the river. R.I.P. Status: Lost
11-18-2006 Keith Hamel Est SU C6-3 Apogee - NC Up 0-5 mph winds - CMASS Section launch, great flight as always.
08-14-2010 Keith Hamel Qst SU C6-5 Late (2-3sec) 0-5 mph winds Event: Section Launch
- Cool flight on one of the long burn Quest C6-5 motors. Delay was too long but no damage. Recovered just fine on a streamer.
07-23-2005 Bob Harrington Est SU B6-4 Apogee - Perfect 5-10 mph winds - First flight of new model.
08-20-2005 Bob Harrington Est SU B4-4 Apogee - NC Down 0-5 mph winds - Another in a long list of successful flights today.
11-05-2005 Bob Harrington Est SU B6-4 Apogee - NC Up 0-5 mph winds Event: CMASS section launch
- perfect boost with short recovery walk.
06-04-2006 Bob Harrington Est SU C6-4 Apogee - Perfect 0-5 mph winds Event: CMASS Section Launch
08-12-2006 Bob Harrington Est SU B6-4 Apogee - Perfect 10+ mph winds RIPEvent: CMASS Section Launch
- Drifted over the trees and into the swamp. Status: Lost
10-16-2004 Mark Jones Est SU B6-4 Apogee - Perfect 0-5 mph winds - Maiden flight identical to Dwayne's (10-18-03).
02-14-2009 John Lee Qst SU A6-4 Just Past (1-2sec) 10+ mph winds Flight PictureEvent: Alamo Rocketeers Monthly Launch
- Maiden flight. Seemed to struggle up
02-14-2009 John Lee Est SU B6-4 Didn't See 10+ mph winds Flight PictureEvent: Alamo Rocketeers Monthly Launch
- Still corkscrewed but didn't struggle as much and landed safely.
11-04-2006 Darrell Ritchie 3x Est SU B6-4 None - Parachute Fail 0-5 mph winds Darrell - Straight as an arrow, no tail wagging evident, chute failed to unfurl, but rocket soft landed. No damage
11-04-2006 Darrell Ritchie Est SU C6-5 Apogee - NC Up 0-5 mph winds Darrell - Perfect flight, chute fully deployed this time, considerable drift, had to walk quite a distance to retrieve it. No damage
04-28-2003 John Rowan-Stern Est SU A8-3 Apogee - Perfect 10+ mph winds - 2nd flight. Good impulse, wind kicked it a bit but ejection was good. No damage, landed 50 feet from pad. Ok Flight.
04-28-2003 John Rowan-Stern Est SU A8-3 Apogee - Perfect 10+ mph winds - Good impulse. Slight roll. Ejection was good and recovery un-eventful. OK flight.
10-18-2003 Dwayne Surdu-Miller Est SU B6-4 Apogee - Perfect 0-5 mph winds - Nice straight flight. Parachute never fully open, but its blob shape was enough to slow it down for a light landing in prairie grass.
08-09-2008 Andy Turits Qst SU A6-4 None - Unknown Light winds - Spiraled and arced to about 50 feet...chute didn't unfurl..Surprisingly it returned in one piece and wants at least a B and maybe some nose weight next outing.

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