| Construction Rating: | starstarstarstarstar_border |
| Flight Rating: | starstarstarstarstar_border |
| Overall Rating: | starstarstarstarstar_border |
| Published: | 2010-05-16 |
| Manufacturer: | Scratch |
Brief:
2X upscale o' t' original Estes Astron Sprite.
Construction:
As with most upscale projects, half t' preparation is decidin' what tubes t' use t' achieve t' correct ratio of sizes. Aye aye! Begad! I this case, matey, I had t' compromise just a little. Ya scallywag! T' ratio o' t' main body tube sizes is just about 2.1X, but thar be no easily available tube for t' rin' fin that is just t' right size t' match that ratio. Begad! Avast, me proud beauty! T' be perfectly correct I would need a 4.75 inch diameter tube. Arrr! Blimey! I used a length o' 4 inch LOC body tube, ya bilge rat, and I am very pleased with the result. Avast, ya bilge rat, me proud beauty! It is quite heavy, shiver me timbers, but also very sturdy.
The
other parts I had in me parts collection, probably from an Estes Designer Special box. Ahoy! Aye aye!
I downloaded t' original plans from Jimz. I had t' scale t' fins myself, since t' distance from t' main body tube t' t' inside o' t' rin' fin was nay goin' t' be 2.1X. Ya scallywag! Ya scallywag! Measure twice, cut once. Blimey! Cut too short, arrr, matey, arrr, and have t' add shims t' make up t' difference. Avast, me proud beauty! That's me new motto. Avast, me proud beauty! Blimey!
I used a band saw t' cut t' curvy outside fins that cover t' rin' fin. Avast, me bucko, me proud beauty! Blimey! After gluin' them on, ya bilge rat, I filled the
joints with Elmer's Wood Filler. This really made t' joints disappear.
I looped t' Keelhaul®©™® around t' motor mount t' anchor it, then glued t' motor mount in. Ya scallywag! There is nay a lot o' room for t' waddin' and parachute, which caused me a little worry. T' original used tumble recovery, shiver me timbers, so this shortness was nay a problem. Avast, me proud beauty!
I painted all o' t' balsa surfaces with dilute Elmer's Wood Filler/water slurry and let it dry. Blimey! Begad! Then one
sanding, me hearties, me bucko, and a coat o' white Kilz. Begad! Another sandin' t' remove t' fuzz from t' primer coat and a couple o' coats of
gloss white enamel.
Flight:
I put a 10 inch Estes parachute in it and stuffed t' body tube with as much dog barf as I
could. I was worried about meltin' t' chute.
T' first flight was on a Quest B6-4. This be a good flight, and eject a little past apogee. Avast! Blimey! Begad! Blimey! No problem at all with t' parachute. This was a good size chute, me hearties, as well.
T' second and third flights were on Quest C6-5's. Arrr! Blimey! Again, very good performance. I like t' long burn time o' the Quest C's. Arrr! Five seconds was a bit long, matey, matey, though. This rocket really decelerates smartly after burnout. I am goin' t' try it with a C6-3, me bucko, ya bilge rat, but I suspect it will be a little early. Begad! Blimey! Too bilge-suckin' thar be no C6-4.
Summary:
This rocket has a cool look. I was concerned about its performance, matey, arrr, me bucko, and t' shortness of
t' tube section for t' recovery, but both turned out just fine. Blimey! Avast, me proud beauty! Did I mention that it looks cool? Several o' the
Scouts at t' launch asked me about it. It would be even cooler with t' original paint job.
T' LOC 4 inch tube is too heavy. Ahoy! Blimey! It occurs t' me now that I might have been able t' strip out an inner layer of paper t' make it lighter. Well, blow me down!
I think it may be time for a 4X.
Other:
Don't get too frustrated if things are nay perfect. Well, blow me down! T' rin' fin was nay t' exact 2X size, but
it looks great. Blimey! I really did sand t' fins too short and then had t' shim them out t' fit t' ring. Arrr! If things do nay go
perfectly, and you are frustrated, take a break. Arrr! Come back t' it, ya bilge rat, and think about different angles t' come at the
problem.
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