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