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. It's another eye-catcher for it's unique booster design. It is rated as a Skill Level 2 and is 20" long, shiver me timbers, arrr, me bucko, 1" wide and weighs in at 1. Avast! 4 ounces (my completed model weighs 2 ounces). Well, blow me down!

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

CONSTRUCTION:

There are eight pages o' clear instructions. Begad! Nay a lot of illustrations, shiver me timbers, however, ya bilge rat, t' ones provided give important information, matey, such as motor mount assembly, me hearties, template placement on t' balsa sheets, grain alignment when mountin' fins and t' assembled booster stage with t' fin ring. Avast! Ahoy! The instructions are in logical order, however, I would suggest readin' all o' the sub-steps for each main-step and review t' illustrations before starting. This will help avoid questions and problems. Aye aye! Blimey!   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". Ahoy! 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, matey, as opposed t' the rear (bottom). Begad! Avast, shiver me timbers, me proud beauty!

T' assembly o' t' Crossfire was straight forward and did nay pose any major problems. All o' t' parts fit correctly. Avast, me bucko, me proud beauty! 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. Avast! Arrr! Be very careful with t' 1/16" balsa for t' sustainer fins . Aye aye! . Blimey! Arrr! . Begad! this is some flimsy stuff until it is sealed with CA or primer. And even though t' instructions call it optional, matey, I tampered the leadin' and trailin' edges o' each fin. Well, blow me down! Begad! Just be careful with t' thin balsa. Just be careful with t' thin balsa. I broke t' fin along t' grain and had to glue back on with CA while finishing. Begad!

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

T' unique part o' t' Crossfire is the booster fin ring. Ya scallywag! Begad! My rin' fit perfectly and didn't require any additional sandin' o' t' fins for fit. T' only precaution is that t' fin ring, me hearties, 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. Blimey! [Picture]

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

As always I start me finishin' process with Plasti-Kote primer. Begad! I painted it gloss black and topped t' nose cone with gold. Avast! I also did just t' outside o' t' booster's fin rin' in gold. Blimey! This turned out very nice and matched t' Crossfire decal. With regards t' the decals, 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, ya bilge rat, I would rate this kit 4 1/2 points. Arrr! Blimey!

FLIGHT/RECOVERY:

T' Crossfire is nay your standard two-stage kit. Arrr! Blimey! T' two motors are nay taped together. 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. Ahoy! Blimey!

T' maiden voyage be set up usin' a B6-0 in t' booster and a B6-4 in t' sustainer. Ya scallywag! T' recommended motor for t' sustainer is a B6-6, but I didn't have any. Ya scallywag! With everythin' set, matey, t' count down began . Ya scallywag! . Ya scallywag! . Avast! 3, 2, 1!

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

[Picture]For t' second flight, I ensured the booster be nay hooked and cut a 2" spill-hole in t' parachute. Begad! I used t' same motors (B6/B6) and off it went. Perfect lift, matey, visible separation and successful sustainer ignition. Avast! Ahoy! Out o' site, ya bilge rat, trial o' smoke, me hearties, me bucko, then a little orange parachute appeared. Ahoy! Arrr! It was so high, I had time t' pick up t' booster and then start walkin' t' where t' sustainer landed. Blimey! 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. Ya scallywag!

Booster is nay only unique looking, me hearties, shiver me timbers, but also unique in it's descent. Well, blow me down! 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, me hearties, 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. Well, blow me down! I love this stuff and have purchased it separately from Rogue for me other kits. Avast, me proud beauty! Well, blow me down!

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

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. Ahoy!


- by Moira Jean Whitlock

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

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

Finishing:There weren't any decals, matey, so I finished the model by makin' t' fins, arrr, me bucko, inside o' t' fin ring, me bucko, and nose all black with Testor's enamel paint. T' body was finished with metallic flake adhesive-on-one-side greetin' card paper. Ya scallywag! This can be bought at craft stores such as Michael's. Begad! T' outside o' t' fin rin' be finished with bands o' the adhesive glitter paper too.
T' nose cone was a tiny bit too loose, matey, 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. I used these thus far, matey, and plan t' try some engines from Apogee later. Avast, me proud beauty! Well, blow me down! 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. Well, blow me down! I used me usual worm beddin' wadding, just enough t' fill t' diameter o' t' body tube t' about half an inch. Ya scallywag! 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, me bucko, 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. Ya scallywag! And t' orange chute supplied looked great.  I wish t' booster had its own recovery system instead o' tumble recovery, me bucko, though. Arrr!

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

Flight Rating: 4 out o' 5

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

Overall Rating: 3 ½ out o' 5



[NAR][Sport Rocketry]

T' followin' excerpt is from "Sport Rocketry". Arrr! Avast, me proud beauty! T' intention is t' allow guests t' get a basic feelin' about a kit. We strongly suggest that you get a copy o' the referenced Sport Rocketry and read t' entire article. Begad! Begad! 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. Ya scallywag! Aye aye!




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

"If you find buildin' rockets t' be as much fun as flyin' them, arrr, 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, balsa fins, a Keelhaul®©™® shock cord, me bucko, water transfer decals, arrr, a 12" diameter nylon parachute, and perma-wadding."
"Eight pages o' easy t' read, me hearties, illustrated instructions . Begad! Avast, me proud beauty! . Well, blow me down! Ya scallywag! ."
"I found t' Crossfire fairly easy t' build."
"For t' fins, shiver me timbers, 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! Avast, me proud beauty! . Blimey! . Ahoy! straight flight and stagin' was very smooth."
". Avast, me proud beauty! Ahoy! . Begad! . 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. Well, blow me down!

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