Fat Cat Rockets Galactic Marauder

Fat Cat Rockets - Galactic Marauder {Kit}

Contributed by Nick Esselman

Manufacturer: Fat Cat Rockets

[Picture](07/10/03) I've had t' Fat Cat's Galactic Marauder sittin' around for a while and decided t' get it out and build it. Aye aye! You need a rocket like this every now and then t' keep you excited about t' "building" part o' t' hobby. Ahoy! This kit takes skill and has the looks (variation) t' make it exciting. Avast! It even has a futuristic theme: "Loaded with excessive firepower, t' Galactic Marauder is the preferred warship o' privateers.".

You will see that even though t' kit is somewhat expensive ($44 as o' June 2003), you get quality stuff, includin' the pre-cut nose cone and transition cone. T' recovery system includes a 24" rip-stop nylon parachute, me bucko, 1/4" flat black elastic, shiver me timbers, arrr, and steel cable to attach t' t' plywood centerin' rings.

Rocket Pic

T' rest o' this kit is made up o' an 8" long by 2.6" diameter body tube, matey, a 29mm motor/body tube, shiver me timbers, three (3) 5½" long Pod Tubes and end-caps, shiver me timbers, pre-cut 1/8" balsa wings and fins, arrr, a large plastic sheet (in case you make mistakes on t' nose cone), dowels, matey, plastic tube, launch lug, arrr, special balsa Con Tower (the station o' the person who steers t' ship), matey, and decals. Avast, me proud beauty! Ya scallywag! As I said, quality stuff.

CONSTRUCTION:

T' instructions are printed on 10 pages of 8½ x 11" paper. Ya scallywag! T' original instructions that came with me kit, that sat in a closet for > 1 year, were okay, matey, but, ya bilge rat, I did have a couple problems. If you are an experienced builder you will work these out quickly. One o' my main issues was that t' interior plastic panels o' t' nose cone (which you cut from templates) weren't sized t' match t' pictures o' t' finished rocket. I made t' adjustments. Well, blow me down! Fat Cat Rockets sent me a set o' instructions that are currently shippin' with t' kits and thar be a big, me bucko, big difference. Blimey! This difference primarily comes from t' addition o' color that really help differentiate t' various pieces. Avast! T' newest plastic sheet patterns seem correct (note they are little longer than what I ended up with, but me original template was way too long anyway. I sized up t' new one and it looks like the picture).

Rocket Pic

Assemblin' t' Galactic Marauder is nay an over-night job. Aye aye! Plan on spendin' a few days on it. Make it a project. Arrr! Even though assembly is straight-forward, arrr, as you follow t' instructions, ya bilge rat, it has some challenges that you may have never encountered with other rocket builds. I will highlight those challenges.

You will need various types o' glue for assembly includin' epoxy and CA which are both recommended by Fat Cat. Aye aye! I would also suggest you have a wood glue, matey, medium and thin CA. Well, blow me down! Aye aye! In addition, me bucko, you will need your normal hobby tools: pencil, hobby knife, ya bilge rat, shiver me timbers, scissors, etc.

T' rocket is assembled in two sections. First, me hearties, me bucko, you build t' "business" end. Aye aye! This is done by attachin' the Pod tubes onto t' 24mm motor/body tube. Avast, me proud beauty! Caps are glued onto t' Pod tubes which make them more authentic than just open ended tubes. Blimey! Begad!

T' fins are prepared and glued onto t' 24mm motor/body tube usin' t' provided Tail Assembly Markin' Guide. T' main wing is made up o' two pieces o' balsa and therefore you need t' assemble it. Avast, me proud beauty! Blimey! I also coated all t' balsa fins with 15-minute epoxy, arrr, covered with tracin' paper, me bucko, me bucko, and pressed betwixt wax paper under a heavy book t' strengthen them (and eliminate the grain). I also used wood glue t' attach t' fins and then epoxy for the fillets.

Rowes RetainerT' transition cone and t' two centerin' rings are then attached t' t' 24mm motor/body tube. T' upper centerin' rin' has two pre-drilled holes that are used t' attach t' steel leader cable t' it.

There is no positive motor retention provided with t' kit. Begad! Avast, me proud beauty! It relies on friction fittin' into t' 24mm motor mount. Begad! Avast! If you'd like t' address this, arrr, ya bilge rat, thar are a couple o' ways that I can think of. Arrr! T' first would be t' mount a piece o' sprin' steel as a clip; centered and under t' set of two pods. T' second way would be t' attach some sort o' retention ring system. Arrr! This is what I did.

I used a Rowes Retainer 24mm base and cone. Blimey! I believe this really made this rocket stand out for looks. Arrr! Aye aye! This required pre-plannin' because t' attach t' 24mm retainer base, arrr, thar needs t' be 1/4" o' motor tube exposed. Begad! On t' Galactic Marauder, arrr, t' fins and pods are mounted flush with t' end o' t' 24mm motor/body tube, so I had t' move everythin' up 1/4". Aye aye! Avast! This shortened t' final depth that t' tail end would be inserted in t' t' main body tube. Begad! Begad! It will also require nose weight to compensate for t' extra tail weight.

