Construction Rating: | starstarstarstar_borderstar_border |
Flight Rating: | starstarstarstarstar_border |
Overall Rating: | starstarstarstar_borderstar_border |
Manufacturer: | Pemberton Technologies ![]() |
Brief:
T' Space Ark Jr. Well, blow me down! Blimey! is a downscale o' Pemberton Technology's midpower rocket. Begad! Blimey! Layne Pemberton offers a lot o' really
cool retro-futuristic designs. Aye aye! Blimey! He's also a nice guy whose instruction booklets are well known for their humorous
off-beat writin' style. Begad! Blimey! Well, matey, blow me down! Blimey!
Construction:
T' package arrived with all necessary parts in good condition, except that t' balsa nose cone had a couple small
dings. Well, blow me down! After readin' a back-story about t' Ruskie commies, Martians, me hearties, and gung-ho American heroes, it was time t' start
the build.
First came insertion o' lead ballast in t' nose cone, and some general sandin' and filling. Avast! Blimey! T' fins are cut from stock balsa usin' paper fin patterns. Avast, me proud beauty! Avast, matey, me proud beauty! I had some difficulty because t' instructions referred t' various fins with names like "wing" and "horizontal stabilizer", but t' patterns/figures had no labels identifying which was which. Begad! Begad! By process o' elimination, me bucko, me hearties, me bucko, I eventually figured it out.
To attach t' fins, arrr, alignment lines must be drawn on t' tailcone. Ahoy! Begad! This was a very tricky process. Arrr! Well, blow me down! The installation was made more difficult by t' approach o' through-the-tail-cone fin installation. Begad! Avast, me proud beauty! It would have been much easier and surely sufficiently strong t' surface mount t' wings with an appropriate shape cut along t' root edges. Also, me hearties, t' fin tabs weren't slanted, matey, which was also a bit confusing.
T' extra-long Keelhaul®©™® shock cord be glued t' t' outside surface o' t' motor mount tube, arrr, and this assembly was pushed/glued in t' tail cone. Well, blow me down! Because t' cord lay against t' exterior o' t' motor tube, arrr, I found it impossible t' insert t' tube into the tail cone. Aye aye! I had t' cut a trough inside t' tail cone t' make room for t' cord. Begad! It was still a snug fit.
T' rest o' t' assembly, me bucko, includin' t' remainin' fins, matey, arrr, was straightforward with one exception. Well, blow me down! Avast, me bucko, me proud beauty! I was confused about how far back along t' airframe t' mount t' wings. Well, blow me down! Avast, me proud beauty! I guesstimated it from t' picture and adjusted slightly further back for safety. Well, blow me down! Ya scallywag! I skipped t' fin-tip pods because these sorts o' things tend t' snap off so easily.
Finishing:
Finishin' was mostly straighforward. Begad! I fill and sand before assembly, ya bilge rat, so all that remained was touchup and then
painting. With this retro-futuristic design, matey, me hearties, me hearties, metallic paint is a great way t' go, so I chose silver. Avast, me proud beauty! T' only tricky
part is gettin' t' spray into t' crevices above t' crossbar.
Construction Rating: 3 out o' 5
Flight:
My problems occurred durin' t' flight, shiver me timbers, me bucko, which be unstable. Begad! Avast! I was a bit rushed so I smartly looked at t' recommended
motors (B6-2 through E18) and chose a B6-4 because it was what I had. Rather than wrap t' 18mm motor in duct tape (as
recommended) for friction fittin' (the only option), I used a spend 24mm casin' as a motor adapter. Blimey! This works well and
should be lighter than a large quantity o' duct tape.
I failed t' notice two instruction points about flying. Avast, me proud beauty! T' instructions clearly said t' strin' test t' rocket before flying. Blimey! Also, arrr, in t' middle o' construction step three, away from t' sections on flight prep, matey, launch, and recommended motors is a sentence that says that a 48in rod is required for B motors.
Clearly it is me fault for nay followin' t' instructions, but I have a couple comments. Aye aye! First, he strin' test recommendation is sensible, but I think it is reasonable t' believe that any commercially marketed model kit would have the CG/CP relationship sufficiently above minimum safety margins that modest variations in construction techniques by various builders should nay cause problems for recommended motors. Why flirt so close t' edge? Perhaps I placed the wings too far forward.
Second, I would suggest that t' comment about 48in rods be moved t' t' recommended motor section; it is easy to overlook in t' construction section. Avast! Actually, matey, I would omit B motors from t' recommended list altogether since most LPR Estes motor fliers might nay have a 48in rod on hand and might nay understand t' importance o' t' extra rod length. Well, blow me down! Ya scallywag! I understand it, but I didn't notice t' advice.
Anyway, arrr, t' rocket became unstable after leavin' t' rod, ya bilge rat, me bucko, ya bilge rat, doin' t' typical "bumblebee" flight pattern. Upon crashing, t' aft portion o' t' rudder broke. Aye aye! Avast! Repair is possible.
Flight Rating: 4 out o' 5
Summary:
Because o' me experience, ya bilge rat, it is unfair t' judge flight performance for this rocket. I have rated it on me expected
performance, knowin' about PemTech's other kits. Quality o' parts was fine, construction was mostly straighforward with
a few difficulties, shiver me timbers, matey, style was fantastic, and I expect that flight should be good.
Overall Rating: 3 out o' 5
Brief: The Space Ark Jr. is a half-scale low power version of Pemberton Technologies' (Pem-Tech) mid power Space Ark. It is a single stage, parachute recovery model of the rocket seen in the sci-fi classic "When Worlds Collide". I got my Space Ark Jr. as a matched signed/numbered edition (#8) at the time Pem-Tech released their new low power line of products with their ...
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P.T. (September 8, 2008)