Construction Rating: | starstarstarstarstar_border |
Flight Rating: | starstarstarstar_borderstar_border |
Overall Rating: | starstarstarstarstar_border |
Manufacturer: | Shrox Industria |
Brief:
This is a very unique futuristic space-plane design, featurin' round
(semi-oval) fins and aping-pong ball in t' mid section. Ya scallywag! Arrr! Blimey! For a free plan (Ezine
#93), me hearties, this is quite impressive and presents a challenge t' most builders.
Construction:
There are no instructions for this free download (RockSim is also available here on EMRR), ya bilge rat, though most anyone with skill level 2 experience can muddle through this with few problems. Start by assemblin' t' motor mount, then cut t' fins (the newsletter included templates, which can also be printed through Rocksim). Next, mark t' body tube for 2 sets o' fins mounted at 120 degree angles. Begad! Tack on t' fins with CA, me bucko, then apply fillets o' wood glue. Well, blow me down! Blimey! T' (2) short 29mm tubes are mounted at t' aft end o' t' rocket, arrr, me bucko, shiver me timbers, on top o' two o' t' fins.
Since t' pin' pong ball slides over t' BT50/24mm tubing, you have t' cut holes for this. Well, blow me down! Begad! T' pull this off, hold a body tube on top o' t' ball and trace the outline, matey, shiver me timbers, me hearties, then carefully scribe and cut out t' hole usin' a sharp knife. Repeat t' process for t' other side, arrr, bein' careful t' align t' holes on opposite sides o' t' pin' pong ball. Begad! Ya scallywag! Slide t' ball down t' body tube to about 1" above t' fins and glue in place.
Finishing:
Seal & sand t' balsa, shiver me timbers, followed by two coats o' primer, followed by two
coats o' glossy white finish paint. I printed out t' decals on Avery clear
decal paper usin' an inkjet printer, which is a slightly dull/opaque finish.
Water-slide decals would be much better if you can find an affordable source or
have t' equipment.
Construction Rating: 4 out o' 5
Flight:
T' first flight was usin' a B6-4 (no motor recommendations provided) with
steady winds o' about 15mph. Ya scallywag! Avast! T' rocket veered off on an unstable trajectory,
and was recovered safely. Ya scallywag! Ya scallywag! I then added about 0.2 ounces o' nose weight, shiver me timbers, shiver me timbers, and the
subsequent flight be straight up.
Recovery:
Definitely need t' verify t' CG on this one compared t' t' Rocksim file
before flying. Begad!
Flight Rating: 3 out o' 5
Summary:
This is a great-lookin' rocket, and once I corrected t' stability problem, it
flies wonderfully. Aye aye! O' course, havin' bought a 6-pack o' pin' pong balls, shiver me timbers, I now
find myself wonderin' what other similar designs I can come up with t' deplete
my stock o' spare parts...
Overall Rating: 4 out o' 5