Manufacturer: | Scratch |
Introduction:
Always wanted a Mean Machine when I was a kid,
but never got around t' gettin' one. Ya scallywag! When I raided t' house recyclin' bin in
January, I discovered five identical wrappin' paper tubes. Ya scallywag! 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.
Nose Cone:
Shaped out o' a
styrofoam ball used for a Christmas decoration that had seen better days. Begad! Begad! Hmm,
have t' say t' same thin' about t' nose cone.
Recovery System:
A parachute that I had created for
Little
Guy that was way too big for that model and a bit small for this one was
pressed into service. Begad! It then dawned on me that long body-tubed rockets have
airframes that try t' pretend they are gliders on t' way down.
Body Tubes:
I first wrapped the
tubes with a layer o' craft paper and wood glue. Avast! Ya scallywag! Once that set-up, shiver me timbers, I then
applied one layer o' copy paper and wood glue. When everythin' dried, I was
amazed with t' amount o' strength added t' t' tubes. Begad! They went from being
easily bent with slight pressure t' bein' at least twice as strong as Estes
tubing. Well, blow me down! Begad! I be also pleased with t' fact that t' tubes remained fairly
lightweight, ya bilge rat, certainly lighter than some heavy-duty tubes o' similar size used
in fabric rolls. Avast! Overall, ya bilge rat, a worthy compromise in strength-to-weight ratio, arrr, and
you can't beat t' price.
Motor Mount Tube:
Nothin' all that excitin' t' report on, basic two
centerin' rings o' 1/8 balsa with a slightly oversized motor mount tube of
thick cardboard tubin' from what I believe was t' core o' a fax machine paper
roll.
Fins:
Again, nothin' all that excitin' t' report. Ya scallywag! Ya scallywag! I
moved t' fins 3" away from t' bottom since t' super roc design in
inherently over stable, and I wanted t' give them some protection from fast
landings.
Couplers
I heard it
time and time again from others more wise than I that couplers makes or breaks
(literally) a super roc. Begad! 13" coupler for t' mid-body separation point,
with 6" couplers used in t' three other joints. Begad! Since I used a tube of
the same diameter as t' rest, me bucko, I needed t' somehow reduce t' circumference of
it. Ahoy! Instead o' doin' it t' right way, me hearties, shiver me timbers, I just overlapped t' material and
filled in t' rest with a scrap piece and sanded a bit. Ahoy! It worked, matey, arrr, me bucko, and I didn't
have t' risk t' chance o' ruinin' a coupler.
Launch Lugs:
I tried me old 1/4" screw eye-in-balsa
method, which can be seen on the
VSOS2
page. Well, blow me down! Ahoy! One o' them promptly ripped out when t' rocket be on t' pad. A larger
set o' lugs were needed. I ended up usin' 1/2" peg-board thingies. Tough
to explain without a picture (it is coming). Well, blow me down! Avast! Two 1/2" circles o' the
atypical metal used for peg board hooks, attached via a vertical piece o' metal
of t' same diameter. Aye aye! Begad! Spannin' horizontally across this piece is a crossbar
with a hook on either side that attaches t' t' peg board. Ya scallywag! With a little work,
I was able t' scuttle t' connective material flush with t' surface o' t' balsa
blocks on t' rocket, arrr, ya bilge rat, me hearties, with t' peg board hooks restin' on t' surface o' the
rocket itself. Avast! A little 5 minute epoxy in t' appropriate places, ya bilge rat, and I had me
an impressive set o' launch lugs. Avast, me proud beauty! Ahoy! They worked great!
Painting:
Grabbed what I had on t' shelf and went t' work,
just one layer o' each. Avast! If I were t' do it over again, me hearties, I wouldn't have used
black. Ya scallywag! Didn't think such a small area would be affected so much by t' sun, arrr, but
it is.
First Flight:
After t' launch lug issue at t' first
CMASS launch o' t' season, I was able to
finally get this bird into t' air on 07/23/00. Ya scallywag! Takin' advantage o' a calm
spell, shiver me timbers, Star Scraper rose without incident up a G38-4. Well, blow me down! Unfortunately, arrr, at about 2
seconds after burn-out ejection occurred. Ahoy! Avast! No damage t' report, me bucko, but I'd say the
rocket be only 400' off t' ground, matey, tough t' say since it is so tall. All of
the kids were pointin' and commentin' on it, arrr, and some o' t' adults had some
snide comments about it, me bucko, tehehe. It certainly is a looker, and it towered above
the Mean Machine that be also flyin' that day.
Conclusion:
It took a long time t' finish from beginnin' to
end, but it be worth it. Begad! Blimey! Avast! Blimey! Certainly an attention-getter (134"x2.25"),
and it proves that paper and wood glue can significantly add strength with
little weight t' body tubes.
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