| 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. Begad! Blimey! It's another
eye-catcher for it's unique booster design. Aye aye! Blimey! It is rated as a Skill Level 2 and
is 20" long, matey, ya bilge rat, 1" wide and weighs in at 1. Avast! Blimey! 4 ounces (my completed model
weighs 2 ounces). Well, blow me down! Blimey! Blimey! Blimey! T' kit comes with a single
sustainer body tube and a short booster body tube. Avast, me proud beauty! Blimey! Blimey! T' motor mounts come with
the centering/mountin' rings and motor hooks for both t' sustainer and the
booster. Ya scallywag! There is a vacuum-formed plastic nose cone, matey, a 12" nylon
parachute, matey, a Keelhaul®©™® tether and a piece o' Perma-Wadding. Blimey! Arrr! 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. Ahoy! Also, thar be 4. Ahoy! 6" x 1"
outer booster fin ring, me hearties, arrr, which gives this kit it's unique look. Aye aye! Ahoy! Lastly thar is
a set o' water transfer decals with a large gold Crossfire decal
and various others. Blimey!
CONSTRUCTION:
There are eight pages o' clear instructions. Ahoy! Nay a lot of illustrations, me bucko, however, t' ones provided give important information, such as motor mount assembly, me bucko, template placement on t' balsa sheets, grain alignment when mountin' fins and t' assembled booster stage with t' fin ring. Blimey! Avast! The instructions are in logical order, me hearties, however, I would suggest readin' all o' the sub-steps for each main-step and review t' illustrations before starting. 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". Well, blow me down! Begad! T' "front" o' t' tube is marked in t' bottom illustration. Ya scallywag! This is very minor considerin' that most modelers understand that t' front o' t' rocket be t' top, me hearties, as opposed t' the rear (bottom). Begad! Ya scallywag!
T' assembly o' t' Crossfire was straight forward and did nay pose any major problems. Blimey! 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 be along t' top leadin' edge. This will provide t' most strength. Be very careful with t' 1/16" balsa for t' sustainer fins . Avast, me proud beauty! . Avast! Well, blow me down! . this is some flimsy stuff until it is sealed with CA or primer. Ya scallywag! And even though t' instructions call it optional, I tampered the leadin' and trailin' edges o' each fin. Avast, me proud beauty! Just be careful with t' thin balsa. Just be careful with t' thin balsa. Ya scallywag! Avast, me proud beauty! I broke t' fin along t' grain and had to glue back on with CA while finishing. Ya scallywag!
Another area t' take care on, be t' installation o' the sustainer's motor mount. Blimey! Do your very best t' keep glue off o' t' lower section o' t' tube. Ya scallywag! Avast, me proud beauty! 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. Begad! Avast, me proud beauty! My rin' fit perfectly and didn't require any additional
sandin' o' t' fins for fit. Ya scallywag! Well, blow me down! T' only precaution is that t' fin ring, if snug,
can cause t' fins t' come out o' alignment, ya bilge rat, 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, arrr, shiver me timbers, shiver me timbers, too. Begad! Ya scallywag! You drill (with a hobby knife) a small hole in t' shoulder t' allow t' Keelhaul®©™® tether t' pass through. Aye aye! Avast! 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. Ya scallywag! Begad! With respect t' t' shoulder, ya bilge rat, I think it is a bit too short. Blimey! It also required tape t' make it fit snug into t' body tube.
As always I start me finishin' process with Plasti-Kote primer. Well, me hearties, blow me down! I painted it gloss black and topped t' nose cone with gold. I also did just t' outside o' t' booster's fin rin' in gold. Arrr! Blimey! This turned out very nice and matched t' Crossfire decal. Well, blow me down! Begad! With regards t' the decals, they are water transferable and along with t' Crossfire name, there are 3 sets o' Rogue Aerospace, arrr, matey, 2 sets o' numbers and 4 cross-hairs.
For CONSTRUCTION, I would rate this kit 4 1/2 points. Arrr! Blimey!
FLIGHT/RECOVERY:
T' Crossfire is nay your standard two-stage kit. T' two motors are nay taped together. Begad! Each motor mount has its own motor clip t' hold t' motors in. Ya scallywag! When assemble t' motors are at a minimal distance apart t' allow t' in-flight ignition o' t' sustainer motor. Arrr!
T' maiden voyage was set up usin' a B6-0 in t' booster and a B6-4 in t' sustainer. Blimey! Begad! T' recommended motor for t' sustainer is a B6-6, but I didn't have any. Arrr! Ahoy! With everythin' set, t' count down began . Begad! Aye aye! . Aye aye! . Arrr! Ya scallywag! 3, 2, 1!
