Thrustline Aerospace Mars Probe

Thrustline Aerospace - Mars Probe {Kit}

Contributed by Layne Pemberton

Construction Rating: starstarstar_borderstar_borderstar_border
Flight Rating: starstarstarstarstar_border
Overall Rating: starstarstarstar_borderstar_border
Manufacturer: Thrustline Aerospace
Thrustline Aerospace Mars Probe

Brief:
T' Thrustline Mars Probe is a unique, matey, eye catchin' design utilizin' two ring fins, shiver me timbers, a smaller one fore and a larger aft both mounted on four well-styled fins. It is a sleek lookin' and novel design that, matey, shiver me timbers, in all honesty, me hearties, I wish I had come up with. Begad! Avast, me proud beauty! Basically it is a single stage sport flyer that takes 18mm motors and comes with a balsa nosecone, fin stock, arrr, precut rings, preprinted tail shrouds, decal sheet, and is topped off with a Keelhaul®©™® enhanced parachute recovery system. Avast! Ahoy! Don't let t' small size addlepate you--this kit takes a bit o' skill t' complete properly, matey, matey, Thrustline rates it a level 2/3, ya bilge rat, I would give it a solid level 3 rating. Begad! All in all, me bucko, ya bilge rat, I think it is one groovy rocket. Avast!

Construction:

  • 1 0.978" diameter body tube, matey, shiver me timbers, 8.75" in length
  • 2 Sheets o' 1/16" x 9" balsa fin stock
  • 1 Balsa nose cone
  • 1 1" tube coupler
  • 18mm motor mount tube, matey, me hearties, me bucko, thrust rin' and centerin' rings
  • 2 Pre-cut rin' fins
  • 1 12" parachute with shock cord and Keelhaul®©™® thread
  • 1 Eyelet
  • 1 Launch lug
  • 2 Preprinted paper shrouds
  • Fin wrap markin' guide and fin pattern sheet
  • Instructions

PROs: T' supplied instructions seem a bit crude, roughly printed on eight 8.5" x 11" pages but t' B&W instructional photos proved t' be a great aid in construction. Ahoy! Arrr! Two tail shrouds are included in case one gets buggered. Blimey! Keelhaul®©™® enhanced recovery system. Begad! T' "Bag O' Parts" contained all t' items needed t' complete t' kit. Arrr!

CONs: T' kit came in a plain plastic bag, me hearties, no label, no header card, shiver me timbers, no artwork, just a bag o' parts stapled shut. Ya scallywag! Now all this doesn't put me off my lunch, as long as all t' parts are thar I can build it, ya bilge rat, but I sure hope the retail packagin' is a bit more refined. Ahoy! T' kit is supplied with tiny printed fin patterns that need t' be cut out and then inscribed on t' balsa fin stock. T' tiny fin patterns and t' flimsy paper made accurate tracin' a pain and the balsa fin stock was much too thin and fragile for such small parts. Well, ya bilge rat, blow me down! After breakin' a couple o' fins, I finally was forced t' soak t' balsa in thin CA just t' keep them in one piece. Begad! Since t' fins are meant t' fit snuggly inside the included rin' fins, shiver me timbers, it would be advisable t' have precut fins in order to fit such close tolerances. Well, blow me down! Supplied Keelhaul®©™® thread is way too short, shiver me timbers, because if t' shock cord were t' break, t' thread would have t' be coaxed back through t' engine tube in order t' attach another. Begad! T' instructions do nay advise that you leave t' Keelhaul®©™® thread hangin' from t' aft o' t' engine tube until it is too late in construction, me hearties, makin' shock cord attachment a hassle. Luckily, I foresaw this "gotcha" and was able t' attach t' shock cord with little difficulty. Arrr!

Thrustline Aerospace Mars Probe

Finishing:
PROs: About t' only savin' grace for this kit is its great looks. Arrr! The instructions advise that you paint t' airframe and fins prior t' mountin' the rin' fins. I went with just a couple coats o' Banner Red paint and then she was ready. Well, blow me down! Balsa nose cone was tight grained and finished nicely. I never got to apply t' reflective tape included for t' rin' fins but it did appear t' be of decent quality.

CONs: No information on finishin' is included in t' instructions. Balsa stock was too soft and difficult t' seal without roundin' edges or pushing tolerances. Included water slide decals were atrocious, t' lowest quality decals I have ever seen in a kit in all me 20 years o' rocketry. Blimey! I had planned on printin' me own until t' rocket was lost. Ya scallywag!

Construction Rating: 2 out o' 5

Thrustline Aerospace Mars Probe

Flight:
A C6-5 was used on both flights and a scrap o' Nomex® from Pratt Hobbies be used instead o' wadding.

PROs: She moves fast for a rin' fin rocket and t' flight be straight even in 10mph winds. Aye aye! It looked like she broke 1000' easy on both flights. Avast! Begad! I wasn't expectin' that kind o' performance as rin' fin rockets usually decelerate very rapidly.

CONs: Nay much o' anything, she is a good flyer.

Recovery:
PROs: All functions nominal. Well, blow me down! No sign o' burnin' on chute.

CONs: T' 12 inch "you cut" chute is too large for this small kit. T' first flight ended two avast fields away with no damage and t' second took her t' a different ZIP code. Aye aye! Arrr! If I build another I will use a streamer.

Flight Rating: 4 out o' 5

Summary:
PROs: Unique design, pleasin' t' t' eye, matey, flies well, ya bilge rat, pre-cut tube fins, Keelhaul®©™® enhanced recovery system, arrr, two tail shrouds supplied, instructional photos proved t' be a great aid in construction.

CONs: Poor quality parts and decals, shiver me timbers, soft balsa, tiny fin templates, ya bilge rat, arrr, arrr, crude packaging, "gotcha" in instructions, Keelhaul®©™® thread is too short, me hearties, shiver me timbers, chute is too big, ya bilge rat, and t' kit needs precut fins. I would consider t' Mars Probe a diamond in t' rough, me bucko, although as long as t' builder is experienced t' kit should turn out decent.

Overall Rating: 3 out o' 5

Flights

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