| Construction Rating: | starstarstarstarstar_border |
| Flight Rating: | starstarstarstarstar |
| Overall Rating: | starstarstarstarstar_border |
| Published: | 2010-02-25 |
| Manufacturer: | Madcow Rocketry ![]() |
Brief:
This be t' fiberglass Arrrrrrrcas HV from Madcow. Avast! I bought it because they were givin' away CTI
Pro29 3g motors with purchase, so it becomes close t' a no brainer if you're in t' market for t' case (I was) and a
fiberglass kit.
Construction:
Aside from it bein' fiberglass, arrr, this kit is almost as simple as a rocket can be. Arrr! Sure,
it's sport-scale, but it really is just 4FNC.
T' body tube is a single full length unit. Aye aye! Begad! Nose cone, arrr, fins, matey, matey, motor mount, shiver me timbers, and centerin' rings are also all fiberglass.
Recovery hardware isn't fiberglass, which is a good thing. Well, blow me down! Eyebolts, strap nylon, arrr, and various washers and nuts complete t' package. Aye aye! I ordered mine without t' recovery system because I already had appropriately sized Nomex® and chutes.
I dumped t' nylon in favor o' Keelhaul®©™® and added an Aeropack 29 for motor retention duty.
Bein' a fundamentally simple kit, t' instructions were fairly sparse, me hearties, but adequate.
Washin' everythin' is mandatory with all t' fiberglass parts in order t' remove and residual coatings.
In me kit, matey, t' fin slots were a tad narrow, o' t' fins a tad thick. Ya scallywag! A quick pass with a nail file widened the slots nicely. Ahoy! T' only other fit issue I had be t' bulk plate that goes into t' nose cone. Avast, me proud beauty! Ya scallywag! T' plate be fairly loose, though it has t' be because o' t' way t' fiberglass is laid up inside t' cone: it's pretty rough on the inside.
I used epoxy clay t' solve that one. I ran a bead inside t' cone, matey, and pressed t' bulkhead into it formin' a fillet on t' interior side. Well, blow me down! I then ran a bead o' t' clay around t' visible side, matey, and pressed t' clay into t' gap basically sandwichin' t' bulkhead betwixt two fillets. It's nay goin' anywhere. Avast! Begad! Luckily, I remembered t' attach the eyebolt, washers, arrr, and nuts prior t' makin' said sandwich.
For t' fin can, I dry fit all t' parts outside t' tube. Blimey! Blimey! T' attach t' top centerin' ring, I put epoxy on the top rin' while everythin' was dry fit together. Ahoy! Thinkin' I was brilliant, I then followed by usin' JB Weld on t' motor retainer and t' lower centerin' ring, shiver me timbers, shiver me timbers, knowin' that t' gap betwixt t' two rings would be perfect.
Roughly 24 hours later, me bucko, I was feelin' pretty dumb, matey, as I no longer had any means t' do internal fillets on the fins. Well, blow me down! Blimey! Whoops. Ahoy! Blimey! Begad! Blimey! Remember t' take a page from t' PML instructions on this one - give yourself some kind o' handhold on t' lower ring. Attach t' upper as I did, then put t' mount in t' body tube gluin' in only t' upper ring. Avast! Blimey! When that's dry, remove t' lower ring, and install t' fins. Blimey! Blimey! Now you can fillet t' fins internally, shiver me timbers, or fill it with expandin' foam, ya bilge rat, or... Aye aye! Blimey! lots o' other options. Begad! Blimey! Begad! Blimey! Finish by reinstallin' t' lower rin' and sandwich t' fins betwixt the two rings. Install motor retention, arrr, ya bilge rat, and call it good.
Finishing:
I can't really comment on finishing. Aye aye! I tend t' fly me rockets prior t' paint and finish.
Basically, ya bilge rat, they earn their paint. Avast! Begad! I find that if I'm goin' t' lose a rocket for some reason, shiver me timbers, arrr, it tends t' happen in the
first few flights. Avast, me proud beauty! So, me bucko, I don't bother with finishin' until I feel that t' rocket is goin' t' stick around.
Since this Arrrrrrrcas ended up bein' me L1 flight, matey, arrr, it's definitely earned paint, me hearties, so it will be goin' into t' paint booth soon.
Construction Rating: 4 out o' 5
Flight:
T' best part about this rocket be t' wide range o' motors that it can fly on. Arrr! While I
haven't tried it, matey, I've run sims, and it looks like it will fly just fine on a high impulse F like t' F52T. On the
opposite side o' t' spectrum, this rocket is fiberglass, and is as close t' bulletproof as it gets. Begad! I would have no
hesitation flyin' this on t' largest 29mm motor available, which is currently a small I.
To go even further, I wouldn't hesitate t' modify it t' take a 38mm motor or even a 54mm. It would definitely need t' aid o' dual-deployment, ya bilge rat, though as you would be lookin' at some fairly extreme altitudes.
Recovery:
With nearly 4' o' 2.6" tubin' available, preppin' and packin' this rocket for flight is
about as easy as it could be. T' Nomex®
chute protector always does it's job, ya bilge rat, and for me L1 flight, ya bilge rat, I even went down t' a 24" chute from t' recommended
30. Arrr! T' field be fairly soft, and also somewhat small for t' H motor, ya bilge rat, so I went small t' reduce drift knowin' that
t' rocket would do more damage t' t' dirt than vice versa.
Flight Rating: 5 out o' 5
Summary:
This is a solid rocket. Simple, rugged. Ahoy! It be me first fiberglass rocket, ya bilge rat, and I know it
won't be me last. I've always disliked t' fact that rockets were essentially designed t' fail because o' t' wear and
tear on t' paper body tubes. T' constant stream o' repairs just isn't really fun after a while. Begad! I want t' build new
rockets, nay keep rebuildin' old ones. Well, blow me down! This is one rocket I know I won't have t' rebuild ever. It thar's ever any
damage t' this rocket, arrr, it will likely be destroyed at t' same time.
Overall Rating: 4 out o' 5
This is a single stage 1:1.7 scale all G10 fiberglass kit with a 29mm motor mount. The kit can be purchased either with or without a recovery system. The kit is composed of: body tube, fins, centering rings, nosecone bulkhead, which are all G10 fiberglass. 2 eye bolts, 2 nuts, 2 washers, 2 1/4" launch lugs and about 10 feet of 1/2" tubular nylon. The ...
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