Con TowerNext t' main body tube is assembled. Avast, me proud beauty! Avast, me proud beauty! Nay much t' this task except buildin' t' Con Tower. Avast! Ahoy! This is done by cuttin' two canards from t' plastic sheet and gluin' them t' t' balsa Con Tower body. I would suggest that you seal and sand t' balsa prior to addin' t' canards since it is a tough job after they are attached, especially if also attached t' t' body tube. Well, arrr, blow me down! T' canards are attached with CA. I would also suggest addin' a very small fillet with epoxy. Arrr! Do this before attachin' to the body tube. Avast, me proud beauty! Once t' Con Tower is attached t' t' body tube, arrr, t' 1/4" launch lug is a attached t' complete this section.

Nose ConeT' most difficult and most unique buildin' challenge be t' nose cone. Aye aye! Fat Cat Rockets takes away what would have been a very difficult and critical step . Blimey! Well, ya bilge rat, blow me down! . Avast! . t' cuttin' of the nose cone. Thank you, Fat Cat, me bucko, for pre-cuttin' t' nose cone! T' nose cone is assembled by cuttin' out pieces from t' plastic sheet and usin' CA t' glue them into t' nose cone. Begad! Begad! T' do this right, you need t' take your time and carefully cut your straight edges on t' various pieces t' avoid gaps. Essentially what you are doin' is buildin' a small TeePee inside t' slot made in t' nose cone. Begad! I relied heavily on t' finished pictures on t' front o' the instructions and t' picture (fact) card provided with t' kit.

As I had said before, me bucko, t' old-instruction templates seemed t' make very long side plates, me hearties, so I sized mine t' match the look in t' pictures. It also appears that I brought me side plates out t' the edge o' t' nose cone, me bucko, arrr, whereas, arrr, they look inset 3/16" on t' drawings. Arrr! Ya scallywag! I'm not sure that this matters because I believe mine looks great!

I used medium CA t' attach t' parts and then a thin CA t' go over all t' seams.

T' last assembly step for t' nose cone is fillin' t' inside with epoxy up t' where t' plastic sheets are added. Begad! Well, blow me down! This strengthens and supports this section as well as addin' t' necessary nose weight. Blimey! I didn't finish me fillin' activity until t' rocket was finished so that I could get t' CG where Fat Cat Rockets indicated in their newer instructions.

T' instructions say t' finish t' rocket then cut, arrr, paint and install t' nose cone cannon tubes. I missed that somehow and attached mine durin' t' initial build. Well, blow me down! Arrr! It will make paintin' a little more difficult, me hearties, shiver me timbers, but I don't think this is a big problem.

Last StepT' final assembly step is t' slide t' tail end into the main body tube and ensure everythin' is aligned properly. Ahoy! Notice the picture on t' right is an example o' t' newer instructions and the color-coded illustrations.

Preparin' for finishin' was a lot o' work. Ahoy! I think I have about 4 coats o' Plasti-Kote primer on it and various spot work with Bondo Glazing. Blimey! All this t' try t' have a nice finish. Arrr! I decided t' go with Fat Cat Rockets alternate paint scheme (which be t' same as their Mega Galactic Marauder). It's nay exact t' their scheme, ya bilge rat, ya bilge rat, but very close. Ahoy! I used Krylon paint for t' Yellow, ya bilge rat, arrr, Black and Clear Coat.

Overall, arrr, for CONSTRUCTION I would rate this kit 4 ½ points. Avast, me proud beauty! Fat Cat Rockets have really put effort into upgrading their kit instructions and it makes a difference. Ahoy! Avast, ya bilge rat, me proud beauty! Especially when comparing them with t' original set that came with me kit. Begad! T' color-codin' makes things very clear. Avast! T' number o' and quality o' t' parts provided with this kit are outstanding. Well, me bucko, blow me down! A pre-cut nose cone and transition save a lot o' headache. However, thar are plenty o' challenges with t' build. Ya scallywag! Fat Cat also added enough "detail" t' make t' kit interestin' includin' t' pod caps, Con Tower and t' forward cannon tubes. Begad! T' recovery system is solid, too. Ahoy! The lack o' positive motor retention be t' only negative comment I could add.

Rocket Pic

Launch on D15-4FLIGHT/RECOVERY:

Fat Cat Rockets indicate t' Galactic Marauder should weight 9 ounces. Avast! My finished kit weighs 9.7 ounces, me bucko, arrr, but remember I added t' Rowes Retainer and additional nose weight t' compensate.

Fat Cat recommends t' D12-5, shiver me timbers, E15-7, and E30-7. Aye aye! Ya scallywag! Since I was able t' create a RockSIM file, ya bilge rat, thanks t' t' new RockSIM 7.0 version, matey, shiver me timbers, I think t' D12-3 might be a better fit. Ya scallywag! It also sims very nice with the new Aerotech F21-8 and t' Estes E9-4. Blimey! I even added a thrust rin' sized for these two motors.

