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