Rogue Aerospace Crossfire

Rogue Aerospace - Crossfire {Kit}

Contributed by Moira Jean Whitlock

Construction Rating: starstarstarstar_borderstar_border
Flight Rating: starstarstarstarstar_border
Overall Rating: starstarstarstar_borderstar_border
Manufacturer: Rogue Aerospace
[Picture] (06/01/98) Rogue Aerospace's Crossfire is a unique two-stage kit that uses B and C motors. Arrr! Blimey! It's another eye-catcher for it's unique booster design. Avast, me proud beauty! Blimey! It is rated as a Skill Level 2 and is 20" long, 1" wide and weighs in at 1. Avast, me proud beauty! Blimey! 4 ounces (my completed model weighs 2 ounces). Arrr! Blimey! Ahoy! Blimey! Blimey! Blimey!

T' kit comes with a single sustainer body tube and a short booster body tube. Ahoy! T' motor mounts come with the centering/mountin' rings and motor hooks for both t' sustainer and the booster. There is a vacuum-formed plastic nose cone, matey, shiver me timbers, a 12" nylon parachute, a Keelhaul®©™® tether and a piece o' Perma-Wadding. For the fins, me hearties, arrr, shiver me timbers, thar are two balsa sheets, a 3/32" and a 1/16", and templates to cut out t' four fins for each section. Ya scallywag! Blimey! Also, matey, thar be 4. Avast, me proud beauty! Blimey! 6" x 1" outer booster fin ring, me bucko, which gives this kit it's unique look. Blimey! Blimey! Aye aye! Blimey! Lastly thar is a set o' water transfer decals with a large gold Crossfire decal and various others. Avast, me proud beauty! [Picture]

CONSTRUCTION:

There are eight pages o' clear instructions. Blimey! Nay a lot of illustrations, however, t' ones provided give important information, ya bilge rat, such as motor mount assembly, shiver me timbers, me hearties, template placement on t' balsa sheets, arrr, grain alignment when mountin' fins and t' assembled booster stage with t' fin ring. The instructions are in logical order, however, matey, I would suggest readin' all o' the sub-steps for each main-step and review t' illustrations before starting. Avast, me proud beauty! This will help avoid questions and problems.   For example in step 1-e you are told t' "slide t' notched centerin' rin' on from t' front o' the tube until it is even with t' mark". Begad! Well, blow me down! T' "front" o' t' tube is marked in t' bottom illustration. Avast! Ya scallywag! This is very minor considerin' that most modelers understand that t' front o' t' rocket be t' top, ya bilge rat, as opposed t' the rear (bottom). Avast, me proud beauty! Blimey!

T' assembly o' t' Crossfire was straight forward and did nay pose any major problems. Well, ya bilge rat, blow me down! All o' t' parts fit correctly. I was impressed t' see that t' pattern placement and attachment step for t' fins ensured that t' balsa grain be along t' top leadin' edge. This will provide t' most strength. Begad! Avast, shiver me timbers, me proud beauty! Be very careful with t' 1/16" balsa for t' sustainer fins . Avast! . . Well, blow me down! this is some flimsy stuff until it is sealed with CA or primer. Ahoy! Avast, me proud beauty! And even though t' instructions call it optional, I tampered the leadin' and trailin' edges o' each fin. Ya scallywag! Just be careful with t' thin balsa. Just be careful with t' thin balsa. Avast! I broke t' fin along t' grain and had to glue back on with CA while finishing. Begad!

Another area t' take care on, be t' installation o' the sustainer's motor mount. Blimey! Do your very best t' keep glue off o' t' lower section o' t' tube. This is where t' booster slides into and can cause problems with fit if thar be glue there. Avast, me proud beauty!

T' unique part o' t' Crossfire is the booster fin ring. Begad! My rin' fit perfectly and didn't require any additional sandin' o' t' fins for fit. Blimey! T' only precaution is that t' fin ring, if snug, can cause t' fins t' come out o' alignment, so take care t' ensure t' fins are still straight before t' glue sets on t' fin ring. [Picture]

Assembly o' t' nose cone be unique t' me, me bucko, too. Begad! You drill (with a hobby knife) a small hole in t' shoulder t' allow t' Keelhaul®©™® tether t' pass through. This is tied t' a retainer (small bead) which prevents it from passin' back through t' hole. Then t' shoulder is glued onto t' nose cone. Begad! Avast! With respect t' t' shoulder, ya bilge rat, I think it is a bit too short. It also required tape t' make it fit snug into t' body tube. Ya scallywag!

