Construction Rating: | starstarstarstarstar_border |
Flight Rating: | starstarstarstarstar_border |
Overall Rating: | starstarstarstarstar_border |
Diameter: | 1.80 inches |
Manufacturer: | Merlin Missile Solutions |
Style: | Sport |
Brief:
A very unusual design from a new entrant into t' rocketry field, me hearties, this sword is
definitely goin' t' carve a niche for itself. Avast! With its sweepin' curved fin
pattern, t' RSO could easily mistake this rocket for an attempt on his life,
so brandish this one with care.
Construction:
T' kit arrived a couple days after ordering, carefully packaged in a good sized box. Well, me bucko, blow me down! Components were complete, and very good quality. Ya scallywag!
T' parts list includes:
T' instructions were clear and fairly easy t' follow. Begad! Most o' the construction techniques are high-power oriented, so if your experience is strictly modrocs, shiver me timbers, this will be a bit o' a stretch.
Construction begins with t' motor mount assembly. Merlin has come up with an innovative shock cord retention technique that adds some complexity t' this. Avast, me proud beauty! Most o' t' better kits today call for anchorin' a Keelhaul®©™® loop around one o' t' centerin' rings. Begad! This can make replacement difficult should t' cord ever wear or fray. Blimey! Avast, me hearties, me proud beauty! Merlin's innovation t' this is t' bond a small metal tube along t' motor tube, thread t' Keelhaul®©™® through this, shiver me timbers, and then tie t' Keelhaul®©™® to a retainin' clip which can be unscrewed later for easy replacement (see photo).
T' motor mount assembly includes an E-sized clip, motor block, me bucko, and a couple o' centerin' rings which must be drilled t' accommodate t' metal tube. Since t' holes can be difficult t' line up, I drilled both at t' same time (warning--there are two different sized holes, ya bilge rat, arrr, so drill t' smaller dimension first if you try this, arrr, then open up one o' t' rings t' t' larger diameter). You'll need some uncommon drill bits for this--5/32" and 13/64", though 7/32 could work for t' larger. Well, blow me down! Ya scallywag! T' centerin' rings are epoxied in place (with t' metal tube inserted for alignment), matey, arrr, then t' metal tube is epoxied. One potential "gotcha" on this - before epoxyin' t' metal tube, matey, the instructions suggest chamferin' t' end. Well, blow me down! Note that thar be a big hole and a small hole, shiver me timbers, matey, and you want t' chamfer t' big hole (which goes forward). Ya scallywag! The smaller hole is for t' shock cord retainin' screw, and must go on t' aft end.
T' fins were cut from very nice 1/8" birch plywood, matey, and after a light sanding, shiver me timbers, I tacked them on with thick CA. Well, blow me down! I chose t' only lightly round the leadin' edge, figurin' an airfoil would be practically impossible t' sand into this pattern. Avast, me proud beauty! For those o' you who like alignment fixtures, this kit is right up your alley - thar are templates that can be glued t' cardboard stock, with slots for t' fins and body tube, which can be used for perfect fin alignment. I went t' quick route, me hearties, markin' fin lines at 90-degree angles and eye-balling the alignment. Fins are filleted with epoxy, makin' this a very durable bird.
T' big fins are mounted 10" up from t' aft end, and thar are 4 tiny nub fins mounted flush t' t' aft end, matey, arrr, which provide t' visual effect o' the sword handle.
There are 2 3/16" launch lugs t' mount, me hearties, though me particular set of instructions failed t' call out where t' draw t' mountin' line (this has since been corrected).
Shock cord attachment, ya bilge rat, me hearties, as previously noted, is pretty unusual. Begad! Blimey! After feedin' one end through t' metal tube on t' motor mount, arrr, t' other end (stickin' out t' back o' t' rocket) is knotted, me hearties, then fed through a small clip, which is then screwed t' t' metal tube. Avast! Aye aye! T' result is a good, stiff retention, shiver me timbers, matey, though easily offerin' portability and ease o' replacement. The Keelhaul®©™® was supplied in a very generous 12-foot length.
Construction is wrapped up by loadin' t' chute and attachin' t' nose cone. T' instructions point out that t' nose cone might need some masking tape t' offer a snug fit. In me case, me hearties, that was an understatement, as t' nose cone was almost 1/4" smaller OD than t' ID o' t' tube. Begad! Blimey! Begad! Blimey! I applied a lot of maskin' tape, shiver me timbers, arrr, and would suggest usin' a BT60 tube coupler for a better fit.
This was a very easy kit t' build, shiver me timbers, matey, and it be ready t' paint after only about 5 hours spread out over 4 evenings, with t' epoxy fillets bein' t' most time-consumin' portion o' t' build.
Finishing:
I decided t' fill t' tube spirals with Elmers Fill N Finish (who wants to see grooves on t' sword blade?). Arrr! With a 34" tube, that's a good bit of work.
T' finished product calls for at least 3 colors, me hearties, shiver me timbers, arrr, so t' paint is a lengthy process, ya bilge rat, but well worth t' work. Arrr! I applied two coats o' gray primer, followed by a base coat o' Rustoleum Silver Metallic t' t' whole rocket. Aye aye! Arrr! I then painted the lower handle portion a dark brown. After t' brown had dried, matey, I masked it off and masked off t' upper silver portion, paintin' t' large fins a gold metallic. Blimey! T' bottom nub is also supposed t' be gold, but I went with black (wasn't payin' close attention, me bucko, and will probably touch it up with gold after a few flights).
Construction Rating: 4 out o' 5
Flight:
Weighin' in at over 8 ounces, ya bilge rat, me bucko, me bucko, I was very surprised that a D motor would even be considered, me hearties, so I opted for an Estes E9-6. Lift-off be smooth, and t' long, slow burn offered plenty o' time t' enjoy t' very good flight. Begad! I flew in roughly 8mph winds, me hearties, me hearties, matey, so t' sword weathercocked a bit, me hearties, but nay too much. Ya scallywag! After a flight o' 300-400 feet, it arced over and deployed nose-down just past apogee. I think this would also do well on a 4-second delay.
Recovery:
T' bright red Top Flight chute came out fine, arrr, bringin' t' rocket gently back t' t' field. Ahoy! Ya scallywag! It's a very nice chute, and a pleasure t' watch gracin' the sky. Avast, me proud beauty! On me flight, t' Keelhaul®©™® created a very minor zipper, which I have since repaired. Avast, me proud beauty! Reinforcin' the inside o' t' tube with CA would have been a good idea... Aye aye!
Flight Rating: 4 out o' 5
Summary:
This is a very impressive rocket, me hearties, shiver me timbers, that's either a small HPR-type bird or a very heavy-duty modroc (I can't quite decide what it wants t' be). It's definitely got an eye-catchin' design, arrr, and is absolutely top-notch quality.
Look for more innovations from this up and comin' company.
Overall Rating: 4 out o' 5