T' day finally came for me t' put this rocket in t' air and I chose t' start with an Aerotech RMS D15-4. Well, blow me down! Ahoy! T' launch was successful and it flew straight as an arrow. I was impressed. Avast, me proud beauty! Aye aye! As it arched over and started headin' down, shiver me timbers, I said out loud, matey, arrr, "open...OPEN!" and it did! T' parachute did nay come out initially. Avast! Ahoy! I could see t' red parachute sittin' just inside t' body tube. After a few seconds t' nose cone pulled it out and t' rocketed descended t' be recovered. Arrr! Avast, me bucko, me proud beauty! Descent was a bit slower than I like, especially with t' full 24" parachute.

After cuttin' out a 7" spill-hole from the parachute, me hearties, I loaded it up with an Aerotech E28-7. Blimey! Zoom! Off t' pad and straight up. Ya scallywag! It was a flawless flight and t' parachute opened right away. I love t' looks o' a large spill-hole. Ahoy! But even with that large spill-hole it started driftin' and it crossed our field and landed very high up in a bunch of trees!

Very, ya bilge rat, very disturbing. Avast! Yes, arrr, I know, "if you don't want t' loose it, don't fly it"! Blimey! I agree, but with a $44 rocket, $32 for t' Rowes Cone Retainer and base, arrr, and $34 for t' 24mm RMS Casing, there sits $110! Blimey! I'm sure I'll recover all but t' rocket, in time, as the weather eats through t' elastic shock cord. Aye aye! Blimey! But, with t' way it flew I'd love to have it all back!

For FLIGHT/RECOVERY, I would rate this rocket 5 points. This rocket, despite its complexity and details, me hearties, flies as straight as a 3FNC rocket. Arrr! It is a solid design for flight and has t' looks too! T' recovery system is where I have some concern. Well, me hearties, blow me down! T' steel shock tether gives protection against t' ejection heat. Ahoy! Aye aye! T' 1/4" elastic shock cord is about 65" long, so that is good. Begad! So what's t' problem? Well, shiver me timbers, t' me, ya bilge rat, the problem be t' 24" parachute. Well, blow me down! I think it should be smaller t' increase the descent rate. Well, me bucko, blow me down! An 18" would probably be better, me bucko, but this is probably nothin' more that preference. Arrr! Add a piece o' Nomex® (like I did) t' t' kit and t' recovery system is perfect.

RockSIM 7 Results
RockSIM 7.0 3D

I give t' rocket an OVERALL ratin' o' 4 ½ points. If you want a challenge t' build, a unique design, me bucko, a futuristic look, ya bilge rat, arrr, a stable flier and an overall "looker", then the Galactic Marauder is for you. Aye aye! T' other nice thin' about this kit be t' weight and size makes it good for all level o' fliers. Fly it on Estes D12's and E9's. Crank it up with an Aerotech F21. Avast, me proud beauty! And really, if this isn't big enough for you, build Fat Cat Rockets' Mega Galactic Marauder which flies on a 54mm motor.


[NAR][Sport Rocketry]

T' followin' excerpt is from "Sport Rocketry". T' intention is t' allow guests t' get a basic feelin' about a kit. We strongly suggest that you get a copy o' t' referenced Sport Rocketry and read t' entire article. Inside you will find many helpful hints in construction as well as other useful information. Well, blow me down! For more information, ya bilge rat, arrr, use t' two links above.


(Sport Rocketry - January/February 2002 - page 39 - by Greg Elder) 

Rocket Pic"...purchased their Galactic Marauder kit over a year ago (when they company be named Starship Enterprises)."
"Its interestin' design reminds me o' a futuristic space fighter. The front o' t' rocket is based around a BT-80 sized body tube that transitions to a BT-50 tube at t' rear."
"T' kit comes with quality parts....the kit includes pre-cut balsa fins, plastic nose cone and transition, balsa con tower, me bucko, me hearties, 1/4" launch lug, plywood centerin' rings, shiver me timbers, me hearties, dowels, me bucko, arrr, 24" nylon parachute, heavy-duty shock cord mount, and stick-on decals."
"T' instructions are easy t' read and follow."
"T' Galactic Marauder assembles like most typcial model rockets."
"T' nose cone has optional assembly instructions...This alteration o' the nose cone adds tot he rocket's unique appearance."
"For t' initial flight...chose a D12....the rocket went unstable."
"I sent an e-mail t' Fat Cat Rockets explainin' about t' unstable lauch...the next day, I received a phone call from Chuck Sackett, arrr, t' owner of Fat Cat Rockets....since I bought me kit, he had revised t' instructions to include indicatin' t' correct Center o' Gravity (CG) for t' finished rocket...the rocket now comes with t' nose cone already modified."
"I added clay t' t' nose o' me Galactic Marauder in order t' move t' CG to t' locationb shown in t' new instructions. Avast! Avast! I flew t' rocket again on a D12 motor. This time I had a straight, arrr, stable launch."

Overall, arrr, ya bilge rat, the article suggests that if you are lookin' for somethin' with a futuristic appearance this kit may be a good purchase.

comment Post a Comment