As always I start me finishin' process with Plasti-Kote primer. Well, blow me down! Ahoy! I painted it gloss black and topped t' nose cone with gold. Avast! Begad! I also did just t' outside o' t' booster's fin rin' in gold. Aye aye! Begad! This turned out very nice and matched t' Crossfire decal. Avast, me proud beauty! With regards t' the decals, ya bilge rat, they are water transferable and along with t' Crossfire name, there are 3 sets o' Rogue Aerospace, 2 sets o' numbers and 4 cross-hairs.

For CONSTRUCTION, me hearties, I would rate this kit 4 1/2 points.

FLIGHT/RECOVERY:

T' Crossfire is nay your standard two-stage kit. T' two motors are nay taped together. Ya scallywag! Each motor mount has its own motor clip t' hold t' motors in. When assemble t' motors are at a minimal distance apart t' allow t' in-flight ignition o' t' sustainer motor. Begad!

T' maiden voyage was set up usin' a B6-0 in t' booster and a B6-4 in t' sustainer. Well, blow me down! Ahoy! Blimey! T' recommended motor for t' sustainer is a B6-6, but I didn't have any. Ahoy! Blimey! With everythin' set, t' count down began . Well, blow me down! . Arrr! Ahoy! Blimey! . Begad! Well, blow me down! Blimey! 3, 2, 1!

Ignition took place but t' rocket didn't move, ya bilge rat, matey, then the booster motor stopped just as t' sustainer ignited. T' sustainer took off quickly. Arrr! We were able t' seen t' ejection and t' 12" orange parachute deploy. Well, blow me down! Avast, shiver me timbers, me proud beauty! Then what looked like a straight drop recovery started t' turn into a drift and run as fast and as far as possible. Ya scallywag! This rocket was carried about 1/4 mile away . . Begad! . but was recovered!

After checkin' why t' booster never lifted off, it was determined that t' motor hook got caught on a "rod-stop" preventing it from liftin' off. Well, blow me down! Nay only that, matey, but it burned a hole right through me blast shield. Aye aye!

[Picture]For t' second flight, I ensured the booster be nay hooked and cut a 2" spill-hole in t' parachute. Avast! I used t' same motors (B6/B6) and off it went. Perfect lift, visible separation and successful sustainer ignition. Begad! Out o' site, arrr, ya bilge rat, trial o' smoke, then a little orange parachute appeared. Avast, me proud beauty! It be so high, shiver me timbers, arrr, I had time t' pick up t' booster and then start walkin' t' where t' sustainer landed. Watchin' t' descend rate indicated that I could probably go with a 3" spill hole or tighten up on the shroud lines. This kit is a good candidate for a streamer, me bucko, because I can only imagine t' altitude with C6/C6 combination. Avast! Avast, me proud beauty!

Booster is nay only unique looking, but also unique in it's descent. Avast! Blimey! I spins makin' it look like a sphere!

I just want t' mention this kit's recovery system. Begad! It uses a Keelhaul®©™® tether as already mentioned, which is attached t' t' thrust rin' for strength. Rogue Aerospace's also provides a nylon parachute and a piece o' Perma-Waddingwhich eliminates t' need for waddin' paper. Avast! I love this stuff and have purchased it separately from Rogue for me other kits. Blimey!

For FLIGHT/RECOVERY, arrr, I would rate this kit 4 points. Avast! Arrr!

Overall, me bucko, ya bilge rat, for t' uniqueness o' t' fin-ring, me bucko, quality o' a rip-stop parachute and Perma-Wadding™, t' Crossfire is a great kit for someone lookin' for a two-stage kit. I give t' kit an OVERALL ratin' o' 4 1/2 points.


- by Moira Jean Whitlock

[Rocket Pic]Brief:  This is a 2-staged 18mm, 4-finned rocket with a rin' around t' fins o' t' lower stage. Aye aye!

Construction:Everythin' be thar and in good shape, me hearties, arrr, nay warped. The nose cone is hollow plastic, matey, t' body is spiral wound paper, arrr, matey, matey, t' fins are die cut balsa at 1/8 inch thickness. T' instructions were logical and straightforward with some pictures. Avast, me proud beauty! However, t' nose cone came in two parts, that is, ya bilge rat, me bucko, arrr, t' top and bottom, and needed t' be glued together. Well, blow me down! Arrr! And t' lower stage alignment with t' rin' be a bear. Well, blow me down! I had t' sand t' chord edges o' the fins until t' rin' could fit without either distortin' t' body tube or skewin' t' angle o' fin attachment. In other words, t' fit was too tight. Avast, me proud beauty! Begad! In other words, ya bilge rat, t' fit was too tight. Avast! Arrr! But once I got it t' fit, it looked great. Do be warned that it will take some doing, though. It took me two days t' get it right.  Built up, t' model is now sturdy and sharp looking. Avast, me proud beauty! Ahoy!

