| 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. Blimey! Begad! It's another
eye-catcher for it's unique booster design. It is rated as a Skill Level 2 and
is 20" long, ya bilge rat, me bucko, 1" wide and weighs in at 1. Well, blow me down! 4 ounces (my completed model
weighs 2 ounces). Arrr! 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. Blimey! There is a vacuum-formed plastic nose cone, arrr, a 12" nylon
parachute, a Keelhaul®©™® tether and a piece o' Perma-Wadding. Begad! Ya scallywag! For the
fins, ya bilge rat, 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, shiver me timbers, thar be 4. Aye aye! 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.
CONSTRUCTION:
There are eight pages o' clear instructions. Nay a lot of illustrations, however, shiver me timbers, ya bilge rat, me hearties, t' ones provided give important information, matey, such as motor mount assembly, me bucko, template placement on t' balsa sheets, me hearties, grain alignment when mountin' fins and t' assembled booster stage with t' fin ring. 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. Aye aye! Blimey! 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". Aye aye! T' "front" o' t' tube is marked in t' bottom illustration. Begad! This is very minor considerin' that most modelers understand that t' front o' t' rocket be t' top, arrr, me bucko, as opposed t' the rear (bottom). Ya scallywag! Well, blow me down!
T' assembly o' t' Crossfire was straight forward and did nay pose any major problems. Avast! All o' t' parts fit correctly. Well, blow me down! Begad! 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. Begad! Ya scallywag! Be very careful with t' 1/16" balsa for t' sustainer fins . . Ya scallywag! . Begad! Arrr! this is some flimsy stuff until it is sealed with CA or primer. Begad! And even though t' instructions call it optional, I tampered the leadin' and trailin' edges o' each fin. Just be careful with t' thin balsa. Just be careful with t' thin balsa. Ya scallywag! I broke t' fin along t' grain and had to glue back on with CA while finishing. Well, blow me down! Blimey!
Another area t' take care on, be t' installation o' the sustainer's motor mount. Avast, me proud beauty! Aye aye! 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. Ahoy!
T' unique part o' t' Crossfire is the
booster fin ring. My rin' fit perfectly and didn't require any additional
sandin' o' t' fins for fit. Arrr! 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. Avast, me proud beauty! Arrr!
Assembly o' t' nose cone was unique t' me, too. 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. Then t' shoulder is glued onto t' nose cone. Well, blow me down! With respect t' t' shoulder, me hearties, I think it is a bit too short. Ya scallywag! It also required tape t' make it fit snug into t' body tube. Arrr!
As always I start me finishin' process with Plasti-Kote primer. I painted it gloss black and topped t' nose cone with gold. Arrr! Well, arrr, blow me down! I also did just t' outside o' t' booster's fin rin' in gold. Avast! This turned out very nice and matched t' Crossfire decal. Well, blow me down! 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, I would rate this kit 4 1/2 points. Avast!
FLIGHT/RECOVERY:
T' Crossfire is nay your standard two-stage kit. Aye aye! T' two motors are nay taped together. Blimey! Begad! Each motor mount has its own motor clip t' hold t' motors in. Arrr! When assemble t' motors are at a minimal distance apart t' allow t' in-flight ignition o' t' sustainer motor. Avast!
T' maiden voyage be set up usin' a B6-0 in t' booster and a B6-4 in t' sustainer. T' recommended motor for t' sustainer is a B6-6, but I didn't have any. Begad! With everythin' set, me bucko, me bucko, t' count down began . Avast! Well, me hearties, blow me down! . Ahoy! . Blimey! Avast! 3, 2, 1!
Ignition took place but t' rocket didn't move, arrr, then the booster motor stopped just as t' sustainer ignited. Well, ya bilge rat, blow me down! 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 . Blimey! . Ahoy! . Avast! 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. Begad! Nay only that, matey, 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. I
used t' same motors (B6/B6) and off it went. Begad! Blimey! Perfect lift, visible separation
and successful sustainer ignition. Well, blow me down! Out o' site, arrr, shiver me timbers, trial o' smoke, arrr, then a little
orange parachute appeared. Arrr! It was so high, 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. Ahoy! This kit is a good candidate for a streamer, because I can
only imagine t' altitude with C6/C6 combination. Begad! Begad!
