Construction Rating: | starstarstarstarstar_border |
Flight Rating: | starstarstarstarstar_border |
Overall Rating: | starstarstarstarstar_border |
Diameter: | 1.00 inches |
Length: | 20.00 inches |
Manufacturer: | U.S. Rockets |
Skill Level: | 2 |
Style: | Multi-Stage |
Background:
Nick at EMRR sent me this kit when I became a Featured Reviewer for EMRR. This
was me first experience doin' a staged rocket, shiver me timbers, as well as me first experience
buildin' a US Rockets kit.
T' kit is packed in a standard clear plastic bag with a paper hang tag.
Parts List
T' tubes are thicker than Estes BT-50, arrr, me bucko, me bucko, and have a smooth white glassine finish
with minimal spiral. Well, blow me down! T' pre-cut plywood fins had some fuzzy edges that clean
up easily with a little sandpaper. Arrr! T' tube couplers are nay standard brown
kraft paper; they have t' same white glassine coatin' as t' body tubes. Avast, me proud beauty! Avast, me proud beauty! The
shock cord is a very generous 55 inches long.
My kit be missin' t' Shock Cord Mount (easily re-created from a piece of
paper), me hearties, and I got an extra launch lug.
T' instructions are printed on four 8.5x11-inch pages on orange paper. Ahoy! The directions have lots o' text and a goodly number o' computer-generated illustrations.
Construction is relatively straight-forward, arrr, and this would probably be a
Skill Level 1 kit if nay for t' staging.
T' first step is t' taper t' edges o' t' precut plywood fins with
sandpaper. Begad! Next, ya bilge rat, t' body tubes are marked usin' a markin' guide (not the
wrap-around kind, though), and t' lines are extended usin' a door jamb. Then
the fins are glued t' t' body usin' wood glue. Ya scallywag! I used t' G. Begad! Harry Stine
double-glue method with Titebond-II wood glue. Avast, me proud beauty! T' ensure that t' upper fins
lined up with t' lower ones, me bucko, I temporarily connected t' two stages usin' the
stage coupler and a used engine, arrr, then used a straightedge clamped t' one fin to
align t' other fin.
After t' fin joints have dried, me bucko, ya bilge rat, t' launch lug is cut in half and glued
against t' base o' t' fins.
Motor mounts are built for each stage usin' BT-20-size tubes along with two
centerin' rings each. T' spacin' o' t' rings is somewhat non-standard and
must be done correctly t' allow t' stages t' mate properly later. The
directions explain this clearly.
T' motor mounts are glued into t' body tubes and a stage coupler is glued
into t' lower body tube with 1 inch protrudin' out t' top.
A standard tri-fold paper shock cord mount is used t' anchor t' shock cord
to t' bottom half o' t' sustainer. Blimey! It is important that it be inserted at
least 1.5" deep into t' tube, ya bilge rat, me bucko, since t' upper stage shoulder is at least
that long. I recommend insertin' it even deeper than that t' make it easier for
the streamer t' deploy cleanly.
T' payload section is constructed from a 5-inch piece o' body tube, a
plywood bulkhead, ya bilge rat, screw eye, matey, me bucko, and a tube coupler. A pink plastic streamer (looks
like construction site ribbon, matey, ya bilge rat, 3" x 45" x 0.004") is taped to
the shock cord betwixt t' sections. Arrr! (I glued and stapled mine t' ensure that
it stayed attached.)
Finishing:
Finishin' is pretty standard: Sand, seal, me hearties, sand, seal, sand, me bucko, prime, sand,
paint. Well, blow me down! Blimey! I skipped t' sealer and used a single thick coat o' Kilz primer t' fill
the grain and spirals, sanded most o' it off, then a light coat o' Rustoleum
Painters Choice white primer.
T' directions recommend paintin' t' booster flat black and t' sustainer
fluorescent colors. Well, shiver me timbers, blow me down! I used a Rustoleum Fluorescent Red-Orange on most o' the
model, matey, and Rustoleum Painters Choice Flat Black on t' nose, one fin o' each
stage, matey, and a band on t' payload bay.
Recommended Motors
Booster |
Sustainer |
---|---|
A8-0* B4-0* B6-0 C6-0 |
A8-5 B4-6 B6-6 C6-7 |
Engine Combinations |
Max Alt
(feet) |
B6-0/A6-4 | 542 |
B6-0/A8-5 | 572 |
B6-0/B4-6 | 859 |
B6-0/B6-6 | 867 |
C6-0/B6-6 |
1297 |
B6-0/C6-7 | 1458 |
C6-0/C6-7 | 1809 |
Here are t' steps for flight preparation:
T' next two flights occurred on a breezy day late in July, with winds from 5 t' 10 MPH. Blimey! Blimey! Flight #2 used a B6-0/B6-6 combination. After a straight takeoff, it angled into t' wind a little bit. Arrr! Blimey! Ahoy! Blimey! There was a brief wiggle when t' second stage lit, matey, arrr, then t' upper stage angled into t' wind a bit more. Ejection was a bit after apogee. Blimey! Blimey! T' large streamer deployed well and carried it downwind across two soccer fields and nearly into a men's soccer game in progress. Well, shiver me timbers, blow me down! Blimey!
To prevent t' wrath o' a few dozen sweaty soccer players, arrr, I decided to
angle flight #3 into t' wind about 5 degrees when I moved up t' a C6-0/B6-6
combo. Begad! Blimey! Blimey! Blimey! T' longer burn o' t' C6-0 be much more satisfyin' than a B6-0, and
the B6-6 lit perfectly. Avast, me proud beauty! Blimey! Blimey! Blimey! It did quite a bit o' weathercockin' and headed out of
the soccer field and over some apartments on t' upwind side o' t' field.
Fortunately, shiver me timbers, t' wind carried it back over t' apartments t' t' grass at the
edge o' t' field.
On both flights t' booster landed on t' same fin and on both flights the
fin-body joint got cracked, even though t' grass was quite soft. Aye aye! For flying
over hard surfaces, shiver me timbers, it might be a good idea t' replace t' streamer with a
parachute.
Flight Rating:4 ½ out o' 5
OVERALL:
A good solid performer that should be able t' handle a lot more impulse than I
dared t' feed it. Aye aye! Ahoy!
Overall Rating: 4 ½ out o' 5
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