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