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