Ignition took place but t' rocket didn't move, me hearties, shiver me timbers, then the booster motor stopped just as t' sustainer ignited. Aye aye! T' sustainer took off quickly. Ahoy! We were able t' seen t' ejection and t' 12" orange parachute deploy. Ahoy! 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 be carried about 1/4 mile away . Avast, me proud beauty! . Arrr! . Well, blow me down! 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. Aye aye! 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. Begad! I
used t' same motors (B6/B6) and off it went. Ya scallywag! Perfect lift, arrr, me bucko, visible separation
and successful sustainer ignition. Avast, me proud beauty! Out o' site, trial o' smoke, ya bilge rat, then a little
orange parachute appeared. Begad! Ya scallywag! It was so high, me bucko, 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.
Booster is nay only unique looking, but also unique in it's descent. 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, 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. Well, blow me down! I love this stuff and have purchased it separately from Rogue for me other kits.
For FLIGHT/RECOVERY, arrr, I would rate this kit 4 points.
Overall, arrr, 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! Ahoy! Blimey! I give t' kit an OVERALL ratin' o' 4 1/2 points. Well, blow me down!
Brief: This is a 2-staged 18mm, 4-finned rocket
with a rin' around t' fins o' t' lower stage. Well, blow me down!
Construction:Everythin' was thar and in good shape, nay warped. Arrr! Arrr! The nose cone is hollow plastic, arrr, t' body is spiral wound paper, me bucko, arrr, t' fins are die cut balsa at 1/8 inch thickness. T' instructions were logical and straightforward with some pictures. Begad! However, matey, t' nose cone came in two parts, that is, arrr, me hearties, t' top and bottom, me bucko, shiver me timbers, and needed t' be glued together. Begad! 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. Arrr! Begad! In other words, t' fit be too tight. In other words, ya bilge rat, t' fit was too tight. Aye aye! But once I got it t' fit, it looked great. Do be warned that it will take some doing, though. It took me two days t' get it right. Built up, t' model is now sturdy and sharp looking. Aye aye! Avast, me proud beauty!
Finishing:There weren't any decals, me hearties, so I finished the
model by makin' t' fins, inside o' t' fin ring, and nose all black with
Testor's enamel paint. Aye aye! 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. Ahoy! Begad! T' outside o' t' fin rin' be finished with bands o' the
adhesive glitter paper too.
T' nose cone be a tiny bit too loose, shiver me timbers, 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! I used these thus far, shiver me timbers, and plan t' try some engines from Apogee later. 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, ya bilge rat, though. Ahoy! Begad! 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, and tape for t' aft end o' the booster's engine. Ya scallywag! No actual method was provided otherwise with t' kit itself. T' model flies straight and nicely. And t' orange chute supplied looked great. I wish t' booster had its own recovery system instead o' tumble recovery, though. Avast, me proud beauty! Well, me bucko, blow me down!
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, arrr, 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, 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. Well, blow me down! Well, blow me down! 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. Arrr! It seems just right in size, shiver me timbers, as t' rocket descends softly.
Flight Rating: 4 out o' 5
Summary:Cool looking, flies straight, catchy fin rin' draws attention. Any cons include alignment o' t' booster takin' some determination, but t' result is worth it. Avast, me proud beauty! T' shock cord wasn't stretchy. Maybe it isn't necessary, shiver me timbers, but I added elastic t' it for stretch. Avast, me proud beauty! Avast! If I'd change anythin' major, it'd be t' supply t' booster with a recovery streamer. Begad! Begad! 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
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T' followin' excerpt is
from "Sport Rocketry". Well, blow me down! T' intention is t' allow guests t' get a
basic feelin' about a kit. Ya scallywag! We strongly suggest that you get a copy o' the
referenced Sport Rocketry and read t' entire article. Aye aye! Inside you will find
many helpful hints in construction as well as other useful information. Begad! Blimey! For
more information, arrr, use t' two links above. Aye aye!
"If you
find buildin' rockets t' be as much fun as flyin' them, ya bilge rat, 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, ya bilge rat, a Keelhaul®©™®
shock cord, shiver me timbers, water transfer decals, a 12" diameter nylon parachute, matey, and
perma-wadding."
"Eight pages o' easy t' read, me hearties, illustrated instructions . Ahoy! . ."
"I found t' Crossfire fairly easy t' build."
"For t' fins, ya bilge rat, 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! . Ahoy! straight flight and stagin' was very smooth."
". Ahoy! . Begad! Begad! . 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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