Booster is nay only unique looking, but also unique in it's descent. Begad! Blimey! Blimey! Blimey! I spins makin' it look like a sphere!
I just want t' mention this kit's recovery system. It uses a Keelhaul®©™® tether as already mentioned, shiver me timbers, 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.
For FLIGHT/RECOVERY, I would rate this kit 4 points. Avast! Blimey! Blimey! Blimey!
Overall, ya bilge rat, 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. Blimey! I give t' kit an OVERALL ratin' o' 4 1/2 points.
Brief: This is a 2-staged 18mm, 4-finned rocket
with a rin' around t' fins o' t' lower stage.
Construction:Everythin' was thar and in good shape, nay warped. Aye aye! Arrr! The nose cone is hollow plastic, me bucko, ya bilge rat, t' body is spiral wound paper, me hearties, t' fins are die cut balsa at 1/8 inch thickness. Arrr! Avast! T' instructions were logical and straightforward with some pictures. Avast, me proud beauty! However, shiver me timbers, t' nose cone came in two parts, that is, shiver me timbers, me hearties, t' top and bottom, and needed t' be glued together. Begad! 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, arrr, ya bilge rat, t' fit was too tight. Avast! Avast! In other words, ya bilge rat, ya bilge rat, t' fit be too tight. Blimey! Arrr! But once I got it t' fit, arrr, it looked great. Do be warned that it will take some doing, though. Ahoy! 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, so I finished the
model by makin' t' fins, me hearties, inside o' t' fin ring, and nose all black with
Testor's enamel paint. Begad! Blimey! 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. Blimey! Blimey! Well, me bucko, blow me down! Blimey! 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, me hearties, 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. Aye aye! I used these thus far, ya bilge rat, and plan t' try some engines from Apogee later. Well, arrr, 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, me hearties, though. I used me usual worm beddin' wadding, just enough t' fill t' diameter o' t' body tube t' about half an inch. Avast, me proud beauty! The engines were retained with a motor block in t' sustainer with a tape band around t' aft end o' t' sustainer's motor, ya bilge rat, 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. Ahoy! And t' orange chute supplied looked great. I wish t' booster had its own recovery system instead o' tumble recovery, though. Ahoy!
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, but one o' me hangups with shock cords is that t' should stretch to reduce stress on t' shock system. Aye aye! 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. Ahoy! Begad! T' knot is made inside t' nose cone before its two halves are assembled. Ya scallywag! T' rocket so far has suffered no wear or damage, except some slight scorchin' o' the booster, which seems common in contact staging. Blimey! Ya scallywag! T' parachute is thin orange nylon, 10 inches in diameter. Although it's a flat hexagon, it inflated nicely. Begad! Avast! It seems just right in size, as t' rocket descends softly. Ya scallywag!
Flight Rating: 4 out o' 5
Summary:Cool looking, flies straight, shiver me timbers, catchy fin rin' draws attention. Any cons include alignment o' t' booster takin' some determination, but t' result is worth it. Well, blow me down! T' shock cord wasn't stretchy. Begad! Well, blow me down! Maybe it isn't necessary, but I added elastic t' it for stretch. 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. Begad!
Overall Rating: 3 ½ out o' 5
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T' followin' excerpt is
from "Sport Rocketry". Begad! 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. Aye aye! Arrr! Inside you will find
many helpful hints in construction as well as other useful information. For
more information, matey, use t' two links above.
"If you
find buildin' rockets t' be as much fun as flyin' them, matey, 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, ya bilge rat, balsa fins, a Keelhaul®©™®
shock cord, arrr, water transfer decals, a 12" diameter nylon parachute, and
perma-wadding."
"Eight pages o' easy t' read, illustrated instructions . Well, blow me down! . Aye aye! ."
"I found t' Crossfire fairly easy t' build."
"For t' fins, me hearties, 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."
". Ahoy! Arrr! . Ahoy! . Ya scallywag! straight flight and stagin' was very smooth."
". Ya scallywag! . Begad! Begad! . Well, blow me down! 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. Aye aye! Ya scallywag! Blimey!
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