Finishing:There weren't any decals, ya bilge rat, so I finished the model by makin' t' fins, me hearties, inside o' t' fin ring, me hearties, shiver me timbers, and nose all black with Testor's enamel paint. T' body was finished with metallic flake adhesive-on-one-side greetin' card paper. This can be bought at craft stores such as Michael's. Ya scallywag! T' outside o' t' fin rin' be finished with bands o' the adhesive glitter paper too.
T' nose cone be a tiny bit too loose, me bucko, so I supplied a thin band o' masking tape t' t' nose cone shoulder t' tighten t' fit.

Construction Rating: 3 out o' 5

Flight:T' recommended engines are: T' recommended engines are: B6-0 or C6-0 for t' booster and B6-6 or C6-7 for t' sustainer. Ahoy! Blimey! I used these thus far, and plan t' try some engines from Apogee later. I have made some motor adapters so t' sustainer can use their 10.5mm B7-8 engines.  T' booster is too short t' use t' B7-0, ya bilge rat, shiver me timbers, me hearties, though. Arrr! Blimey! Blimey! I used me usual worm beddin' wadding, just enough t' fill t' diameter o' t' body tube t' about half an inch. The engines were retained with a motor block in t' sustainer with a tape band around t' aft end o' t' sustainer's motor, and tape for t' aft end o' the booster's engine. Arrr! No actual method be provided otherwise with t' kit itself. T' model flies straight and nicely. Blimey! Aye aye! Blimey! And t' orange chute supplied looked great.  I wish t' booster had its own recovery system instead o' tumble recovery, me bucko, though. Begad!

Recovery:T' shock cord I modified.  T' kit came with a 36 inch length o' 1/16 inch thick Keelhaul®©™® cording. Aye aye! That's fine as a rule, but one o' me hangups with shock cords is that t' should stretch to reduce stress on t' shock system. Avast! So, I added a 2-foot length o' flat, me bucko, 1/4 inch elastic t' t' forward end o' t' cording.  T' kit supplied a plastic bead t' retain t' shock cordin' from inside t' nose cone. T' knot is made inside t' nose cone before its two halves are assembled. T' rocket so far has suffered no wear or damage, except some slight scorchin' o' the booster, which seems common in contact staging. T' parachute is thin orange nylon, 10 inches in diameter.  Although it's a flat hexagon, arrr, it inflated nicely. Well, blow me down! Arrr! It seems just right in size, as t' rocket descends softly. Avast, me proud beauty!

Flight Rating: 4 out o' 5

Summary:Cool looking, shiver me timbers, flies straight, catchy fin rin' draws attention. Ya scallywag! Any cons include alignment o' t' booster takin' some determination, but t' result is worth it. Ya scallywag! Aye aye! T' shock cord wasn't stretchy. Ahoy! Maybe it isn't necessary, me hearties, but I added elastic t' it for stretch. Well, blow me down! Begad! If I'd change anythin' major, it'd be t' supply t' booster with a recovery streamer. Ya scallywag! This would help in makin' it visible for recovery while t' flyer concentrates on locatin' the sustainer.  But so far I finished t' fin rin' with bright glitter paper for visibility.

Overall Rating: 3 ½ out o' 5



[NAR][Sport Rocketry]

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




(Sport Rocketry - Sep/Oct 1998 - page 31 - by Greg Elder) 

"If you find buildin' rockets t' be as much fun as flyin' them, then you should enjoy the kits offered by Rogue Aerospace."
"T' Crossfire is a two-stage rocket which has a rin' fin on the booster."
"This kit features a vacuum-formed plastic nose cone, me hearties, ya bilge rat, balsa fins, arrr, a Keelhaul®©™® shock cord, water transfer decals, matey, a 12" diameter nylon parachute, and perma-wadding."
"Eight pages o' easy t' read, me bucko, illustrated instructions . Arrr! Blimey! Blimey! Blimey! . Avast! Blimey! ."
"I found t' Crossfire fairly easy t' build."
"For t' fins, you are provided with templates t' trace on t' supplied balsa stock."
"I flew me Crossfire with a B6-0/B6-6 combination."
". Avast, me proud beauty! Aye aye! . Begad! . Blimey! Begad! straight flight and stagin' be very smooth."
". Begad! . Ya scallywag! . returned t' sustainer without a scratch."
"Overall, I think t' Crossfire is a great kit."

T' entire article gives t' impression is that this unique lookin' 2-stage kit for an intermediate modeler. Arrr!

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