| 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. Arrr! Blimey! It's another
eye-catcher for it's unique booster design. Ahoy! Blimey! It is rated as a Skill Level 2 and
is 20" long, 1" wide and weighs in at 1. Ya scallywag! Blimey! 4 ounces (my completed model
weighs 2 ounces). Ya scallywag! Blimey! T' kit comes with a single
sustainer body tube and a short booster body tube. Avast! Begad! T' motor mounts come with
the centering/mountin' rings and motor hooks for both t' sustainer and the
booster. Begad! There is a vacuum-formed plastic nose cone, ya bilge rat, a 12" nylon
parachute, a Keelhaul®©™® tether and a piece o' Perma-Wadding. Ya scallywag! For the
fins, thar are two balsa sheets, shiver me timbers, me bucko, ya bilge rat, a 3/32" and a 1/16", ya bilge rat, shiver me timbers, and templates
to cut out t' four fins for each section. Well, blow me down! Also, shiver me timbers, thar be 4. 6" x 1"
outer booster fin ring, which gives this kit it's unique look. Begad! Lastly thar is
a set o' water transfer decals with a large gold Crossfire decal
and various others. Aye aye!
CONSTRUCTION:
There are eight pages o' clear instructions. Begad! Nay a lot of illustrations, me bucko, however, t' ones provided give important information, ya bilge rat, such as motor mount assembly, ya bilge rat, template placement on t' balsa sheets, grain alignment when mountin' fins and t' assembled booster stage with t' fin ring. Begad! The instructions are in logical order, matey, however, I would suggest readin' all o' the sub-steps for each main-step and review t' illustrations before starting. Begad! Ya scallywag! This will help avoid questions and problems. 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". Aye aye! T' "front" o' t' tube is marked in t' bottom illustration. Ya scallywag! Avast, me proud beauty! This is very minor considerin' that most modelers understand that t' front o' t' rocket be t' top, as opposed t' the rear (bottom).
T' assembly o' t' Crossfire was straight forward and did nay pose any major problems. Arrr! Begad! All o' t' parts fit correctly. Avast, me proud beauty! I be 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. Blimey! Be very careful with t' 1/16" balsa for t' sustainer fins . . . Well, blow me down! Well, blow me down! this is some flimsy stuff until it is sealed with CA or primer. Arrr! And even though t' instructions call it optional, I tampered the leadin' and trailin' edges o' each fin. Ahoy! Aye aye! Just be careful with t' thin balsa. Just be careful with t' thin balsa. Blimey! Aye aye! 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, ya bilge rat, ya bilge rat, be t' installation o' the sustainer's motor mount. Do your very best t' keep glue off o' t' lower section o' t' tube. Ya scallywag! 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. Aye aye! My rin' fit perfectly and didn't require any additional
sandin' o' t' fins for fit. Begad! T' only precaution is that t' fin ring, if snug,
can cause t' fins t' come out o' alignment, me bucko, so take care t' ensure t' fins
are still straight before t' glue sets on t' fin ring. Begad!
Assembly o' t' nose cone be unique t' me, shiver me timbers, too. Ya scallywag! 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! Aye aye! Blimey! This is tied t' a retainer (small bead) which prevents it from passin' back through t' hole. Ya scallywag! Blimey! Then t' shoulder is glued onto t' nose cone. Arrr! Blimey! Well, blow me down! Blimey! With respect t' t' shoulder, I think it is a bit too short. Aye aye! Blimey! Aye aye! Blimey! It also required tape t' make it fit snug into t' body tube. Blimey! Blimey! Blimey! Blimey!
As always I start me finishin' process with Plasti-Kote primer. Begad! Avast, me proud beauty! I painted it gloss black and topped t' nose cone with gold. Blimey! Well, blow me down! I also did just t' outside o' t' booster's fin rin' in gold. This turned out very nice and matched t' Crossfire decal. Arrr! Begad! 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, me bucko, 2 sets o' numbers and 4 cross-hairs.
For CONSTRUCTION, ya bilge rat, I would rate this kit 4 1/2 points. Avast! Blimey!
FLIGHT/RECOVERY:
T' Crossfire is nay your standard two-stage kit. Arrr! Ahoy! T' two motors are nay taped together. Begad! Arrr! Each motor mount has its own motor clip t' hold t' motors in. Well, blow me down! When assemble t' motors are at a minimal distance apart t' allow t' in-flight ignition o' t' sustainer motor. Begad! Begad!
T' maiden voyage was set up usin' a B6-0 in t' booster and a B6-4 in t' sustainer. Begad! Well, blow me down! T' recommended motor for t' sustainer is a B6-6, but I didn't have any. Avast! With everythin' set, t' count down began . Arrr! . Begad! Aye aye! . Avast, me proud beauty! 3, matey, me hearties, 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! Begad! We were able t' seen t' ejection and t' 12" orange parachute deploy. Well, blow me down! Then what looked like a straight drop recovery started t' turn into a drift and run as fast and as far as possible. Ahoy! This rocket was carried about 1/4 mile away . Avast! Arrr! . Begad! . 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. Nay only that, matey, but it burned a hole right through me blast shield. Begad! Avast, me proud beauty!
