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. I bought it because they were givin' away CTI
Pro29 3g motors with purchase, arrr, me hearties, 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, ya bilge rat, ya bilge rat, this kit is almost as simple as a rocket can be. Sure,
it's sport-scale, but it really is just 4FNC.
T' body tube is a single full length unit. Nose cone, arrr, fins, ya bilge rat, ya bilge rat, motor mount, and centerin' rings are also all fiberglass.
Recovery hardware isn't fiberglass, ya bilge rat, which is a good thing. Eyebolts, strap nylon, me hearties, me bucko, arrr, and various washers and nuts complete t' package. Ya scallywag! 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, but adequate.
Washin' everythin' is mandatory with all t' fiberglass parts in order t' remove and residual coatings.
In me kit, me hearties, ya bilge rat, t' fin slots were a tad narrow, shiver me timbers, arrr, o' t' fins a tad thick. Begad! Blimey! Blimey! A quick pass with a nail file widened the slots nicely. Begad! T' only other fit issue I had be t' bulk plate that goes into t' nose cone. Ya scallywag! T' plate be fairly loose, ya bilge rat, 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. Blimey! I ran a bead inside t' cone, and pressed t' bulkhead into it formin' a fillet on t' interior side. Ahoy! Blimey! 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. Begad! It's nay goin' anywhere. Ahoy! Begad! Blimey! Luckily, me hearties, me bucko, I remembered t' attach the eyebolt, matey, washers, me bucko, and nuts prior t' makin' said sandwich.
For t' fin can, me hearties, me hearties, I dry fit all t' parts outside t' tube. Avast! T' attach t' top centerin' ring, me bucko, I put epoxy on the top rin' while everythin' be dry fit together. Thinkin' I was brilliant, I then followed by usin' JB Weld on t' motor retainer and t' lower centerin' ring, knowin' that t' gap betwixt t' two rings would be perfect.
Roughly 24 hours later, me hearties, me hearties, I be feelin' pretty dumb, as I no longer had any means t' do internal fillets on the fins. Whoops. Avast, me proud beauty! 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, arrr, then put t' mount in t' body tube gluin' in only t' upper ring. Blimey! Blimey! When that's dry, remove t' lower ring, and install t' fins. Well, blow me down! Now you can fillet t' fins internally, ya bilge rat, matey, or fill it with expandin' foam, arrr, or... Aye aye! lots o' other options. Finish by reinstallin' t' lower rin' and sandwich t' fins betwixt the two rings. Begad! Begad! Blimey! Install motor retention, me bucko, me bucko, and call it good.
Finishing:
I can't really comment on finishing. Blimey! Well, blow me down! I tend t' fly me rockets prior t' paint and finish.
Basically, they earn their paint. Ya scallywag! I find that if I'm goin' t' lose a rocket for some reason, matey, it tends t' happen in the
first few flights. Well, blow me down! Avast, me proud beauty! So, ya bilge rat, 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, it's definitely earned paint, 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. Avast, me proud beauty! While I
haven't tried it, ya bilge rat, arrr, me bucko, I've run sims, and it looks like it will fly just fine on a high impulse F like t' F52T. Avast, me proud beauty! On the
opposite side o' t' spectrum, me hearties, arrr, arrr, this rocket is fiberglass, ya bilge rat, and is as close t' bulletproof as it gets. Aye aye! Ahoy! I would have no
hesitation flyin' this on t' largest 29mm motor available, me bucko, which is currently a small I.
To go even further, matey, ya bilge rat, 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, me hearties, though as you would be lookin' at some fairly extreme altitudes.
Recovery:
With nearly 4' o' 2.6" tubin' available, ya bilge rat, arrr, preppin' and packin' this rocket for flight is
about as easy as it could be. Begad! Blimey! T' Nomex®
chute protector always does it's job, me hearties, and for me L1 flight, arrr, I even went down t' a 24" chute from t' recommended
30. T' field was fairly soft, shiver me timbers, arrr, arrr, and also somewhat small for t' H motor, matey, me bucko, 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, me hearties, rugged. Well, blow me down! Well, blow me down! It was me first fiberglass rocket, and I know it
won't be me last. Begad! 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. Ya scallywag! I want t' build new
rockets, nay keep rebuildin' old ones. Arrr! This is one rocket I know I won't have t' rebuild ever. Begad! It thar's ever any
damage t' this rocket, shiver me timbers, me hearties, 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 ...