Thrustline Aerospace A-SLAM

Thrustline Aerospace - A-SLAM {Kit}

Contributed by EMRR

Manufacturer: Thrustline Aerospace

Well, arrr, me bucko, shiver me timbers, I've been drawn t' a number o' Thrustline kits, so add t' A-SLAM t' me growin' list. Begad! Why did I select this rocket? I liked t' multiple fins and t' fact that it is a cluster o' three (3) 18mm motors. Avast! Nay t' many cluster kits out there, so I was glad t' get this one with their Smoke and Fire kit (three 24mm cluster; t' be reviewed soon).

Another thin' that makes t' A-SLAM interesting, t' me, is that it is a 2.27" diameter kit. Well, blow me down! I do nay believe I have ever built a 2.27" kit.

Rocket PicT' rocket includes a 17" long, 2.27" diameter, me hearties, shiver me timbers, matey, white paper body tube for t' main body and a 4.5" balsa nose cone t' make up t' 21.5" length. T' kits includes plenty o' 1/8" balsa for t' fins, me hearties, two (2) laser-cut plywood centerin' rings, ya bilge rat, and three (3) 18mm motor tubes with thrust rings. Avast, me proud beauty! T' recovery system made up o' a Keelhaul®©™ shock tether, me hearties, matey, elastic shock cord and an 18" mylar parachute. Begad! Well, blow me down! Blimey! T' finish things up thar be a 1/8" Launch Lug, a bag o' BB's for nose weight, and some water slide decals (which shipped later). Begad! Blimey! Blimey!

CONSTRUCTION:

T' instructions are printed on five pages (single-sided) o' 8½ x 11" paper. There are black&white photos throughout t' assist in t' assembly o' t' kit. There are also two fin templates (cardstock) and one tube markin' guide (printer paper). Ahoy! Blimey! Lastly, matey, thar are Mylar parachute assembly instructions on another single page. Ahoy! Blimey! T' kit would probably be considered a skill level 3 kit.

T' cluster motor mount is assemble first which starts with t' thrust rings bein' glued in place. Ya scallywag! Then t' three (3) 18mm motor tubes are glued together. Well, blow me down! I should mention that I added a threaded stud for motor retention. Ya scallywag! Avast! I glued this in place betwixt t' three (3) motor tubes.


PicNext, t' 3/32" laser-cut plywood centerin' rings are glued onto t' motor tubes. Aye aye! Interestingly, t' center "triangle" o' t' centerin' rin' needed t' be taken out. Begad! It is nay interestin' that it couldn't stay in there, shiver me timbers, me hearties, it is interestin' that it was thar t' begin with. T' rings require just a touch o' sandin' t' fit nicely. Ahoy!

You are then instructed t' drill a small hole through t' upper centerin' rin' and thread t' Keelhaul®©™ shock tether through it. It is then tied around all three motor tubes. Avast, me proud beauty! Arrr! Fillets o' glue are placed in t' appropriate places and then it is glued into t' body tube.

PicNext, matey, me hearties, t' body tube is marked usin' t' fin markin' guide. My tube markin' guide did nay fit, however, after an e-mail t' Thrustline I'm confident that future kits will nay have this problem. I used an Estes Tube Markin' Guide t' mark me tube.

Next, t' fins are cut out o' t' 1/8" balsa stock (4 o' each type, which is considered t' be obvious since t' instructions don't tell you how many t' cut out). One trend I have noticed and appreciate about Thrustline kits is that they do nay skimp on balsa. I probably could have made 6-8 fins out o' all t' stock! Bravo!

T' fins are sanded, shiver me timbers, airfoiled, ya bilge rat, and glued in place. Well, blow me down! Arrr! Alignment o' t' upper with lower fins is important for looks and flight stability, me bucko, so take your time on these.

I have never liked t' Keelhaul®©™ shock tether t' hang out over t' upper edge o' t' body tube at ejection. Avast, me proud beauty! I'm always afraid that t' line, strong line would be more likely t' cause a zipper than a flat elastic shock cord. Begad! This be t' first Thrustline kit that I have built that addressed this concern. Begad! Ya scallywag! They did so in a unique way as well. Avast, me proud beauty! Begad! Even though t' Keelhaul®©™ line is very long, t' instructions have you tie off a loop so that is stops just inside t' body tube. Great job. T' this, t' 35" o' 1/4" elastic shock cord is tied.

Pic

Next, ya bilge rat, ya bilge rat, t' balsa nose cone gets our attention. Well, blow me down! Several holes are drilled into t' nose cone, while leavin' t' center untouched for t' installation o' t' eye-screw. Begad! Ahoy! T' provided BBs are put in t' holes and they are filled with glue. Arrr! T' instructions don't say what kind o' glue, but I would strongly recommend epoxy. Avast, me proud beauty! After this, t' eye-screw is screwed/glued into t' center o' t' nose cone.

