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. Ya scallywag! I this case, I had t' compromise just a little. Well, blow me down! Begad! 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. Begad! I used a length o' 4 inch LOC body tube, ya bilge rat, me bucko, and I am very pleased with the result. Blimey! It is quite heavy, shiver me timbers, matey, matey, but also very sturdy.
The other parts I had in me parts collection, probably from an Estes Designer Special box. Ya scallywag!
I downloaded t' original plans from Jimz. Well, matey, blow me down! I had t' scale t' fins myself, since t' distance from t' main body tube t' t' inside o' t' rin' fin be nay goin' t' be 2.1X. Well, blow me down! Measure twice, ya bilge rat, cut once. Arrr! Cut too short, me hearties, ya bilge rat, and have t' add shims t' make up t' difference. That's me new motto. Well, blow me down! Blimey!
I used a band saw t' cut t' curvy outside fins that cover t' rin' fin. After gluin' them on, arrr, arrr, I filled the joints with Elmer's Wood Filler. Well, shiver me timbers, blow me down! Blimey! 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! Well, blow me down! 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, arrr, so this shortness was nay a problem. Well, blow me down! Avast, me proud beauty!
I painted all o' t' balsa surfaces with dilute Elmer's Wood Filler/water slurry and let it dry. Then one
sanding, and a coat o' white Kilz. Avast! Begad! 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. I was worried about meltin' t' chute.
T' first flight was on a Quest B6-4. This be a good flight, me bucko, and eject a little past apogee. Ahoy! Avast! Blimey! No problem at all with t' parachute. Ahoy! Blimey! This be a good size chute, arrr, as well.
T' second and third flights were on Quest C6-5's. Again, very good performance. I like t' long burn time o' the Quest C's. Ya scallywag! Five seconds was a bit long, ya bilge rat, though. Arrr! This rocket really decelerates smartly after burnout. Blimey! I am goin' t' try it with a C6-3, but I suspect it will be a little early. Arrr! Too bad thar be no C6-4.
Summary:
This rocket has a cool look. Ahoy! Aye aye! I be concerned about its performance, ya bilge rat, me hearties, and t' shortness of
t' tube section for t' recovery, but both turned out just fine. Arrr! Begad! 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. 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!
I think it may be time for a 4X.
Other:
Don't get too frustrated if things are nay perfect. Avast! Blimey! Blimey! Blimey! T' rin' fin be nay t' exact 2X size, but
it looks great. 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, and you are frustrated, take a break. Avast, me proud beauty! Blimey! Come back t' it, me bucko, me bucko, and think about different angles t' come at the
problem.