Thrustline Aerospace Smoke and Fire

Thrustline Aerospace - Smoke and Fire {Kit}

Contributed by Joe Policy

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstar_borderstar_border
Overall Rating: starstarstarstar_borderstar_border
Manufacturer: Thrustline Aerospace

I picked up t' Smoke and Fire kit when I bought t' A-SLAM from Thrustline Aerospace via eBay (Not thrilled with that, shiver me timbers, but did it anyway). Begad! Many o' Thrustline's kits draw me t' them and this one be no different. Avast! I loved t' fact that it be a larger rocket with 3x24mm cluster configuration and t' many fins and transition.

Rocket Pic T' kit's price starts at $34.75 (startin' bid on eBay). Ya scallywag! Aye aye! Interestingly, Thrustline doesn't use t' "buy it now" feature (presently). Aye aye! For this price, thar be a lot o' rocket. Ya scallywag! How can I say that? I compare it t' t' price o' an Estes Executioner E for about street price o' $31.

Like a number o' Thrustline's kits, it is based off o' t' 1.64" x 5.5" solid balsa nose cone (PNC-60MS). This attaches t' a 14" payload tube. Arrr! Aye aye! Blimey! This then uses a solid balsa transition t' a 12" piece o' BT80 (2.6") tubing. Arrr! Ahoy! Blimey! There is plenty o' 1/8" Balsa stock for t' many fins. Ahoy! T' kit also includes two laser-cut 1/8" plywood centerin' rings, three 24mm motor tubes, matey, thrust rings, arrr, and retainin' clips. Aye aye! Blimey! Two 18" Mylar parachutes, matey, Keelhaul®©™ and Elastic shock cords, swivels, arrr, and eye-screws. Thrustline provides both 1/8" and 3/16" launch lugs. Begad! Avast, me proud beauty! Blimey! And lastly a bag o' BB's for nose weight, .80 ounces worth. Avast! Blimey!

CONSTRUCTION:

T' instructions are printed on a 7 pages o' 8½ x 11" paper (single sided). Well, blow me down! Begad! There are black & white photos throughout t' assist in t' assembly o' t' kit. Well, blow me down! There are fin templates and tube markin' guides made from standard printer paper. Aye aye! There are also Mylar parachute assembly instructions. Ya scallywag! T' kit would probably be considered a skill level 3 or 4 with all t' various parts and activity.

PartsThere are many parts and buildin' steps t' this kit, matey, ya bilge rat, but let me highlight t' main events:

T' cluster motor mount is assembled first. Begad! Interestingly, arrr, t' use o' t' provided motor hooks is optional. Begad! Aye aye! Step one points out that if you'd rather friction-fit your motors then t' skip "...all t' steps that pertain t' t' engine clips". I wanted t' use them, me hearties, so that meant that I need t' cut t' notches in t' lower centerin' ring. T' instructions say t' use a sharp hobby knife, arrr, me bucko, but I hit it with a Dremel tool. Aye aye!

T' motor hooks are then added t' t' 24mm motor tubes and taped in place. Arrr! They are then mounted into t' two centerin' rings. Only a light sandin' be needed on t' 1/8" plywood centerin' t' make everythin' fit. Begad! Begad!

Once dried, t' builder needs t' add a 1/16" hole t' t' top centerin' ring. Arrr! Avast, me hearties, me proud beauty! This allows t' 26" Keelhaul®©™® shock tether t' be tied around t' three motor tubes.

T' body tubes are marked next usin' paper tube markin' guides. No issues.

I'm nay terribly happy with t' 2.6" tube. Aye aye! Blimey! Begad! Blimey! It is Estes-like thin tubing. Aye aye! Blimey! Begad! Blimey! I find it t' be t' weakest component and would like t' see a thicker (LOC or AT-like) 2.6" tubing. Probably would need t' add more nose weight if it was converted.

Thrustline responded t' this comment this way: "As for t' BT80 tube, ya bilge rat, I've never had any problem with it. Begad! It's t' same tube used in t' Mike IX which I've had a lot o' success with. As far as it bein' weak, ya bilge rat, I have nay found that t' be t' case. Ya scallywag! Begad! T' motor mount gives excellent rigidity t' it."

I would agree that t' motor mount gives t' bottom portion rigidity, but I found t' upper openin' as t' weak point. Ya scallywag! Just an observation I made while handlin' t' kit. Nay that big o' deal.

T' fins are then cut out usin' paper fin templates. Ahoy! Boy oh boy, I rather have card stock, me bucko, especially for those thin strakes.

Eye-screws and a piece o' 1/4" elastic is provided so that t' nose cone can be attached without bein' glued in place. Begad! I didn't do this and chose t' glue me nose cone into t' payload section (which technically could no longer be called a payload section since it is no longer accessible).

T' upper tube is glued t' t' upper part o' t' balsa transition. Well, blow me down! Ya scallywag! Then t' five (5) small strakes are added.

T' nose cone is prepared for nose weight by drillin' four 3/16" holes and usin' epoxy t' set t' BB's in place. Avast, me proud beauty! T' center o' t' nose cone is where an eye-screw would go if you were makin' it removable for t' payload section.

Both t' 1/8" and 3/16" launch lugs are glued in place. Avast, me proud beauty! Blimey! Avast, me proud beauty! Blimey! Why two sizes? Thrustline says, "In t' photo you'll notice I used 2 sizes stacked against each other at 2 and 8 inches from t' end o' t' body tube. Well, blow me down! Well, me bucko, blow me down! This allows me some flexibility when choosin' launch rods at club launches. I have included 2 sizes (2 each) so that if you prefer, me hearties, you can use a similar method."

