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