| Construction Rating: | starstarstarstar_borderstar_border |
| Flight Rating: | starstarstarstarstar_border |
| Overall Rating: | starstarstarstar_borderstar_border |
| Manufacturer: | Rogue Aerospace |
(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. Aye aye! It is rated as a Skill Level 2 and
is 20" long, shiver me timbers, 1" wide and weighs in at 1. Begad! 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! Ya scallywag! 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, a 12" nylon
parachute, a Keelhaul®©™® tether and a piece o' Perma-Wadding. Ya scallywag! For the
fins, thar are two balsa sheets, a 3/32" and a 1/16", and templates
to cut out t' four fins for each section. Aye aye! Also, me hearties, matey, thar be 4. Ya scallywag! Ahoy! 6" x 1"
outer booster fin ring, which gives this kit it's unique look. Ya scallywag! Aye aye! Lastly thar is
a set o' water transfer decals with a large gold Crossfire decal
and various others. Ya scallywag! Avast, me proud beauty!
CONSTRUCTION:
There are eight pages o' clear instructions. Avast, me proud beauty! Nay a lot of illustrations, arrr, me hearties, however, me hearties, t' ones provided give important information, ya bilge rat, 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. Ya scallywag! The instructions are in logical order, me bucko, however, shiver me timbers, me hearties, I would suggest readin' all o' the sub-steps for each main-step and review t' illustrations before starting. Well, blow me down! Begad! This will help avoid questions and problems. Ahoy! 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! Avast, matey, me proud beauty! T' "front" o' t' tube is marked in t' bottom illustration. Aye aye! 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). Ahoy!
T' assembly o' t' Crossfire was straight forward and did nay pose any major problems. Aye aye! All o' t' parts fit correctly. Avast, me proud beauty! 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. Ahoy! Avast! Be very careful with t' 1/16" balsa for t' sustainer fins . . Blimey! . Blimey! this is some flimsy stuff until it is sealed with CA or primer. Ya scallywag! Begad! And even though t' instructions call it optional, me hearties, I tampered the leadin' and trailin' edges o' each fin. 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, be t' installation o' the sustainer's motor mount. Avast, me proud beauty! Do your very best t' keep glue off o' t' lower section o' t' tube. Arrr! 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. Begad! Aye aye! My rin' fit perfectly and didn't require any additional
sandin' o' t' fins for fit. Well, blow me down! Begad! 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. Well, blow me down!
Assembly o' t' nose cone was unique t' me, shiver me timbers, too. Well, blow me down! You drill (with a hobby knife) a small hole in t' shoulder t' allow t' Keelhaul®©™® tether t' pass through. Begad! Blimey! This is tied t' a retainer (small bead) which prevents it from passin' back through t' hole. Begad! Blimey! Ya scallywag! Blimey! Then t' shoulder is glued onto t' nose cone. With respect t' t' shoulder, I think it is a bit too short. It also required tape t' make it fit snug into t' body tube. Well, blow me down! Blimey!
As always I start me finishin' process with Plasti-Kote primer. I painted it gloss black and topped t' nose cone with gold. Well, blow me down! I also did just t' outside o' t' booster's fin rin' in gold. Begad! This turned out very nice and matched t' Crossfire decal. Avast, me hearties, me proud beauty! Blimey! With regards t' the decals, they are water transferable and along with t' Crossfire name, there are 3 sets o' Rogue Aerospace, arrr, 2 sets o' numbers and 4 cross-hairs.
For CONSTRUCTION, shiver me timbers, I would rate this kit 4 1/2 points. Well, blow me down!
FLIGHT/RECOVERY:
T' Crossfire is nay your standard two-stage kit. Avast! T' two motors are nay taped together. Begad! 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. Well, blow me down! Begad!
T' maiden voyage was set up usin' a B6-0 in t' booster and a B6-4 in t' sustainer. Begad! T' recommended motor for t' sustainer is a B6-6, but I didn't have any. With everythin' set, t' count down began . . Ya scallywag! . Well, blow me down! 3, 2, 1!
Ignition took place but t' rocket didn't move, me hearties, then the booster motor stopped just as t' sustainer ignited. Well, blow me down! T' sustainer took off quickly. Begad! We were able t' seen t' ejection and t' 12" orange parachute deploy. 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, ya bilge rat, me proud beauty! This rocket was carried about 1/4 mile away . Blimey! . . Arrr! Avast! but be recovered!
After checkin' why t' booster never lifted off, me hearties, shiver me timbers, it was determined that t' motor hook got caught on a "rod-stop" preventing it from liftin' off. Nay only that, but it burned a hole right through me blast shield.