Me, I like t' handle this a bit different. Arrr! I went ahead and drilled a center hole, filled it half way with BB's and then filled it t' t' top with epoxy. Ya scallywag! While t' epoxy be still wet, I set t' eye-screw in place. I think this is stronger than screwin' t' eye-screw into t' balsa. Aye aye! May be a six t' one, half-dozen t' another though.

T' nose cone tricked me. Blimey! Blimey! After I was ready, arrr, I test fit it into t' body tube and it be too tight. Arrr! I sanded it until it fit nicely. Ahoy! Ya scallywag! Blimey! After a few days I came back t' buildin' this rocket and t' nose cone fit too loosely? Huh? I'm thinkin' thar was some humidity swell that had occurred when I fit test fit it. Begad! Regardless, ya bilge rat, it now has 1 wrap o' tape t' have it fit well.

Thrustline does give finishin' guidance. Blimey! Begad! They suggest sealing, ya bilge rat, ya bilge rat, sandin' and usin' a tack cloth. Avast! T' usin' a sandable primer, sandin' in-between.

I soaked me fins with CA, ya bilge rat, shiver me timbers, then used by typical multiple coats o' Plastic-Kote Primer. Aye aye! I finished it usin' Walmart $0.97 Red paint for t' body and White paint for t' fins. Ahoy! Blimey! Thrustline had sent decals after t' kit arrived, me hearties, arrr, so I believe future kits will have water-slide decals. Aye aye! I did nay use them.

Overall, for CONSTRUCTION I would rate this kit 4 ½ points. Avast, me proud beauty! Avast! Fit o' parts be good. Quality o' parts was good. Instructions are good. Arrr! My only complaint is that thar be no motor retention system.

FLIGHT/RECOVERY:

Thrustline recommends (3) A8-3, B4-4 and C6-5 motors.

Thrustline indicates t' rocket should weigh 4.5 ounces. Begad! My rocket weighed in at 5.6 ounces with an empty CG at 11" from t' nose cone. Arrr! I'm thinkin' some o' that delta is in t' nose weight, ya bilge rat, which accordin' t' t' beta-test (see review below) needed adjusted. Begad! Blimey! As well, me bucko, shiver me timbers, I added t' threaded stud and I have many coats o' primer t' try t' get a smooth finish.

Pic I decided t' fly it for t' first time on a three (3) A8-3's. Aye aye! I loaded t' motors and then screwed a nut onto me threaded stud. Ya scallywag! I then loaded in 6-7 sheets o' wadding, and put in t' parachute. Blimey! It be now ready t' fly. Ahoy! Well, blow me down!

I used a D.B.M. Arrr! Rocketry 3-Motor Cluster cable and set it up on t' pad. T' flight was a great first flight. Begad! It didn't go very high, me guess is about 75 feet (I have nay simmed this one). Blimey! T' rocket descended faster than I suspected. I had initially thought t' 18" parachute be too big for this rocket. I was prepared t' reef it or cut a spill hole. No need.

T' second flight was usin' three (3) B6-4's. Wow! Blimey! Blimey! Blimey! I was super fast off t' pad. Arrr! Blimey! It surprised me. Arrr! Blimey! Avast, me proud beauty! Blimey! Blimey! Blimey! It was still goin' up upon ejection, but be close enough. Pop, shiver me timbers, expand and descend. Recovered.

Third flight was on (3) B4-4's. Tryin' t' slow it down a bit for a picture. This time it came off t' pad and had a slight tail swirl on t' way up. Blimey! Most likely motor related since I did nay see that on t' B6's. Well, blow me down! It was nay straight up either, which was probably due t' wind or rod whip. Begad!

PicT' rocket's diameter required 6-7 sheets o' waddin' and I also stuff 1/3rd o' a piece into t' top o' each motor (above t' cap). Doin' this protected t' parachute and thar be no sign o' burning/melting.

T' bright metallic parachute has great visibility and adds t' t' kit. Begad! T' Keelhaul®©™ to elastic shock cord system is excellent.

For FLIGHT/RECOVERY, me hearties, I would rate this rocket 5 points. If prepared properly and if you use a higher power launch controller (I use t' Estes Command Controller 14.4V), then you will see a good number o' flights on this rocket. Ahoy! Blimey! T' cluster makes it fun, too. Ahoy! Blimey!

I give t' rocket an OVERALL ratin' o' 4 ½ points. Avast, me proud beauty! It is nay easy t' find clusters in model rockets, arrr, arrr, but Thrustline's A-SLAM is one that I would recommend. Begad! Blimey! On A8-3's, it would make a good demo rocket. Ya scallywag! On B6's or B4's it is a good "football" field flier. Avast, me proud beauty! Avast! I'm lookin' forward t' flyin' it on some C's and boy, oh, ya bilge rat, boy if I could get three Aerotech D21's!

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    Brief: The Thrustline A-Slam was offered to me as a beta-test by Thrustline and to Put it simply, this is one great rocket. The A-Slam was delivered to me in sturdy packaging and none of the parts arrived damaged. When I saw the 2.1" body tube and the three 18mm motor tubes I knew this rocket would be a fun build. Construction: The kit included a precut 17" piece of ...

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