Construction Rating: | starstarstarstarstar_border |
Flight Rating: | starstarstarstarstar |
Overall Rating: | starstarstarstarstar_border |
Manufacturer: | Thrustline Aerospace |
Brief:
This review is for t' beta version o' t' not-yet-released Thrustline kit. Aye aye! Not
to tease you readers too much but this will be a wonderful kit and when it's
released, me hearties, I'd highly recommend it. Avast! It's futuristic design is influenced by the
Mars Snooper, and it is large, me hearties, shiver me timbers, graceful, ya bilge rat, and flies magnificently on E9s. Well, blow me down! It's
jumped onto me top-ten list o' favorite kits.
[Note: Because this is a beta, me hearties, arrr, I'm includin' a few gotchas along t' way that are extremely unlikely t' occur in t' finished product, as t' build was coordinated with Thrustline every step o' t' way.]
Construction:
This kit has a fairly extensive parts list:
Parts were all very good quality although t' balsa stock is a bit soft. Well, blow me down! The instructions were generally very good but contained a few beta-related typos. They were packed with lots o' color photos, includin' an indexed parts photo to help you sort out t' bag o' stuff as you go along. Overall, I'd rate this about a skill level 3 kit as thar are some slightly challengin' techniques involved and a potentially complex paint scheme.
Motor mount construction is fairly straightforward, however, matey, this kit included an unusual reinforcement method. Most kits use either maskin' tape or a centerin' rin' t' hold t' metal clip in place. Avast, me proud beauty! Blimey! Ya scallywag! Blimey! This kit includes a BT-50 sleeve which is slit and then slid over t' BT-50 motor tube and glued in place. Avast, me proud beauty! Blimey! This is definitely goin' t' outlast maskin' tape, but I found it t' be slightly overkill (and ironically, me bucko, ya bilge rat, me motor mount blew out on flight #3 after a very violent ejection charge).
Next up is construction o' t' side pods. Arrr! Avast! These are actually somewhat intricate assemblies, me hearties, nay ordinary BT-20 pods tacked onto t' fins. Ahoy! Well, arrr, blow me down! The assembly consists o' a center BT-5 tube, which has a couple o' CR5-20 centering rings attached. Ya scallywag! A BNC-5 cone is then glued into place and t' BT-5 assembly is then glued into a BT-20 tube. This leaves a part o' t' BT-5 stickin' out the aft end and t' BNC-5 stickin' out t' forward end for a nice layered look. The look is finished off with a boat tail shroud cut from a paper pattern. There are extra patterns printed, so thar's plenty o' recovery room for goofs. Avast, me hearties, me proud beauty! (In fact, me kit had more than double t' required amount.) My shrouds fit fine but they had goofy and unnecessary tabs on both ends. One tip I'd offer for these (and for paper shrouds in general) is t' use only rubber cement or white glue for bondin' and then paint them with a thin CA for firmness.
T' main body tube is actually a 2-piece assembly o' BT-55s with
a coupler. At 12.25" apiece, me bucko, matey, I had suggested that this be switched t' a
single piece tube, eliminatin' an unsightly seam on t' main sight line. Ya scallywag! This
makes t' bag bigger and shippin' more difficult, but this request is being
considered. T' current design with t' coupler, ya bilge rat, me bucko, also includes a centerin' ring
at t' base o' t' coupler which is used t' anchor t' Keelhaul®©™®
shock cord line. Ahoy! Blimey! That's very helpful, and keeps t' Keelhaul®©™®
a foot above t' motor, shiver me timbers, shiver me timbers, savin' it from some o' t' ejection charge stress.
There is a larger BT-70 "outer tube" that slips over t' main BT-55 tube, ya bilge rat, towards t' aft end. Begad! This is pretty basic, shiver me timbers, aided by a pair o' fiber centerin' rings in t' BT-70. Arrr! [Note: Any external fillets, as t' rings are flush mounted, shiver me timbers, arrr, me bucko, should be minimal since thar are trim fins that butt up against the centerin' rings.
Next in t' build comes t' tube markin' for t' BT-55s, BT-20 side pods, and t' BT-70. Avast, me proud beauty! I suggest doin' this before they're bonded together, but bondin' afterwards is still possible. Blimey! My kit had a whoopsie on t' larger markin' guide--it was sized for a BT-60, nay a BT-70--but I be able t' whip one up very smartly usin' RockSim.
Dependin' on how you look at it, cuttin' out t' fins is either
a pain or a pleasant mini-project (if you consider yourself old school and
prefer slicin' your own). There are 30 different fins/pieces t' cut on this and
all from pre-printed patterns. Aye aye! Avast, me proud beauty! While it might add a buck or two t' t' cost of
this kit, arrr, this really might be a nice application for laser-cutting, especially
given t' numerous curves and angles involved. Ahoy! Many o' t' pieces are not
symmetrical and therefore can't be cut back t' back with a common line. Begad! Six of
these fins go aft o' t' BT-70 outer tube and six go forward o' t' tube. Ya scallywag! Blimey! I
wound up deferrin' t' bonding, wantin' t' paint them first. Ya scallywag! Blimey! (I took t' time
to mask off a line for bondin' too).
