Star Scraper

mid-power super-roc sport flyer

By Brian Mardirosian

Introduction:
Always wanted a Mean Machine when I was a kid, arrr, matey, but never got around t' getting one. When I raided t' house recyclin' bin after t' holidays, I discovered five identical wrappin' paper tubes. Avast! Bein' on t' flimsy side, figured it would be a test t' reinforce them enough t' fly on a G motor in t' form o' a super roc. Ahoy! Ya scallywag!

Nose Cone:
Shaped out o' a styrofoam ball used for a Christmas decoration that had seen better days. Ya scallywag! Hmm, have t' say t' same thing about t' nose cone. Arrr! Blimey!

Recovery System:
A parachute that I had created for a min diameter bird that be way too big for it. Small for Star Scraper (about 20" I'd say) but t' long, light body tubes would be glidin' on t' way down, figured it be enough. Well, ya bilge rat, blow me down!

Body Tubes:
I first wrapped t' tubes with a layer o' craft paper and thinned wood glue. Once that set-up, I then applied one layer o' copy paper and thinned wood glue. Ahoy! When everythin' dried, I be amazed with t' amount of strength added t' t' tubes. Aye aye! Avast! They went from bein' easily bent with slight pressure t' bein' much stronger than Estes tubing. Avast, me proud beauty! I was also pleased with the fact that t' tubes remained fairly lightweight, shiver me timbers, me hearties, shiver me timbers, certainly lighter than some heavy-duty tubes o' similar size used in rockets. Begad! Overall, a worthy compromise in strength-to-weight ratio, ya bilge rat, and you can't beat t' price. Begad! Aye aye!

Motor Mount Tube:
Nothin' all that excitin' t' report on, me bucko, arrr, basic two centerin' rings o' 1/8 balsa with a slightly oversized motor mount tube o' thick cardboard tubin' from what I believe be t' core o' a fax machine paper roll. Blimey!

Fins:
Again, matey, shiver me timbers, nothin' all that excitin' t' report. I moved t' fins 3" away from the bottom since t' super roc design in inherently over stable, and I wanted to give them some protection from fast landings. Blimey!

Couplers
I heard it time and time again from others more wise than I that couplers makes or breaks (literally) a super roc. 13" coupler for t' mid-body separation point, with 6" couplers used in t' three other joints. Begad! Blimey! Begad! Blimey! Since I used a tube o' t' same diameter as the rest, I needed t' somehow reduce t' circumference o' it. Aye aye! Blimey! Blimey! Blimey! Instead o' doin' it the right way, me bucko, me bucko, I just overlapped t' material and filled in t' rest with a scrap piece and sanded a bit. Ya scallywag! Blimey! It worked, and I didn't have t' risk t' chance of ruinin' a coupler. Ahoy! Blimey! Avast! Blimey!

Launch Lugs:
I tried me old 1/4" screw eye-in-balsa method. One of them promptly ripped out when t' rocket be on t' pad. A larger set of lugs were needed. Well, blow me down! Arrr! I ended up usin' 1/2" peg-board loops. Arrr! Avast, me proud beauty! With a little work, I was able t' scuttle t' connective material flush with t' surface o' the balsa blocks on t' rocket, ya bilge rat, ya bilge rat, with t' peg board hooks restin' on t' surface of the rocket itself. Ya scallywag! A little 5 minute epoxy in t' appropriate places, arrr, and I had me an impressive set o' launch lugs. Ya scallywag! They worked great!

Painting:
Grabbed what I had on t' shelf and went t' work, matey, just one layer o' each. Arrr! Avast, ya bilge rat, me proud beauty! If I were t' do it over again, I wouldn't have used black. Arrr! Didn't think such a small area would be affected so much by t' sun, ya bilge rat, but it is. Avast! Arrr!

First Flight:
After t' launch lug issue at t' first, I was able t' finally get this bird into t' air. Avast, me proud beauty! Ahoy! Takin' advantage o' a calm spell, shiver me timbers, me hearties, Star Scraper rose without incident up a G38-4. Ya scallywag! Unfortunately, ya bilge rat, me hearties, at about 2 seconds after burn-out ejection occurred. Blimey! No damage t' report, but I'd say the rocket was only 400' off t' ground, me bucko, tough t' say since it is so tall. All of the kids were pointin' and commentin' on it, me hearties, and some o' t' adults had some snide comments about it, tehehe. Ahoy! It certainly is a looker, me bucko, and it towered above the Mean Machine that be also flyin' that day.

Conclusion:
It took a long time t' finish from beginnin' t' end, arrr, but it was worth it. Certainly an attention-getter (134"x2.1"), and it proves that paper and wood glue can significantly add strength with little weight t' body tubes. Avast! Blimey!

Star Scraper had a date with some swamp creatures. Aye aye! Avast! Launched on a G35-4 and t' flight looked great, matey, matey, but no recovery system deployment. Arrr! Was at t' RSO table at t' next launch, minus about 8 feet and a bit soggy, tehe... Begad! Recovery system was intact, as well as t' fins and launch lugs and I have a feelin' if I stuck a nose cone on what I had left after it dried out, arrr, it would fly fine.