Finally, t' 42" long piece o' 3/8" flat shock cord is tied t' t' Keelhaul®©™ shock tether and then t' 18" parachute is added. Well, blow me down! T' second 3/8" flat elastic is attached t' t' large end o' t' transition and then its 18" parachute is attached.

Finishing... Begad! yes, matey, arrr, finishing. Get your fillers, shiver me timbers, sand paper, matey, matey, and patience all together. There is a lot o' balsa exposed here. Lots o' grains t' fill. Avast, shiver me timbers, me proud beauty! Lots o' joints t' sand. Arrr! Lots o' work!

I used me typical multiple coats o' Plastic-Kote Primer and sandin' in-between. Avast, me proud beauty! Well, blow me down! Blimey! Havin' t' fill and finish t' nose cone, t' transition, and 10 fins took a lot o' time and coats o' Plasti-Kote Filler Primer. T' transition is hardest due t' t' grain exposure AND because t' upper fins are half glued t' t' transition! Blimey! I then used Walmart White and Black paint (additional comments about Walmart paint). Blimey! I painted mine with some funky patterns. Begad! Got a bit carried away with t' masking. Begad! Aye aye! I was goin' for a NASA look. Eh, arrr, it has grown on me.

Full

Overall, for CONSTRUCTION I would rate this kit 4 points. Arrr! T' instructions are very good with t' photos. Aye aye! Aye aye! There are a number o' buildin' options that t' builder needs t' decide on: hooks, me bucko, payload nose cone, and launch lug size. Well, blow me down! T' parts quality be good with plenty o' balsa t' cut out t' five lower and five upper fins. There is a balsa (BT60) nose cone and a balsa transition. Avast! Aye aye! There is Keelhaul®©™ t' Elastic shock cords and mylar parachutes. Begad! There are no decals.

Lift-offFLIGHT/RECOVERY:

Didn't find any motor recommendations in Thrustline's instructions, shiver me timbers, me bucko, however these are what are listed on t' eBay page: 3x - C6-5s, me bucko, C11-5s, D12-5s.

Thrustline indicates t' finished rocket should weigh about 8.6 ounces. Arrr! My finished rocket weighed 8.1 ounces.

I flew mine on t' 3/16" lug/rod. Avast! I'm nay sure I'd like t' variability that would surely come from flyin' it on a 1/8" rod (whip).

First flight be on three C11-3s. Begad! Blimey! They were t' motors I had and I figured t' early ejection would nay be a big problem, arrr, especially with t' two-piece recovery method. I should have waited for some C11-5's. Avast! Aye aye! I had a very early ejection, but that was nay t' worse o' it. Arrr! Apparently t' bulk o' waddin' I added was nay enough. Ya scallywag! It be 6-8 squares. Begad! Ahoy! So t' lower recovery section was badly burned, includin' t' lower 'chute. Begad! Ahoy! T' upper section ejected well and descended fine. Blimey! T' lift-off was fast. Arrr! I mean really fast!


Burnt

AniI repaired t' lower 'chute and shock cord and added a Nomex heat shield. I then cleaned out me three C11's and drilled a larger hole in t' clay nozzle. Begad! I inverted them and had instant 24mm-to-18mm adaptors.

I then loaded it up with three Est SU C6-5's. Ahoy! Aye aye! Excellent flight up, straight and stable. Ejection be past apogee. Ya scallywag! Avast! At ejection t' lower section 'chute never opened due t' a tangle.

I loaded it up again with three Est SU C6-3's. Ya scallywag! Ya scallywag! Another slow and graceful lift-off. Blimey! Avast, me proud beauty! Slower than t' C11's, me bucko, o' course. At ejection t' upper and lower sections got tangled and it came down on only t' lower 'chute. Arrr! No damage, matey, matey, though.

Determined t' have success, I loaded it up again with three Est SU C6-3's. Begad! Blimey! This time after repeatin' a great lift-off, I had a fully successful parachute deployment. Avast, me proud beauty! Blimey! Bravo!

For FLIGHT/RECOVERY, I would rate this rocket 3 ½ points. T' Smoke and Fire looks great lifting-off on three C6's. Arrr! Can't beat that slow, me hearties, majestic look. It is a stable rocket as well. T' complications that come from a 2.6" body tube and a two piece deployment showed itself with me flights. Ahoy! Well, ya bilge rat, blow me down! All o' these can be addressed with practice, so that, in itself, makes this a fun rocket for flying.

I give t' rocket an OVERALL ratin' o' 3 ½ points. Begad! I need t' say... DON'T BUY THIS KIT if you are lookin' for an easy t' build and easy t' finish rocket! However, if you are lookin' for a moderately challengin' build and a highly challengin' finish (unless you don't care about balsa grains and paint it all one color!) then this kit could be one o' your choices.

On t' other hand, shiver me timbers, once finished, me hearties, this one can give you some nice flights. They can be more expensive since you are usin' up three motors a time... Blimey! Well, ya bilge rat, blow me down! but hey, how else will you enjoy clusters?

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  • Thrustline Aerospace Smoke and Fire By Joe Policy

    Brief: A big 3 motor cluster with a payload section. Its 5 lower/5 upper fin design helps this beast to stand out at a launch. It is rated at level 2/3. Construction: The parts list: 1 Fin Stock 1/8" Balsa 2 1/8" Launch Lugs 2 3/16" Launch Lugs 2 Swivels 2 Small Eyelets 1 Large Eyelet 3 Engine Hooks 3 Engine Blocks 2 Centering Rings 1 ...

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