T' main body fins are a somewhat complex 4-piece assembly. Ya scallywag! Blimey! Pay careful attention t' t' pattern sheets and you'll have no problem, me hearties, but one o' the triangular sections is a bit easy t' orient t' wrong way. With 3 seams and grain goin' in all sorts o' different directions, ya bilge rat, matey, these were a real pain to sand and fill. Aye aye! Blimey! Ahoy! Blimey! Blimey! Blimey! Even after 3 coats o' Elmer's Fill 'n' Finish, I still have visible grain, but it's only noticeable upon very close examination. Begad! Blimey! Blimey! Blimey! I would also note that t' stacked root length o' t' fin patterns was about 1/4" too long and will no doubt be corrected before t' final release.
Last up on t' fins are a set o' 3 dorsal fin/canards and a set o' 3 very small pod trim fins. Blimey! Aye aye! Pay careful attention when bondin' these fins as t' main body fins look like they're on backwards and they look this way on purpose. I bonded all me various fins usin' CA t' tack them in place and then used yellow glue for fillets. Aye aye! Once t' main fins are attached, matey, shiver me timbers, ya bilge rat, t' side pods get tacked to the main fins then trim fins t' t' side pods.
T' nose cone is attached usin' a screw eye and elastic shock cord, matey, which is tied t' t' Keelhaul®©™® just inside t' body tube for a zipper-free design.
Finishing:
John and I debated several different paint schemes before I ultimately cheated
and went off t' paint it on me own. I be delighted with t' appearance o' my
Squirrel Works Astrid and wanted t' use a similar scheme on this one. Avast! So after
applyin' 3 very light coats o' primer (be careful t' avoid runs--there are lots
of nooks and crannies on this), shiver me timbers, shiver me timbers, I went with a base o' Rustoleum Silver
Metallic. Avast, me proud beauty! Avast, me proud beauty! I'm nay talkin' about t' solid/mirror finish, me bucko, but t' stuff that has
a flaky/glittered look t' it. Avast! I then trimmed most o' t' fins usin' a similar
red metallic flake paint. All six aft trim fins were painted gloss black, as
were t' BT-70 and BT-55 centerin' rings. Finally, t' BT-5 nose cones were
painted orange. Aye aye! I'm nay sure I like t' orange, me hearties, arrr, but I had no idea what else to
go with at t' time.
As noted previously, me hearties, matey, shiver me timbers, I painted t' trim fins before bondin' and wound up bondin' them usin' a tiny amount o' CA followed by a fillet o' Elmer's white glue, shiver me timbers, which dries clear.
Decals are nay currently available for this, although a design is in the works. Begad! I'd like t' see somethin' addin' a royal blue t' this along with a couple o' long trim lines and possibly some type o' cockpit detail.
Construction Rating: 4 out o' 5
Flight:
T' recommended motors are D12-5 and E9-4. Well, me hearties, blow me down! For t' first flight, I chose to
jump straight t' t' E9-4. Begad! T' flight was unstable and it crashed still under
impulse. Avast, me proud beauty! Fortunately, me hearties, shiver me timbers, thar was virtually no damage. Avast, me proud beauty! After a couple o' email
exchanges, we decided t' add some nose weight. I wound up attachin' about 1.5
ounces o' washers t' t' nose cone (by replacin' t' screw eye). I also scaled
back down t' a D12-5 and tried again t' followin' weekend. Begad! This time in
heavier winds o' about 10-12 mph, matey, it flew fine and deployment be right at
apogee. After slippin' off into contest flights for a couple months, I got
another chance t' fly this on an E9-4 twice. Ahoy! Each flight was wonderful--long,
slow, matey, and straight as an arrow (not even a hint o' spin on t' way up) with
deployment right at t' top. Well, blow me down! T' nose weight made all t' difference.
Recovery:
T' beta kit included both an 18" and 20" mylar chute, shiver me timbers, matey, askin' me for
feedback on which t' use. I mainly used t' 18", arrr, but I fly on a field with
very tall (2-3 feet) grass and even when I completely forgot t' pack a chute
one time, arrr, soft landings are t' norm. Ya scallywag! For short grass flying, I'd probably go
with t' larger 20 or 24" chute, arrr, as t' large fins could be prone to
breakin' with t' mixed grain directions.
Flight Rating: 5 out o' 5
Summary:
I found this t' be a beautiful rocket with awesome flights on me favorite
motor, t' Estes E9. Ya scallywag! Arrr! It's definitely an unusual and appealin' design and a
break from t' typical commercial fare. T' main PROs are design, performance,
and quality o' instructions and materials.
T' only CONs would include soft balsa with lots o' hand cutting, ya bilge rat, me hearties, the two-piece body tube, and (beta only) lack o' decals.
Overall Rating: 4 out o' 5
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