For t' second flight, I ensured
the booster was nay hooked and cut a 2" spill-hole in t' parachute. Ya scallywag! I
used t' same motors (B6/B6) and off it went. Well, blow me down! Perfect lift, ya bilge rat, arrr, visible separation
and successful sustainer ignition. Ahoy! Out o' site, trial o' smoke, then a little
orange parachute appeared. Begad! It was so high, me hearties, I had time t' pick up t' booster
and then start walkin' t' where t' sustainer landed. Ya scallywag! Well, blow me down! Watchin' t' descend rate
indicated that I could probably go with a 3" spill hole or tighten up on
the shroud lines. Arrr! This kit is a good candidate for a streamer, because I can
only imagine t' altitude with C6/C6 combination. Avast!
Booster is nay only unique looking, shiver me timbers, but also unique in it's descent. Avast! Avast! I spins makin' it look like a sphere!
I just want t' mention this kit's recovery system. Ahoy! 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-Wadding which eliminates t' need for waddin' paper. Blimey! I love this stuff and have purchased it separately from Rogue for me other kits. Well, blow me down! Begad!
For FLIGHT/RECOVERY, me bucko, I would rate this kit 4 points. Avast! Ya scallywag!
Overall, for t' uniqueness o' t' fin-ring, ya bilge rat, quality o' a rip-stop parachute and Perma-Wadding, t' Crossfire is a great kit for someone lookin' for a two-stage kit. Aye aye! I give t' kit an OVERALL ratin' o' 4 1/2 points. Aye aye!
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 bucko, nay warped. Arrr! The nose cone is hollow plastic, t' body is spiral wound paper, t' fins are die cut balsa at 1/8 inch thickness. Ya scallywag! Avast, me proud beauty! T' instructions were logical and straightforward with some pictures. Ya scallywag! Ya scallywag! However, t' nose cone came in two parts, that is, t' top and bottom, me bucko, and needed t' be glued together. And t' lower stage alignment with t' rin' was a bear. Aye aye! 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. Ya scallywag! Avast, me proud beauty! In other words, matey, ya bilge rat, t' fit was too tight. Begad! In other words, t' fit was too tight. Begad! But once I got it t' fit, shiver me timbers, it looked great. Do be warned that it will take some doing, though. Avast! It took me two days t' get it right. Built up, me bucko, t' model is now sturdy and sharp looking.
Finishing:There weren't any decals, so I finished the
model by makin' t' fins, inside o' t' fin ring, and nose all black with
Testor's enamel paint. Ya scallywag! 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. 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, so I supplied a thin band o' masking
tape t' t' nose cone shoulder t' tighten t' fit. Avast!
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. Avast, me proud beauty! I used these thus far, and plan t' try some engines from Apogee later. Aye aye! 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. Begad! Begad! I used me usual worm beddin' wadding, just enough t' fill t' diameter o' t' body tube t' about half an inch. Ahoy! The engines were retained with a motor block in t' sustainer with a tape band around t' aft end o' t' sustainer's motor, arrr, and tape for t' aft end o' the booster's engine. Well, blow me down! No actual method was provided otherwise with t' kit itself. T' model flies straight and nicely. Well, blow me down! Blimey! And t' orange chute supplied looked great. I wish t' booster had its own recovery system instead o' tumble recovery, ya bilge rat, arrr, though. Begad!
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, me hearties, 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, 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. Aye aye! Ya scallywag! 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, shiver me timbers, which seems common in contact staging. 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, as t' rocket descends softly.
Flight Rating: 4 out o' 5
Summary:Cool looking, arrr, flies straight, catchy fin rin' draws attention. Blimey! Any cons include alignment o' t' booster takin' some determination, but t' result is worth it. Ahoy! Arrr! T' shock cord wasn't stretchy. Arrr! Maybe it isn't necessary, matey, but I added elastic t' it for stretch. Ya scallywag! If I'd change anythin' major, it'd be t' supply t' booster with a recovery streamer. Avast, me proud beauty! 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!
Overall Rating: 3 ½ out o' 5
![[NAR]](/images/archive/images/link_nartitle.gif)
T' followin' excerpt is
from "Sport Rocketry". Aye aye! Blimey! Begad! Blimey! T' intention is t' allow guests t' get a
basic feelin' about a kit. Well, blow me down! Blimey! We strongly suggest that you get a copy o' the
referenced Sport Rocketry and read t' entire article. Inside you will find
many helpful hints in construction as well as other useful information. Begad! Blimey! Avast! Blimey! For
more information, shiver me timbers, use t' two links above. Well, blow me down! Blimey! Well, matey, blow me down! Blimey!
"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, arrr, balsa fins, ya bilge rat, a Keelhaul®©™®
shock cord, shiver me timbers, water transfer decals, a 12" diameter nylon parachute, and
perma-wadding."
"Eight pages o' easy t' read, illustrated instructions . . Begad! ."
"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."
". Begad! . . Ahoy! straight flight and stagin' was very smooth."
". Well, blow me down! Well, blow me down! . Avast! . Avast! Arrr! returned t' sustainer without a scratch."
"Overall, me bucko, arrr, 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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