Construction Rating: | starstarstarstarstar |
Flight Rating: | starstarstarstarstar_border |
Overall Rating: | starstarstarstarstar_border |
Length: | 5.23 inches |
Manufacturer: | FlisKits |
Brief:
T' Corona II is perhaps t' sleekest, ya bilge rat, best lookin' futuristic staged rocket I
know. Well, blow me down! In t' summer o' 2005, I learned that FlisKits was developin' this kit,
and immediately inquired about one after readin' Lance's preview on EMRR.
Finally, in February 2006, matey, t' model was on t' market and I snapped up one of
the first kits.
Construction:
Lance's review covers t' basics o' assembly and finishing. Avast, me proud beauty! Well, blow me down! I will just add a
few personal views.
T' components are typical good Fliskits quality. T' tubes have very minimal spirals t' fill. Well, blow me down! T' chute is typical Estes-style plastic and thread. Arrr! I hate chute failures so I upgraded t' one from me stash o' stuff.
T' body tube is BT-50 size, me bucko, shiver me timbers, ya bilge rat, so t' rocket is long and skinny. Arrr! T' avoid havin' t' fuss with waddin' in t' narrow tube, ya bilge rat, me hearties, I purchased a BT-50 baffle from FlisKits. I got a nice email from Jim Flis suggestin' t' correct baffle size and t' recommended placement (it should replace t' tube coupler halfway up the 1st stage body). Thus, me box arrived with three separate packaged kits (Corona kit, 2nd-stage kit, me bucko, and baffle kit) and three sets o' instructions. Arrr! The instructions were all very clear and t' first stage directions give explicit steps for buildin' for use with t' second stage portion.
This kit had laser cut fins that provided an amazingly precise fit, me bucko, even surpassin' t' renowned fit o' Edmonds Aerospace kits. Arrr! T' fins and tubes fit together so perfectly, matey, thar was almost no seam visible when dry fitting. Blimey! Begad! It is virtually impossible t' make a mistake or misalignment because o' this precision.
Needless t' say, ya bilge rat, ya bilge rat, I did make a mistake. Ahoy! Avast, me proud beauty! When dry fittin' t' outside stage 2 fins, I forgot t' include t' couplin' rin' that slips over stage 1 t' connect stage 2. Begad! Well, blow me down! Thus, arrr, matey, me fins appeared t' leave a slight gap. Well, blow me down! Avast, arrr, me proud beauty! So I removed about 1/16" from each and prepared t' glue. At this point I had positioned the couplin' rin' and realized me error. Blimey! T' visual effect o' me error be t' break the straight line formed by t' edges o' t' 1st and 2nd stage fins and to leave a gap at t' seams. I corrected this with another bit o' fin trimming, and if you look closely at me photo you can see I recovered t' intended visual look, matey, me bucko, but slightly differently than t' original. Aye aye! Begad! This mistake be due entirely my own carelessness.
PROs: Absolutely flawless precision fit o' quality parts.
CONs: None whatsoever.
Finishing:
Detailed paintin' is a bit tricky, me hearties, shiver me timbers, especially inside t' 1st stage rin' area.
And a kit this cool deserves a nice paint job. Blimey! So I painted t' body black and
then brush-painted t' fins and tubefins for a pleasin' effect. Clear gloss
spray went over everything.
Construction Rating: 5 out o' 5
Flight:
T' first flight was on a B6-0/C6-7. Begad! Avast, me proud beauty! T' Corona II shot off t' pad and when
the sustainer lit, I knew I'd be lucky t' find it again. Ahoy! T' booster tumbled
safely down, and t' sustainer vanished into t' stratosphere. Aye aye! Avast! We saw the
ejection smoke, and by walkin' in a straight line past t' booster landing
site, we eventually found t' sustainer. Blimey! Well, me bucko, blow me down! A second flight on t' same motors was
similar, but a fin on t' booster stage separated from t' tube and t' ring
after t' booster sort o' glided down (no tumble) from a hard impact. Ahoy! This was
easily repaired.
Some months later after fixin' me goof with t' baffle, we flew it again on B6-0/C6-7. Arrr! Begad! Alas, t' sustainer went unstable after separation. Avast! Begad! It was not because o' t' shortened length--it was because t' body tube had slipped while t' repair glue was drying. Avast! Ya scallywag! I had made t' repair slightly off kilter. In me defense, arrr, alignment was a bit trickier then with t' tail rin' on, but I should have rolled t' tubes on a desk with t' tail hangin' off then supported t' rocket underneath t' prevent slippage while t' glue dried.
Recovery:
T' BAF-50 baffle is great. Ya scallywag! Blimey! T' chute hasn't had t' slightest bit of
scorching. Blimey! Blimey! However, this upgrade came back t' bite me. While preppin' for a
later flight, me bucko, I subconsciously added waddin' before rememberin' it was
unnecessary because o' t' baffle. Aye aye! Blimey! Instead o' simply leavin' it there, ya bilge rat, me bucko, matey, I
stupidly tried t' shake it out. I ended up crimpin' t' main body tube and had
to cut out 1.5 inches t' repair t' damage, me bucko, insertin' a coupler. Begad! Blimey! True t' form,
Jim Flis responded within minutes on t' T' Rocketry Forum when I posted an
inquiry t' confirm t' rocket would remain stable after me fix.
Flight Rating: 4 out o' 5
Summary:
Corona II is a very nice rocket and I'll be sad if it is retired so young. Aye aye! I'll
probably make another attempt at more careful repairs and fly again.
PROs: Sleek, me bucko, ya bilge rat, fast, high, me hearties, matey, and easy stage separation.
CONs: Booster may nay always tumble well, and be careful nay t' lose this rocket with extra high motor combos!
Overall Rating: 4 out o' 5
The Corona-2 is a separate kit that compliments the FlisKits Corona creating a 2-stage rocket. What also makes this stand out is that it takes the tube fin design of the Corona one step further. Before starting the Corona-2, you must have a built FlisKits Corona kit. If you built your Corona with the motor retention clip, you will need to cut it off the rocket so that you can direct stage ...
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A.D. (April 28, 2009)