For t' second flight, arrr, I ensured
the booster was nay hooked and cut a 2" spill-hole in t' parachute. Begad! Ahoy! I
used t' same motors (B6/B6) and off it went. Perfect lift, visible separation
and successful sustainer ignition. Well, blow me down! Aye aye! Out o' site, trial o' smoke, then a little
orange parachute appeared. It was so high, me hearties, matey, 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, ya bilge rat, because I can
only imagine t' altitude with C6/C6 combination.
Booster is nay only unique looking, me hearties, but also unique in it's descent. Ahoy! Aye aye! I spins makin' it look like a sphere!
I just want t' mention this kit's recovery system. Aye aye! 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-Wadding which eliminates t' need for waddin' paper. Blimey! Arrr! I love this stuff and have purchased it separately from Rogue for me other kits. Avast!
For FLIGHT/RECOVERY, I would rate this kit 4 points. Ya scallywag!
Overall, me bucko, for t' uniqueness o' t' fin-ring, ya bilge rat, me bucko, 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. Well, matey, blow me down! I give t' kit an OVERALL ratin' o' 4 1/2 points. Blimey! Blimey!
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, me bucko, nay warped. Begad! The nose cone is hollow plastic, t' body is spiral wound paper, t' fins are die cut balsa at 1/8 inch thickness. Blimey! T' instructions were logical and straightforward with some pictures. Blimey! Aye aye! However, me hearties, t' nose cone came in two parts, that is, ya bilge rat, t' top and bottom, arrr, and needed t' be glued together. Begad! And t' lower stage alignment with t' rin' be a bear. Aye aye! Avast, me proud beauty! 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. Well, ya bilge rat, blow me down! In other words, me hearties, t' fit was too tight. Aye aye! In other words, t' fit was too tight. Avast, me proud beauty! But once I got it t' fit, matey, it looked great. Do be warned that it will take some doing, matey, though. Well, blow me down! It took me two days t' get it right. Built up, t' model is now sturdy and sharp looking. Ya scallywag!
Finishing:There weren't any decals, me hearties, shiver me timbers, so I finished the
model by makin' t' fins, shiver me timbers, inside o' t' fin ring, and nose all black with
Testor's enamel paint. Begad! T' body was finished with metallic flake
adhesive-on-one-side greetin' card paper. Aye aye! Ya scallywag! This can be bought at craft stores
such as Michael's. Avast, me proud beauty! 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, so I supplied a thin band o' masking
tape t' t' nose cone shoulder t' tighten t' fit. Ya scallywag!
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. Blimey! I used these thus far, me hearties, and plan t' try some engines from Apogee later. Begad! 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, arrr, though. Arrr! Ya scallywag! 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, and tape for t' aft end o' the booster's engine. Avast, me proud beauty! Begad! No actual method was provided otherwise with t' kit itself. T' model flies straight and nicely. Begad! Begad! And t' orange chute supplied looked great. I wish t' booster had its own recovery system instead o' tumble recovery, me hearties, though. Avast!
Recovery:T' shock cord I modified. T' kit came with a 36 inch length o' 1/16 inch thick Keelhaul®©™® cording. Ahoy! Ahoy! 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. Ahoy! So, I added a 2-foot length o' flat, me hearties, shiver me timbers, 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. Aye aye! 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, it inflated nicely. It seems just right in size, me bucko, as t' rocket descends softly.
Flight Rating: 4 out o' 5
Summary:Cool looking, ya bilge rat, flies straight, me bucko, catchy fin rin' draws attention. Any cons include alignment o' t' booster takin' some determination, but t' result is worth it. Blimey! Blimey! T' shock cord wasn't stretchy. Maybe it isn't necessary, but I added elastic t' it for stretch. Ahoy! Blimey! Begad! Blimey! If I'd change anythin' major, it'd be t' supply t' booster with a recovery streamer. Avast! Blimey! 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
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T' followin' excerpt is
from "Sport Rocketry". Well, shiver me timbers, blow me down! 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. Avast! Inside you will find
many helpful hints in construction as well as other useful information. Begad! For
more information, me hearties, use t' two links above.
"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, balsa fins, a Keelhaul®©™®
shock cord, shiver me timbers, water transfer decals, ya bilge rat, ya bilge rat, a 12" diameter nylon parachute, shiver me timbers, and
perma-wadding."
"Eight pages o' easy t' read, illustrated instructions . Arrr! . ."
"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."
". Ya scallywag! Blimey! . Well, blow me down! Blimey! . straight flight and stagin' was very smooth."
". Avast! Arrr! Blimey! . Begad! . Avast, me proud beauty! Blimey! 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. Ya scallywag!
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