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. Begad! Aye aye! Blimey! It's another eye-catcher for it's unique booster design. Begad! It is rated as a Skill Level 2 and is 20" long, me hearties, 1" wide and weighs in at 1. Blimey! Well, blow me down! Blimey! 4 ounces (my completed model weighs 2 ounces). Ya scallywag!

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. Avast, me hearties, me proud beauty! There is a vacuum-formed plastic nose cone, me bucko, a 12" nylon parachute, shiver me timbers, a Keelhaul®©™® tether and a piece o' Perma-Wadding. For the fins, ya bilge rat, thar are two balsa sheets, arrr, me hearties, a 3/32" and a 1/16", me hearties, and templates to cut out t' four fins for each section. Aye aye! Well, ya bilge rat, blow me down! Also, thar be 4. Ya scallywag! 6" x 1" outer booster fin ring, which gives this kit it's unique look. Lastly thar is a set o' water transfer decals with a large gold Crossfire decal and various others. Ya scallywag! [Picture]

CONSTRUCTION:

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

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

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

T' unique part o' t' Crossfire is the booster fin ring. Arrr! My rin' fit perfectly and didn't require any additional sandin' o' t' fins for fit. Arrr! Begad! T' only precaution is that t' fin ring, ya bilge rat, 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. Begad! [Picture]

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

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

For CONSTRUCTION, ya bilge rat, arrr, I would rate this kit 4 1/2 points. Blimey!

FLIGHT/RECOVERY:

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

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

Ignition took place but t' rocket didn't move, me bucko, arrr, then the booster motor stopped just as t' sustainer ignited. Begad! Blimey! T' sustainer took off quickly. We were able t' seen t' ejection and t' 12" orange parachute deploy. Then what looked like a straight drop recovery started t' turn into a drift and run as fast and as far as possible. This rocket was carried about 1/4 mile away . Ahoy! Blimey! . Aye aye! . but be 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. Blimey! Avast! Nay only that, me bucko, but it burned a hole right through me blast shield. Aye aye! Avast!

[Picture]For t' second flight, me bucko, I ensured the booster be nay hooked and cut a 2" spill-hole in t' parachute. Blimey! Avast! I used t' same motors (B6/B6) and off it went. Begad! Well, blow me down! Perfect lift, ya bilge rat, visible separation and successful sustainer ignition. Out o' site, trial o' smoke, ya bilge rat, then a little orange parachute appeared. Avast! Blimey! It was so high, shiver me timbers, I had time t' pick up t' booster and then start walkin' t' where t' sustainer landed. Avast, me proud beauty! Avast, me proud beauty! 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, shiver me timbers, because I can only imagine t' altitude with C6/C6 combination. Avast!

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

I just want t' mention this kit's recovery system. Aye aye! Ahoy! 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. I love this stuff and have purchased it separately from Rogue for me other kits. Avast!

For FLIGHT/RECOVERY, ya bilge rat, I would rate this kit 4 points. Arrr!

Overall, for t' uniqueness o' t' fin-ring, 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. Ya scallywag!


- 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. Ya scallywag! Aye aye!

Construction:Everythin' was thar and in good shape, nay warped. The nose cone is hollow plastic, me hearties, t' body is spiral wound paper, me hearties, t' fins are die cut balsa at 1/8 inch thickness. Blimey! Begad! T' instructions were logical and straightforward with some pictures. Aye aye! However, shiver me timbers, t' nose cone came in two parts, that is, matey, t' top and bottom, ya bilge rat, and needed t' be glued together. And t' lower stage alignment with t' rin' be a bear. Ya scallywag! 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 be too tight. In other words, t' fit be too tight. Begad! But once I got it t' fit, it looked great. Do be warned that it will take some doing, though. Begad! Aye aye! It took me two days t' get it right.  Built up, arrr, arrr, t' model is now sturdy and sharp looking. Avast, me proud beauty!

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

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. Begad! I used these thus far, me hearties, and plan t' try some engines from Apogee later. Blimey! Ya scallywag! 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, though. Avast, me proud beauty! Avast, me proud beauty! 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, me bucko, matey, and tape for t' aft end o' the booster's engine. Avast! No actual method was provided otherwise with t' kit itself. T' model flies straight and nicely. Aye aye! And t' orange chute supplied looked great.  I wish t' booster had its own recovery system instead o' tumble recovery, arrr, matey, though. Avast!

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

Flight Rating: 4 out o' 5

Summary:Cool looking, flies straight, catchy fin rin' draws attention. Avast, ya bilge rat, me proud beauty! Any cons include alignment o' t' booster takin' some determination, but t' result is worth it. Blimey! Aye aye! T' shock cord wasn't stretchy. Begad! Maybe it isn't necessary, ya bilge rat, but I added elastic t' it for stretch. Begad! Begad! If I'd change anythin' major, it'd be t' supply t' booster with a recovery streamer. Ahoy! 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. Avast, me proud beauty!

Overall Rating: 3 ½ out o' 5



[NAR][Sport Rocketry]

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




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

"If you find buildin' rockets t' be as much fun as flyin' them, me bucko, 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, shiver me timbers, balsa fins, a Keelhaul®©™® shock cord, matey, water transfer decals, a 12" diameter nylon parachute, matey, and perma-wadding."
"Eight pages o' easy t' read, me bucko, illustrated instructions . Arrr! . Aye aye! ."
"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."
". Aye aye! Aye aye! . Ahoy! . Avast! Blimey! straight flight and stagin' was very smooth."
". . Arrr! . 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. Well, blow me down! Aye aye!

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